Re-drives Belt or Chain ?

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rv7charlie

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Nov 17, 2014
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Pocahontas MS
Ford C-6 & later, EO4 (IIRC) are what were used in the RWS reductions for rotary engines. The 2.85 EO4 (I own a couple of 2.85 RWS drives) is, in my opinion, just a bit too wide for the rotary. That's the reason for my interest in the availability of multiple non-reversing ratios that all fit the same housing.

Unfortunately, you can't pick one ratio just because it's a 4-stroke. A Lyc or Cont set up to swing a bigger, slower turning prop for STOL a/c gets a pretty narrow ratio. A Yamaha RX-1 (and derivatives) will need something wider than 2.5. Oh, and HP capability kinda depends more on peak torque than just HP; a 100 HP Harley would abuse a drive more than a 300 HP V8.
 

challenger_II

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Jul 15, 2009
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610
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Fisher County, Tx. USA
A Harley will abuse a re-drive more than a V-8, especially if you have no dampening between the crank and the gear train. I'll let ya'll work this out amongst yourselves.
 
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