How the indicator back was made.Pt 1

[t140v]

Hi all, a few members were interested on what the inside of my repro indicator backs looked like so I thought I would show what I did start to finish to end up with a reasonable reproduction.

1.Had to make a new cutting post for my radius cutter as the old one could not make a 90mm ball.

2.Have a go making a simple half moon shape from a block of Aluminium.
Make sure I could machine the hole for the indicator stem.

[t140v]

3.Make another back and try and remove as much from the back using my milling attachment, this was hit and miss as I used the indicator stem to hold the back in the vice for machining, removed a bit too much and went through the bottom.

Attachments:

[t140v]

4.Last try altered the start of machining to leave a foot on the bottom of the back so that it could be gripped in the jaws of the lathe then machined as much metal out as possible, if I had a rotary milling table would have been able to remove the metal marked with black ink.








Hope that answers everyone's questions.

Regards Stuart.

[ap951]

Excellent excellent work Stuart, I admire your attention to detail

[timpa136]

Most impressive craftsmanship. A lot of hours of labor/Love right there.

[goandy]

Yup, pretty awesome. Well done! Must get one of those radius cutters for my lathe...

[jm0406]

Thank you for the guided tour. Something that sticks out so prominently on the bike should look first rate.
Jeff

[Jess]

Very nice job.

I am nowhere near talented enough to pull that one off myself.

Bravo.

Best