Two_Stroke_for_Life Posted December 23, 2018 Report Share Posted December 23, 2018 Looking for input on what’s the best A-Arm width and pitch forward to use for street riding? Currently on a +2 +1 Setup. Also what axle width and swing arm length is ideal to match? Currently using a +2 axle and +2 swing arm. Thanks Quote Link to comment Share on other sites More sharing options...
locogato11283 Posted December 23, 2018 Report Share Posted December 23, 2018 Narrower. Further out front. 26” drag axle. Quote Link to comment Share on other sites More sharing options...
Two_Stroke_for_Life Posted December 23, 2018 Author Report Share Posted December 23, 2018 Narrower than factory? Quote Link to comment Share on other sites More sharing options...
Tedder Posted December 23, 2018 Report Share Posted December 23, 2018 Both of our 1/4 mile asphalt bikes are setup -1 narrower and +2 Forward plus 14* positive caster. Don't know what all types of riding you'll be doing but with those specs on stock frame mounting points the geometry is very much for a straight line ride only. Quote Link to comment Share on other sites More sharing options...
Two_Stroke_for_Life Posted December 24, 2018 Author Report Share Posted December 24, 2018 Okay I’m not using this bike in a straight line. It is used for pavement only quadcross/flatrack/TT scenario. So I would assume wider is better? And how much forward to move the A-Arms as well as what swing arm length is best? Quote Link to comment Share on other sites More sharing options...
gusto Posted December 24, 2018 Report Share Posted December 24, 2018 Plus 2 or 3 wide plus 1 ahead for a arms. -1 if your a big guy -2 if your not for swing arm only 1 degree caster on your top to bottom ball joint 5 camber on wheels +2-4 on the axle Quote Link to comment Share on other sites More sharing options...
Two_Stroke_for_Life Posted December 29, 2018 Author Report Share Posted December 29, 2018 Okay thanks. I’m understanding everything except what the purpose of using a shorter swing arm is? I’m a small guy about 140lbs? Quote Link to comment Share on other sites More sharing options...
gusto Posted December 30, 2018 Report Share Posted December 30, 2018 Better handling more traction. Tt or flatbtravk guys usually go -2 Quote Link to comment Share on other sites More sharing options...
Two_Stroke_for_Life Posted January 2, 2019 Author Report Share Posted January 2, 2019 Okay that is understanding. I suppose with a strong motor setup they have trouble keeping the front down during acceleration? Also what shock height and setup is best to use? Quote Link to comment Share on other sites More sharing options...
gusto Posted January 2, 2019 Report Share Posted January 2, 2019 Youll need a sway bar. Some guys run a r1 shock, some guys run a normal shock set up, some guys go no link swing arm, some guys use lowering kits.... send TrickedCarbine on here a PM he races Quote Link to comment Share on other sites More sharing options...
Two_Stroke_for_Life Posted January 2, 2019 Author Report Share Posted January 2, 2019 Okay. Yes a sway bar I have already. My build is a LSR chassis this time and I’m going all out with custom aftermarket everything on this new chassis. Also you think long travel arms are better also or no? Quote Link to comment Share on other sites More sharing options...
gusto Posted January 2, 2019 Report Share Posted January 2, 2019 I’ve thought about this. The site owner would know this but I’m wondering if you had DC Pro a arms and Fox air shocks could you take out the air and compress enough for TT then air up the shock for long travel? If you could that would be the ticket. Your going to want to cut weight so LSR hubs would be nice and their swing arm is one of the best. I would run two rear shocks. Get a stock one (they’re good shocks) re-worked and cut down for flat track. depending on the class and competition and track length in your area a 421 serval would be the ticket. if your running against hybrids with street bike engines and long tracks like here in Canada you’d be better off going with a super serval or bigger. $$$$$$$$$$$$$ Quote Link to comment Share on other sites More sharing options...
gusto Posted January 2, 2019 Report Share Posted January 2, 2019 And if this bike is strictly for flat track and you would not be using it for nothing else don’t waste money on the LT a arms. I would go through ATV galaxy and get the LSR a arm and axle deal they sell and choose the shock of your choice. I’d consider the +3 a arms Quote Link to comment Share on other sites More sharing options...
97Screamer Posted January 2, 2019 Report Share Posted January 2, 2019 (edited) 19 minutes ago, gusto said: ... Fox air shocks could you take out the air and compress enough for TT then air up the shock for long travel? No. Adjusting the air pressure is equivalent to changing the stiffness of the spring. Every float has one length just like a normal shock. If you run it with too little air it is still that length, just tons of sag and no real damping. Edited January 2, 2019 by 97Screamer Quote Link to comment Share on other sites More sharing options...
gusto Posted January 2, 2019 Report Share Posted January 2, 2019 2 minutes ago, 97Screamer said: No. Adjusting the air pressure is equivalent to changing the stiffness of the spring. Every float has one length just like a normal shock. If you run it with too little air it is still that length, just tons of sag and no real damping. I’m wondering without the force of springs wouldn’t a guy be able to take out air, hook up the sway bar and not have the upward force of a spring shock? I’m be never had an air shock btw Quote Link to comment Share on other sites More sharing options...
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