JR Dragster Help

GarageBuilt · 10-18-2009, 08:52 PM

I need pic's of the front axel & sipndles Please. I modified the front axel of a JR dragster to fit my drag cart. I have something worng. After 15 runs. I need new tires. Here are some pic's of what I have. If you can pinpoint where I went worng. I sure would appreciate your help. And your pic's would be helpful also.

mikesmotortoys · 10-18-2009, 08:58 PM

Is it a toe issue? Not much meat on those things to start with - I'd bet if the alignment is perfect, they'll burn that rubber right off???

mikesmotortoys · 10-18-2009, 09:00 PM

Garage - does your cart "pull" any while going down the drag strip? Tire pressure? Can the wear be coming from compensating "pull" at the steering wheel? If those are JR dragster wheels, I'd bet that your drag cart is much heavier than the JR dragster...

monkey-1 · 10-18-2009, 09:02 PM

When you say you modified it, what did you modify? Since there is no camber adjustment, it has to be right on. It could be either a toe problem, or if its not mounted exactly square, it will eat tires.

WickedCarts · 10-18-2009, 09:07 PM

i would say weight and even if you might weight the same the front end og the jr is alot lighter.. also speed

WickedCarts · 10-18-2009, 09:10 PM

they way it looks in the pic with the wheels turned your caster is off

on a jr the tires also lean when they turn just like the full dragsters

DOOmsman · 10-18-2009, 09:39 PM

You need less caster they should flop on turning.

WickedCarts · 10-18-2009, 09:44 PM

less caster will make it turn to easy on high speeds the king pin needs to be 5 degrees +

WickedCarts · 10-18-2009, 09:46 PM

and the TF 100 tires are a very cheap tire we have one on a mi ni bike we are building with 2 motors

GarageBuilt · 10-18-2009, 10:22 PM

Quote:

Originally Posted by mikesmotortoys

Is it a toe issue? Not much meat on those things to start with - I'd bet if the alignment is perfect, they'll burn that rubber right off???

Standing in front of the cart. I have the tires turned in 1/8''

Quote:

Originally Posted by mikesmotortoys

Garage - does your cart "pull" any while going down the drag strip? Tire pressure? Can the wear be coming from compensating "pull" at the steering wheel? If those are JR dragster wheels, I'd bet that your drag cart is much heavier than the JR dragster...

We have been ajusting on the 4 link. Just about there. But yes the cart will leave the line stright. The carts weight is 500 lbs with driver. We have to run 65 lbs tire pressure to keep the tire from rolling off the rim.

10-18-2009, 08:52 PM	#1
GarageBuilt Gone Wild Join Date: Mar 2009 Location: At the race track(Texas) Posts: 946	JR Dragster Help I need pic's of the front axel & sipndles Please. I modified the front axel of a JR dragster to fit my drag cart. I have something worng. After 15 runs. I need new tires. Here are some pic's of what I have. If you can pinpoint where I went worng. I sure would appreciate your help. And your pic's would be helpful also.

10-18-2009, 08:58 PM	#2
mikesmotortoys Gone Wild Join Date: Mar 2008 Location: Rockwall, Texas (Dallas / Ft. Worth) Posts: 7,077	Re: JR Dragster Help Is it a toe issue? Not much meat on those things to start with - I'd bet if the alignment is perfect, they'll burn that rubber right off???
	www.MIKESMOTORTOYS.com www.EZGOPARTSONLINE.com Factory EZGO - Bad Boy Buggy - Dixie Chopper Mowers

10-18-2009, 09:00 PM	#3
mikesmotortoys Gone Wild Join Date: Mar 2008 Location: Rockwall, Texas (Dallas / Ft. Worth) Posts: 7,077	Re: JR Dragster Help Garage - does your cart "pull" any while going down the drag strip? Tire pressure? Can the wear be coming from compensating "pull" at the steering wheel? If those are JR dragster wheels, I'd bet that your drag cart is much heavier than the JR dragster...
	www.MIKESMOTORTOYS.com www.EZGOPARTSONLINE.com Factory EZGO - Bad Boy Buggy - Dixie Chopper Mowers

10-18-2009, 09:02 PM	#4
monkey-1 Monkeylicious Join Date: Apr 2008 Location: Mississippi Posts: 952	Re: JR Dragster Help When you say you modified it, what did you modify? Since there is no camber adjustment, it has to be right on. It could be either a toe problem, or if its not mounted exactly square, it will eat tires.

10-18-2009, 09:07 PM	#5
WickedCarts NOT a Sponsor Join Date: Jan 2009 Location: So CAL Posts: 2,147	Re: JR Dragster Help i would say weight and even if you might weight the same the front end og the jr is alot lighter.. also speed

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10-18-2009, 09:10 PM	#6
WickedCarts NOT a Sponsor Join Date: Jan 2009 Location: So CAL Posts: 2,147	Re: JR Dragster Help they way it looks in the pic with the wheels turned your caster is off on a jr the tires also lean when they turn just like the full dragsters

10-18-2009, 09:39 PM	#7
DOOmsman Gone Wild Join Date: Jul 2008 Location: Reddick IL Posts: 11,220	Re: JR Dragster Help You need less caster they should flop on turning.

10-18-2009, 09:44 PM	#8
WickedCarts NOT a Sponsor Join Date: Jan 2009 Location: So CAL Posts: 2,147	Re: JR Dragster Help less caster will make it turn to easy on high speeds the king pin needs to be 5 degrees +

10-18-2009, 09:46 PM	#9
WickedCarts NOT a Sponsor Join Date: Jan 2009 Location: So CAL Posts: 2,147	Re: JR Dragster Help and the TF 100 tires are a very cheap tire we have one on a mi ni bike we are building with 2 motors