4 Link Suspension Explained - Rock Rods Tech
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- Опубліковано 15 чер 2024
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/ @bustedknuckleoffroad
On this episode of Rock Rods Tech Jake Burkey teaches us about the dos and donts of building a double triangulated 4 link suspension. Whether it is for a Jeep, rock bouncer, rock crawler or even a race car the principles are the same. This video will help you on build so you can get the right setup
Check out our website for all of the parts you need for your build - www.bustedknuckleoffroad.com
Also see our video on Anti Squat and Anti Dive and how it affects the way your suspension works- • Anti Dive and Anti Squ...
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ua-cam.com/channels/bOUUPmH1YoFXHRQuZarA5A.html
Jake you are the only one that makes people understand what is all about 4 link
You help me a lot to understand what and how to do it
These 3 videos about 4 link are more than treasure to me and for most of us that want to build a reliable 4 link suspension
Thank you .... i wish i could thank you in person but i am far away from there
Thank you we are glad it helps so many people enjoy their builds that much more.
This is by far one of the best 4 link videos. I've came back to it many times for reference
Jake knows his stuff
I learned more in the 12 minutes I spent watching this video than I have in the 12 years I've spent in grade school/high school
Jake is a good teacher
Really appreciate the actual useful info. Not many people on the internet genuinely just trying to give good info. Trying to build a prerunner and would love a 4 link rear.
glad we could help, check out anti squat and anti dive video as well ua-cam.com/video/UzayUxQCWaY/v-deo.html
Good stuff. I've been out of 4 wheeling for awhile due to life. Before life happened I was in the parts acquisition stage of building my Jeep. Since then I landed a sheet metal apprenticeship and to finish it out we do a project of our own for our 5th year. I decided I was going throw out all my brackets, tabs, skids, misc sheetmetal parts, build all of it myself, and finish my suspension. This, along with your anti-squat video, are really good refreshers. I just wanted to say thanks for sharing all this good information.
Glad we could help. Hit us up if you need any parts www.bustedknuckleoffroad.com
Will do. I'm only doing the sheetmetal stuff. I'll still need all sorts of other stuff. lol
Great videos!!!! Keep it coming, it's now the first channel I check for new vids.
Great, informative video. I’m almost embarrassed to say that I’m using this information to build an RC crawler, but there it is.
nothing wrong with that, geometry always works
Haha, I'm here via search for the same 😎
Awesome! Extremely informative. I'm not even building a crawler, but the theories you explained here are very applicable to vehicle steering and suspension. This video was certainly worth the time.
The ONLY point I can pick at is the difference in volume in video segments haha. Thanks for taking the time.
glad to help!
Very timely instruction for me. Thanks for going to the trouble of putting these videos together. Very much appreciated!
Looking forward to the next one for sure.
+Tim Diebert thanks for watching
Voice of gold....stay golden BURKEY.
More Tech vids coming soon!
I watch all the videos and your amazing at explaining everything in detail
we appreciate that. thanks for watching!
Thank you very much for this series!!! we have 3 jeeps all on leaves. im ready to take the link plunge and do this!! will be following!!!!
Its not too bad. well worth the end result for sure!
Outstanding video. Very well made and presented. I have quite a bit of learning ahead of me before I built this!
stay tuned for more
Dig the lesson. First attempt here for the consideration of the 1965 CJ5. Like the clarity in the education and simplified for us newbs
hope it helps
Sounds like you know these things from experience. Best kind of knowledge. I'm building a project in my mind, before I start the actual work. This has really helped. I appreciate the video. Hope youtube pays you guys well.
glad it helps!
Great class teacher! Thanks for you're time and expertise
More to come!
thx, using some of your tips with some past attempts and using to hopefully overcome some past challenges!
get that suspension right and let us know if you need parts www.bustedknuckleoffroad.com
Super informative, great video. Thanks.
Glad it was helpful!
awesome videos! this helped explain a lot of the questions ive had after many hours of reading on pirate where its not always easy to find actual answers!!
glad to help!
Keep these tec tip coming . Im planning on buildind a ford ranger into a rock crawler trail rig and this is the kind of stuff i need to know
We have more coming down the pipeline soon!
Awesome Jake, Great idea making these video's. Keepum comin
+Shane B. more on the way
Amazing video exactly what i was looking for for four link info
Glad we could help! Check out the entire Rock Rods Tech Tip Series
Thanks very informative. I always look forward to watching your videos.
+Eddie Rodriguez thanks we have a lot more in store
Have you thought about doing a video on choosing ride height or picking the right shocks? I believe that would go really good with your other suspension videos.
+Aric Lewis possibly
Amazing info mate ... really helpful to finally have somebody talk numbers instead of vague principles ;-) Definitively will be using this info in my coming buggy build !!!
Glad to help out, let us know if you need any parts for the build
Thanks for this very informative video!! I'm working on putting Dana 44 front and rear under an old D-21 Nissan extended cab. Also dropping in a Ford 351/automatic.
sounds like a fun project
You're awesome man. Keep up the great teaching!
I appreciate that!
I learn a lot from you technically and theoretically. Endless thanks you are awesome
Awesome! Thank you!
Thanks Jerry T for sharing. Good engineering knowledge right here!!!
Jake knows his stuff
Great video! Excited for the rest to follow!
+Mike Moore we have a lot on tap to teach.
Really helped explain, putting a 4 link on my drag s10 here soon🤘🏾
awesome also see this video- ua-cam.com/video/UzayUxQCWaY/v-deo.html
Excellent crash course and a lot of excellent info!! Thank you!
Glad it helped
@@BustedKnuckleVideo
How do you determine/set ride height on a rock crawler/ bouncer? Obviously lower the COG is best but how do you balance COG with ground clearance and shock travel?
We try to find the best balance of all 3
Very good info!! Thanks
glad to help
Thank you. The video has helped me. Trying to triangulate the front. And remount track bar to match steering geometry. Using a wider axle. My triangulation degree needs more on wider axle. Thanks again.
glad it helped
Fantastic video thanks for the info, Jake.
Thanks for tuning in!
Wow what a great informed video with great videos. Keep that up.
Thanks, will do!
Perfect! Thank you.
👍
Great video.
Lots of knowledge
Still a great video and explanation.
Thanks for taking the time to make this video👍👍🔥🔥
Glad it was helpful!
Thank you Jake .
he knows his stuff
I work as a car chief on a nitro funny car and have no clue about this stuff but I have watched your vids for about 3 years and from them I have learned quite a bit. I also learned I live 1 mile away from Randy Slawson . He is letting me help race prep his rig , now I just wish KOH didn't conflict with NHRA so I could be out there to watch! Keeps it coming AWSOME job
Very cool! Randy will know a lot of information on how to tune a 4 link and even more about chromolly fabrication. My next videos will be aimed at the advanced fabricator looking to get more performance out of their link design.
+Jake Burkey Keep up the good work!
This video was extremely helpful. 👍
glad it helped
Awesome information!!!
Glad it was helpful!
Really helpful video thanks
Glad to help
AWSOME vid!!! Very informative!!
+Nick Holm thanks
Jus saw this video, Love BustedKnuckle and Jake Burkey:Knowledge and Fun🍻
Thanks Reagan!
Now that was a great vid. Alot of stuff I forgot and didn't know.
+prancstaman it turned out great.
Going try apply this knowledge to my rc crawler / bouncer especially the link placement
should work the same
Great video. Thanks!
You bet!
Great video thanks... Look forward to the rest of the series
+Brett p thanks
+BustedKnuckleVideo to be honest i can only watch so many videos of trucks running... but give me facts and data and technical info... that stuff i can watch for hours if i am learning...
Great video
Thanks
Great video - Very interesting!
+Scott Walsh jake knows his stuff
Using your knowledge for my RC build.
good call
damn....awesome data! Loved the broomstick / link angle comparison.
+Tony Bolton Jake knows his stuff
Great informative vids!! Thanks for breaking it all down.☠️
Glad to help!
very good!!!
+Brad Kovacs thanks!
Awesome clip, it would have been good to see before I built mine. I'm in line with everything you said except in the rear my top links are longer than the bottom ones. Its duel triangulation about 3" longer. What will be that affect. Thanks Again.
Do you have an IFS geometry video? I want to know if I can move my upper a-arm pivot point back and up. And lengthen my upper a-arms to get more wheel travel. On a 2014 ram1500.
Great info . thank you
thanks for tuning in!
I've just started getting into wheeling this year and have a long way to go in my 4wheel education. Although I'm in a rock crawler and not a bouncer, a lot of this information works for both setups and is very helpful. Thanks for taking the time to put these videos together. Would you be able to one discussing roll cages regarding design & fabrication and what are some "do's" and don'ts"? I'd like to build a new roll cage but not sure where to start from a design standpoint and where to take it from there.
+ctcutler Ill see what we can do
great information!!!! great videos!!!!
+jeff young thanks more on the way
Very informative
Jake knows his stuff
Best video on UA-cam I’ve seen in years! 🙌💪🔥
Thanks!
thanks a ton for the info!
glad to help
good stuff
Thanks
thanks!
subscribed.
thanks we have more Rock Rods Tech on the way!
I have a question on the angle of arms you say around 60 degrees is what you shoot for is that between the two arms or each arm parrelel from the vehicle ? Thanks
Thanks for the great video... I'm starting a build using rockwells and noticed a lot of people use a single triangulated (lower) and parallel uppers due to the large chunk up top. The rear should not be a problem for double triangulated 4 link but the front is a challenge. Would you mind (if and when you time) doing a video like this one about doing single triangulated 4 link? Thanks again! Keep up the good work!
+Boris Morris a single triangulated 4 link is not recommended.
I'm designing my rig at the moment. When are the next videos coming out with roll centres and all that?!
Great info from a specialist, just what I needed!
+Philip Antoniou Anti Squat and Anti Dive video is uploading now!
+BustedKnuckleVideo are you sure? I can't find them on your feed!
+Philip Antoniou ua-cam.com/video/UzayUxQCWaY/v-deo.html
So I’m building my first linked suspension system. Mine is having issues. I’ve tried adjusting castor with no results. All my links are right and my track bar is tight. All my brackets and components are new. The only difference I can see from what you’ve described is my lower control arm angles. They’re steep at about 14 degrees. Would this cause my jeep to wander? What reaction do you usually get out of a suspension with too steep of lower control arms?
Hi I'm looking for some advice if you don't mind...
OK I have a toyota hilux double cab and I'm wanting to use a triangulated 4 link on the rear, but I also want to extend the frame so I can fit an extended tub. Would it be better to:
Cut and put a piece inbetween
Or
just weld on a piece it at the rear?
great video! currently doing my own mini build, just a lightly offroaded TJ, was thinking about doing a three link with a track bar for the front, could you do a video like this but for three link setups?
+rampage577 we dont do those for bouncers
Does keeping the upper and lower link bars the same length work for a single triangulated 4 link system or is it just for double triangulated system? My truck is offroad only and we set the rear up with shorter upper link bars than the bottom.
I had a question for 35" tall tires or the metric equivalent would a factory Jeep Wrangler wheelbase need to be stretched out to 95"-100" or would the stock 93.5" or so wheelbase be fine to be for general offroad use? I do plan on using slightly wider (built Ford 8.8) axles if that makes any difference. Thanks
amazing thanks for making this video
thanks for watching
do you have any advice for a first time builder
watch all of these videos lol, and make sure you do it right the first time or it will cost way more in the long run
Great video thanks for all the information. I can't wait for more videos explaining the technical stuff. I've been searching and searching online for a video about building a 4 link, there are almost none.
Do you want to try to triangulate the lower links as much as possible? I noticed some people make the "frame side" of lower links really close together, and mount them on a cross member. But some people only give the lower links a little bit of triangulation, and just mount them to the frame rails.
I know it has something to do with, and can change your roll axis/center. Maybe you will touch on that in a future video, and I'm just jumping the gun. But is there a preference?
+Jake McGibbon Lower links triangulated more will help protect the driveshaft from rocks but will not be as predictable at high speeds as lowers that are a little farther apart.
can i take this class instead of physics
if only that was an option, hello class my name is Professor Burkey HAHA
If you watched it, you just took it... ; )
Hi Jake, Thank You so much for the high quality parts you sent! I completed the front four link with limited geometry due to obstructions, however in the rear I have more room and was wondering how the upper and lower link horizontal spread at the narrow ends effect travel and articulation characteristics? Should they be as close as possible? Or are there aspects I should be considering when choosing the link bracket mount locations? Thank You!
close as possible at the narrow end within reason.
Looking to 4 link an 05 ram, great info!
good idea
Jake, in the TRIAGED program, when entering the link length, is it the actual heim to heim length?
It would be awesome if you did a video on 3 link setup and design.
we don't really do 3 links
Not sure if the same rules apply here but im getting ready to start a mega mud truck build on my f350 superduty using 2.5 rockwell toploads. Alot of people tell me the upper and lower link bars need to be the same length and have the same link seperation at the axle as they do at the subframe. Along with a 15* link rise. And to keep the lower links parallel and only have the upper link triangulated.... any input would be greatly appreciated
That is a whole different ball game as you are wanting the suspension to do different things in a mud truck
I need your help on double triangulated. I have 48 degree on the bottom and 30 degree on the top I know it’s not right but I’ve seen straights on the top my issue is side to side movement shud there be zero movement
hey great video! very informational! however i have a question. You say try and keep the upper links flat and the lower at around max 10 degrees. Is this at full bump or at ride height?
ride height
I love the video. So when running a cv driveshaft you want the pinion pointed at tcase throughout the suspension cycle correct? And to do that you make your links approx the same length?
you want it to point at the tcase that is correct, links are not the same length though, that also depends on link mounts
Thank you sir
glad to help
sir
four link suspension is helpful for electric tractor ( two wheel drive) for front wheels ?
Which it is having 44 inches wheel base and 32 inches track width
GREAT video!! Thanks! How much of a difference do you think the shorter upper front links make for on road use. I see lots of 3 link + panhard kits using combination brackets (combines upper & lower mounts) for the frame and I'm wondering if this means I should avoid them and get individual brackets so I can do a shorter upper. I'm building an Jeep LJ on 40s and expect 75% road/25% off road use.
I would go with individual brackets
Does the same geometry apply if you just link the front? I was thinking that keeping my rear leafs would keep me stable? Great videos!
Yes the geometry is the same
Mr. Jake great vid, Do you have a hiem joint recommendation?
we sell some quality ones over at www.bustedknuckleoffroad.com
Is there any info on the buggy at 1:35? Would like to follow them and see more of that buggy/jeep! Thanks in advance
That is a samurai buggy
Thanks for these vids. Now I have to go see how bad I screwed my links up. Lol
+Alex Worobetz lol it makes a big difference
for the love all things that are holy thank you for this video after reading 22 pages on pirate and still scratching my head this just answered alot of questions for me. how do yall tap the 7075 AL tho @ a machine shop just know the pitch of te threads for the rod ends that you are using?
+Bobby Christiansen Machine shop can take care of it for ya.
Do you have any problems with corrosion do to dissimilar metals when using the aluminum tubing?
Thank you for the video!
not at all
Hey Jake...Great information on 4-linking. I just have a quick question related to triangulation. In the rear of the vehicle, can the four links be setup with the upper arms straight (essentially running under the frame) and the lower arms be crossing with no track bar? Wouldn't this design setup (single triangulation in the absence of a track bar) lead to a rear steer issue and stability problem with the vehicle??? Would really appreciate your expertise on this question. Thanks - DMZ
It won't have near the control of a traditional double triangulated four link.
Loved the video. But what about angling the links inward? You said 40* minimum 60* is best. It’s fuzzy on that part
Hello, I want to improve my suspension, and I'm very happy with your videos, solving several problems! But I have a question, in 6:50 + -, you speak at least 40 angles, what reference, from what point? Does your picture on the board have the right angles? Big hug and thank you!
the ground or chassis, both being parallel are the point of reference for angles
Thank you! You deserve all success!
Thanks, let us know if we have any more questions.
Hi thanks for this. Can you PLEASE explain, using an image, how and where the separation minimum of 40degrees is measured? Please and Thank you!
its measured to the outer link if they are parallel, otherwise they are measured parallel to the tire wall
Can you guys just design my double triangulated 4 link for my single cab long bed1978 ford f150 and mail me all of the parts and specs? I'm wanting to run 37's with a 7-9 inch suspension lift and a 2 inch body lift (had to have it to clear my headers).
That would be super expensive
BustedKnuckleVideo ball park for the suspension parts and design fees? Nothing in stone of course.
5-10k
awesome vid! do alot of these general rules carry over to 3 link suspensions as well?
many of them do, yes just make sure the panhard and drag link are parallel to each other
BustedKnuckleVideo I have 2 door jk 2013. If I want to offroading in high speed and jumping like king of hammers do. should I do stretch kit for longer wheel base?
It would help!