suspension tech 101.... short course vs. crawler

[mudn_1]

Let's discuss suspension setups, and differences in the way you setup a shortcourse truck vs. your comp rig and everything in between....

[Duuuuuuuude]

Seriously? That's like asking how you ride a horse compared to how you fly a plane.

[EeePee]

Originally Posted by Duuuuuuuude

Seriously? That's like asking how you ride a horse compared to how you fly a plane.

Hmmmm. Interesting.

Can you go into more detail? I'm not so sure I'm seeing the difference.

[Duuuuuuuude]

Originally Posted by EeePee

Hmmmm. Interesting.

Can you go into more detail? I'm not so sure I'm seeing the difference.

Airplanes typically aren't covered in horse hide. They also aren't powered by carrots.

[EeePee]

Originally Posted by Duuuuuuuude

That's like asking how you ride a horse compared to how you fly a plane.

Originally Posted by Duuuuuuuude

Airplanes typically aren't covered in horse hide.

Not seeing the comparison.

[Duuuuuuuude]

Originally Posted by EeePee

Not seeing the comparison.

Airplanes don't have teeth.


Teeth painted on the side doesn't count.

[EeePee]

Hmmmm. I'm not following. Airplanes wouldn't have teeth, they don't need them. Beer maybe, but not teeth.

Wait.

I get the reference. I agree!! The Jeffersons are hilarious.

[Duuuuuuuude]

Originally Posted by EeePee

I get the reference. I agree!! The Jeffersons are hilarious.

Happy Hanukkah! May all your giblets bring you glorious intrepidations and festive glucosamine!

[The Jackalope]

You guys are about as serious as a case of E.D.S.

Keep it up boys. I'm still laughin!

Nothin to say on the thread topic. Just to be clear. Been studying 4-link tuning for a month now. more confused than eva!

[C*H*U*D]

Actually a comparison of these two types of vehicles would be interesting. It's why I don't like to use the term squat, and prefer thinking of our situation as suspension jacking.

[Duuuuuuuude]

Originally Posted by C*H*U*D

Actually a comparison of these two types of vehicles would be interesting. It's why I don't like to use the term squat, and prefer thinking of our situation as suspension jacking.

To be serious, there is only a couple of things that cross over that I can think of. But still, we're comparing two rigs that couldn't be any more dissimilar unless one of them were running square wheels.

[Draggermirage]

Suspension design differs between them enough to where it's hard to make any comparison. Your typical crawler is a solid axle 4-link or leaf spring setup where the SC truck is a double wishbone independent arm setup.

Terrain makes a world of difference in each realm for general setup.

Spring rate, damping pack and rebound, shock angles, link angles, arm leverage, ride height, sprung and unsprung weight etc. All these are application specific for proper tuning.

A more relavant comparison would end up being comparing suspension setup between a shafty rig and a MOA. Even those differ some due to overall unsprung weight.

Marcus

[C*H*U*D]

Originally Posted by Duuuuuuuude

But still, we're comparing two rigs that couldn't be any more dissimilar unless one of them were running square wheels.

Originally Posted by Draggermirage

Suspension design differs between them enough to where it's hard to make any comparison.

It's actually the dissimilarities that I was referring to.

[jcboof]

Originally Posted by Duuuuuuuude

Airplanes don't have teeth.


Teeth painted on the side doesn't count.

I seriously don't know why I can't stop laughing.....

[mudn_1]

lets revitalize this.... the reason for asking is I understand the difference in suspension setups as far as 4 link, 3 link, straight axle or independent etc.

I am asking the difference is how you setup a shock based on terrain and what you do with the rig...like say you have something like a wriath, 4 links, staight axle, and you want to go fast, but crawl decent as well... what differences would you make in the spring rates, shock oil, etc to make it perform....

or you have a 4 linked straight axle desert truck, what would you base the suspension setup off of on that?

shock angle? how is it figured on where the shocks are mounted?

I guess I am asking if its all trial and error? or if you have certain basis you use for setups?

[sidehiller]

http://www.thirdgen.org/techboard/su...readsheet.html

I know these spread sheets are ment for full size but should work for rc also.......

Sent from my GT-I9100M

[Duuuuuuuude]

For a good all around setup you'd have to find a happy medium between the two. Pick the one that is most important to you and start working your way towards the other one.

[Nabil]

If you know how to set up a short course truck in terms of controlling left to right chassis roll, you can setup a crawler and vise versa.

If you take the rear of any independent suspension vehicle and look at left to right, it translates directly to a crawlers link geo front to back. Your a arm acts the same way as a lower link, and your camber link would be the upper link. Camber change is the same as pinion angle change, longer camber links effect the car the same way as a longer upper would affect a crawler, and so on. It's just a matter of left to right movement of a sc behaving the same way as front to back movement and weight transfer on a crawler.

I have been running a lot of pro level sc and mod buggy lately and what I know from crawlers directly translated over to the race vehicles. It definitely allowed me to lessen the learning curve and progress much faster

[mudn_1]

well I just know when I setup a truck, I am either just trying to match a wheelbase, or wherever the links I currently have will fit (LOL), as for pinion angle, I just try to make it as straight as possible toward the trans....or try to be parallel with lower links... but how do you figure shock angle, oil weght, spring rate, holes in diaphram etc..... I just use trial and error, and in general want the truck to sit around half travel.... but I'd really like to see what others base it off of....