Farlows Perfect and Regal Fly Reels - Drum Screw Question

[Parabolic]

Does anyone have any information as to what the thread is on the drum retaining screw for the Farlow Perfect type reels?

I have a couple of these reels but for some reason the screws are not interchangeable.

It's a left hand screw thread, I thought it was 1/8" BSW, but it's not quite right. Maybe it's a BA type thread or even a bespoke one (I believe some of the earlier Hary Perfects had 'unique' threads devised by Hardys themselves).

Any help much appreciated.

[Watermole+]

Would it be possible to measure the diameter of the screw? Even allowing for it being a little undersize, it will be a good starting point and having a pitch gauge would be even better.
If you would care to post it to me, I could soon calculate it for you and possibly provide a replacement if necessary as I have many now obsolete split dies.

Most of the Hardy reels that I have encountered did indeed use Whitworth based threads but there were more of the smaller fractional sizes then, down to 1/16” diameter which may explain some of the anomalies. Identifying them is a bit of a minefield!

Send a PM if you think I might be able to help..

wm+

[Harry H]

Does anyone have any information as to what the thread is on the drum retaining screw for the Farlow Perfect type reels?

I have a couple of these reels but for some reason the screws are not interchangeable.

It's a left hand screw thread, I thought it was 1/8" BSW, but it's not quite right. Maybe it's a BA type thread or even a bespoke one (I believe some of the earlier Hary Perfects had 'unique' threads devised by Hardys themselves).

Any help much appreciated.

Can't help about the screw size but the reason for the different threads maybe the Regal was probably made by Farlow whereas the Perfect type reels they had were probably made by Youngs?
I too have both reels and there's a difference in quality of materials.