grouty
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I did say a while back I would post up my "made in a hurry" fork tool with measurements.
The damper rod .....
The flats on the damper rod are 20mm apart. Depth to the shoulder is 4.5mm
Bit difficult to hold the camera and the vernier! It does actually measure 19.9mm
I found that an old half inch drive 13/16" A/F socket had the correct O.D. to fit inside the fork leg. This is 28.5mm (or 1"1/8) diameter. Any bigger will not fit down inside. If you have a 20" long extension bar use that too.
The socket was cut with a grinder and Dremel tool to look like the picture below. Be careful how wide you make the cut out. Any bigger than 20mm and you risk rounding the soft alloy of the damper rod.
This is a nice snug fit over the top of the rod.
I made the depth of the cut out in the socket 9mm deep.
Yes, it is a real bodge, but it works beautifully. I have used this several times now without any issues.
The damper rod .....

The flats on the damper rod are 20mm apart. Depth to the shoulder is 4.5mm
Bit difficult to hold the camera and the vernier! It does actually measure 19.9mm

I found that an old half inch drive 13/16" A/F socket had the correct O.D. to fit inside the fork leg. This is 28.5mm (or 1"1/8) diameter. Any bigger will not fit down inside. If you have a 20" long extension bar use that too.
The socket was cut with a grinder and Dremel tool to look like the picture below. Be careful how wide you make the cut out. Any bigger than 20mm and you risk rounding the soft alloy of the damper rod.

This is a nice snug fit over the top of the rod.

I made the depth of the cut out in the socket 9mm deep.
Yes, it is a real bodge, but it works beautifully. I have used this several times now without any issues.