What no Velocette's?

Velocette broke records at Brooklands and won two TT races as well as developing features like spring frames and foot gear changes. The last racing motorcycles appeared in the early 1950s when the most popular Velocettes were small motorcycles with very quiet shaft drives.

Re: What no Velocette's?

Postby graffian » Wed Jan 06, 2010 8:24 pm

Not a lot to say. Took it apart and found very little that was reusable.
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Re: What no Velocette's?

Postby dig » Thu Jan 07, 2010 12:25 am

On the floor in bits so its easy to kick around and thats where it should stay :) :) :250 nz-flag111
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Re: What no Velocette's?

Postby graffian » Thu Jan 07, 2010 3:33 am

All has been replaced. gearbox needs putting back together, few parts powder coating and hopefully
it will be wonderful.
Image
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Re: What no Velocette's?

Postby Tman » Thu Jan 07, 2010 10:46 am

I bet those gears whine like a Caliph in a cat-house. :101
Lack of oil, or just too much use?
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Re: What no Velocette's?

Postby Welsh Wizard » Thu Jan 07, 2010 11:58 am

graffian wrote:All has been replaced. gearbox needs putting back together, few parts powder coating and hopefully
it will be wonderful.
Image

I presume with new gear and this is the picture of what you are throwing out.
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Re: What no Velocette's?

Postby graffian » Thu Jan 07, 2010 4:58 pm

The patented Velocette wavy involute tooth form~?

Well all the gears were like that. That's third, I went to a velo felo who has lot's of parts, I expected to be able to
get a whole set of gears. Every gear he had was like the pictured one and it seems that every box he has taken
apart has needed second[which isn't available, but you can cut down a venom 2nd gear]! Gearbox cover had
several cracks, so have to hope the gears were so bad cos it had been run dry. As you would expect it cost quite
a lot to replace all the gears, I bought new shafts as well, but after looking at secondhand gears that were worn I
decided no way would i buy a box without looking indside it.

Want to see some special piston rings?


Image
All I can say about these is why?
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Re: What no Velocette's?

Postby Welsh Wizard » Fri Jan 08, 2010 9:07 am

http://www.bostongear.com/pdf/gear_theory.pdf

This is very basic gear info, but will tell you how screwed your gears are.

with the amout of wear on the tooth face, your back lash will be way over the top which will lead to noisy gears and also rin the risk of tooth failure with resulting destruction of the gear box being terminal.
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Re: What no Velocette's?

Postby twinspin » Sun Mar 14, 2010 6:09 pm

MOUSE wrote:The floor is yours Sir :151


Well not really because I am posting as an imposter as I no longer have one. I used to have an early fifties 350 MAC in the mid/late sixties when I was barely old enough to ride that I bought for a tenner and also used to have a mate with a Venom /Steib combination which was really great fun.
I must admit that I would like a Venom now if I came across one at the right price (highly unlikely). What I do remember is that the build quality was next excellent. I remember decoking the MAC and the carbon just pinged off the head revealing mirror finish aluminium with no machining marks or bubbles. A far cry from what you see in a later triumph unless you were very lucky.
Perhaps there are lurking posters who have memories or experiences (good or bad) of Velocettes.
Mike :151
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Re: What no Velocette's?

Postby graffian » Tue Mar 30, 2010 4:10 am

Welsh Wizard wrote:http://www.bostongear.com/pdf/gear_theory.pdf

This is very basic gear info, but will tell you how screwed your gears are.

with the amout of wear on the tooth face, your back lash will be way over the top which will lead to noisy gears and also rin the risk of tooth failure with resulting destruction of the gear box being terminal.


So you think I should replace that gear pair.
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Re: What no Velocette's?

Postby Welsh Wizard » Tue Mar 30, 2010 7:42 am

it goto run run rough looking like that, if they are available and you can afford would not be a bad idea.
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