CAN YOU TELL WHAT IT IS YET?

[Mallard]

You may have a very valid point there. It is something we discussed, but when you take into account the minimal usage that the bike will be put to, the fact that it has a huge front brake, the small amount of use the rear will get we thought it would not be too much of a problem. Also, if the wheel locks, the torque arm will be pulling more into the swing-arm, so possibly less of the open-ended spanner effect you mentioned. But whatever, I do think it looks good.

 

[timeandtide]

Both look very well to my mind.

 

[dashfixer]

A few 'opportunities' (as in problems) along the way.

The rear wheel's axle wouldn't fit the Norton swing-arm, and the Norton axle wouldn't fit the wheel, so we had to make an axle that would suit both.

We then needed a rear brake torque arm. As we didn't want to weld brackets to the frame or swing-arm;- things didn't line up anyway, we designed and made this. It locks the brake plate to the swing-arm. Not only is it functional but also a work of art. Well, I think so.

We thought the carb manifolds available for Triumph's were a bit naff. So again, we designed and made these. 30mm at the carb, 29mm at the head.

The work continues.

I like that torque arm, my kind of engineering.

 

[Mallard]

I like that torque arm, my kind of engineering.

Thanks for the compliment Dash - always welcome. The bike was finished a while back now. Here's a picture of the 'nearly' finished, and for the eagle eyed among the collective - a plug was made for the primary case. Putting the brake on the opposite side to the standard Norton was only half the challenge. A brake pedal was also needed. 3rd picture shows how it started, 2nd picture shows progress, (Mrs Mallard is still looking for her 'mislaid' chopping board!) 4th picture shows completion - cable looks at a funny angle, but the adjust pivots so it pulls straight. A cam was also incorporated to adjust pedal height.

 

[dean0n0]

Looks nice, has it had a thrashing yet?
A mate had a Triton race bike, it had an 8Ls front brake, nearly as big as the rim, it'd lock up if you even thought about braking, the back would lock, not from the brake, but if you didn't give it a fist full when changing down, I don't remember using the back brake. It vibrated so much, when you opened it up the world blurred.
Getting back on my 250 Yam was a pleasure, and a relief!

 

[Number 6]

Those front brake torque stays look rather fragile to me? I have the same Fontana 250 brake in a Trident, the stays are made from 5mm Aluminium provided by Molnar Precision for that purpose.



Mine.

 

[Mallard]

Those front brake torque stays look rather fragile to me? I have the same Fontana 250 brake in a Trident, the stays are made from 5mm Aluminium provided by Molnar Precision for that purpose.

View attachment 378755

Mine.

View attachment 378756

View attachment 378757

The ones on the Triton are made from aircraft grade stainless. They are not fragile.

 

[Number 6]

The ones on the Triton are made from aircraft grade stainless. They are not fragile.

I'd assumed they were alloy.