My '74 YZ125A monoshock

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10/15/2013 6:02 PM

My dad replicated this off the geometry of the the 250, scaled down to 125 frame and my weight. Noguchi motor.

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10/15/2013 6:26 PM

Pure genius

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10/16/2013 6:29 AM

That's a lot of work!
Looks like he got 6+ inches of travel, wow!
Did he use a 250 swingarm?
What did he use for a shock?

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10/16/2013 7:29 AM

It had a standard 125 swing arm that was fitted into a jig that had the scaled down YZ250 specs. Then the "mono" part was built. We used a standard YZ250 shock with the spring rate ground down to my light weight.

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10/16/2013 3:08 PM

Here it is unmasked.

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10/18/2013 7:34 PM

That is very cool

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11/20/2013 3:16 PM

Any chance you have more pictures for us to drool over.

You had a home made Works bike back when there were real sweet Works bikes.

Richard

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11/20/2013 7:33 PM
Edited Date/Time: 11/20/2013 7:34 PM

Yes I lots of pics. My favorite is one is with the whole frame put together as a frame only. I even found one 8mm film of me at Rio Bravo on it.

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11/21/2013 5:15 AM

Fantastic. When you have the time, could you please post more pictures?

Richard

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11/21/2013 6:01 AM

Richard, was that you that ended up with my old 75 YZ125 off ebay about twelve or so years ago??

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11/21/2013 10:49 AM

Thank you Joe for even pretending that I have enough working brain cells to remember that far back. LOL. Too funny. I have had so many bikes pass through my hands that I do not even try to remember what I had or who I got it from.....as I would most likely be wrong. If I do not have this info written down, I just cannot remember.

I have had two 1975 YZ 125b's over the years. I know we have bought from each other over the years....but, I will stop right there, as to say either way would be me just making up my own version of history. I will look through some notes to see if it was indeed me that bought your bike.

I have also owned a handful of 1974 YZ 125a's. I have kept one to finally put together. It has a 1974 MX 175 cylinder with a Webco head, 1974 YZ 250 forks, DNR top triple clamp, Noguchi painted tank. I was going with a Redline swingarm, but I sold that when I had another bright idea to go with a custom design to mimic a late model long travel twin shock "Works" bike I had seen on some web site. It seems if I do not get to a project in a timely manner, I tend to change the concept a few times.

Richard

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11/21/2013 11:33 AM

Two old guys with "can't remember shit CRS syndrome discussing a bike they may have owned...laughing

White Euro paint scheme 75 YZ125 with 76 "C" cylinder, FMF porky head, ACE Racing cone pipe, Works Performance shocks. May have sold the aftermarket box section chromoly swingarm (kinda crusty looking) and a 74 YZ250 front end (upper tubes needed rechrome) with it.

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11/21/2013 3:27 PM

I bought my YZ125a from Joe P. from New Jersey a few years ago. He had a 1975 YZ125b for sale that fits that description.

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11/21/2013 4:43 PM

Your Dad pulled off a super clean build. Did you guys buy a new shock from Yamaha? That had to cost half of what a yz250 was back then. eBay has opened up a new world to us of piecing projects together. It's hard to imagine not having eBay or Craigslist to buy junk from. You must have had everyone in the pit checking your mono shock 125 out

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11/21/2013 6:28 PM
Edited Date/Time: 11/21/2013 6:33 PM

Yamaha and Noguchi were sending us product direct. Yam asked us to test the mono for the next year. Wait until I post about the YZ60 we made in '74 and the YZ175 in '76. Talking about exotic. If you'll notice, Noguchi top end and Jemco down pipe made to Noguchi specs.

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11/24/2013 4:03 PM

Humyam1u, will you be posting more pictures?

Richard

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