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Home✈️Aircraft🚁HelicopterAntiques or Out of Business › Old Hirobo Bell 47
12-08-2019 03:20 AM  5 months ago
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Gazza

rrApprentice

Australia

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Old Hirobo Bell 47
Hi guys , I need some serious help here with Electronic ignition on an Old Hirobo version 1 Bell 47 that has the original 20 cc petrol engine in it , at first I had spark at the plug & got engine running then it stopped , no spark at all , got given a zenoah ignition module with hall sensor so did some mods on the swing arm to take a hall sensor and a ball link for adjustment in place of original pick up and cable advance/retard system off the throttle linkage , haven't been able to get any spark at the plug at all no matter what adjustment I do , the old Hirobo version runs on 6v , zenoah runs on 4.8 , just got hold of a new Hirobo ignition module & put all back the way it was originally and still nothing , just wondering if the magnet for the hall sensor maybe to week for the older Hirobo setup ...
Any ideas will be much appreciated....
Oh I did try a zenoah but needed to be re-reengineered....

Gary....

Melbourne Victoria
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04-08-2020 06:45 PM  50 days ago
Helicop50

rrNovice

Australia

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Gazza, one of my old 20cc engines was converted to nitro or without nitro your choice ... it runs smoothly with more power unless you want to keep it gas.
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