Atul, take a look at what Matt posted on the Syssa engine thread. The weight of their 30cc, with ignition module is less than a YS CDI, a slight bit more than an OS 160, with what appears to be equivilent or slightly better power as compared to an OS 160. This is with a brand new, unbroken in gas engine. We got some very respectable RPM and static thrust numbers this past Saturday. For example, it turns an 17x12 APC at 8200 after warming up (almost 8300 when cool). Static thrust was 19.5 lbs. That's with a pipe of course, and it appears to be well mannered on the pipe too. We got some very good results with a few other props, but I'm not going to write my entire K Factor article on RCU!

This engine has potential. It will take some test flying to see how well it works out for our application. We may discover that it will need some mods for a longer stroke maybe different exhaust timing, but it looks usable for testing right now, as is. Nothing ventured, nothing gained!