Be the envy of your friends by shoving an extra gear into your 650 Trumpet.
Things you'll need:
Step one - Mr. Gorbachev, tear down this gearbox!
This is a 1950 4-speed gearbox. Aint she purdy? I bet some stuffy bike restorer would love to get his well manicured mitts on this. Well tough titties, Sir Reginald Snottybottom! We're going to stuff her full of five speed goodness.
I'm not going to explain how to unbolt everything in fine detail because pretty much every workshop manual and reference covers this.
NOTE: All off this can be applied to 4-speed unit and pre-unit motors alike.
Cover removed
The inner cover
The inner cover removed and the gears exposed
Things you'll need:
- A Triumph workshop manual
- Tools (esp. an angle grinder and a large round file suitable for Aluminum)
- A complete 5 speed cluster with all the associated selector forks, camplate, sleeve-gear bearing, selector quadrant, gearchange quadrant, and final drive sprocket, nut and lockwasher
- TONS of patience.
- I also recommend Wes White's 650 Triumph engine Rebuild dvd. You can get this at http://lowbrowcustoms.com/ or http://www.fouracescycle.com/. It's a great reference and he goes into detail on teardown and reassembly of the stock gearbox.
Step one - Mr. Gorbachev, tear down this gearbox!
This is a 1950 4-speed gearbox. Aint she purdy? I bet some stuffy bike restorer would love to get his well manicured mitts on this. Well tough titties, Sir Reginald Snottybottom! We're going to stuff her full of five speed goodness.
I'm not going to explain how to unbolt everything in fine detail because pretty much every workshop manual and reference covers this.
NOTE: All off this can be applied to 4-speed unit and pre-unit motors alike.
Cover removed
The inner cover
The inner cover removed and the gears exposed
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