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HomeRC & Power✈️Aircraft🚁HelicopterEngines Plugs Mufflers Fuel › motor mount same on different classes?
09-16-2020 01:41 AM  14 days ago
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kenneth8

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USA

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motor mount same on different classes?
On the OS nitro HZ engines.... does anyone know if the bolt pattern width on the .55 class motors and the 91/1.05 class motors are the same? It sounds like folks have switched engine sizes out experimenting around. But didn't know the motor mount width or if folks were changing out motor mounts too Thanks.
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09-16-2020 02:25 AM  14 days ago
KJH

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Interlochen, MI, U.S.A.

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OS .55hz-r has 17.5mm hole spacing on each beam and 44mm width. http://manuals.hobbico.com/osm/55hz-r-manual.pdf

OS .61/.91/1.05 has 25mm hole spacing on each beam and 52mm width.
http://rclife.co.kr/upload/product_...oduct_image.pdf
https://www.os-engines.co.jp/englis...max_105hz_r.pdf
-Kevin
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09-16-2020 02:36 AM  14 days ago
Rojoalfa

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Punta de Mata, Monagas-Venezuela

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/
/

Correct.

Up to 0.5* cubic Inches, that motors are class 50.

More than that, motors are class 60-90

So, you have two different bolt pattern.

/
Saludos cordiales,
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HomeRC & Power✈️Aircraft🚁HelicopterEngines Plugs Mufflers Fuel › motor mount same on different classes?
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