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Author Topic: Okmo B02 Loss of Timing  (Read 46 times)

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Okmo B02 Loss of Timing
« on: September 08, 2026, 02:46:01 pm »
A friend just received a new Okmo B02. Unfortunately, the crankshaft timing gear slipped to the side in shipping and disengaged from the crankshaft timing gear, so the timing is now off. My friend says he can't find any timing marks on the gears.

Does anyone have any suggestions on setting the timing gears?
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Re: Okmo B02 Loss of Timing
« Reply #1 on: September 09, 2026, 02:09:04 am »
Bonjour,

Just a suggestion, for all these engines, the spark should fire when the piston is at top dead center.

Perhaps just a few degrees before or after would be useful, sorry, I can't confirm this assertion.

I hope this helps your friend.

https://youtube.com/shorts/4YDPvMnXzUA
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Raphaël, Membre du Modèle Yacht Club de Paris : http://mycparis.fr/
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Re: Okmo B02 Loss of Timing
« Reply #2 on: September 09, 2026, 08:26:13 pm »
Thanks for the suggestion Raphael. Spark at TDC sounds right.

Also, after making the post here I received the following pics from Jin showing the proper timing gear orientation. I was surprised to see there are no timing marks. I think a couple of additional o-rings on the crankshaft would prevent the gear from slipping out of place during shipping.

All the best,

Darryl
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