Thread: Discussion Hobby King Ryan STA EPO
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Old Jan 25, 2013, 04:28 PM
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Foam is where the heart is
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Australia, NSW, Sydney
Joined Aug 2010
2,335 Posts
The 9x3.8 SF was a bit of an improvement but not enough to float my boat.

The problem is the motor. It ain't up to the job, so why persist with a 4 banger when you can shoehorn in V8.

In this case the V8 is a Turnigy 1320kv Park480. I had one kicking around from an earlier project and liked the way it performed with a 9x6 prop.

The problem was cramming its large diameter in to the narrow nose of the Ryan.

Solution was to mount it a little lower and perform some foam surgery on the cowl.

An X mount was fabbed from aluminium and screwed to the existed firewall (with previously installed backup ply).

Cg is now at 42mm with the battery furthest forward.

Prop is a 9x6 apc with a spinner from my T28 fun fighter.

Draws about 27A static so the original speedie should be ok.
Thrust, 900g on a half charged battery.
Should be enough
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Last edited by brett.c; Jan 26, 2013 at 01:10 AM.
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