Dearly departed member Art Sesselburg and his Odd Job Motors website had quite a write-up on chasing down info in Russia, for his Whirlwind. While he is gone, his writings live on. Maybe they would be of some help. Still, I would definitely try a Scott part, first. The trouble I found with the Whrilwind was that while they blatantly copied a lot of things, the material quality was poor. That motor has virtually no time on it; so my guess is that the part was of inferior quality. If you can get a Scott part to fit, it’s very likely that it will be a lot better.
Too bad Putin apparently never owned a Whirlwind. If he did, the original engineering staff would be pushing up daisies by now.
Long live American manufacturing!
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