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pusher gyro's

Old 02-20-2011, 04:29 PM
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Default pusher gyro's

Hey Folks.

I am building a pusher (bensen style) gyrocopter with a 40 size engine. My question is,I know that pull type aircraft, both gyro's and fixed wing requirs a 2-4 degree down thrust . But what does a pusher engine need for a thrust angle..? Thanks Terry
Old 02-21-2011, 03:29 AM
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Default RE: pusher gyro's

Terry,
I have built an RPG Pusher(electric) and it does need down thrust also. It looks like upthrust from the rear. Look up the RPG on RC Groups.

Jim
Old 04-19-2011, 04:07 PM
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Default RE: pusher gyro's

Specific to a Bensen Gyrocopter the mast has a 9 degree tilt to the rear. After the machine is built it needs to be hung tested from the rotorhead and with a 50 % load of fuel the mast should have a tilt of between 2 and 6 degrees to be properly balanced for flight.
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Old 04-20-2011, 05:01 AM
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Default RE: pusher gyro's


ORIGINAL: rcflyerfl

Terry,
I have built an RPG Pusher(electric) and it does need down thrust also. It looks like upthrust from the rear. Look up the RPG on RC Groups.

Jim

Jim,
If you have had to add down thrust there is something out of square somewhere, I know of no other RPG that has had this done. It is never a good idea to do this due to the power variations involved which can cause pitch problems.


Rich
Old 04-21-2011, 06:21 AM
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Default RE: pusher gyro's

Rich,
You are right and I am WRONG... I was just looking at it wrong.

Slap my hands.
Jim

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