I put a Yamaha 570cc 2 stroke engine from a 1990 Yamaha Exciter snowmobile in a 1994 Yamaha G4 golf cart with a lift kit & some nice knobby off road tires etc. about 10yrs ago. Crazy fast without a roll cage & no front brakes! YIKES! LOL :-) Lots of fun though. I was surprised the stock rear diff held up just fine. I really like that gearbox though. I just need to freshen up the engine on mine with a new piston & rings kit & fabricate a roll cage & some front brakes. Makes me want to go out in the garage & get back at it, thanks for sharing! Nice build so far, my 1st video of yours, gonna check out the others.
Thank you for making this video. Not many people cover the gear box as well as you did. This to me is the make it or break it aspect of a motorcycle powered buggy or car. If you can't go in reverse the thing will get super annoying to drive.
Thank you for watching! The gearbox is expensive, but the buggy would be as enjoyable without it. I'd not attempt some trails because I'd be afraid of getting stuck with no way to back up...
Wow!! I got a comment from Ike!!! Huge fan of you guys!!! Thank you for watching one of my videos!! Next time you come to Oregon, gambler 100 mini bike race, I'm gonna try and find you to say Hi, and get a pic with you guys.....
Smiles all round, and like the gearbox...Just sad RPM doesn't have a better website or updated as the fab is wicked and sure they get lots of work but its 2019 you have to keep up with the online market
Set up an adjustment like a car uses to adjust the belts on alternators. Screw adjusts through a pivot pin then a nut tightens it up to keep the screw from backing out. Would be easy to do on your set up. Would also help to brace it
What a phenomenal job geez you always impress us with your abilities and quality workmanship this channel is at the top of my watchlist,Can't get enough, good job ML
loved the episode! I've been looking for info on reverse gearboxes. Your fabrication work is on a level of its own, super impressive. I like the new music loops too, much better.
I am in the design stages of some dual-purpose machines and the forward-reverse aspect of the build had me slightly perplexed so this was super informative. I think that gearbox would be overkill for the small buggies I am going to build my grandsons, as they will be using pit bike engines, but for the big buggies that my sons and I plan to build this will be perfect providing it isn't 2/3rds the cost of my budget Lol! I have seen some other brand gearboxes going for nearly 3k. I can transplant a complete FWD drivetrain into it for that kind of money. Thanks for sharing and I wish I had your shop and tools LOL!
You''re re inventing the wheel. These gear boxes have been layng. Around over 50 years. All u need is the gearbox from an Alpine twin track work sled by Skidoo. You're all too young to know. Haha
Dandahermit Seals I disagree, a skidoo box won’t handle all the load that goes through it, so much more force plus extra weight that goes through the boxes when you use it for offroad application then being on snow.
Well done ! i think this is the best set up i've seen with this type of RPM gear box, this was my first choice but I wanted to have 4x4. so i went for the maverick x3 gear box and adapted a sprocket instead of the clutch, so now I have reverse, HI - LO and 4x4. there are a ton of spare parts online for it and i run can am maverick axles.
Sounds like an awesome setup!!! I just picked up a RZR transmission from a parted out XP900. Very similar to your X3 setup. Saving it for a future project.... Thanks for watching!!!
@@motomule What kind of cost are the RPM boxes? i've been looking for one for a while but most are too expensive for their rated HP. Might be interesting to run a shaft drive from the bike motor to the gearbox then it can be used as a drop box to run in 4wd. Also been thinking of doing the same thing using a manual transmission from a FWD car, just rotated 90 degrees. so CV outputs run front to back.
Hi, Pls take this with a grain of salt. I am a Mfg engineer and have been a CNC Machinist 42 yrs sooo, some of the designs of the Gearbox is redundant. Using a cast gearbox is risky at best. You have a CNC Mill in the background, make billet one. I do like the box brackets, but you could have easily incorporated the Hyme joint supports into them. The drilled nuts welded to hyme supports weakens the struts and two milled flats would have done the trick. over engineering just adds weight, and mass. Just my .02 cents.
Awesome creation! I came, I learned, and now have a reverse solution. Speaking of filling with oil, that dry hardened nut shrieking in the lathe getting drilled out made me and my drill dr cringe. Stay sharp a lot longer with a touch of oil to keep the heat down.
Your very informative and helpful I would love to have the tools and time for building things like you have built I usually have to start with something that someone else has built and fix it to what I want with all the wrong tools lol I really do enjoy your videos keep them coming
Letting you know I just called to get one for a 1300 Hayabusa. I did tell them I saw the trans on Moto-Mule. Hope it helps I hope I get a discount lol. He’s doing some planning to handle the power I’m wanting to push. It’s down to the tire size now.
*Critique* The turnbuckle braces provide close to zero lateral support. Having them attach at a 45 degree angle would help remove both torsional and lateral stresses on the gear box. ^perhaps unnecessary, but you did say that RPM did require support.
Great unit mate it'll do the job perfectly I made my box outa an quad bottom end works awsum the chain is noisy so made a shroud to keep sound down ,lookin 4ward to you driving the monster mate cheers
Great work! Why not mount the breather filter upside down with a loop of hose extending a few inches higher than the actual filter? As it sits if the filter gets dirty (imagine that) and debris enters the hose it will be directed directly into the gearbox by gravity. With a loop higher than the filter any debris must defy gravity to enter the hose and fall into the gearbox. I'm assuming the "breathing" of the gearbox is very gradual as it heats or cools and there is no significant air velocity to factor in. And of course, when things break (they often do) having that little loop higher than the (now tossed down the trail) filter eliminates purchasing another $3,500 gearbox. Oh, and don't forget water. It goes downhill, generally. Cheers!!
@@evanlewis2095 Nice!! I have a friend that has a UA-cam channel called Dirt Garage. If you haven't seen his channel yet, go check it out. He does everything in his yard too. Pretty cool. I've been collecting tools for over 30 years, everyone I have a few extra bucks I tuck it away for tools.. It's my "drug" addiction... 😆
Top of your breather hose should be facing downward so when you wash it or run it in the water or rain the water will soak the filter and it won't just run down into your gearbox use a piece of 5/16 tubing put a 90°bend face the the filter down love your videos good clean work well thought out
I Love your videos, love watching you do things, you've got all the rite toold to Do just about anything you need.. keep up the good work, looking forward to seeing it roll. Thanks
I'll tell you right now MR. Your days of chains stretching to death are over.. mine needed one adjustment .. were running nearly identical packages. blackbird 19/22 rpm 5.4:1 mine 1800 lbs though
I went to the link and didnt show a price so that tells me to expensive to list a price , i bought a complete buggy with a reverse gear box for 700 bucks everything works but the chineezium motor smoked like a hooker on a friday night so dropping a gs 750 in it , hope the gearbox can handle it ....
Can I suggest that you pick up a geometric die head for your lathe? It's not an outrageously expensive tool but it will significantly improve your tapping of parts on the lathe, you can still use the current method for viewers and do it yourselfers. But as a retired machine shop supervisor, watching hand tapping is like hearing fingernails on a chalkboard for me. 😂
That's a fantastic gear box and you have set it up awesome 👍 I seen your rpm link and the rear caliper an disc brake set up is a good idea but looks a bit small if it has weight an high up running through it but I'd imagine they'd have different grades for the buyers to choose from. You buggy is coming along real nice and built tough. Take care Mark.
Thank you!! I have brakes on each wheel, so I didn't consider the one mounted to the gearbox. It would add a little weight up high, but it would also remove unsprung weight which could be a bigger gain??? Thank you for watching!!
One of my favorite girlfriends was a stainglass artest and I never seen a stainglass cutting machine and lead came strcher or anything else about stained glass I was fasanated with those tools , BUT WHEN She saw my Tap and die set ,and how to cut thread and make nuts and bolts ,she went crazy and we built a revolving stainglass door ,it cost us over $700 back then ,but we never had a prictcal use for it ,we broke up and she draged it away when she left it's probably in athousond prices by now 🏁
hey great work very helpful video i have been building for a while now and that is one of the best setups i have seen yet i am sure it will get some attention very nice
Hi , I’m so glad I saw your video. Very good explanation of how this gear box works and how to install it . Thanks a lot. Will this work on an old Vw Baja bug or Vw dune buggy with a Suzuki Hayabusa engine?
Very Awesome Video ! Thanks for all the information and well narrated explanations my first time on your channel but i will watch more especially on that Buggy build that sounds pretty cool to me
Anyone who has a budget buggy and wants reverse just for tight spots I suggest an old ford starter rigged to the axle. It works ok for short durations.
Nice vid👍Is there a limit as to how far you can cant/tilt the gearbox?As you know,the more you tilt it,the oil level at the sightglass will change.....
Great explanation on the RPM Gearbox. I've used them on 3 different builds in the past and your tensioner/ this b$*tch ain't going nowhere mount looks great. On one of the builds I added a small flex plate off a 22hp Honda v twin to the input shaft and used a starter motor off of John deere tractor, It worked great. Keep up the awesome work man!!!
Oh if I only had the cad setup, I can only imagine how much that bracket would cost for a machine shop to make 🥴. Anyway brilliant design Mike, I can almost picture how to mount the gear box, I just first have to figure out how I’m mounting the motor 🤔. I don’t want my motor in the back seat lol!
Should have the pivot point axis as close to centered on the output shaft as possible in order to keep forces down. Landings and rough terrain will have a negative affect and I assume rear suspension will come into play with its physics as well.
Love the fab work! Would it be overkill to add a spacer between those tensioner heim joints and use one long bolt to make them double shear at each end? Just thinking out loud while watching.
Thank you! I could do that up front on the motor mount side because those holes are in alignment. I screwed up on the rear ones, they don't quite line up with each other.... Thank you for watching and offering constructive criticism!!!!
That is an amazing unit, but you failed to mention that it costs as much as a decent car....out of range for most people.....beautiful job on the cradle!!
Thanks. True, it's expensive. But adding up everything I have into this project, I'll be into it less than half of a new RZR.... Plus, I get to say I built it, and it's paid for!!! Thanks for watching.
kenny west I’m not sure to honest, my buggy weight is about 450kgs i think that is about 990 pounds. Some guys buggies are twice the weight of my car and using the rpm boxes.
Very nice job...and build pace. waiting to see you wheelie up a hill. you might want to consider an additional side truss for your transmission or diangonal'ing the turn buckles, all depending on the amount of torque and halfshafts design/angles etc. Using high diameter high durometer (stiffer) polyurethane bushings instead of the heim joints may reduce the vibration and noise transferred to the chassis without loosing too much stiffness and might have a longer service life before you notice slack or knocking (heim joint case). All of these ideas are just humble suggestions to be considered should you encounter any problems with the current elegant design. Keep up the good work and excellent informative videos
Hey Mike, First off let me say I love your builds! My husband and I are currently attempting a build of our own and finding a forward and reverse gearbox for a 420cc engine is near impossible. Bought 2 BK150's and they have been a nightmare they have stranded us in the bush more than once with everything from electrical fires to dead starters. So far we have replaced both starters, replaced the stator in both, and most recently we completely rewired one of them and relocated the battery to the front of the kart.. any suggestions on where to find a forward and reverse gear box for a 420cc engine? Keep up the good work the kids love your builds!
The arrangement at 17:40 is fine to trim the drive chain but it is not an anti-twist structure as the extension bolts and the sheet metal work will flex vertically if the gearbox twists. Some higher thinking is required to make an anti-twist structure to aid that gearbox but most probably the gearbox alone can take what punishment it is offered.
Agree, and needs a diagonal (or 2) to resist twist. (think airplane fuselage, or wing, construction.).. so use turnbuckle to adjust chain tension only. (only needs a lightweight unit). Also use a riveted link chain as split link is a point of failure in anything over about 50hp. (ask me how I know).hehe
I was a cranky bugger until you introduced the Heim joints to tension the box. You have my attention now! Continue please.
This golf cart build is how I found your channel and gotta say it's the one project I'm most excited to see finished and driving.
Me too!!!
This was one of my favorite videos from you. Your design and fabrication skills are far beyond my capabilities, but I really enjoy learning from you.
Wow, thanks!!! I am excited to get this thing driveable!!!! Thanks for watching.
I put a Yamaha 570cc 2 stroke engine from a 1990 Yamaha Exciter snowmobile in a 1994 Yamaha G4 golf cart with a lift kit & some nice knobby off road tires etc. about 10yrs ago. Crazy fast without a roll cage & no front brakes! YIKES! LOL :-) Lots of fun though. I was surprised the stock rear diff held up just fine. I really like that gearbox though. I just need to freshen up the engine on mine with a new piston & rings kit & fabricate a roll cage & some front brakes. Makes me want to go out in the garage & get back at it, thanks for sharing! Nice build so far, my 1st video of yours, gonna check out the others.
Sounds sketchy, I like it!!! 😆 Thank you for watching.
Thank you for making this video. Not many people cover the gear box as well as you did. This to me is the make it or break it aspect of a motorcycle powered buggy or car. If you can't go in reverse the thing will get super annoying to drive.
Thank you for watching! The gearbox is expensive, but the buggy would be as enjoyable without it. I'd not attempt some trails because I'd be afraid of getting stuck with no way to back up...
*wouldn't be as enjoyable without it
Thanks for the video. That is a impressive gear box and i need one bad. Ill be checking them out.
Wow!! I got a comment from Ike!!! Huge fan of you guys!!! Thank you for watching one of my videos!! Next time you come to Oregon, gambler 100 mini bike race, I'm gonna try and find you to say Hi, and get a pic with you guys.....
Smiles all round, and like the gearbox...Just sad RPM doesn't have a better website or updated as the fab is wicked and sure they get lots of work but its 2019 you have to keep up with the online market
That's a great point about heat in the chain something I've never giving much thought to
Set up an adjustment like a car uses to adjust the belts on alternators. Screw adjusts through a pivot pin then a nut tightens it up to keep the screw from backing out. Would be easy to do on your set up. Would also help to brace it
A well thought out plan. Like the tension adjusters.
Thanks!!! More to come.
Very well done he is a master of his ability for modification
Ok now you gave me some good ideas on how to make my cross-cart thanks..
Exactly I want to do a Hayabusa powered cross cart.
Really dig the extra touches you put into this build and video. Keep it coming Mule.
Thank you! Thank you for watching!!!
Not just useful, but extremely useful man.
Thanks man!!!
Your fab work is incredible! I look forward to the next video👍
Thank you!! Thanks for watching.
Excellent little gearbox, I like the simplicity of the adjustment to line the sprockets up, nice.
What a phenomenal job geez you always impress us with your abilities and quality workmanship this channel is at the top of my watchlist,Can't get enough, good job ML
Thank you, that is an incredible complement!! Thank you for watching.
Very well done video. You explained things very clearly and what you are doing is very well thought out.
Thanks ✌
Thank you for watching!!
You are a master fabricator!
Also your video making is getting alot better at a fast pace, keep up the great work!
Thank you!! Never stop learning, right?? I'm taking in the feedback I get and am trying to up my game with every video. Thank you for watching!!
Nice work. Like. To. See the finished product in action. I would. Like to have that build in a Sprite mk--2
Sweet go cart! That thing is an ideal woods rig!
It's a little wide for the trails we have here, but it will be perfect in the wide open sand dunes!! 😎
Make a chain box to keep it clean.
You can add a lexan window to watch for wear and slack.
It really extends chain life .
Good idea!!!
loved the episode! I've been looking for info on reverse gearboxes. Your fabrication work is on a level of its own, super impressive. I like the new music loops too, much better.
Thank you!! I'm learning!!! Thank for watching.
I am in the design stages of some dual-purpose machines and the forward-reverse aspect of the build had me slightly perplexed so this was super informative. I think that gearbox would be overkill for the small buggies I am going to build my grandsons, as they will be using pit bike engines, but for the big buggies that my sons and I plan to build this will be perfect providing it isn't 2/3rds the cost of my budget Lol! I have seen some other brand gearboxes going for nearly 3k. I can transplant a complete FWD drivetrain into it for that kind of money. Thanks for sharing and I wish I had your shop and tools LOL!
Super excited to see this thing done. Awesome work brother
Thank you!! I am super excited to drive it!!!
Awesome, I've been looking for / researching reverse boxes similar to this for years, wishing there were new more inexpensive alternatives developed.
$2,500 for these boxes includes US shipping, no LSD available for this but he has built custom LSD units for customers in the past..
www.transworks.biz/minidiff.html
You''re re inventing the wheel. These gear boxes have been layng. Around over 50 years. All u need is the gearbox from an Alpine twin track work sled by Skidoo. You're all too young to know. Haha
Dandahermit Seals I disagree, a skidoo box won’t handle all the load that goes through it, so much more force plus extra weight that goes through the boxes when you use it for offroad application then being on snow.
Well done ! i think this is the best set up i've seen with this type of RPM gear box, this was my first choice but I wanted to have 4x4. so i went for the maverick x3 gear box and adapted a sprocket instead of the clutch, so now I have reverse, HI - LO and 4x4. there are a ton of spare parts online for it and i run can am maverick axles.
Sounds like an awesome setup!!! I just picked up a RZR transmission from a parted out XP900. Very similar to your X3 setup. Saving it for a future project.... Thanks for watching!!!
@@motomule What kind of cost are the RPM boxes? i've been looking for one for a while but most are too expensive for their rated HP. Might be interesting to run a shaft drive from the bike motor to the gearbox then it can be used as a drop box to run in 4wd. Also been thinking of doing the same thing using a manual transmission from a FWD car, just rotated 90 degrees. so CV outputs run front to back.
@@NVMDSTEvil the RPM box is expensive, about $2500. It is a very well built unit however.. Thanks for watching!!
Hi, Pls take this with a grain of salt. I am a Mfg engineer and have been a CNC Machinist 42 yrs sooo, some of the designs of the Gearbox is redundant. Using a cast gearbox is risky at best. You have a CNC Mill in the background, make billet one. I do like the box brackets, but you could have easily incorporated the Hyme joint supports into them. The drilled nuts welded to hyme supports weakens the struts and two milled flats would have done the trick. over engineering just adds weight, and mass. Just my .02 cents.
this gearbox answer all of my problems
thanks man
great works
Thanks for watching!!
Great product, great explanation, great video. Keep up the great work.
Thank you, and thanks for watching!!!
Awesome creation! I came, I learned, and now have a reverse solution. Speaking of filling with oil, that dry hardened nut shrieking in the lathe getting drilled out made me and my drill dr cringe. Stay sharp a lot longer with a touch of oil to keep the heat down.
Your very informative and helpful I would love to have the tools and time for building things like you have built I usually have to start with something that someone else has built and fix it to what I want with all the wrong tools lol I really do enjoy your videos keep them coming
Thank you! I wish I had more time to work on fun stuff like this. Thanks for watching!!
Letting you know I just called to get one for a 1300 Hayabusa. I did tell them I saw the trans on Moto-Mule.
Hope it helps I hope I get a discount lol. He’s doing some planning to handle the power I’m wanting to push. It’s down to the tire size now.
Sorry man, I have no "IN" with RPM.... I just liked the product. Enjoy!! Thanks for watching!
Well maybe you will??? I buy one trans maybe they might sponsor you posts??? Good luck 🍀👍🏻
*Critique*
The turnbuckle braces provide close to zero lateral support. Having them attach at a 45 degree angle would help remove both torsional and lateral stresses on the gear box.
^perhaps unnecessary, but you did say that RPM did require support.
Looks like a well thought out quality product.
It is very well built.
Good work on the cradle
Thanks!!!
This would be perfect for my street bike engine in my vw bug
Looking good, well done on the script, and explanation of what you were doing. Man i love your shop!
Thanks!!! I love my shop too!!! It's been my life's work putting it together. Now to just crank out some cool projects!!!! Thanks for watching.
Thanks for replying!
Just found your channel, I'm enjoying seeing all the different kinds of creative processes going on! Keep it up, you got a new subscriber.
Thank you!! More to come. Thanks for watching!!
Great unit mate it'll do the job perfectly I made my box outa an quad bottom end works awsum the chain is noisy so made a shroud to keep sound down ,lookin 4ward to you driving the monster mate cheers
Thanks for watching!! I can't wait to drive it!!!!
@@motomule I reckon youl have a sore face from grinning like a kid mate good luck with the final stages of the build cheers
Great work! Why not mount the breather filter upside down with a loop of hose extending a few inches higher than the actual filter? As it sits if the filter gets dirty (imagine that) and debris enters the hose it will be directed directly into the gearbox by gravity. With a loop higher than the filter any debris must defy gravity to enter the hose and fall into the gearbox. I'm assuming the "breathing" of the gearbox is very gradual as it heats or cools and there is no significant air velocity to factor in. And of course, when things break (they often do) having that little loop higher than the (now tossed down the trail) filter eliminates purchasing another $3,500 gearbox. Oh, and don't forget water. It goes downhill, generally. Cheers!!
Good idea!! I'll try to address that. Thanks.
That things going to be a beast I wish I had the tools and space you have
I hope it's a beast, can't wait to actually drive it.... Thank you for watching.
@@motomule I'm a crackhead for this stuff I love learning new ways to put myself in danger lol I'm in my back yard with a hand full of tools
@@evanlewis2095 Nice!! I have a friend that has a UA-cam channel called Dirt Garage. If you haven't seen his channel yet, go check it out. He does everything in his yard too. Pretty cool. I've been collecting tools for over 30 years, everyone I have a few extra bucks I tuck it away for tools.. It's my "drug" addiction... 😆
@@motomule I'm always love oooh I have tools must be nice lol I'm just jelly keep up the good work and I'll keep absorbing as much as I can
Buen día a gracias seńor por compartir su gran trabajo ,me suscribo estoy suscrito éxito siempre
Ok this is what I’m looking for to power my vw bug with my GSXR 1000 motor that’s awesome!
Good teacher , i like the way you explain
Top of your breather hose should be facing downward so when you wash it or run it in the water or rain the water will soak the filter and it won't just run down into your gearbox use a piece of 5/16 tubing put a 90°bend face the the filter down love your videos good clean work well thought out
Yes, I need to fix that. Thanks for watching!!
I Love your videos, love watching you do things, you've got all the rite toold to Do just about anything you need.. keep up the good work, looking forward to seeing it roll. Thanks
Thank you for watching!!!! So close to being able to drive it....
I have an RPM box on my buggy, and I'll bet your pinch bolts will be enough. better than any of my 3 iterations, although the last one finally held.
Good to know, thank you!! Thanks for watching!!!
Looking to Hayabusa swap my Mini Cooper and had no idea how to overcome this but there's still hope
I'll tell you right now MR. Your days of chains stretching to death are over.. mine needed one adjustment .. were running nearly identical packages. blackbird 19/22 rpm 5.4:1 mine 1800 lbs though
That is good news!!!! Gotta get this thing back in the shop and finish it!!
It'll blow your mind how much this engine responds to 2lbs of boost
Now if only the RPM boxes weren't so freakin expensive and unobtainable to the average builder.
mine came on an x-rail. Might want to do an occasional search for a used one
I went to the link and didnt show a price so that tells me to expensive to list a price , i bought a complete buggy with a reverse gear box for 700 bucks everything works but the chineezium motor smoked like a hooker on a friday night so dropping a gs 750 in it , hope the gearbox can handle it ....
@@4486xxdawsonI inquired about one for my project and they quoted $2200
Can I suggest that you pick up a geometric die head for your lathe? It's not an outrageously expensive tool but it will significantly improve your tapping of parts on the lathe, you can still use the current method for viewers and do it yourselfers. But as a retired machine shop supervisor, watching hand tapping is like hearing fingernails on a chalkboard for me. 😂
awesome welding bro
That's a fantastic gear box and you have set it up awesome 👍 I seen your rpm link and the rear caliper an disc brake set up is a good idea but looks a bit small if it has weight an high up running through it but I'd imagine they'd have different grades for the buyers to choose from. You buggy is coming along real nice and built tough. Take care Mark.
Thank you!! I have brakes on each wheel, so I didn't consider the one mounted to the gearbox. It would add a little weight up high, but it would also remove unsprung weight which could be a bigger gain??? Thank you for watching!!
The brake on the gearbox could be used for a parking brake....just a thought.
@@Mardy72 very true and a great idea. Thanks!!!
One of my favorite girlfriends was a stainglass artest and I never seen a stainglass cutting machine and lead came strcher or anything else about stained glass I was fasanated with those tools , BUT WHEN She saw my Tap and die set ,and how to cut thread and make nuts and bolts ,she went crazy and we built a revolving stainglass door ,it cost us over $700 back then ,but we never had a prictcal use for it ,we broke up and she draged it away when she left it's probably in athousond prices by now 🏁
That things awesome!! Can’t wait!
Me neither!!! Then we can get work on toddler beds!!!
Yes sir!!
hey great work very helpful video i have been building for a while now and that is one of the best setups i have seen yet i am sure it will get some attention very nice
Thank you!! I can't wait try it out. Thanks for watching!!!
You going to have that chain cryogenically tempered... Lots of Sawmills are doing that now
Had not heard of that, sounds pretty cool.
Hi , I’m so glad I saw your video. Very good explanation of how this gear box works and how to install it . Thanks a lot. Will this work on an old Vw Baja bug or Vw dune buggy with a Suzuki Hayabusa engine?
Wow exactly what I'm looking for🤯. Nice awesome build 👍
Thanks!!! Thanks for watching!!
Very Awesome Video ! Thanks for all the information and well narrated explanations my first time on your channel but i will watch more especially on that Buggy build that sounds pretty cool to me
Thanks!! I plan to get back to work on that buggy here soon. The weather is finally starting to improve!!!
Anyone who has a budget buggy and wants reverse just for tight spots I suggest an old ford starter rigged to the axle. It works ok for short durations.
That's a great idea. If you have a video showing that setup, feel free to add a link to it here. Thanks for watching!!
Nice vid👍Is there a limit as to how far you can cant/tilt the gearbox?As you know,the more you tilt it,the oil level at the sightglass will change.....
Great explanation on the RPM Gearbox. I've used them on 3 different builds in the past and your tensioner/ this b$*tch ain't going nowhere mount looks great. On one of the builds I added a small flex plate off a 22hp Honda v twin to the input shaft and used a starter motor off of John deere tractor, It worked great. Keep up the awesome work man!!!
Thank you!! This is my first time using one of these boxes, it sure appears to be well built. I can't wait to actually use it!!! Thanks for watching.
Oh if I only had the cad setup, I can only imagine how much that bracket would cost for a machine shop to make 🥴. Anyway brilliant design Mike, I can almost picture how to mount the gear box, I just first have to figure out how I’m mounting the motor 🤔. I don’t want my motor in the back seat lol!
I have garage envy. You have some great tools. 😁✌
Thanks! I've been collecting tools for over 30 years... Thanks for watching.
Great job project is looking awesome
Thanks!!
Should have the pivot point axis as close to centered on the output shaft as possible in order to keep forces down. Landings and rough terrain will have a negative affect and I assume rear suspension will come into play with its physics as well.
first vid of yours iv'e seen , subbed,looking at a similar thing for my mini moke CBR 1100 engine swap, cheers from Australia
Thanks for watching!!
Love the fab work! Would it be overkill to add a spacer between those tensioner heim joints and use one long bolt to make them double shear at each end? Just thinking out loud while watching.
Thank you! I could do that up front on the motor mount side because those holes are in alignment. I screwed up on the rear ones, they don't quite line up with each other.... Thank you for watching and offering constructive criticism!!!!
Very informative video 👍
been thinking about this for a long time
That is an amazing unit, but you failed to mention that it costs as much as a decent car....out of range for most people.....beautiful job on the cradle!!
Thanks. True, it's expensive. But adding up everything I have into this project, I'll be into it less than half of a new RZR.... Plus, I get to say I built it, and it's paid for!!! Thanks for watching.
fabricationnation hasn't been to a car lot in 40 years.
Smashed the like button as always. Keep up the awesome work.
Thank you!!!!
Great box! Iv just installed one into my buggy.
Cost?
kenny west $2,700 au i paid for it.
You can pick them up for about $2000 US.
@@SikSwanger how heavy can my buggy be?
kenny west I’m not sure to honest, my buggy weight is about 450kgs i think that is about 990 pounds.
Some guys buggies are twice the weight of my car and using the rpm boxes.
I need this gear box badly, great info, thanks
Thank you!!! I can't wait to actually use it!!!
Nice Work!
Awesome video liked and subscribed. Awesome skills!
Thank you
On the other side you can add a small alternator on shaft from your gearbox for back up battery, just an idea..
Cool idea. Thanks for watching!!!
@@motomule I have pictures of my RPM with an alternator on the FB group, if you go that route.
@@plkracer I will check that out, thanks!!
Beautiful welds.
Thanks for watching!!!
Hell yeah brother, most excellent.
Great info big dawg.
Nice project !
Thanks for watching!!
Top video I like your skill very professional
I watch lots of gokart build videos on UA-cam. I label you as the guy who knows what the hell he is doing.
Wow, thanks!!! Thank you for watching.
esqueue you should see Mikes shop where he works, he’s a humble man cuz in reality Mike’s like a master machinist from what I’ve observed
Rather B Weldin seems to know what he's doing to. But I agree with ya on that juan
Be nice to have a shop with all this euipme t.makes everything so much easier
Very nice job...and build pace.
waiting to see you wheelie up a hill.
you might want to consider an additional side truss for your transmission or diangonal'ing the turn buckles, all depending on the amount of torque and halfshafts design/angles etc.
Using high diameter high durometer (stiffer) polyurethane bushings instead of the heim joints may reduce the vibration and noise transferred to the chassis without loosing too much stiffness and might have a longer service life before you notice slack or knocking (heim joint case).
All of these ideas are just humble suggestions to be considered should you encounter any problems with the current elegant design.
Keep up the good work and excellent informative videos
Thank you for the suggestions. If I have any problems, I will try these things. Thank you for watching!!
Great. Now I just need a fully capable machine shop to fabricate my own dune buggy... :P
I love your explanation, sir! How do I get this reverse gearbox am from Nigeria. I will be very grateful if you can assist me on how to get it
They need to make a 4 wheel drive version ! ( have a shaft that goes to the front then the a box for the front 4wd)
That would be awesome!!
Dan should be proud of this video I just have to talk my wife into letting me buy one
Nice build...
Thanks for watching!!
@@motomule I was looking for a way to have reverse on a motorcycle powered buggy ..how much are these gear boxes
@@diytypeofguy6502 $2500 spendy, but very well made.
Nice video!
I really like your work
Very nice !!
Thank you for watching!!
Just watched your video good job I liked it
Thank you for watching!!!
That's sweet fab work
Thanks!!! Thanks for watching!!
Hey Mike, First off let me say I love your builds! My husband and I are currently attempting a build of our own and finding a forward and reverse gearbox for a 420cc engine is near impossible. Bought 2 BK150's and they have been a nightmare they have stranded us in the bush more than once with everything from electrical fires to dead starters. So far we have replaced both starters, replaced the stator in both, and most recently we completely rewired one of them and relocated the battery to the front of the kart.. any suggestions on where to find a forward and reverse gear box for a 420cc engine? Keep up the good work the kids love your builds!
buy this one
The arrangement at 17:40 is fine to trim the drive chain but it is not an anti-twist structure as the extension bolts and the sheet metal work will flex vertically if the gearbox twists. Some higher thinking is required to make an anti-twist structure to aid that gearbox but most probably the gearbox alone can take what punishment it is offered.
Agree, and needs a diagonal (or 2) to resist twist. (think airplane fuselage, or wing, construction.).. so use turnbuckle to adjust chain tension only. (only needs a lightweight unit). Also use a riveted link chain as split link is a point of failure in anything over about 50hp. (ask me how I know).hehe
awesome fab work man
ever thought of using moreys for your r p m gearbox its very good