OzVMX Forum

Marque Remarks => Suzuki => Topic started by: Mark Austin on November 22, 2010, 08:51:46 pm

Title: RM125S 1975 Resto
Post by: Mark Austin on November 22, 2010, 08:51:46 pm: Hi lads,

I've just acquired a very well worn 1975 Suzuki RM125S in pieces with a reconditioned motor.
I plan on getting it race ready, so I'll need some advice from the Suzuki experts...
First off, where do I get a parts manual for this bike and who are some good suppliers.
Also, what is the spares supply like - are they easy to get bits for?

Cheers,
Mark
Title: Re: RM125S 1975 Resto
Post by: oldyzman on November 22, 2010, 09:13:38 pm: Gday Mark,
Where are you located. What do you require? If you do have a fuel tank ,i am curious what it is made of aluminium or steel? I rode my S last weekend among a couple of other old girls. The S is a cool bike. I was actually riding a couple of bikes to see what i will be selling... Think i will keep the S
Cheers Brett
Title: Re: RM125S 1975 Resto
Post by: Tim754 on November 22, 2010, 09:46:57 pm: The genuine parts book is an attachment to the RM125 M S A B book part number 99000-930?? missing numerals maybe 22 sorry they are worn away on cover of my copy.
Title: Re: RM125S 1975 Resto
Post by: Graeme M on November 22, 2010, 10:00:27 pm: Hi Mark, you'll enjoy the little RM once you get it running. They are a fun bike. I haven't bothered getting a parts manual - the Alpha Sports website has all the diagrams and part numbers and it's hugely useful for checking what's common across the TM125, RM125M/S and RM125A. I have found that parts are readily available through Suzuki itself, Suzi Parts in Adelaide, and Vintage Suzuki in the States. And of course eBay. The Vintage Suzuki plastics are good, although a slightly too yellow colour. Original seat shape foams don't seem to be available, but a 125 A/B plastic base and Vintage Suzuki foam/cover works just fine. 1975 RM125s are an easy resto and an easy bike to live with.
Title: Re: RM125S 1975 Resto
Post by: oldyzman on November 22, 2010, 10:25:04 pm: Mark,
try this link its by some dude lukeb..... from the forum, the one you need is the M S A. its been a good helper for me.

http://cid-407d7ef0965d3991.skydrive.live.com/browse.aspx/Racing%20Model/RM%20Owners%20Manuals
Cheers Brett
Title: Re: RM125S 1975 Resto
Post by: Mark Austin on November 22, 2010, 10:47:41 pm: Thanks Brett, Graeme and Tim - thats very useful stuff. In 5 minutes I have a parts manual and a workshop manual - brilliant!

Brett, I'm in Paddington in Sydney. The tank I have is steel and its pretty rusty with a couple of dents. The chrome on the forks is pretty bad as it the exhaust. Any ideas on getting some useable fork legs?

It does look pretty straight forward - maybe this can be a mates bike - ie a useable, cheap bike that others can take for a VMX ride to learn on or just have fun.

Cheers,
Mark
Title: Re: RM125S 1975 Resto
Post by: DR on November 22, 2010, 10:53:54 pm: S parts list at the link below, pages 56-60. Alpha-sport don't list these bits as the US never got the S model and had to purchase optional 'kit parts' which weren't shown in the US parts lists.

http://cid-86267c09a3452a71.office.live.com/browse.aspx/Classic%20Suzuki%20Parts%20Books/RM125%20M%20S%20A%20B%20C%20%20Parts%20List (http://cid-86267c09a3452a71.office.live.com/browse.aspx/Classic%20Suzuki%20Parts%20Books/RM125%20M%20S%20A%20B%20C%20%20Parts%20List)

parts are pretty easy and it should have a steel tank, alloy tank is RM125A/B only ;)
Title: Re: RM125S 1975 Resto
Post by: cyclegod on November 22, 2010, 10:56:20 pm: Some helpful links...

http://www.vintage-suzuki.com/

Someone here has advertised reproduction RM125S pipes
http://www.vintagemx.us/cgi-bin/swapmeet.cgi

http://www.dcvmx.com/

http://www.alpha-sports.com/suzuki_parts.htm
Title: Re: RM125S 1975 Resto
Post by: lukeb1961 on November 22, 2010, 11:00:34 pm: http://cid-407d7ef0965d3991.office.live.com/self.aspx/Racing%20Model/FAQ.txt
Title: Re: RM125S 1975 Resto
Post by: cyclegod on November 22, 2010, 11:21:51 pm: http://cgi.ebay.com.au/suzuki-tm-125-exhaust-/150523465759?pt=AU_Motorcycle_Parts_Accessories&hash=item230be5d01f
Title: Re: RM125S 1975 Resto
Post by: oldyzman on November 23, 2010, 08:45:48 am: How about this gents, my S has an aluminium tank. It is not a 125a tank as thats more of a bubble shape. Go figure...
Brett
Title: Re: RM125S 1975 Resto
Post by: Marc.com on November 23, 2010, 10:38:53 am: Quote from: oldyzman on November 23, 2010, 08:45:48 am
How about this gents, my S has an aluminium tank. It is not a 125a tank as thats more of a bubble shape. Go figure...
Brett

TM125 tank ???
Title: Re: RM125S 1975 Resto
Post by: DR on November 23, 2010, 11:57:56 am: never heard of an alloy tank on an S, a pic would be nice ;) not sure if the early RH250's had alloy tanks? could be I guess, they look similar :-\
Title: Re: RM125S 1975 Resto
Post by: oldyzman on November 23, 2010, 12:55:27 pm: Yes Doc, this bike also has the reed valve feeding into the crank case and its not an A crankcase. I would post a pic but i cannot cause the forum doesn't allow at the moment.. Its neville shepherds old bike, there are old pics on the forum before the race resto.
Cheers Brett
Title: Re: RM125S 1975 Resto
Post by: DR on November 23, 2010, 07:26:21 pm: can you email me a pic? I'm really interested in seeing the bike Brett ;)

gotherat at hotmail dot com
Title: Re: RM125S 1975 Resto
Post by: Mark Austin on November 25, 2010, 11:36:22 am: Hi lads,
Does anyone have a set of forks that will fit this bike? The original forks are badly rusted, and I really don't want to get them rechromed unless I really have to.

Does anyone have a reasonable set of forks that will fit - maybe from a later model?

Cheers,
Mark
Title: Re: RM125S 1975 Resto
Post by: cyclegod on November 25, 2010, 11:40:00 am: There is a complete RM125S (with NOS cylinder) over here in Harvey WA for $1500 ono would you like the number?
Title: Re: RM125S 1975 Resto
Post by: Mark Austin on November 25, 2010, 01:07:36 pm: Thanks mate, but I just need the parts, not another bike.
Cheers,
Mark
Title: Re: RM125S 1975 Resto
Post by: oldyzman on November 25, 2010, 09:37:40 pm: Hey DOC,
I flicked you that email...
Brett
Title: Re: RM125S 1975 Resto
Post by: DR on November 26, 2010, 07:40:47 am: auscobul check your PM's ;)

Brett, got the picture thanks. I'm buggered if I know, it does look extremely like the correct tank but if it's aluminium then you have something extra special indeed ;) I do remember that bike now I see it..least I think I do. Nice KX400 btw 8)
Title: Re: RM125S 1975 Resto
Post by: ola_martin on November 26, 2010, 08:05:11 am: Check out the bike on Dave Miller Concepts website, one of the most beautiful bikes I've seen...
Title: Re: RM125S 1975 Resto
Post by: Mark Austin on November 26, 2010, 08:10:40 am: Hi Martin,
I saw that - it looks brilliant, I think I might do a similar version - if I can find the right coloured plastics.
Cheers,
Mark
Title: Re: RM125S 1975 Resto
Post by: oldyzman on November 26, 2010, 09:49:04 am: That is a nice bike on Dave miller... Not too much Bling. Just good basic claen look with no shit hangin off it.
Beautiful...
Cheers Brett
Title: Re: RM125S 1975 Resto
Post by: Mark Austin on December 04, 2010, 06:49:01 pm: Hi,

Can anyone tell me what the standard chain and sprocket set up is for the RM125S - chain size, and front and rear sprocket size.

Cheers,
Mark
Title: Re: RM125S 1975 Resto
Post by: lukeb1961 on December 04, 2010, 10:15:00 pm: right at the front of the manual, on page 3, it says
DAIDO 428TM, 126 links.
Final reduction 60/14

http://cid-407d7ef0965d3991.office.live.com/self.aspx/Racing%20Model/RM125S/RM125%20M%20S%20A%20Service%20Manual.pdf
Title: Re: RM125S 1975 Resto
Post by: Husabergpete on December 05, 2010, 08:34:42 am: Mark,

I had a look at a M or S 125 the other month. It was in South Western Sydney and was for sale at a reasonable price. Had a later model motor in it so I went with a RM125A instead.

Give me a call on 0407 915 014 and I'll dig up the number for this bloke. Had a perfect original tank, down pipe, usable forks and a couple of other bits. I can help with RM 125 rebuild info to as we have 2 so far and both worked out great

Pete
Wollongong
Title: Re: RM125S 1975 Resto
Post by: cyclegod on December 10, 2010, 02:54:15 pm: Quote from: cyclegod on November 25, 2010, 11:40:00 am
There is a complete RM125S (with NOS cylinder) over here in Harvey WA for $1500 ono would you like the number?

Price has dropped to $1000 ???