OzVMX Forum
Clubroom => General Discussion => Topic started by: oldyzman on November 04, 2010, 02:02:58 pm
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Gday Lads,
Just curious...
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My 10 cents worth ::)
The YZ 125A is a sort after bike as apart from the cool asethetics is is a genuine pre 75 125 class contender (when set up correctly )
The RM 125M and S models are reasonably sort after due to them being the origial RM model of any capacity .
An RM 125S set up correctly is a genuine pre 78 125 contender .
Both models are limited by a 5 speed box.
The YZ is a reasonably rare bike but there is almost certinaly at least one on ebay all the time.
The RM 125 M is a fairly rare bike particlary outside the US (and not a lot come up over there )
The RM 125 S is a fairly common bike in Australasia but seem to be scarce in the rest of the world (strange as i remember there were many in the UK )
Both great bikes imho however they are chalk and cheese as far as racers go , personally if i could only own one it would be the cheese :)
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All that cheese will make you fat, Bill. ;)
Seriously, that's a pretty good summation. I guess the main thing I'd add is that pre-75 bikes always carry a bit of a premium/are more desirable compared to equvilant pre-78 bikes.
Eg: If the question was YZ125A vs YZ125C/X then there's no doubt that the A is more sought after, despite the later bikes being the better bikes to ride (and despite the later bikes' value being jacked up a bit by the value of their fuel tanks...).
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Likes Nathans comment
All that cheese will make you fat, Bill. ;)
Seriously, that's a pretty good summation. I guess the main thing I'd add is that pre-75 bikes always carry a bit of a premium/are more desirable compared to equvilant pre-78 bikes.
Eg: If the question was YZ125A vs YZ125C/X then there's no doubt that the A is more sought after, despite the later bikes being the better bikes to ride (and despite the later bikes' value being jacked up a bit by the value of their fuel tanks...).
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Nathan its true there is a fair bit of cheese in my hut :)
But you should know you cant fatten thoroughbreds ;D
Or dump rats ;D
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A RM S would be about the only Suzuki I would buy that or a 75 RH that looks like the S.
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Yes the S is the works bike you have when you don't have a works bike.
I can remember when my brother Brian pick his up new from Mayfairs Suzuki in Brisbane, what a great looking bike it was.
I have all Honda's but would and will buy one when I find a good one.
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Shane i think Dodgee has a nice one for sale :)
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Don`t forget MX125A, IS AS GOOD AS THE YZ125A, In 1975 l was sponored on a Rm 125 S, great bike and quite fast a little bit more peaky than the honda, l like it but when l had the opportunity l would jump back onto my CR125M, 1973 MODEL, l liked it better. l also raced a 125 mxA, and there is not a lot between this model and the yz125A, only the Tank. At haywood back in 1973 myself on a MXA and Clyde Tucker on a YZA, at the end of the 5 lapper at the finish line he won by a half a wheel, and the only reason he won, l missed a gear and struck neutral. An mx 125a sorted out is as good as a yz125 A.
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I would think the RM125S is more collectible, like Bill said there is nearly always a YZ125A for sale on ebay or Marks swapmeet.
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I think there pretty close but I would just favor the YZ. The YZed is worth more money. They are both pretty bikes. Is'nt it great where finally taking about vintage bikes again. 8)
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Don`t forget MX125A, IS AS GOOD AS THE YZ125A,
No it isn't.
There's not a huge difference, but the YZ is definitely the better bike.
More power, closer ratio gearbox, CDI, and a bit less weight (no autolube, alloy rims, alloy tank).
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dont care too fat to ride either :'(
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Port the barrel on a mx the same as a yz, there would be no differents, read the test shoot out on both bikes, they favoured the little mx.
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Is'nt it great where finally taking about vintage bikes again. 8)
You're dead right there Davey.. but how long will it last??
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Port the barrel on a mx the same as a yz, there would be no differents, read the test shoot out on both bikes, they favoured the little mx.
I'd rate the YZ's internal rotor ignition as the main point of difference - its definitely got better throttle response and the non-dead-straight ignition curve has to be part of the performance difference.
My YZ-A has an MX top end on it, and it is noticably faster than a stock MX-A.
Its academic if you're building a 2010 style VMX race bike because you can easily build a DT125A that blows the doors off a stock YZ125A, but there's more differences between a YZ-A and an MX-A than the tank. And for the purpose of this topic, there's zero doubt that the yZ125 is vast more desirable than the MX125A reardless of their similarities.
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I had a mate who had a 125 M or S- not sure but think it was the S. The following year I got the RM125 A- biggest difference I remember was the Reed Valve on the A. They were both great bikes; although I never got to ride a YZ 125; but the A was easier to ride thanks to the Reed Valve- and the up- pipe was a plus. IMO it was a great period for Suzuki. A,B,C, models etc.Some of the best pre-78 bikes and a good Evo bike with some fettleing.
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I had a mate who had a 125 M or S- not sure but think it was the S. The following year I got the RM125 A- biggest difference I remember was the Reed Valve on the A. They were both great bikes; although I never got to ride a YZ 125; but the A was easier to ride thanks to the Reed Valve- and the up- pipe was a plus. IMO it was a great period for Suzuki. A,B,C, models etc.Some of the best pre-78 bikes and a good Evo bike with some fettleing.
You're right there 27 it was a great period for Suzuki. I had a RM125a and RM125b and they were fantastic bikes especially the B. I remember the S being a lot peakier to ride, particularly with the 5 speed.
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I think the RM125S had a reed valve to the crank as well as the piston port??? Then the rm125A made a better job of it.
Brett
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The RM125S was a piston port just like the TM125 and the RM'A model had crankcase reed induction.. not a full reed valve.
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Interesting YZ vs MX test....
http://vintagemx.com.au/?p=499
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to state the obvious,
RM125S is pre~78
YZ125A is pre~75
i like em both but i'd reckon the RMs would be more of a collector thing. they just look super funky with thier RH styling and downpipe.
{i'd have an MX125A over a YZ125A anyday.
oh! hang on a tick, i do have one ;D
i prefer the yellow MX colour scheme over the YZ's silver.
and who races a stock Yamaha anyway?}
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I know what yuor saying re the MX being a good thing, but there is something about a Aluminium tank even if its not any lighter..
Brett