RH gear change for mk111

Hello Colin,

I had the same problem when trying to assemble a spare gearbox from different boxes. In my case the fault lay in the positioning of the hole in the kick start shaft not being compatible with the outer cover which when put in place snagged the spring. I ended up replacing the shaft with the hole located about 5mm further along the shaft and bingo. I'm sure others on the forum can tell you how many different outer cases and kick start shaft designs were made but that was my solution. Hope it helps Paul.

Attached photos may help a little. As Paul says, the Mix & Match possibilities of AMC 1, 2 & 3 gearboxes for a Norton are almost countless. Throw in the odd AJS & Matchless box inners, outers and shafts and the fun really does begin.

The most likely cause of the strangled spring can be seen if you compare the kickstart shaft area. The AMC 2 box has more room for a chunkier spring and a peg for this spring end to hang off. The earlier box has a pin hole for the spring end. Sometimes the end jumps out of this hole and just rests on the shoulder.

Attachments
AMC%201%20GearBox%20Inner%201.JPG
AMC%20Gearbox%20Springs.bmp
www.nor

Hi Colin,

I was fortunate to have access to a number of shafts and was lucky enough to find one with the locating hole 5mm further along the shaft. I have no idea whether the cases and shafts came from Nortons, Matchless or wherever I just know it works. A pal did suggest having a second hole drilled but wasn't sure how difficult it would be on such hardened steel. Worth looking into. Good luck Paul.

Paul, are you fitting rearsets or have you come up with a tidy solution to a left-hand rear master cylinder and operating system ?

Previously richard_payne wrote:

Paul, are you fitting rearsets or have you come up with a tidy solution to a left-hand rear master cylinder and operating system ?

I have converted to right hand gearchange and have a master cylinder solution. I use it with rearsets but have moved the foot pegs three times leaving the master cylinder in the same position. It could be used with standard foot peg position. If you send an email address I will send some photos. Could not load here.

Christopher, I've attempted a personal message.

If it doesn't work, you can contact me via the WD models mail on the tech advice page.

Previously colin_fairhurst wrote:

Hi I am trying to convert my Mk3 to right hand gear change I have fitted new inner and outer covers but every time i tighten outer case it fouls the kick-start return spring,so the kick-start won't return,i have built and rebuilt it about a dozen times any ideas please

I do not know if it is any help nut I used "Old Brits" Norton web site for their guides and found the gearbox guides very helpful. I have also changed my MK 3 to right hand gear change.

I too (at long last) am in the middle of changing my MK3 to right hand gear change rearsets, so I'd love to see your solution.

Some years ago another member kindly sent me a photograph of Pete Lovell's solution for the hydraulics side - it involved vertically mounting a cigar shaped japanese master cylinder to the back of the Z plate, actuated by the pedal shaft which ran through a keyhole milled in the to the Z plate. A small plate welded to the top rear face of the Z plate provided a mounting for the fluid resevoir.

I've tried attaching the photograph to this message but the file is too large, and has been rejected. So PM me and I'll forward you a copy.

Previously james_eastwood wrote:

I too (at long last) am in the middle of changing my MK3 to right hand gear change rearsets, so I'd love to see your solution.

Some years ago another member kindly sent me a photograph of Pete Lovell's solution for the hydraulics side - it involved vertically mounting a cigar shaped japanese master cylinder to the back of the Z plate, actuated by the pedal shaft which ran through a keyhole milled in the to the Z plate. A small plate welded to the top rear face of the Z plate provided a mounting for the fluid resevoir.

I've tried attaching the photograph to this message but the file is too large, and has been rejected. So PM me and I'll forward you a copy.

Sorry did not reply sooner email cwinsby@hotmail.co.uk I to had trouble with file size. If will send pictures showing my solution.

Chris - I've posted a couple of photo's to you.

Has anyone else got any photo's of nearside MK3 rearset brake pedal designs?