Suggestions for a prop size on smaller sized pattern ship.

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Nigel Smith - 25 Sep 2006 19:04 GMT

The model is an Fascination-50 pattern ship. for those who do not know it.
It is vertually a clone of the Venus 40.
I built it for practising the sportsman and standard schedules. Now my Venus
40 whichis fitted with an ASP65 FS seems to be best on a master Prop sized
13 X 6. Any thing smaller and it cuts, but that is no problem because it is
just about right anyway.
My Fascination-50 however has a SC52 two stroke. I started flying it - bear
in mind the engine was new out of the box with a 12 X 6 master prop but as a
bit of curiosity set in I tried an APC 11 X 8. Apart from going like a bat
out of hell I quite seem to like flying with it although the throttle has to
be held back in level flight else it takes on all the airs and graces of a
pylon racer. Now, guys out there. More knowlegeable than me. (Only been back
after and absence of about 20 years) what props would you suggest?

Kind regards and thanks in advance to all replyees (new word?)

Nigel Thomas-Smith

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chris-s@mailcity.com - 26 Sep 2006 14:01 GMT

The 11x8 would probably be a better choice on a couple of accounts...

1) Fourstrokes generally prefer higher-pitched props due to the lower
rpm

2) Pattern ship flying tends to be done at a more constant throttle
setting to keep it smoother, a higher pitch prop helps that

...this is just what I've learnt from folk.

Chris

> The model is an Fascination-50 pattern ship. for those who do not know it.
> It is vertually a clone of the Venus 40.
[quoted text clipped - 13 lines]
>
> Nigel Thomas-Smith

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Model Forum / Radio Controlled / Air Models / September 2006

Suggestions for a prop size on smaller sized pattern ship.