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Author Topic: 83 Yamaha TR1 cafe build  (Read 1722 times)

Offline briandk

  • Posts: 21
Re: 83 Yamaha TR1 cafe build
« Reply #10 on: Nov 19, 2017, 13:59:23 »
Finally managed to get the pin out of the rear shock today. The solution was a few minutes heating it with a gas torch, followed by liberal amount of penetrating oil and more banging on it while disregarding the chance of hitting my own fingers. I also took off the backbone frame today, slowly getting the parts ready blasting and powdercoating. I still need to figure out what I'll do about the engine. I have the spare 81 engine which looks great (picture below), but not sure I want to change to the early type of starter, so still considering cleaning and painting this one.


Offline briandk

  • Posts: 21
Re: 83 Yamaha TR1 cafe build
« Reply #11 on: Dec 11, 2017, 11:02:27 »
Waiting for a tool to remove the bearing races from the steering head, so I can get the frame painted. I seem to be having terrible luck with getting stuff shipped to me at the moment. Either the wrong items arrive or nothing at all.

Anyway, I moved the engine to a little wheeled board so I could push it around without breaking my back. I plugged the intake/exhaust up with silicone plugs and pushed it all out of the garage and gave it a good scrub with degreaser. I found a guy who says he can soda blast it without taking it apart, but so am still on the fence about that.



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Offline briandk

  • Posts: 21
Re: 83 Yamaha TR1 cafe build
« Reply #12 on: Mar 26, 2018, 18:04:27 »
Got the frame parts back from powder coating. Not really very happy with the result as the paint is slightly bumpy on one side and even though I asked them to plug the airbox holes, I got it back filled with sand. Spend hours running the garage's firehose through it, drying and then vacuming the inside of the frame. I guess you get what you pay for.

I started trying to cleanup the engine by having a go at it with aircraft stripper as preparations for painting it, but in the end I swapped it out with my spare engine. It's in a much nicer condition, but unfortunately with the gen 1 style starter (have not seen any other TR1s with that). I guess I can swap the case and starter if it gets a problem.

Got a pair of TM38 flatslides to replace the Hitachi CV carbs, they fit nicely on the engine side and I had a buddy 3D print adapters for the tubes that go to the frame.

I also got the R6 forks mounted using the cognito moto stem, easy and no cutting required. Next is drilling and tapping holes on the lower yoke for steering stops.


« Last Edit: Mar 26, 2018, 18:07:24 by briandk »

Offline briandk

  • Posts: 21
Re: 83 Yamaha TR1 cafe build
« Reply #13 on: Mar 29, 2018, 13:06:27 »
Got the lower frame and swing arm mounted and tested the alignment of my CB750 wheel. With the wheel centered in the swing arm the sprocket is pretty much perfectly aligned and the left side CB spacer seems to be the right size, right side will need about a centimeter turned off.


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Offline briandk

  • Posts: 21
Re: 83 Yamaha TR1 cafe build
« Reply #14 on: Apr 08, 2018, 13:02:58 »
Got the brake side CB750 collar cut down to 27.5mm and the wheel mounted

Edit: oops.. forgot about chain tensioners, will see if they fit or I need to trim the spacers.

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« Last Edit: Apr 08, 2018, 16:10:11 by briandk »

Offline MiniatureNinja

  • Posts: 170
Re: 83 Yamaha TR1 cafe build
« Reply #15 on: Apr 08, 2018, 14:38:14 »
awesome build!
'82 BMW R65LS
'75 Honda CB360 - thread