Hi Salmonbug,

Again, thankyou for your patience, and it seems that the DV kit is winging it's way from Belgium tonight on it's way to me here in Johannesburg care of Fedex! Thankyou sincerely for your help in sourcing one!

In answer to your question re the high altitude in JHB & the choice of an engine, I have lain awake at nights thinking about this factor. The way I see it, I have two choices. I could opt for the new OS 120 2 stroke with which I have had some experience and it is very powerful. Although by not much, it is a heavier engine which will add to the problem of getting the cg correct. The 2nd option is to use the FX-91 but with a tuned pipe like in my 90 size patternship. With a tuned pipe length of 460 mm and swinging a 15X8 APC prop, the engine is actually pushing out slightly more hp than a standard 120 at this altitude. Yes, the longer exhaust does add a few grams but towards the back of the aircraft where we need it.

My 90 patternship weighs nearly 5 kgs and this setup (with the pump mod described earlier) has terrific vertical climb.

Your comments in this regard will be very welcome!

Thanks again & Kind Regards...................Lance