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HelicopterJR Heli Vibe 90/50, Sylphide 90, GSR260 › Vibe 50 main gear measurement
08-02-2013 08:20 PM  4 years agoPost 1
Sirolf

rrNovice

Baarlo, Netherlands

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He guys.

I don't have a Vibe myself but a RJX 50.
These both use a lot of the same parts including the main gear,
but 85T instead of 87T.

Is there some one that can give me the outside diametre in mm
of the JR 87T main gear so if it indeed will fit?

Min is:

Thanks guys

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08-02-2013 09:35 PM  4 years agoPost 2
mdu6

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Montreal

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I don't have one on hand ... but if you look at these pictures it seems close to 89mm or 88mm

http://www.scalehobby.co.kr/UploadF...90N-400-26K.jpg

http://www.scalehobby.co.kr/UploadF...90K-400-29K.jpg

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08-03-2013 08:55 PM  4 years agoPost 3
DannyvG

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Netherlands

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If the modulus and slant angle is the same you can simply calculate it yourself.

87.38/85*87=89.43

This is because the circumference of a circle is pi*d and Modulus*pi*Number_teeth=circumference

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HelicopterJR Heli Vibe 90/50, Sylphide 90, GSR260 › Vibe 50 main gear measurement
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