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Author Topic: RM80N/T and DS80 motor?  (Read 1949 times)

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Offline Nathan S

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RM80N/T and DS80 motor?
« on: May 29, 2015, 09:40:01 pm »
Talking twin shock DS here:

Will the DS motor bolt into the RM frame?
Will the RM intake and exhaust bolt up to the DS motor?
Is the DS gearbox wider ratio?
Anything else?
« Last Edit: May 29, 2015, 09:43:20 pm by Nathan S »
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Offline JAP 454

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Re: RM80N/T and DS80 motor?
« Reply #1 on: May 30, 2015, 08:10:20 am »
Nathan, I did just that in reverse recently, well, sort of !! Early twin shock RM 80 motor into a mono DS 80 roller, everything bolted right up, RM intake manifold is larger.
Foss
« Last Edit: May 30, 2015, 11:18:35 am by JAP 454 »
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Offline Nathan S

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Re: RM80N/T and DS80 motor?
« Reply #2 on: May 30, 2015, 11:47:36 am »
Excellent news, thanks Foss. :)
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Offline LWC82PE

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Re: RM80N/T and DS80 motor?
« Reply #3 on: May 30, 2015, 05:00:04 pm »
RM 80 NT

1- 36/14
2 - 34/18
3 - 30/20
4 - 25/20
5 - 26/24
6 - 25/26
Final reduction - ratio 3.425:1 - 14/50

Cylmer DS manual does not have DS gear ratios so will have to look them up on Alpha_Sports


78 DS80C

1 - 36/?
2 - 32/19
3 - 29/22
4 - 26/24
5 - 24/26

Final - 14/?

Thats all i could come up with looking at parts book.  Not sure if these are exact years you are comparing but there is gearbox difference between 78 and 80. 5 v 6 speed.
« Last Edit: May 30, 2015, 05:19:27 pm by LWC82PE »
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Offline Doc

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Re: RM80N/T and DS80 motor?
« Reply #4 on: May 30, 2015, 05:27:43 pm »
DS80's RM80B RM50N/T all use the same 5sp tranny  ;)
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