Drain Cock search

Drain Cock search

This topic has 4 replies, 3 voices, and was last updated 20 August 2025 at 20:20 by bernard towers.

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20 August 2025 at 14:13 #813204
Speedy Builder5
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@speedybuilder5
I have a damaged draincock following a derailment. Has anyone a spare they would be willing to part with or information of a possible supplier. It is to an LBSC design, but not available from Reeves as it has a 7/32 x 40tpi thread.

ob
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20 August 2025 at 15:20 #813209
bernard towers
Participant
@bernardtowers37738
As you have a drawing can you not make a replacement?
20 August 2025 at 15:35 #813213
Juddy
Participant
@juddy
Polly Model Engineering have them:

https://www.polly-me.co.uk/index.php?route=product/product&path=106&product_id=311
20 August 2025 at 17:37 #813222
Speedy Builder5
Participant
@speedybuilder5
Thank you Judy. I will see if they would “break” a pack.

Bernard – I have started to have a go at making one and started off by making the “D” shaped taper reamer. I see a problem of making the tapered plug.

Leaving the topside (of my watchmaker’s lathe) set to the same angle as the reamer, I can turn the taper plug, then will either have to set the topside back to zero and turn parallel for the 10Ba thread one end and the square the other end or move over to the Boxford and try to centre it up in the larger chuck. If I choose to set the watch lathe back to zero and bog up the brass plug, I can’t accurately set up the same angle again – Oh dear !

Bob
20 August 2025 at 20:20 #813231
bernard towers
Participant
@bernardtowers37738
turn the 10ba stub first on 2 or 3 bits then set over and turn the reamer and the tap tapers
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