5.04 Leaf Springs & Shackles GURU Level Tech!
Vložit
- čas přidán 5. 03. 2019
- I learned so much from making this episode. I go DEEP into the tech behind leaf springs, shackle lengths and shackle angles using my homemade Bored o' Leafs. I hope you get something out of it!
Here is the formula I used
H = Sin(A) * L
Or, where SpL = spring length (dead flat), and MH = the distance between spring mount and shackle hanger:
MH = SpL - Sin(A) * ShL - Zábava
No one could explain my question but you did .
Thanks for that paractical example. With out it i couldn't decide what to do.
Don't apologize for the color! That pale yellow is rad!
Matt...one of the best videos ever put out on suspension. It's been such a mind boggle to understand this. This makes it totally comprehensible. thank you.
Matthew Mugar wow what a compliment! Thanks Matthew!
Good presentation ...Matt
I have query about shackle length design.
Spring span length 480 and spring height 145 mm,no of leaves 6
May I know what length required for shackle and installed angle minimum.
Thank you. you really illustrated how the leafs and shackles interact on a leaf suspension. learned a lot
Excellent presentation and superb demonstration Señor! Thank you for taking out your frustration on camera and sharing your learning journey with us 💪
I’m not a leaf spring guy at all, but now I feel prepared to become one of the day comes! Thanks professor.
Excellent demonstration on how leaf springs and shackles work!
Great video, I am mounting leave springs from scratch and this video gives me a lot to think about! Also I love the practical use of trigonometry!
Thank you! I learned so much about my favorite kind of spring. Gives me a good idea on what to look for when working on my 73' C10
Dillon Opossozoku happy to help!
Thanks for helping me understand effective spring rate as it relates to leaf type suspension. Subbed.
Thanks so much!!! I'm doing a solid axle swap and it was very nice to see the angles.
Solid prep on this bad boy, love it
What a great video . Thank u so much for making sense of things most can't wrap their minds around
Finally !!! Great vid on leaf spring & shackle angles. 👍
This is awesome. Thanks for making this video. Confirmed a lot of what I was thinking and also learned a lot.
The most most knowledgeable video. 😊
Wow!!! Why didn't I find this video before!!! This is gold to me!!! My old F350 rides like an old wild west chuck wagon. Thanks so much for this video!!! 👍👍👍
Happy to help.
Thank you for making this video. Very informative and helpful!
Great subject and good job on the tec talk!
Great video bud. i have always eye balled the shackle angle and run flatter springs. Usually works really well.
Appreciated! Only improvement (suggestion) would be to have used a scale to measure the change in resistance (spring rate) between each of the mounting locations. Expressed as a percentage (rather than in pounds for the sake of the model). Great demonstration and the bloopers were cool too!
Great video thanks for adding the bloopers at the end. It shows how much work goes into making such a good video.
Thanks Ben! Yes it was a lot of work but it’s also one of my most watched videos so totally worth it considering how many guys have gotten something from it.
AWSOME VIDEO! Thanks so much for making this. I love seeing stuff like this. I’m currently planning out a front a rear axle swap on my Jeep. I’m also putting in a new sua rubicon express lift. This information was hugely useful and encouraging for me. I can give myself an improved shackle angle and stretch my wheel base a little at the same time! Thanks again!
William Burch happy to help. Just keep it at 90 or a little sharper and you’ll be good. Once you get over 90 the ride quality starts nosediving.
You did so amazing on this video. I Will save this video to watch multiple times. Lot of work went into this and I appreciate it so much
Parker Wilstead thanks Parker! Sorry it took so long for my reply. Been swamped lately.
Matt's Garage no worries, keep up the good work!
Great explanation, thank you!
Thank you for sharing your time and knowledge.
The equation is awesomely helpful, thanks for the video!
Thanks for the hard work on this video.
Thankyou for all your effort to help others mate. Cheers. Great vid
Phenomenal explanation! Thank you. 👏
Thank you for to the point and no off topic ramblings! Logic was telling me that diagram was wrong.
Great video, I watched it a few times to realize I can change leaves to fix that shackle angle! Great job, thanks! :)
Outstanding video Matt! I have been building leaf spring Jeeps for years and only 'educatedly guess'ed' the shackle length and location. But now I have some good reliable math to use to take out the guesswork! (Yes, I can do math!) Loved the part "but wait!" I have watched this video about 5 times to make sure I understood and laughed every time!!
Kevin DeGroff thanks Kevin. You forced me to rewatch because I forgot about that part. I appreciate the compliment!
You cracked the real puzzle of leaf spring stiffness relationship wrt shackle angle.
Very informative. Great video. Great explanation.
You did a fantastic job! Thank you!
Thank you. This is the only precise video on this subject in the entire internet.
Wow thanks! Isn’t it crazy? That’s why I made the video. I actually reached out to some TV personalities and asked them to make but heard nothing so I just decided to figure it out myself.
Awesome analysis.
Excellent video this was just what I was looking for
Awesome video !!! Very helpful
Hi Matt,
Enjoyed the info, one thing to help test spring compression and angles
Is to disassemble the both spring packs, using only the main spring and make a small block to replace all the other springs that have been removed, so if it 3 inches of spring that have been remove add in a 3 inch block put your bolt back though the block and main spring mock both springs on the vehicle than with a jack you can compress and release and let hang and get your angles of the shakles and find your bottoming points with your tires on and off as well and side to side relaesd and compressed with out the resistance of all the srings as well as measurements for shocks and brakes line mods, drive line lengths and so on
Thanks for the video!
Amazing demo , I concept of shackles is a lot clearer now👍👍
Great visual Matt. Thanks
Thanks for the informative leaf spring & shackle video. I dig the color of your scout.
Thanks, I changed the color and I hate it now. I’m gonna change it back.
Great info I've been looking for an explanation before lifting my rig. I really want to get it right the first time.
Love the info. Just subscribed. OUTTAKES!
The video I was looking for. Thanks 👍.
Much needed info this video is just what the doctor ordered
Watching.... again. Great info. Thx!
Excellent video. Good job
Perfect video. Im new to leaf springs. And this was very helpful. Got a thumbs up from me
Totally well explained, my shackle angle will be fixed now thx...
Andrew James thanks Andrew. Good luck! I had a guy pull up in a lifted Scout yesterday to bus some parts I was selling. As soon as he got out I’m like “does that thing ride really rough?” And he’s like “yes, how’d you know?” :-)
@@MattsGarage yep cheers I already have it on CAD and worked out, after your lecture ready to make it... Thx again
Very good clear explanation. Thank you so much
Thanks Caesar!
Thank you so much, such a great video. And the bloopers at the end 😂😂😂😂 hilarious
Thanks Bro, great presentation, easy to understand
Thanks matt, really learned a lot from your thorough explanation! Planning to build my Jeep Roadster here in the Philippines, your lecture would be a great help for its proper leaf spring mounting
I have owner type Cj2a with corvette 327 and 4 speed.
This has been the most educational video I've ever seen about leaf spring tuning and shackle angles effecting the ride. Im running pro comp springs and there isn't enough desired flex i need. Might be i just need to adjust or buy shackles before changing out springs. Thanks again
ae86mia happy to help! I made this video because I couldn’t believe it hadn’t been made before. It’s now one of my most popular videos. Crazy.
Love this video great job explaining it
This is very interesting. I am in the process of doing a 63" spring swap on my Tacoma so this information is very useful. Thank You!
mike diltz cool, let me know how it turns out. Good luck!
How did it go? I am in the process of doing that on my 1st gen 4runner. What angle did you end up going with? And how do you like them so far?
@@jesusakadice sorry but I never ended up doing it. I sold the truck when I saw how bad the frame was rotted.
This is the best video on CZcams
Thank you, very informative 👏👏👏
Lots of answers, thanks for that
Very helpful! My truck has a front axle swap. And the ride is awful, while the spring may just be too big. The shackle is 90° at ride height. Time to go make some new mounts and shackles!
Great video, thanks . 👍🏿👍🏿
Great video, not a lot of people running leaf springs in off-road anymore. Ive got some custom made national springs in my chevy 4wd super long and super soft . I love them.
whole video went over my head. I'll come back to it when I can give it my full attention...
For sure. You need to grab a coffee and squint real hard, but there’s good information in there.
I watched this working on a truck. Came back to it while contemplating lifting a firebird for slicks. Im seeing a longer shackle will change my angle
Very cool. Thank you very much.
Great video dude
Awesome explanation! Thank You!!!!
You are welcome!
Since you gotta a IH, I subscribed.
THEE best vid for understanding that is out there!!!
Thanks Adam. Very kind of you.
Thanks so much for sharing this!
Luv the bloopers!
I agree with Matt, very educational indeed, salamat po -from Philippines here.
4am and you just blew my mind
Very, very helpful video Matt. Very easy to follow and you did a great jog. I am one of your slow learners, and I would appreciate it if you could list the steps for calculating shackle mount location.
This was awesome!
Thanks for the leaf spring demonstration, I just checked the 55 truck rear leaf spring shackle I put on 10 years ago, it's straight up & down, there's another hole on the bracket that will change the angle to more movement. Now I know why I hit my head on the ceiling when I drive over a dip too fast. Thanks
When you order Dever lift springs for a stock vehicle do they automatically make the leaves longer to compensate for shackle angle?
Interesting stuff and ya got me hooked. Subscribed
Very much appriciated!
Thank you for this!
As long as the information is correct then this is a great video. Gave me a expanded understanding and reinforcement for my spring suspicions. There are still a lot of questions I have about how various leaf pack mods and setup alterations will achieve different application goals. I think the main scenario that comes to mind is how a longer shackle will affect perceived on-road ride comfort when installed on the same leaf pack and using the same mounting points. This would be ideal for a DIY mechanic with basic tools and a limited budget that wants a more comfortable on-road experience with zero to little (driver+personal items/tools in cab=200-300lbs) additional payload. The problem I've been having is trying to get a smoother on-road ride quality out of a 2003 PreRunner TRD Double Cab. It has thick 3/1 two stage over-spring leaf packs. I'm unsure of the spring rates. Every aftermarket suspension component available for this truck is for lift, load, and/or off-roading/overlanding which all seem to equal a harsh on-road experience unless you're willing to drop $3k+ on 2- or 3-way adjustable reservoir coil overs and shocks and another $1k+ on progressive leaf packs, but even then you'll end up with a 3"+ lift with a 500-1klb payload increase which will then require new control arms, brake lines, diff drop kit, panhard correction kit, new ball joints, an alignment...the list goes on and on. You can do all that to this truck, but so far I haven't found one stitch of information about how to improve the ride quality for a daily driver aside from the snarky comment of "leave it factory". I refuse to accept this.
Well done, thanks!
I like the colour.
Great video
Great info
awesome video! thanks
Thank you for this excellent video :)
Maybe your next subject should be on how to turn your phone on silent, haha
bravo this helps me so much on my chevy k20
Justin Bailey great, happy to help! I am a fan of k20’s. Hope she rides smooth!
I watched any video on youtube and couldn’t find a more elucidative one.
But I have a question in my mind🤔 ıf we replace the leaf springs to a closer point towards to fixed point ,Will it raise the cars rear because of curve on the leafs. I don’t wanna raise the rear of my car I just want more flexible rear leaf springs.
Hi Matt,
1986 Isuzu Trooper 10 bolt rear end/drum brakes/ leafs with non pressed eye bushings/ 70mm shackles.
Upgraded to 89 Trooper RS leafs/pressed front eye/ 2” longer leafs than ‘86/90mm shackles/ about 150lbs greater load capacity.
So I noticed my shackles were at a steeper angle due to using the stock 86 mounting points on frame. A bolt on upgrade. So I got a smoother ride and can load up the trooper with an equal weight loaded without bottoming out over rough stuff.
Thanks for the video! Now I know exactly what my instincts were telling me why to do the mod in the first place!
Eric Jette awesome. It goes both ways. It’s good to hear field confirmation on a rig other than my own.
Good Video! Go in on the effects on castor angle and steering (old jeeps etc) in the next one!
Thanks for your help
David Boyer you are welcome. Happy to help.
Thank you so much 🙏🏽
Thanks. I learned a lot!
This is what CZcams was made for! Thanks man
Thank you!
Great info wow Thank You
Great lesson on shackles. I've searched the whole internet to know how exactly these things works.
Thanks! Yeah that’s why I made the video. It’s shocking how little information there is out there. I was kind of hoping it would spark others to make better videos.
Tq very good learning session from you bro
Awsome job, you can almost feel the spring rates as you move the springs. Question everything! Just don't get paralysis from analysis - get out and wheel, when it brakes, fix it and get back out 😉