ORIGINAL: jrf
Moki 2.10, (otherwise known as Mark 2.10) is $200 cheaper, makes more power and uses less fuel than the Saito 2.20. And the fuel it uses is 0% or 5% nitro at about $9 a gallon.
Powerwise, the Moki/Mark 2.10 will run away and hide from a Saito 2.20.
Jim
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JRF makes a good point - but sometimes you just want to hear a monster "PUTT!". <G>
I'm waiting for the gas version of the Saito 2.20. That should be a hoot. Still, it won't hold a candle to the Moki 2.10 or MVVS 35cc engines (gas or glow).
I have a Zenoah G62 Lite standing by for my Patty. Once the new 2.4 GHz Spektrum SS rig proves itself in my Giant Big Stik with a gasser on the front, I'll move it over to the Patty and load up the G62 Lite from Ralph Cunningham's R/C Ignitions. No worry then about spooking the R/C system with ignition noise. IF the system lives up to its advertising, which I have no doubt that it will.
But, to answer the OP's question in a round-about manner, I would be very surprised if the Saito 2.20 didn't perform perfectly in the Wagstaff Extra.
Ed Cregger