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From: <theeyesnose@gmail.com>
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Subject: Review received by HyperFlight
Date: Sat, 20 Jun 2026 12:14:40 +0100
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Review Type    : Review
Product Code   : GDM1520B
Review Title   : Ordered to replace a broken pinion gear
Product Rating : 3 stars
Reviewer Name  : Paul Eisner
Reviewer Email : theeyesnose@gmail.com
Review Text    :
I was using one of these in gps light class pk2pro. Teeth on pinion gear shredded after about 15 launches on 3S and 16x8 GM prop. Used in combination with summit 60 hv bec. Believe damage caused by too harsh brake setting. Have reset brake to 50% with 2.5 sec motor ramp. Worth continuing as combination is much cheaper than the alternative inline combination. The gearbox is repairable with parts I ordered from Tenshock . Hyperflight should consider ordering gearbox spares and pinion pullers which are available from the factory.Replacement arrived quickly as usual with Neil's excellent service.