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So I made up a jig from the existing modified frame to be able to replicate the perfect shock position and hold all the pieces in place while being welded back together.
The jig is in place in the frame to be modified and starting the mock up to tack weld pieces back in place.
The upper sub frame and seat mounting position and rear fender mount were raised 1 inch from stock position. To allow for the longer suspension travel in the rear. To achieve this, the upper frame rails were cut off and turned upside down where they attached to the main backbone.
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The new shock position is welded into place with new chromemoly tubing.
Checking the fit of the shocks, and the swing arm before final welding is done.
You are an artist!
not quite art yet, still a little rough. but it will be art when finished.
Test fitting up some more parts to make sure everything fits properly and to locate bracket attachment points to attach the parts before I go any further with anymore welding.
Making all the brackets and tabs to mount the tank, seat pipe and silencer.
Since the complete rear subframe section is moved up, 1 inch from stock, I have to move the lower tabs for the straps to hold down the lower part of the number plate. They also had to be moved up 1 inch.
Impressed with your engineering process, skills and desire to make a bike that reflects the golden era of moto. Wish i still had the mxa mags from the 70s. As a kid i lived by Saddleback and cut school to go ride and watch the pros, bikes were always so cool.
I had a 77 CR125, but at the time my dreambike Maico 250.
I had to make a removable inner fender, bracket to be able to get a air box in and out of the frame.
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Awesome to watch this develop Brian.
Pit Row
Now I know where all the great vintage bike builds went. After COVID and the passing of Newman, The Old School section was never the same. I blamed it on the youth. This is amazing work. I know the build is not there yet, but which methods / sources are used for fenders / number plated that will fit in with the amazing quality of this work.
Thanks for the compliment. Yes the makers know where near there yet. Just stay with the direction this Bike is going.
I will try to source NOS Plastics for it.
Frame is close to being complete. Just need to do the detail work.
Test fitting the rear fender.
So I had to have the rear sprocket custom-made. So I contacted Sprocket Specialties and gave them the dimensions of the Sprocket that I’m wanting to use and they were able to make an exact replica of the original sprocket. The Sprocket they use was huge 61 tooth. Special thanks to Sprocket Specialties. They got the project done in about a week.
Tell me the engine doesn't have a reed valve without telling me the engine doesn't have a reed valve . . . Just kidding, (40 mins. + 2 laps) x 2 was such a great equalizer in some ways and you're doing awesome work to recreate how the Fox crew Made The Platform Work in high-level racing.
Next step will be getting the frame sent out to the sandblaster. Get it back for prime and paint. I will be moving on to refurbishing other parts while the frame is being sandblasted.
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