ATV Drag Racer Forums banner

bike darts at big end

4573 Views 23 Replies 9 Participants Last post by  badassbanshee479
My bike likes to dart side to side at the big end of the track, I just installed spindle mount wheels and tyson drag arms. is it something in the suspension geometry or is it the skinny front tires? Where should the front toe be set? I have it toed in just a hair right now.
1 - 20 of 24 Posts
There probably toed in to much and the only reason why i say that in my opinion is my roommate has a bike and his front tires are wore out on the inside of the tires and everytime i get on it the same thing happens.
usually the front end toe will do that if they are fighting eachother or shovin dirt.
I played with the toe this weekend, seemed to help. Its control able now at least.
QUOTE (badassbanshee479 @ Jul 13 2008, 08:03 PM) index.php?act=findpost&pid=5184I played with the toe this weekend, seemed to help. Its control able now at least.

Caster plays a big part in straight line stability.
I had the same problem.. Reset my castor and toe and now its ALOT better.. still got some tweaking on the toe but.. I'm comfortable now to start making some stronger passes.
Two things...
I don't want any excuses at Bob's Saturday...so get your bikes aligned, and if you guys kept the front end in the air on a wheelie bar you wouldn't have to worry about it darting all over the place...LOL...

See less See more
lol!! no it goes straight down the track! Its when ya let off and try and stop it is when things get alittle harry.

You know the little 4 mills are gonna put a woopin on that 10 mill!!
Leave the excuses at the gate!!!!

Rob and Tommy were talking about that...letting off the gas in 5th and letting the tranny slow you down might help. Try it..you got a dunable...
See less See more
Front shocks may be a tad too soft also tranferring too much weight forward when you let out of it.

Setting the caster so its negative will help alot.

Set the toe-in to zero. You're going straightline so no need for a fast front end with any toe-in.
never thought of the shocks, I am running 300ex shocks so they are alittle soft! I will reset the toe to zero and try some struts!!

how much caster should I have?

thank you for the replies fellas!
You're just going to Bob's... Why don't you strut the front end?
With as stiff as my front end is on my Marvins, mine never darts around with big tires or spindle mounts....
I have just been to lazy to build a set. I am thinking it will have them this weekend!
now that it shifts and the clutch does not slip I think I will be in the mood to mess with it again.
Nice to work on setup/chassis etc. when you're not chasing gremlins like that...huh? I hear ya!!!!
I'll have a whole new look this weekend, with any luck.
Sorry to butt in but what length are the 300ex shocks?
I am running blasters and they work pretty good.
short! I think there like 12-12.5 I can measure them next time I drag the bike out of hiding if ya want.
QUOTE (Backcountry @ Jul 14 2008, 12:53 PM) index.php?act=findpost&pid=5224Front shocks may be a tad too soft also tranferring too much weight forward when you let out of it.

Setting the caster so its negative will help alot.

Set the toe-in to zero. You're going straightline so no need for a fast front end with any toe-in.

Whats the best way to set toe to zero? I cant get both tires right for the life of me..
QUOTE (badassbanshee479 @ Jul 14 2008, 04:27 PM) index.php?act=findpost&pid=5252short! I think there like 12-12.5 I can measure them next time I drag the bike out of hiding if ya want.
If you dont mind.
QUOTE (Fouledout421 @ Jul 14 2008, 06:19 PM) index.php?act=findpost&pid=5264Whats the best way to set toe to zero? I cant get both tires right for the life of me..
I strap the handle bars os they cant turn, then I mark each tire front and rear in the same spot both tires, I then take a tape measure and measure the front distince between the tires mark to mark, then I measure the rear distance mark to mark. it will be at zero when both front and rear meaurements are the same.

QUOTE (BBIII @ Jul 14 2008, 06:46 PM) index.php?act=findpost&pid=5268If you dont mind.

not a problem, should have it out tonight.
bbiii they are 12 9/16 eye to eye mounted on the bike.
1 - 20 of 24 Posts
This is an older thread, you may not receive a response, and could be reviving an old thread. Please consider creating a new thread.
Top