Can anyone advise me ? I am building a CT03 and can't decide wether to go with twin Quickdraw 25HT's or twin Bonzi BZ-4 mod zens. from reading up both seen to have their advantages. I have worked out the cost and their does not seem to be much difference ( about $250 more for the quickdraws ) Bonzi bz-4's are $725 for the std and $885 for the counter rotation + pipes and stingers. and the Quickdraws are $795 including the pipe and stinger + $398 for the MHZ counter rotation clutch. I would be very graitfull for any advise as i want to make the right desision.

consider also the spare parts availability and cost in ur place..i prefer an engine with lots of available parts...

I am also collecting parts for a CT03 build and contemplating the same powerplant questions. I guy a couple of guys I run with here LOVE the QD25Ht for may good reasons but I think that two may be out of my tuning skills!

On the other hand, I have looked into the newer RCMK 254 and that seems like a tremendous value for a 26cc-based motor producing a claimed 4.5-5hp box-stock. It is a 4-bearing case and they will be offering both regular rotation and a counter rotation. They also offer both in a rear-exhaust setup that seemsd to work well for guys across the pond...although i want a pull-starter and not a nitro-starter on the rear exhausts...?

e-mail me if you are curious...