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Author Topic: TM250 1975  (Read 5046 times)

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Offline Tim754

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TM250 1975
« on: January 13, 2009, 01:07:22 pm »
Likely opening a can of scalded worms here.. but , how is the 75 TM250 so radically different from the 74 one, as to stop it being taken as a "follow on type" model. I honestly have missed the discussion. Please just the facts as I will except them. Tim754
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Offline Marc.com

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Re: TM250 1975
« Reply #1 on: January 13, 2009, 01:14:22 pm »
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Offline Tim754

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Re: TM250 1975
« Reply #2 on: January 13, 2009, 01:16:47 pm »
That's what I was studying.. Please continue.
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Offline Freakshow

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Re: TM250 1975
« Reply #3 on: January 13, 2009, 02:19:18 pm »
Rear swing arm, thats it.  parently its differant width and shock pos by a few mm,

from what i can tell, got both here, but only look differant if you squint. 
I have put it down to just one of those things, if you can get it changed, i got a few 75 here i could flood the market with and get a few more folks on the track racing.  ultimately its not a Rm, but then again its a 75 model and them the rules, ( AKA the MX250B etc)
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For sale -  PRE 75 Yamaha MX stuff, frame, motors and parts also some YAM DT1,2,A and Suzi TS bikes and stuff

Maico31

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Re: TM250 1975
« Reply #4 on: January 13, 2009, 02:26:11 pm »
The shocks are moved on the swingarm and also the top mount on the frame giving them more rear wheel travel than the '74 model.
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Offline Marc.com

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Re: TM250 1975
« Reply #5 on: January 13, 2009, 03:02:03 pm »
Just ride it anyway, whats a few mms between friends.  ;
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Offline Freakshow

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Re: TM250 1975
« Reply #6 on: January 13, 2009, 04:26:09 pm »
YEs you would think if you limited the travel to 4 1/2 inch shock there wouldnt be a problem, but the rules are there.
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74 Yamaha YZ's - 75 Yamaha YZ's
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70  Jawa 2 valve speedway's

For sale -  PRE 75 Yamaha MX stuff, frame, motors and parts also some YAM DT1,2,A and Suzi TS bikes and stuff

Offline Marc.com

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Re: TM250 1975
« Reply #7 on: January 13, 2009, 04:39:42 pm »
I think it is in the spirit of the event to restamp the frame  ;D
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Offline JC

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Re: TM250 1975
« Reply #8 on: January 13, 2009, 05:54:18 pm »
Gear ratios are also slightly different.
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Doc

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Re: TM250 1975
« Reply #9 on: January 13, 2009, 06:48:44 pm »
Contentious to say the least. It should be a flow on and so should an MX250B. Does seem very silly with these '75 models (and some '76) still out there but not ridden at all due to being placed within the wrong era :-\ in my eyes a TM is a TM is a TM no matter how I look at it or what year model designation it carries. A '75 model is not going to put a cat among the pidgeons but mearily add to the numbers as Freaky says.       
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Offline Freakshow

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Re: TM250 1975
« Reply #10 on: January 13, 2009, 08:18:21 pm »
Our in our case DOC just adding more pigeons, right
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For sale -  PRE 75 Yamaha MX stuff, frame, motors and parts also some YAM DT1,2,A and Suzi TS bikes and stuff

oldfart

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Re: TM250 1975
« Reply #11 on: January 13, 2009, 09:03:04 pm »
Are you blokes trying to  wind me up again, as this has been discussed at great length on another post 
The out come is .... It's a 75 model and thats it
Rear swing arm shock mount is moved up arm , swing arm beefed up also . Top shock mount moved forward
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Offline VMX247

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Re: TM250 1975
« Reply #12 on: January 13, 2009, 09:25:47 pm »
Are we being Nice in 09 Mr Wasp,ya gotta a sting happening  8)
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Offline Marc.com

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Re: TM250 1975
« Reply #13 on: January 13, 2009, 09:28:54 pm »
Quote from: Doc on January 13, 2009, 06:48:44 pm
A '75 model is not going to put a cat among the pigeons but merely add to the numbers as Freaky says.       

too true, numbers are everything, not like there is a HUGE technical advantage, no more than changing to aftermarket swing arm and shocks gives you.
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YSS

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Re: TM250 1975
« Reply #14 on: January 13, 2009, 09:35:59 pm »
If you realy want to race it , race it in the right class . Unless winning is everything to you . Then you just bought the wrong bike , simple is it ?
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