Kosman Widened Rim - MFG Process - Road Star Warrior Forum : Yamaha Star Warrior Forums

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Old 01-09-2020, 09:07 PM   #1 (permalink)
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Exclamation Kosman Widened Rim - MFG Process

Early Photos I came across while cloning my old laptop drive
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Machinist Lathe used to remove stock Bead (Skirt).
Rim is machined with a Step that Mates with the Donor Rim Step.



Stock Rim machined with Steps that Mate with the Donor Rims.



Donor Rims Press-Fit to Stock Rim and Tack Welded prior to Finish Welding.
The Tack Welded Part is Checked for Run-Out on Machinist Lathe.



Donor Rims Tig Welded to Stock Rim on Inside & Outside of Wheel.



Widened Weld-Up Wheel.



Comparison of Sock & Widened Weld-Up Wheel.



Finished Widened Painted Wheel being checked for Run-Out.


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Kosman square edge 240 Weld-Up rear wheel - 18 x 8.5 inch << Additional Photos Here!



Stock Rear 3-Spoke Warrior Wheel


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Last edited by alanh; 01-10-2020 at 12:16 AM.
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Old 01-09-2020, 09:19 PM   #2 (permalink)
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Great pictures
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Old 01-09-2020, 09:23 PM   #3 (permalink)
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Yes!!
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Old 01-10-2020, 05:16 AM   #4 (permalink)
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Pretty cool. I kinda wondered how it was done. I had an idea and that's what I thought. But seeing the pics puts things in place better.

Thanks Alan.
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Old 01-10-2020, 11:18 AM   #5 (permalink)
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great pictures. I think Kyle NV our own site vendor uses the same process
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Old 01-10-2020, 11:26 AM   #6 (permalink)
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Yes great pics and it takes a great amount of care welding the rims as to not give it too much heat so as not to warp or twist the rim. Then the runout to make sure it will balance correctly. Alot of work goes into them.
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Old 01-10-2020, 12:20 PM   #7 (permalink)
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This is on my list for next year over the winter off season and I've been curious about what the process entails! I have zero welding and metal fab experience so mad respect to those that do! Thanks for sharing
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