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Author Topic: Where do I find the AT1,2,3 MX etc Model Number?  (Read 1892 times)

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Offline crossedup2

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Where do I find the AT1,2,3 MX etc Model Number?
« on: September 16, 2008, 10:25:13 pm »
Hi all
Looking for a bit of help.
Where do I find the model numbers for AT1 to 3 series including AT1MX etc?
I think it goes something like this, AT1-0XXXX is an actual AT1.....
AT1-1XXXXX is the AT2 etc....
Where does the AT1MX numbers start (& finish)?

I'm curious about an AT1-444125 as to what it is??????

Thanks
PB
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Anything Yamaha. AT1, CT1 (X3), RT1, DT3 (x3), YZ125X,  YZ250E, YZ400D, IT175E, IT250H, XR500RC . Always looking for Pre 78 Yamaha stuff....

Offline facthunt

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Re: Where do I find the AT1,2,3 MX etc Model Number?
« Reply #1 on: September 16, 2008, 11:55:46 pm »
AT1 Year: 1969 Start Engine#: AT1-100101
AT1B Year: 1970 Start Engine#: AT1-120101
AT1BMX Year: 1970 Start Engine#: AT1-310101
AT1C Year: 1971 Start Engine#: AT1-139101
AT1M Year: 1969 Start Engine#: AT1-300101
AT1MX Year: 1971 Start Engine#: AT1-313101
AT2 Year: 1972 Start Engine#: AT1-165101
AT2M Year: 1972 Start Engine#: AT1-317101
AT3 Year: 1973 Start Engine#: AT1-200101
Dunno how accurate these are, saved from a vintage site somewhere.

From another list:
AT2J from at1-430101
AT3F from at1-440101
AT2E from at1-165101
AT3E from at1-200101
AT2M from at1-318101
ATMX from at1-325101

Hope this helps.




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Offline Nathan S

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Re: Where do I find the AT1,2,3 MX etc Model Number?
« Reply #2 on: September 17, 2008, 11:43:21 am »
Mine's AT1-436xxx
???

I'd been figuring that it was a 70 or 71 model, as it had a piston port barrel, and the recessed "YAMAHA" lettering on the engine.

Any clues?

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Offline crossedup2

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Re: Where do I find the AT1,2,3 MX etc Model Number?
« Reply #3 on: September 19, 2008, 09:56:14 am »
Hi Nathan

The clues all point to an AT2-3

Sunken letters and from the photos a reed valve. Good news is it's the one off evilbay and as it turn out the seller is a very old friend who I haven't seen in years. He had heaps of other AT stuff which he's thrown in. Wheels, electrics, gaskets etc and the the part that you were after, a reasonable exhaust with a good 125 shield!
That's yours if you want it.

DG26 is picking it up today.

Talk to you soon.
PB
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Anything Yamaha. AT1, CT1 (X3), RT1, DT3 (x3), YZ125X,  YZ250E, YZ400D, IT175E, IT250H, XR500RC . Always looking for Pre 78 Yamaha stuff....

Offline vandy010

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Re: Where do I find the AT1,2,3 MX etc Model Number?
« Reply #4 on: September 20, 2008, 12:06:41 am »
so it was you!
i threw a bid on that little baby but wasn't home when the auction closed. bugger! i liked that little bike.
hope it works out for you, they're cool machines!
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Re: Where do I find the AT1,2,3 MX etc Model Number?
« Reply #5 on: September 20, 2008, 12:19:28 am »
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