hey guys i just put together my 12a that i full bridge on..and i was wondering whats the best rpm to launch with out snapping my rx2 rear?

 

you're missing many parts to the equation

 

Let me translate for the Wack....est. max power, trans, d-shaft, wheel size in the rear...with or without slicks?

They are pretty sturdy, but not unbreakable. Several 7000+rpm launches with a strong clutch and slicks will snap that baby in a run or two....at least twist the **** out of your axles. I'd say they will hold 180hp with 5000rpm launches....how long, who knows....another thing to consider is the age and condition of the rear. Is the oil good? No play? etc.....

 

i broke only 3 axles in10 years on a stock rear end in my RX-3SP,24.5 x8 slick,i launch at 9500 rpm to keep from breaking axles as often.

 

You must have been real lucky or the later rx3 axles are stronger than the rx2 axles. I broke 2 stock axles in my rx2 using street slicks at 16psi and launching at 6000rpm. The only thing I can recommend is using a higher tire pressure to let the tires spin a little and you can slip the clutch too. This is the reason I am putting a ford 9" in my rx2 as we speak.

 

key component is the high RPM launches,it allows a little bit of tire spin,it shocks the tires just enough to not break axles,i learned by listening to Rob at Pineapple Racing.

 

What tire pressures were you running?

 

15 psi