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#1
22-12-15, 19:05
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Muzzle brake progress...
Getting the pitch and left hand thread worked out. Cheers Rob
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1942 C8A- HUW " Wireless Nipper" 1943 F-60S LAAT and 1939 Bofors 1942 C8 Wireless 1943 FAT/ 17 pounder 1941 C15 GS 2B1 Last edited by Rob Fast; 23-12-15 at 01:04. 
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#2
23-12-15, 19:16
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Harold does nice work!
 David
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#3
23-12-15, 23:34
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Yes he does David...
A couple of more pics of todays progress. Cheers and Merry Christmas all.
__________________
1942 C8A- HUW " Wireless Nipper" 1943 F-60S LAAT and 1939 Bofors 1942 C8 Wireless 1943 FAT/ 17 pounder 1941 C15 GS 2B1 Last edited by Rob Fast; 28-12-15 at 18:18.
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#4
24-12-15, 01:47
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Curiosity question, Rob. Is the orientation of the lateral holes in the muzzle brake, in relation to the threads on the brake, critical?
I am just trying to understand how the lateral holes end up to each side of the barrel horizontally when the muzzle brake is run home on the end of the barrel. Good thing I am not a cat. I would have been dead years ago! David
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#5
24-12-15, 06:49
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Is that not what the back nut is for? To lock it in final position? I have seen images of museum examples that have the brake set so that the holes are not horizontal!! I don't know how critical it would be under fire?
Beautiful piece of machining by your engineer Rob. Ron
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#6
24-12-15, 13:25
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That is what the nut is for, along with a flat washer that goes between them. If the holes are not aligned l/r, you end up with a very large cloud of dust and a lot of debris being thrown around.
This muzzle brake example came off one of the 17 pdrs from the Shilo museum. It was not perpendicular before it came off but I can assure you it will be when it goes back on.
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#7
24-12-15, 17:35
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Thanks for the clarification, Rob.
David
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