B&M 250 Supercharger: How (Not) to Make a Custom Input Shaft (78 Firebird Ep.27)
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- Опубліковано 28 вер 2024
- This is certainly not my proudest moment, but it would be dishonest to present the process of replacing the input shaft on our B&M 250 supercharger any other way. We tried and tried again to find a way to build a custom input shaft in the garage but, as you'll see in this video, things did not quite go as planned. We will do what we have to in order to get the blower to work though, so stick through until the end of the antics to find out what actually worked.
Timeline of filming: December 18th, 2019 - July 16th, 2020
Song List (Order of First Appearance):
0:01 To Weather a Storm - Dan Lebowitz
5:38 Hilltop - Dan Lebowitz
11:15 Tiptoe Out the Back - Dan Lebowitz
15:37 Forgiven Fate - Dan Lebowitz
(All music provided by UA-cam's Audio Library royalty free.)
Thanks for watching, and joining us on this adventure! Please let us know what you think! Consider supporting us via Patreon as well! / fuzzydiceprojects
Follow our Instagram for more pictures and teasers: / fuzzydiceprojects
Check out our second channel for a variety of other content: / @fuzzydicepastimes
Yes, this is a long video for just a little progress. Yes, I tried a lot of things I wouldn't do again. Yes, next video will be reassembling the supercharger.
With that out of the way, I hope it comes across but this video is probably more a cautionary tale than anything else. It was a huge task to try to explain what happened here and why, and of course hindsight is 20/20. I learned a lot and actually had a decent (if frustrating) time experimenting with these sketchy fabrication concepts. It may not be the most interesting or productive episode ever, but I set out to document this process in detail so we may as well see it through, mistakes and all.
With all that said, I hope everyone out there has a great Thanksgiving!
Not stubbornness, pride, or frugality..... cheapness the king them all
You don't know till you try. I am just a shade tree machinic my self but I went to trade school to be a machinist an am pretty local to you. I live in Cumberland MD and have a lathe and mill and would be willing to help you modify anther one. keep up the great work and remember nothing ventured nothing gained.
@@thomasbedford1692 Sometimes being cheap ends up costing more! Hopefully this experience will alleviate any aversion to machine shops. They can (sometimes) be very reasonably priced, especially when replacement parts are impossible to find. Having that shoulder turned down on and a keyway cut could certainly be done for about $100.
But sometimes it's more fun to try and do it yourself!:)
Rather b welding a fellow UA-camr I’ve watched for years I bet if you reached out he could make you a brand new shaft with spines and the pulley coupler and the rear shaft coupler with all the splines and key ways you want just how you want them
Next time - just buy a small lathe. Not too small obviously 😋
I can't believe you even tried that on your own. So glad you found a machine shop that would do it for a reasonable price. I work for the shipbuilder that is the sole builder of aircraft carriers for the US Navy and you still impress me with what you can (and sometimes can't) do in your workshop. I will be a lifetime subscriber.
Newport news?
Can’t say I’ve ever seen anything like this
OMG you are a reincarnated GM engineer. Only engineers would spend weeks trying to do the work a machine shop could do right in an hour. Lol I love it and always love the videos. I joke I truly love that you try to do everything yourself before turning to the a shop. Keep up the amazing work.
Yes, he has the mind of an engineer. Which is a great thing. However, he should get a job at a machine shop as an apprentice so he can develop the skills needed to make things.
I sometimes go down a rabbit hole like this, the older you get, the more you walk right past them without jumping in.
Yeah. At this point in my life labor has value and I only have so much time.
It's great going through your creative process. Doing stuff "off the book" can really teach you things. You either gain a new and better way to do something, or just more experience when you have to fix what you just broke!
"I know how to do things right because I've tried every way that was wrong". The motto of my life!
You could - and yes, SHOULD have just sent the new parts to a machine shop from the outset and had them do the shortening work, probably on the other end. Cutting it down and putting a key on both sides would've been about the same amount of work as cutting the new splines, and you'd have kept your perfectly matched splines and coupler.
I know the attraction of failing yourself instead of paying for victory, but the knowledge of what you were getting yourself into should've been comparatively obvious. Not knocking on you, just a "know your limits" kind of thing. Even the Bad Obsession boys know when to call it quits - even if they usually end up just having to change whatever they bought anyway, lol.
It’s so hard to watch, but I can’t look away. I love this channel!
i can't wait for the particle collider series😗
Love that you've posted your learned experience. There's a real problem with modern science where there's a reluctance to publish negative results but this is a clear example of what it's very helpful to do so.
Actually its fascinating watching you go thru these attempts. Thanks.
When someone asks for an example of 'throwing good money after bad' I now know what to use for an example, lol. That said I do feel for you trying to do it yourself. Back when I was young I tried to replace my fuel filter but I couldn't get the fuel lines off. So I cut the fuel lines and figured I'd drop by the auto parts store and replace them. They didn't have them. Great! After paying for a tow to a specialty auto repair shop and an expensive repair bill, I at least can say I came out of the experience learning a little bit.
There's some level of masochistic hedonism in your approach that I admire!!! It'll all cone together eventually. Dare I say "best of luck??" Have fun buddy.
I saw Camarata once weld and try to weight balance a shaft in one of his snowmobiles
Awesome stuff !!!
DIY doesn't always turn out as planned. I salute you for taking on this process yourself and learning from your mistakes. That's what DIY is all about!
Loved the video man! I enjoy watching the whole process 80% of this video ended in a failed part but its was all necessary. keep up the work.
Yesss I'm so glad I re-found this channel!
You’re best bet is a lathe for these type of things. It is so able using one.
MAN! You're stubborn 😂😂, that's why it's my favorite channel on YT. Keep going champ!! 💪💪
Your pain was highly entertaining. Thank you for your sacrifice!
I bet the shop loved you for giving them a pain in the ass job instead of having them just cut a simple bearing surface
I think it's time for someone to ask Santa for a lathe. Trust me it'll change your world and open up a whole world of crazy things you can get into.
That key was a point of failure on purpose. It's likely very weak steel -- strong enough under the load it was designed for but will fail if that load is greatly exceeded. It helps protect the much more expensive parts.
I run printing presses for a living and all of the anvil rollers are fixed to the gears in the press with pins. They break occasionally but it's a few bucks for a pin, $300+ for a new anvil gear or $4000+ for a new anvil (not to mention the cost of downtime).
I just saw that you had a patreon and I had to subscribe I dont know how to describe it but your video are one of the most cozy I ever saw.
I'm sure this was painful for you but that makes it that much more informative and entertaining for us😄
I am so engulfed in this series I want more always! I would love to see you get into a shop with the right equipment to put out your amazingly detailed content more quickly
This is like a fever dream.
Thank you for sharing this, I'm terrified of your extreme integrity.
I’m just wondering if these weaknesses were actually designed in failure points for safety or repairability.
This☝️
I don't think so. Designed in points of failure are just that, designed. Things like shear pins and sacrificial parts are usually obvious from a metallurgical standpoint. Wiping out a keyway or splined part is not something I've seen.
I had my Pikachu surprise face watching you try to get the shaft correct.
You're having knowledge and skills I wish I maybe develop one day, with the same mentality of doing everything myself lol
I like how you found creative ways to make the old shaft work I would've send the shaft to a machine shop. You always surprise me and that's what I love about your videos :) I really thought that the welding idea was going to work
Keep posting buddy. Great stuff! Letttttttssssss gooooooo!
Experience is the ability to recognize a mistake the second time you make it. Congrats on gaining a whole lot of experience with this side project! I'm not going to chide you for your efforts, as I really enjoyed the video. But... just... wow...
Well I can see one thing in your future
And that a mini lathe can't wait for the next video man happy thanks giving
A new video! Now it’ll be a happy Thanksgiving!
Respect for trying to fix it yourself! People are gonna say shit about it but big thank you and props to you for showing it in the video! Very interesting taught process regardless of if it worked or not!
Thnx 4 the upload, this was a good laugh.
I wonder if the clearance between the splines and the couple is supposed to be a little loose to account for heat expansion?
Whoa, that’s a lot of work. Thanks for sharing even your mistakes
Regardless of method I love your out of the box thinking, yeah not everything works but it's a learning process and it's better to learn along the way.
671 likes!! The Blower Gods are with you!!
Loctite 680 retaining compound will tighten up the fit of the splined shaft in the coupler.
You need a little lathe and mill brother!
Easiest method for making a taper if you don't have a mill. Mount the pieces one at a time in your drill press, use a course file (or a carbide cutter) as the drill press is running. It would help to use an angled piece of wood clamped to the drill press table as a tool rest.
well in a couple more months we may get to see something new-ish (Sarcastic Remark) I do actually love your videos and editing style. YT is a rather time consuming job when your a bit of a perfectionist. Cant wait to watch more videos! till then
Was waiting for this. Always really enjoy these.
You're my f****** hero. That was a hell of a try!
Andrew camarata did basically this exact same thing in a vid where he took 2 junk snow mobiles and made 1 less junky "long track" version. It worked pretty well actually
One thing I was surprised you didn't do instead of cutting and welding the 2 ends together was to cut the shaft to length from the spline side and the and on the bearing side have it marked out to length and put it into a drill press and use a sanding block or a hand held belt sander mocked up so it goes to the depth needed
A harbor freight lathe might be a worthwhile investment.
I'm a little curious about how you reasoned when you decided that creating new splines was a smoother way than turning the straight end down to the right roughness and then cutting to the right length. The keyway and threaded hole are quickly made by a regular company.
By the way, you have a really suitable voice for voiceover
To be honest bolting the spline on the end to lengthen it was pretty brilliant unfortunately I think execution was off a little and probably shouldn't of just hammered the coupler on. Good on ya man. You come up with some great ideas
I probably would have dowel pinned the original shaft with the new coupler. I still feel like a set screw or something to keep it tensioned is a good idea because that play will eventually pound out the splines.
I would just use some sleeve retainer on the splines and call it a day. It’ll loose that play and won’t move on you ever !
My face is red from palming it over and over again while watching this video.
I wonder if smearing some RTV on those splines before assembly would minimize some slop or provide a bit of cushion? I'd say loctite 680 retaining compound but it'd be impossible to disassemble then.
Any chance you’re planning to do a pinto engine tear down to investigate the overheating causes?
Could you use green loctite to take some slop out of the spline to coupler interface?
Definitely something I'd do in a project XD
Great video. Your ingenuity. Is awesome
I am so glad I have my own lathe.
Fuzzy, did you know that the VAST majority of strength in a shaft is the outside diameter? This is why gun drilled 40 spline axles are used on drag cars. Anyway, I would have just turned it down on a lathe.
Wow.. This makes me glad I went with a turbo lol
you need a friend with a lathe nearby, that shaft mod would be a walk in the park
10:35 I was wondering if you still had this firebird. Also looking forward to this series being finished as this was the first video series I watched on your channel.
Genuine question. Why didn't you take the bearings you used to see if it was aligned and make a redneck lathe in the drill press and cut down the keyed section?
Love the content Mike! If you search "Allen Millyard super six camshaft" here on youtube, you could've tried his method how to marry pieces of a camshaft together to make one piece that runs true. He used spare gudgeon pins bored into the center to hold the shaft as true as possible. Glad you found a way in the end :)
@ Fuzzy Dice Projects
I know you like to do things yourself. Although a local machine shop could have shortened and keyed your new shaft in a couple days.
It would also be possible to do if you had a small lathe.
Amazing skills
Awesome, Happy Thanksgiving!
Also, with the new part that you did get I have to wonder that when everything starts getting hot that interference fit that wobbles a little bit probably will go away
sometimes, most of the time, we learn the hard way....i may have tried some similar ways to yours but in the end, the $91 to make it look factory probably was a quarter of all the time, effort and money you tried on the first experiment
Woah, the opening music made me think I clicked on the wrong video (That Chapter).
There's a saying in hobby electronics that you only learn when things go bang. Presumably, the same thing applies to mechanical engineering. You only learn by breaking it. I can attest that the same is true in a number of such disciplines.
knock knock, ABOM79 calling.
Is watching that was overwhelming lol
What in the crazy train is going on 😂
This whole video is hilarious. I appreciate the DIYer in you. But just take it to a machine shop
Did I miss the part of why you did not just have a machine shop to the simple cut down and key way cut rather than send it out for splines? The tight fit coupler and shaft was perfect., but that after cut was not good and it could have been you damaged the coupler so no matter how well the splines were cut it was never going to be tight.
All can say is tried that more than most people would
Time to get a lathe?
Wouldn’t it be simpler to just machine the bearing surface, than making new splines?😅 I would atleast have done that myself, but i like that you at least tried your best to weld it together, even tho it’s so hard getting it right when you weld stuff😅
So far, I really liked the series, but this screw up with the axle disgusted me, how much would it cost you to correct the axle on a lathe, $100?
Thank you for sharing this journey with us! It was very entertaining and as always, I learned a lot. I'm curious why you thought the welded shaft (without the reinforcement added) wasn't strong enough?
The weld would have been weaker, soft metal and wouldn't have taken the forces as well as the steel shaft, thus being a failure point on high load.
Thousand ways to… you know the rest, but you enjoy working out problems, even the ones you create! Yes I see that as I also prefer doing it the hard way if I can do it myself!
What ever happened to fuzzy dice friends?
Let's gooooo
Edit: Bro, I let out an audible gasp when the seal broke!
im really wondering if you really want to make your car explode goin at full speed
I’m struggling to understand why you got the splines machined and not just the shoulder and key way instead which would of been much simpler
Have you tried to have it all machined. You can have it all cut out of a axel shaft out of a Ford f150 250 or 350. If it's "broke" your buying scrap from a pull yard. Super cheap....
The drill bit pin is more then hard enough and that will hold just fine 👍 next time message me i have all the tools to do this kind of work bud
a pin is actually stronger than a key so doing theater pin was a good decision
So, the big question: What did you learn?
The big lesson here is that metal bends toward the weld which is why this was difficult or impossible.
Where is @Abom79 when you need him?
I wonder why the seller wanted to get rid of this, lol.
Content 😎
Omg! Machine shop...
Gezz dude. Smh