R/C Tech Forums - View Single Post - Kyosho Ultima RB6 & RB6.6 Car Thread
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Old 08-29-2015, 04:48 AM
  #12370  
Gayosaka
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Location: France, near Paris
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Originally Posted by Jpdanger
That looks similar to the Dirtybits conversion, the DB6. I think the company is called Dirtybits???

I guess I'm jumping late into this conversation, but unless you run on carpet or some other high-bite surface, I don't recommend this.

The Schumacher KF2 (excluding the recent MM conversion) suffers from the same problem you are likely to encounter with this mod. Having the motor closer to the CG drastically affects the amount of rear traction you'll have on anything other than high-bite.

The further forward your motor is the less effect the motor rotation will have on the chassis generating forward traction due to a shorter leverage arm. Adding weight to the rear will help a bit, but not enough to to be effective and will only make the car heavier.
There are mainly two companies doing what English call cheater cars on a Kyosho base.
Rudebits, England-based, makes the DB1 and DB2.

Redworkshop, France-based, maker of the Stonem, B5M Low Rider...

The car on the pic is a Stonem 615 (RB6 front, ZX5 rear, 2015 version).
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