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Step 3Rear part of frame
Keeping the same sets of forks with each headtube, take the forks that go with the shallowest headtube. Cut off the fork blades and file or grind the crown down to a nice round tube. I'll cut the pink forks in the picture.
This will be welded into the back of your donor bike. Cut a hole in the top tube of your ladies bike about 6-7" forward of the seat tube. I use a hole-saw to cut the hole. The hole can be at 90 degrees to the top tube, this will usually be at a slightly shallower angle than the set tube.
You can cut off any excess tube just beyond this hole.
You then need a handlebar stem and a bit of frame with a seatpost clamp to make the connector for the seatpost. Assemble the bits roughly and check the heights of the bottom bracket and dropouts are similar to the original bike to enable you cut these bits to the right size.
Weld this post connector up, and the steerer tube with the parts in situ as in the last photo in this step.
This will be welded into the back of your donor bike. Cut a hole in the top tube of your ladies bike about 6-7" forward of the seat tube. I use a hole-saw to cut the hole. The hole can be at 90 degrees to the top tube, this will usually be at a slightly shallower angle than the set tube.
You can cut off any excess tube just beyond this hole.
You then need a handlebar stem and a bit of frame with a seatpost clamp to make the connector for the seatpost. Assemble the bits roughly and check the heights of the bottom bracket and dropouts are similar to the original bike to enable you cut these bits to the right size.
Weld this post connector up, and the steerer tube with the parts in situ as in the last photo in this step.
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