🚀 go-pugleaf

My 2p worth...

When trying to decide what to power planes with I use 2 basic rules.

1. If it's an aerobatic scale model like a Pitts or the Ultimate work out
the hp/pound weight of the original, weigh your model and work out the 
required power. Planes like the pitts and ultimate are pretty small, yet 
have 200+++ hp on tap. It's actually pretty difficult to get the same
power to weight ratio in a model Pitts as the full size has so you're
generally looking at a pretty big engine.

Sure a 60 will fly an Ultimate,but it will be sadly lacking in the verticals.
i like my aerobatic planes to emulate the performance of the original, not 
just look like them


2.  Stick in the biggest engine that will fit, without totally blowing the 
wing loading. The left hand stick on the transmitter works the throttle and if 
you pull it backwards it will reduce the engine power. On the other hand you,
you have elevator and ailerons, no seriously you can't get more power out 
of a small engine that's already at full throttle...

A larger engine running at say half throttle will run quieter, use less fuel
and last longer than a small one running flat out all the time....

Anyway as regards the Ultimate, I have a 120 surpass, in mine, it weighs
around 8.5 lbs all up and it still won't do as many vertical rolls from 
take off as the real one is capable of... but it will do knife edge loops.


cheers
-- 
bob

Harrier Softnet Ltd    tel +44-734-731181              I'd rather be playing
Ivanhoe Rd             fax +44-734-734546              with my chopper
Finchampstead          email bob@harrier.demon.co.uk     O  / __________
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