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Author Topic: std. rear sprocket size (no. of teeth) for 1979 rm 125n  (Read 1939 times)

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Offline kitakitsune

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std. rear sprocket size (no. of teeth) for 1979 rm 125n
« on: May 22, 2010, 04:50:21 pm »
G'day guys,
                new to the forum. Currently restoring an rm125n. Clymer manual doesn't seem to list std. sprocket sizes. Bike came with a 61 tooth on it. I'm guessing it should be 59t with 13t front. I want it mainly for dirt track, so any suggestions for gearing would be interesting.
Cheers kitakitsune.
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DR

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Re: std. rear sprocket size (no. of teeth) for 1979 rm 125n
« Reply #1 on: May 22, 2010, 06:04:52 pm »
hi Kit welcome aboard, 59 tooth standard, anything either side of this number is optional ;)
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Offline kitakitsune

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Re: std. rear sprocket size (no. of teeth) for 1979 rm 125n
« Reply #2 on: May 22, 2010, 08:14:15 pm »
Thanks for the heads-up doc. I'll write that on my to-do whiteboard.
Cheers kitakitsune.
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Offline lukeb1961

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Re: std. rear sprocket size (no. of teeth) for 1979 rm 125n
« Reply #3 on: May 25, 2010, 08:28:02 pm »
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DR

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Re: std. rear sprocket size (no. of teeth) for 1979 rm 125n
« Reply #4 on: May 26, 2010, 09:38:02 pm »
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Offline VMX247

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Re: std. rear sprocket size (no. of teeth) for 1979 rm 125n
« Reply #5 on: March 01, 2011, 10:47:01 pm »
Quote from: kitakitsune on May 22, 2010, 04:50:21 pm
G'day guys,
                new to the forum. Currently restoring an rm125n. Clymer manual doesn't seem to list std. sprocket sizes. Bike came with a 61 tooth on it. I'm guessing it should be 59t with 13t front. I want it mainly for dirt track, so any suggestions for gearing would be interesting.
Cheers kitakitsune.

Hi ya kitakitsune..we have been sucked into the pre85 vortex and purchased a RM125 scooter...how is your 125 coming along.
Will we see you at any big OZVMX events this year..??
cheers A @ WA
http://ozvmx.com/community/index.php?topic=14209.75
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Best is in the West !!

Offline kitakitsune

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Re: std. rear sprocket size (no. of teeth) for 1979 rm 125n
« Reply #6 on: March 02, 2011, 10:13:02 pm »
G'day A @ WA,
                     all done, ready for flat track practise day in a couple of weeks.
Replaced EVERYTHING except gearbox, piston, rings, cylinder, cyl. head, engine sidecovers, stator, rotor, wheels, frame, seat and tank. Vortex is the word. Ridden it 3 times so far. Each time you come home and hit the web for more parts. Goes like a rocket, handles quite good as far as I can tell. Last dirt bike was an '82 xr500 - back in '82. Booked in for CD8? or 9? this year. Ultra long way for you guys, but if your'e there - say g'day.
p.s. "parts pit stop.com" were a good source of genuine parts. Postage was reasonable @ $50 for most orders.
Cheers kitakitsune.
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