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Hot rodding a Zenoah GT80??

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Old 04-07-2011, 01:37 PM
  #26
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Default RE: Hot rodding a Zenoah GT80??

He thinks (?) that it will be too heavy to do rolling harriers and to hover. Cause that's what you do with airplanes.
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Old 04-07-2011, 02:25 PM
  #27
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Default RE: Hot rodding a Zenoah GT80??

That's what you do TO airplanes.
Warbirds are meant to fly! Not just stay aloft.
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Old 04-11-2011, 01:19 PM
  #28
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Default RE: Hot rodding a Zenoah GT80??

I had no idea it was for a war-bird. When H9 came out with my 33% Cap, they were pushing the GT-80. I put a BME 102 in the airplane that was 3lbs lighter and 20% more powerful. The BME has a bare weight of 4.0lbs. Plane balanced fine, infact to get it to fly the way I wanted it still needed a little tail weight.
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Old 04-11-2011, 01:48 PM
  #29
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Default RE: Hot rodding a Zenoah GT80??

Quote:
not looking for 3D performance, but it's powering a 33 lb warbird that only has ground clearance for a 23" prop.
plane at best does a loop with no umph at the top



See post # 12

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Old 04-11-2011, 02:40 PM
  #30
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Default RE: Hot rodding a Zenoah GT80??


Quote:
ORIGINAL: AraTidwell

I had no idea it was for a war-bird.
Five minutes of reading would have prevented that.
Quote:
When H9 came out with my 33% Cap, they were pushing the GT-80. I put a BME 102 in the airplane that was 3lbs lighter and 20% more powerful. The BME has a bare weight of 4.0lbs. Plane balanced fine, infact to get it to fly the way I wanted it still needed a little tail weight.
Warbirds and 3D planes are two different animals. Warbirds typically require a lot of weight up front.
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Old 04-11-2011, 05:26 PM
  #31
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Default RE: Hot rodding a Zenoah GT80??

What exhaust do you have on your GT80. The factory cans are quite but cost 700-1000 rpm depending on prop.
Most hot rod tricks will add HP but will require more RPM, reduce power at the lower end and will have a narrower power band.
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Old 04-11-2011, 05:33 PM
  #32
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Default RE: Hot rodding a Zenoah GT80??


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ORIGINAL: tkg

What exhaust do you have on your GT80. The factory cans are quite but cost 700-1000 rpm depending on prop.
Most hot rod tricks will add HP but will require more RPM, reduce power at the lower end and will have a narrower power band.
It's got the factory exhaust on it.Was looking at Toni's 2 into one exhaust but don't know if the gain will be noticeable for my style flying.
I tend to fly at half throttle most of the time and will go full throttle on a straightaway every once in a while.
I would like to have a decent top end for some speed but want to make sure it has enough power to muscle it out of any dicey situations I might get into.

This Terry?
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Old 04-11-2011, 05:50 PM
  #33
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Default RE: Hot rodding a Zenoah GT80??

What prop is being used?
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Old 04-11-2011, 08:41 PM
  #34
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Default RE: Hot rodding a Zenoah GT80??

Quote:
ORIGINAL: sodbuster 1
It's got the factory exhaust on it.Was looking at Toni's 2 into one exhaust but don't know if the gain will be noticeable for my style flying.
I tend to fly at half throttle most of the time and will go full throttle on a straightaway every once in a while.
I would like to have a decent top end for some speed but want to make sure it has enough power to muscle it out of any dicey situations I might get into.

This Terry?
OK cheap trick #1 Get the biggest drill you can fit into the muffler port and drill some holes in the baffle. If you enjoy the extra power then look at aftermarket mufflers.
I think that J&A Engineering makes mufflers for the GT 80. Way back when the Zenoah first came out Joe had a set of HP mufflers, a little noisy, but they actually showed a power increase over open exhaust (some tuning was happening)
Yes its Terry, cant stay away
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