3 link vs. 4 link

[tkruger]

I am planing a TLT build. What are the advantages of a 3 link vs a 4 link. I am familiar with a 4 link but have never tried a 3 link set up. Also does any one have any pics of a 3 link set up?

 

[rockwerks]

I am planing a TLT build. What are the advantages of a 3 link vs a 4 link. I am familiar with a 4 link but have never tried a 3 link set up. Also does any one have any pics of a 3 link set up?

the 3 link requires the lower arms to be triangulated and only has one upper control arm.

I the 1:1's you would stabalize the system with a trackbar or panard rod. and for our purposes you will gain no advantage from going three link........just more problems

 

[CustomCrawler]

This is an example of a properly done 3 link

 

[clodman666]

well that's pretty sweet. do you get more travel out of a three link setup?

 

[rockwerks]

This is an example of a properly done 3 link

how much side to side play at the axles?

 

[gregrocks90046]

i've done both a 3 link and a 4 link with my bulu 2 chassis. i got more articulation with the 3 link, but there was way too much side to side slop. the 4 link gave me a little less articulation, but performed 100% better.

 

[CustomCrawler]

If you run an upper link similar to the one in the picture, there should be zero side to side movement since there are two mounting points on the chassis end.

 

[Robb]

In the lightweight RC world, I can't see any real difference between a wishbone and a 4-link. Looking at the above pic, the only difference between keeping that as is, and making it a 4-link, is making the links a little longer and adding another rod end. It is comparing red apples and green apples.

 

[RD400]

I have run 3 and 4 link setups. With a double triangulated 4 link, the axle stays centered under the chassis. If you run a 3 link the axle swings to the compressed shock side.

4 link is much better;-)

 

[dotson]

if you ran a threelink to eliminate the side to side play couldnt you run a stearing sytem like a real car adn the tierods that go from the strearing servo to the axle could double as a track bar ??
this would allso eliminate the stearing servo sittin on the axle and give greater scale apeal?

i hope no one does this so i dont look like an *** pointing out the obvious ??

axle chassis and stearing servo in this no links

 

[fullmodtxt]

if you ran a threelink to eliminate the side to side play couldnt you run a stearing sytem like a real car adn the tierods that go from the strearing servo to the axle could double as a track bar


Very bad idea. You need to have the axle positively located under the chassis. Attempting to locate the axle with the tierod will result in the axle doing the tube-snake boogie under the chassis. Nothing at all will ever double as a track bar except a track bar.

 

[dotson]

what do you mean. it would be under the chassis ?

 

[rockwerks]

if you ran a threelink to eliminate the side to side play couldnt you run a stearing sytem like a real car adn the tierods that go from the strearing servo to the axle could double as a track bar ??


what do you mean. it would be under the chassis ?

No it would not.....a track bar is fixed position on both ends, if you use the steering for this, either it would not steer or the axle would be pushed from side to side

 

[run2jeepn]

A 3 Link done right will not move or swing to either side. Many After Market Jeep Lift kits are Rear 3 linked. If it's done like the first pic it will not need a track bar either.

 

[rockwerks]

A 3 Link done right will not move or swing to either side. Many After Market Jeep Lift kits are Rear 3 linked. If it's done like the first pic it will not need a track bar either.

there is jsut no added benefit for a scale crawler. I get 90* of flex outa my 4 link and it is 100% rock solid setup.

 

[dotson]

ok but will the stearing work like this because, the way my axles are set up the drive shaft comes in on top of the axle rather then in the axle. like say a clodbuster axle is. So for me to not have the servo ontop of the axle would be alot of help ?

 

[rockwerks]

ok but will the stearing work like this because, the way my axles are set up the drive shaft comes in on top of the axle rather then in the axle. like say a clodbuster axle is. So for me to not have the servo ontop of the axle would be alot of help ?

clod axles have the motor in the axle housing........no drive shafts...stand up the servo to one side........so you are using Juggy axles?

by putting the servo on the chassis you will have bind and steering issues under flex. that is why we put them on the axles. No matter what axle you have there is room for the servos

 

[Crawlsalot]

dotson, your visual is funay

 

[rockwerks]

dotson, your visual is funay

gee good insight into the conversation:roll:

 

[run2jeepn]

there is jsut no added benefit for a scale crawler. I get 90* of flex outa my 4 link and it is 100% rock solid setup.

I never said there was a benefit. All I'm saying it they do the same thing. They are both good set ups. One can set up a 3 link with 90* of flex ( Which you don't need) that rock solid as well. I like them both.