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11-11-2016 11:06 AM  12 months agoPost 1
Gazza

rrNovice

Australia

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Hi I have the Hirobo bell 47 with the HGE-20 EH engine But EI failed , was given Zenoah EI but cant for the Life of me get the right timing for it to run Nicely , anybody got any ideas ...?

Gazza .....

Melbourne Victoria

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11-11-2016 08:41 PM  12 months agoPost 2
Santiago P

rrProfessor

South West, Ohio

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I am not following entirely, did you replace engines or just the electronic ignitions?

If EI ,Check this webpage out:
http://www.rcextremepower.net/timing.html

Whenever I had to start from scratch on an engine conversion I normally figure out the magnet placement to spark to match top-dead-center and retard about 5 degrees. Then begin test runs advancing the spark (magnet placement) about 2 degrees at the time until I get the smoothest behavior of the engine.

BTW, I used CH ignitions.

Good luck

Santiago

disclaimer: I am no gasser expert, just get lucky often

Team Minicopter - PeakAircraft.com
bavarianDEMON- Team Kontronik - Scorpion Motors-

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11-12-2016 01:28 AM  12 months agoPost 3
Gazza

rrNovice

Australia

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The Electronic ignition module is what I'm talking about , the engine is the early tanaka 20cc that Hirobo first used in the bell 47..what I did was changed the original failed EI with A Zenoah one and because that engine has a swing arm to advance the ignition worked by the throttle linkage , I fitted a ball link rod to the arm so this wont move as the module has auto advance ....

Gazza...

Melbourne Victoria

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