Hyper 8, 2 speed?

[Thirdgen89GTA]

I have a Hyper 1/7 Evolution. Hobao's answer to the Inferno GT, maybe it even predates the Inferno GT I am not sure. It originally came with a 2 speed + Reverse transmission. I broke 3 of these the same way in the pics below. The normal 2spd without reverse seemed to have held up, but it no longer has the monster 528xr I switched it to a less powerful OS engine.

What i can tell you though is that it comes with a 2spd transmission and its is not available in the US. I was able to order it from RCMart.com when I got the part# but I don't know if its available anymore. The Part# is 19537, and according to my Hyper 1/7 manual its $152. Nitrohouse.com has a listing for it under OFN19537 and its priced at $135. http://www.nitrohouse.com/advanced_s...05d526&x=0&y=0

Would I run the 2spd with a nitro car? Absolutely because of the narrow power band of a 2 stroke engine. With a brushless car? Forget it. They are far more fragile than a spool or center differential would be. I have pics of carnage where my big displacement nitro motors would sheer through the metal on the 1-2 upshift at WOT.

Check out these pics. This is what a Novarossi 528XR did on a 1-2 upshift at full throttle. The cam that catches the internal pin for 2nd gear sheered straight through the metal. It was failure that took place over 2 or 3 upshifts within 5 minutes of fitting the 528XR to the car.

A brushless would exhibit just as much if not more torque on the upshifts. If you are brushless forget the option of a 2spd. Its been tried and many have failed. You can't go wrong with a center spool, or center differential.

I later replaced it with a normal 2spd w/o reverse and that has held up much better but I've always been careful to let off the trigger during the upshift to reduce torque.