what the hell is up with my gt rear suspension ?

[quad janern]

hi
i just purchased a gt thunder mx link and a 05 450r re-valved rear shock. the seller said it was valved for 160lb mx rider.

to day i installed the shock and the link on, and i saw pretty quick that with the new link in its going to be pretty low in the back.
i diddn`t think much more about it, until i sat down on it. man this thing is low ! !
when i was sitting back on the seat the link almost touched the flor :O

i stiffened the whole shock, and tried it and it got 9 cm`s higher but still to low.
i can imagine jumping with it, bottoming out at once :P

so i took of the shock and installed my stock shock i had before
( this stock shock is not re-valved. its quite stiff and i can jump pretty big, land hard and not bottoming out. so i thought this might be better)

installed the shock on and it was even worse, much lower. its so low i cant ride with it on the track. may be good for flat track racing but... eh...
so right now im quite confused :confused:

i can show you some pictures tomorrow of this if someone is interested to see it.


what can be wrong here ?

[Sjorge450R]

i bet you have a 06/07 link. Those are alot different than the 04/05. Do you have a pic and or link to it? We will be able to tell you. Also, maybe you have it on backwards.

[quad janern]

yeah i might have a wrong link. the seller said it should fit 04/05, so theres a chance.

here is some pics:
http://i24.photobucket.com/albums/c33/jan-myers/P1310054.jpg
http://i24.photobucket.com/albums/c33/jan-myers/P1310055.jpg




some with my dad sitting on it:
http://i24.photobucket.com/albums/c33/jan-myers/P1310058.jpg
http://i24.photobucket.com/albums/c33/jan-myers/P1310060.jpg
http://i24.photobucket.com/albums/c33/jan-myers/P1310059.jpg


http://i24.photobucket.com/albums/c33/jan-myers/P1310056.jpg
http://i24.photobucket.com/albums/c33/jan-myers/P1310061.jpg
http://i24.photobucket.com/albums/c33/jan-myers/P1310062.jpg
http://i24.photobucket.com/albums/c33/jan-myers/P1310065.jpg




:confused: :confused:

[Sjorge450R]

hmm. Appears to be the right link. Im stumped. See, usually, when GT thunder or Derisi uses there link, the acually lengthen the stock shocks. Maybe thats the problem.

[tfuchs]

The height looks about the same as my GTT Setup. I know it seems really low but it works great. Put it on and go jump something and see how it works.

[quad janern]

Originally posted by tfuchs
The height looks about the same as my GTT Setup. I know it seems really low but it works great. Put it on and go jump something and see how it works.


seriously ?? :eek2:

i cant jump this thing, nooo wayy.
it just going to bottom out all the time.
but i could send my "revalved" rear shock to one who knows shocks, and make it stiffer. valve it for a 170-180mx rider and try that out:confused:

[JessetheKid]

try it out, it looks good to me for a mx set up you definatally want the rear end to sit way lower for cornering, and the shock is going to have full travel in the air when it has no preload

[d3ktrix]

No offense but going by the pictures u dont look like a 160lb rider. That could make a big difference if the shock is too soft for your weight. Which could be causing ur low ride height.

[WOLFPACK]

First thing i noticed is that you are running a stock front end. The link you installed is meant to lower the rear and at the same time provide additional travel. You have increased the force on the rear by having the front higher in the front than the rear.

DeRisi, GT Thunder and our shop included do not lengthen the stock shock as someone stated. We can lengthen it but that is not a normal mod for those just adding the link. What we do is increase the travel by about 1 inch.

It is very possible that the shock you have is not working properly. Send me a PM and i'll tell you how to test it.

I hope this helps!

Shane

[tank69]

Have you set the sag yet?

[quad janern]

Originally posted by JessetheKid
try it out, it looks good to me for a mx set up you definatally want the rear end to sit way lower for cornering, and the shock is going to have full travel in the air when it has no preload

hehe, its my dad sitting on it. im the one who takes pictures :P
he jumped on it so you guys can see how low it is. of course, he weights lots more than me, but i think my rear brake system can hit my air filter box when jumping a little big.

WOLFPACK:
yeah maybe my shock is not working properly. i think im going to ask a guy nexT week if he can take a look at it.

but would a stock re-valved shock with triplerate springs work better on the gt thunder link? would it be stiffer than the stock original spring ?

and one other thing im wondering about.
if i want to make my re-valved shock tighter. will it help to fill more gas in it or wiL it be stiffest by adjusting the spring.
i have adjusted the spring as hard as i can, and still it`s not that hard. so im a little skeptic. can i fill more gas in my reservoir to get even stiffer ?
im just wondering which of these 2 adjustments tights the shock most.

:confused:

im not a shock specialist. :ermm:

[400exrider707]

Stock fronts with a GT rear setup is no good. I wouldn't even try anything else with that rear end until you have a front end on it... no way will you ever get stock fronts (without a rebuild) to sit like they should to match the rear. It does look a little low, but you also have the front end very high in comparison.

[Pred_003]

quad janern.... You should have bought the whole set up i had for sale and you wouldn't be having this problem!! :devil: Just kidding... good luck man

[Bad Habit]

Link doesn't look right to me. Look how you're dogbone is almost pointing straight down compared to my 05 with MX link. Also look at the dimension from the rear bolt for the dogbone to the lower shock mount bolt. Your link appears to be too long, which will make the shock mounting points too far apart.

http://i24.photobucket.com/albums/c33/jan-myers/P1310056.jpg

[Jersey450R]

Originally posted by Bad Habit
Link doesn't look right to me.

http://i24.photobucket.com/albums/c33/jan-myers/P1310056.jpg

i was going to say that also..

[WOLFPACK]

Originally posted by quad janern
WOLFPACK:
yeah maybe my shock is not working properly. i think im going to ask a guy nexT week if he can take a look at it.

but would a stock re-valved shock with triplerate springs work better on the gt thunder link? would it be stiffer than the stock original spring ?

and one other thing im wondering about.
if i want to make my re-valved shock tighter. will it help to fill more gas in it or wiL it be stiffest by adjusting the spring.
i have adjusted the spring as hard as i can, and still it`s not that hard. so im a little skeptic. can i fill more gas in my reservoir to get even stiffer ?
im just wondering which of these 2 adjustments tights the shock most.

:confused:

im not a shock specialist. :ermm: If it doesn't sit right without weight on it won't sit right with.

Shocks are charged with nitrogen between 150 - 200 psi. In your case it probably won't help to increase the pressure.

There is something wrong either with the set up or the shock itself. If you can safely remove the spring from the shock, push the shaft all the way in and see if it rebounds completely. If it returns, after it stops try pulling it up further. If it moves or doesn't rebound at all the shock is bad.

It appears that you have the stock spring on that shock?

I hope that puts you in the right direction. If you need more help just ask.

Shane

[Colby@C&DRacing]

Originally posted by Bad Habit
Link doesn't look right to me. Look how you're dogbone is almost pointing straight down compared to my 05 with MX link. Also look at the dimension from the rear bolt for the dogbone to the lower shock mount bolt. Your link appears to be too long, which will make the shock mounting points too far apart.

http://i24.photobucket.com/albums/c33/jan-myers/P1310056.jpg

I agree looks like an 06 link to me.

[quad janern]

i think the link is the problem too.
and if you ask me theres lots of difference between my link and "bad habit"`s gt link. looks like my link is longer than hes.
it looks like the dogbone mount and the shock mount has more distance between each other on my link than on "bad bait"s link.
check it out.

http://i24.photobucket.com/albums/c33/jan-myers/Picture156456.jpg

http://i24.photobucket.com/albums/c33/jan-myers/Picture1454.jpg

[dober250R]

06 link, or it's put on backwards

[d3ktrix]

Originally posted by dober250R
06 link, or it's put on backwards

nah its on the right way, it just looks too long.

Email GTT a picture.