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PT: Exhaust Norvin - Exhaust System


ericg

Well Known and Active Website User
VOC Member
I too prefer the full frame but I guess the builder was invoking the "frameless" element of the original Vincent and giving it his own twist, which surely is the whole purpose of the exercise. If all Specials were the same they wouldn't be special ;)
Sure, and that's why I prefer them to stock machines.
So, I guess one day someone will be adding down tubes to an Egli frame, just to be different?;)
 

Glenliman

Well Known and Active Website User
VOC Member
Here's a homebuilt 2" set in 304ss.
Note the 2" diameter goes right to the exhaust nut. I thought that looked a little nicer than the short skinny bit then bulbous out to 2" that is usually seen with a 2" exhaust on a twin.

Glen
 

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Bill Thomas

Well Known and Active Website User
VOC Member
Don't worry Les, Some people don't like my Special !, Can't think why :) .
But I have took it apart now and made 2 Bikes from it, And they said in School, I was not clever :) !.
 

bmetcalf

Well Known and Active Website User
VOC Member
How creative do you get when tightening the rear cylinder flange screws?
 

brian gains

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VOC Member
slightly off topic, can a Vinnie V be squeezed into a slimline feather bed as I can't recall seeing it been done.
 

Cyborg

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VOC Member
My homemade pipes, some like & some don't, i do. photos of the flanges i made
Those flanges are a good idea. Might have to borrow that if my Comet’s slip fit spring arrangement doesn’t pass the acid test.The flanges must have made the alignment process a whole lot simpler.
 

vibrac

Well Known and Active Website User
VOC Member
Not a fan of the flanges almost as fiddly as the fine thread originals I will show a picture of the racing exhaust and stub pipe fixing on the new racer as soon as we get it back from the pipe bender at which point the bike will be cosmetically complete
we want it back from the bender ASAP in case things get worse but the fire has gone out of the project after a winter of work and more than a few pence spent. Our mid April meeting at Silverstone is off and there are no races to run it on, we just cancelled our rolling road tune up. Typical :mad::mad:for once we were actually on target! Hey Ho back to the workshop.
 

Cyborg

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VOC Member
This is what I came up with. Loops for springs have since been added. I would think that using a flange would make life a whole lot simpler. With the flange assembly in place you could easily tack the header on where you want it... remove and weld. With my setup, you have to make sure the header slides in and then play Pop Yoshimura with the oxy propane and rosebud to bend the pipe. I’m looking at it from a slightly different perspective because I have self imposed rules about doing everything in-house. That means factoring in equipment and skill level. Also my project is more of a cake decorating exercise and not a racer, so looks matter more. My spring arrangement has a Mad Max look about it, which I’m not all that thrilled with.
Anyway, please do post a photo or two. Hopefully it’s a moot point and my setup works and it’ll look better when it’s coated.

30247021-0044-4054-BAD5-A2F737100916.jpegC42B5D16-9908-4750-AC3C-46E33D7F360A.jpeg
 

vibrac

Well Known and Active Website User
VOC Member
This is what I came up with. Loops for springs have since been added. I would think that using a flange would make life a whole lot simpler. With the flange assembly in place you could easily tack the header on where you want it... remove and weld. With my setup, you have to make sure the header slides in and then play Pop Yoshimura with the oxy propane and rosebud to bend the pipe. I’m looking at it from a slightly different perspective because I have self imposed rules about doing everything in-house. That means factoring in equipment and skill level. Also my project is more of a cake decorating exercise and not a racer, so looks matter more. My spring arrangement has a Mad Max look about it, which I’m not all that thrilled with.
Anyway, please do post a photo or two. Hopefully it’s a moot point and my setup works and it’ll look better when it’s coated.
Mad max or not its speed of on and off that matters with a racer and you know what? things that are on a racer today often become fashion items tomorrow
incidentally now we have some time I may see about ceramic coating of the pipes if Roy Robertson does it,then it has to be an efficient improvement (and another fashion statement for tomorrows 'bike shed' gang)
 

Cyborg

Well Known and Active Website User
VOC Member
I could well be delusional, but praying that once the pipe is on there it will stay on there for a season or two. My current plan is for ceramic coating as well, although I did consider paint briefly. I’ll stick with my springs, but starting to like the idea of anything ( like the flanges) that cuts down on the initial build time. May be false economy and just kicking the can down the road, but it would be nice to have this project wrapped up so I can focus on the next one. No more specials in the foreseeable future. Way too time consuming.

PS. Widelines are prettier.
 

Glenliman

Well Known and Active Website User
VOC Member
I have a spare set of MK5 cams and followers in a drawer somewhere. Now and then when looking for something else I see them and think " new project"
Reality says this is a bit like rebuilding a blown up human starting with just a nose.
Fun though!

Glen
 
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Les Thomson

Well Known and Active Website User
VOC Member
My homemade pipes, some like & some don't, i do. photos of the flanges i made
I turned up rings to match stubs that screw into head.welded flange on pipe, after making pipe slipped ring over pipe. Ring can be rotated to line up with stub in the head. 6 positions
 

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