drag bike

[Coty23]

I have a 421 cub dat doesn't want to go straight. Always jump to right. Any help or input? All thoughts are welcome

[Burke]

check bearings, bushings, axle alignment, and tire pressure/ circumference 

[Coty23]

Tire pressure n axle right. After 2nd gear make a hard lean to right. N for you skeeter dat doesn't work. HP

[sleeper06]

Front is strutted or shaws a pic of set up would help, if there's shock involved could be the problem , as your accelerating if there's diffrnt resistance it will turn you, I also had an issue with my bar once, I went dirt dragging the weekend before and must hAve tweeted my bar in a rut , then went to aspault and almost put myself in the wall. Round house carrier or stock?

[trickedcarbine]

Round house is mandatory. If everything is squared up, check pivot bearings and carrier bearings. Last but not least. You can use tire air pressure to make it all work.

[Coty23]

Struts, round house carrier.

[SlowerThanYou]

1st place to start/ cheapest IMO is measuring rear tire rollout. We normally do this on new tires & stretch the lesser one to match the greater one. If the tires have been used, like it sounds in your case. Measure to see the difference & share the findings. Usually nothing can be done to stretch a tire that has taken its set. We prefer to keep the difference less than a 1/4 between the 2 tires.

[Coty23]

Brand new mt tires

[SlowerThanYou]

Brand new mt tires

 

It doesn't matter, the rollout needs to be measured. Unless Mickey has gotten better, they were some of the worst for rollout differences.

[Coty23]

Ok I will check it out

[SlowerThanYou]

Are you running on the street?

[Coty23]

Yes

[Pasi S.]

I can´t say or know much, but check your front tire "angles" too. When my front toe and caster angle was way off, I was going left to right.

[SlowerThanYou]

Wheelie Bar,  if 3 or 4 bar & 1 or 2 wheels?

[Coty23]

4bar 2wheels