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Zenoah G20 EI vs G20 ZP

Old 03-06-2013, 03:26 PM
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lstimey
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Default Zenoah G20 EI vs G20 ZP

Guys
I have been considering a G20 for my Goldberg Jungmann which to me is borderline for power. Regardless can someone tell me how the G20ei specs show 1.7 hp at 8500 rpm and the G20 ZP specs shows 2.1hp at 9000 rpm? As far as I know the only difference in the motors is the ignition brands. Seems like a big difference ! I am trying to stay away from the Alphabet motors or anything I can from there.
Lee
Old 03-06-2013, 05:01 PM
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geeter
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Default RE: Zenoah G20 EI vs G20 ZP

hi, i'm not firmiliar with the jugmann but have a g-20 ei. this has the older style ign. it uses power like crazy. a 2300 mah 4,8 volt pack lasts three 10 minute flights. once the nimh battery is down past 5.25 volts the motor won't fire. for the energy it uses it should make 6 hp. LOL. the newer z engine uses a lot less and can run on li-po power also. i can't see any power adder in that. unless they changed something. i have my g-20 in a aeroworks 60-90 size extra 260. it flies very good. almost unlimited verticle with a 15x6 xoar at 8800 on the tach. very nice motor. this summer i will put on a rc- xcell ign and do away with the stock. call horizon hobby and maybe they answer any questions............good luck...............RON
Old 03-06-2013, 05:31 PM
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AJsToyz
 
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Default RE: Zenoah G20 EI vs G20 ZP

The only other change is the muffler, not sure if it would change things much.
Old 03-06-2013, 06:26 PM
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lstimey
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Default RE: Zenoah G20 EI vs G20 ZP

Yeah it is a common issue with battery draw. I just don't see how there could be such a HP difference between the two. I hate to say it but i am thinking they are fudging the numbers to keep up with the ABC's. Zenoahs are an excellent product, I have a G26EI that runs like a top. I wan't to use the hp numbers to help me make the right power source for my Jungmann. I thinks a DLE 20 would be right but I refuse to go that way. Maybe a OS 22 , $$$$
>Lee
Old 03-06-2013, 08:33 PM
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karolh
 
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Default RE: Zenoah G20 EI vs G20 ZP

If you can keep the weight of your model to 10 lbs or less then the G20 will be a good choice, but anything over say 11 lbs is really pushing it and will only provide little more than scale like flying. My GP Big Stik 60/ G20 with an RC exl ignition weighs approx. 9 lbs. and is a great performing combination.

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