WNG Gearbox
- alan.moore
- Holder of a Golden Anorak
- Posts: 1457
- Joined: Sat Jul 19, 2014 1:29 pm
- Location: Leicestershire UK
- Contact:
WNG Gearbox
Going through the various gearbox changes during production... in late 1942 a drain plug for the main gearbox shell appears in the parts list 3343-42 but the spares number for the main gearbox shell remains the same as the earlier WNG ones (which incidentally is listed as being the same as the prewar civi CP box shell) part number 3001-33.
The casting / part number of the 'non drain-plug' shell is 1CP/M4 (IV) . If anyone has a shell/gearbox with a drain plug fitted can they let me know what the part number is. It should be on the front of the case by the upper slotted casting
Cheers
Alan
The casting / part number of the 'non drain-plug' shell is 1CP/M4 (IV) . If anyone has a shell/gearbox with a drain plug fitted can they let me know what the part number is. It should be on the front of the case by the upper slotted casting
Cheers
Alan
1939 VH Redhunter;1942 RN WNG;1951 Triumph 6T Thunderbird;1970 BSA B175 Bantam;1986 Yamaha SRX600 single;1952 VHA engined project
http://cloggymoore.wix.com/triumph-pre-unit-6t
http://cloggymoore.wix.com/triumph-pre-unit-6t
-
- Holder of a Platinum Anorak
- Posts: 5051
- Joined: Tue May 10, 2011 9:42 am
- Location: Victoria.. Australia.
- Contact:
Re: WNG Gearbox
Alan I've checked 3 cases Cast Number is in a different place (Lower down on front)... 1/CP M(over)4 with another 4 under that (indistinct on one) all with drain plug from original. Nev
- alan.moore
- Holder of a Golden Anorak
- Posts: 1457
- Joined: Sat Jul 19, 2014 1:29 pm
- Location: Leicestershire UK
- Contact:
Re: WNG Gearbox
nevhunter wrote:Alan I've checked 3 cases Cast Number is in a different place (Lower down on front)... 1/CP M(over)4 with another 4 under that (indistinct on one) all with drain plug from original. Nev
Cheers Nev
So like the following (is it a 4 or an IV)
Cheers
Alan
1939 VH Redhunter;1942 RN WNG;1951 Triumph 6T Thunderbird;1970 BSA B175 Bantam;1986 Yamaha SRX600 single;1952 VHA engined project
http://cloggymoore.wix.com/triumph-pre-unit-6t
http://cloggymoore.wix.com/triumph-pre-unit-6t
-
- Holder of a Platinum Anorak
- Posts: 5051
- Joined: Tue May 10, 2011 9:42 am
- Location: Victoria.. Australia.
- Contact:
Re: WNG Gearbox
Like the bottom one. No roman numerals but the I/CP is as I have here, a forward slash. ALL 3 the same. Nev
-
- Holder of a Waxed Cotton Anorak
- Posts: 483
- Joined: Mon Sep 12, 2011 2:16 pm
- Contact:
-
- Holder of a Waxed Cotton Anorak
- Posts: 483
- Joined: Mon Sep 12, 2011 2:16 pm
- Contact:
- alan.moore
- Holder of a Golden Anorak
- Posts: 1457
- Joined: Sat Jul 19, 2014 1:29 pm
- Location: Leicestershire UK
- Contact:
Re: WNG Gearbox
Nev & Andy
Thanks for the info.
Andy...quite a collection!!
So all this info confirms there was a change in part number for the box with the drain plug
Just out of interest can you both post the gearbox serial numbers for those with the drain plug. And Andy, if you could identify which gearbox serial number is for the box with the Y suffix included in the cast number.
Thanks again for the help
Cheers
Alan
Thanks for the info.
Andy...quite a collection!!
So all this info confirms there was a change in part number for the box with the drain plug
Just out of interest can you both post the gearbox serial numbers for those with the drain plug. And Andy, if you could identify which gearbox serial number is for the box with the Y suffix included in the cast number.
Thanks again for the help
Cheers
Alan
1939 VH Redhunter;1942 RN WNG;1951 Triumph 6T Thunderbird;1970 BSA B175 Bantam;1986 Yamaha SRX600 single;1952 VHA engined project
http://cloggymoore.wix.com/triumph-pre-unit-6t
http://cloggymoore.wix.com/triumph-pre-unit-6t
-
- Holder of a Platinum Anorak
- Posts: 5051
- Joined: Tue May 10, 2011 9:42 am
- Location: Victoria.. Australia.
- Contact:
Re: WNG Gearbox
I don't have anything but the main cases. The outer cases could have been changed at any time. I have managed to buy 2 NEW Military ones over time.
THOSE cast in numbers often have no recognisable significance . It's on a pattern for many reasons. Could be it's done at a different foundry or a special batch or an extra run. (so you can trace a batch)
Also,The middle and outer cases are MATCHED but not polished in any way . Just coarsely" fettled" near the mating faces as a pair where the gasket goes. New ones have NO stamped Numbers. The alloy Primary drive cases are (as cast) as well and treated a similar way . I've always just left them "as original".. You can't get a polished one back to that Nev
THOSE cast in numbers often have no recognisable significance . It's on a pattern for many reasons. Could be it's done at a different foundry or a special batch or an extra run. (so you can trace a batch)
Also,The middle and outer cases are MATCHED but not polished in any way . Just coarsely" fettled" near the mating faces as a pair where the gasket goes. New ones have NO stamped Numbers. The alloy Primary drive cases are (as cast) as well and treated a similar way . I've always just left them "as original".. You can't get a polished one back to that Nev
-
- Holder of a Waxed Cotton Anorak
- Posts: 483
- Joined: Mon Sep 12, 2011 2:16 pm
- Contact:
Re: WNG Gearbox
Hi Alan,the Y box is the one that has the number on, it does have the drain bung in,all the rest are as Nev says as cast finish and some even have grind marks in them and not cleaned at all.I have a couple of matchless ones that are also rough finish.Hope this is of interest.
-
- Holder of a Golden Anorak
- Posts: 2382
- Joined: Sat Jul 07, 2018 5:39 pm
- Contact:
Re: WNG Gearbox
i was thinking because they were making for the war effort to save time did not fit it and think the bikes would not come back wen they have done their job like the little motorbike that they drop out the airplanes that was made for one job and dump
Who is online
Users browsing this forum: No registered users and 22 guests