• New Member Special Offer

    Join the Vincent H.R.D. Owners Club today, and get a special offer of 14 months for the price of 12 (your membership will expire on 31st December 2020)!

    There is a mass of information, including many thousands of technical articles which have been written since the Club started in 1948, which are only available to Members of the Club. Once you join, your membership of this forum will be upgraded and you'll get access to them, as well as many other features.

    To join, simply click HERE and follow the simple instructions.

    Ron and Linda Thomas - Membership Secretaries.
  • Welcome to the website of the Vincent H.R.D. Owners Club.

    Should you have any questions relating to the Vincent H.R.D. Owners Club, or Vincent H.R.D. motorcycles in general, please contact Graham Smith, Hon. Editor and Webmaster by calling 07977 001 025 or please CLICK HERE.

    You are unrecognised, and therefore, only have VERY restricted access to the many features of this website.

    If you have previously registered to use this forum, you should log in now. CLICK HERE.

    If you have never registered to use this website before, please CLICK HERE.

E: Engine Comet Mongrel


Robert Watson

Well Known and Active Website User
VOC Member
No measurements. Pretty much just fit the piece to pick up what existed, but I will say that I have pushed it a bit on some twisty roads and it certainly handles as it should.
 

Cyborg

Well Known and Active Website User
VOC Member
Well the project is still alive.. stainless exhaust stub, so header can be held on with springs. Rather than try and hammer a flange, I ran a bead with the TIG around the end and then chucked in the lathe. Will have to make sure the springs seal it well enough to keep interloping O2 molecules away from the air/fuel sensor.
Also making cables. Made a new solder pot from leftover bung welding practice bits and made a birdcage tool. So much easier when you have the solder pot.

197C763A-9C4C-4C59-8757-932D61A43391.jpeg64C735C1-ED32-4C99-97CF-7D90CB8231CF.jpegD83BE119-EEF4-4116-826E-8590EF597B12.jpeg1B6AB222-25BF-45FF-86C7-86275773CC88.jpeg18FDF2AB-0D59-404B-AD8B-36D05A513B0D.jpeg0E9ECAA4-5AB2-4B59-9A3E-C90706BDDB12.jpeg60823CD7-6C62-4354-826D-AA7B57271558.jpeg
 

Cyborg

Well Known and Active Website User
VOC Member
I retired my pipe end cap. Too lazy to make a holder, but admire your design. I would be tempted to copy it but actually like the way the alloy one heats up quickly.
I bought some of this flux and maybe it’s just my imagination, but it seems to work way better than the old tin of paste. I have 2 of those vice grip clamps that I inherited. Never been used... I should take them out of the drawer and hang them next to the drill press.
52EAFB82-0A0F-4F66-811A-4780DDD9B131.jpeg
3F64A87C-4350-417B-83D4-64E13CD6D575.jpeg
 

Cyborg

Well Known and Active Website User
VOC Member
Making the plug for the tank mold, the tank mold, and then the tank itself was a bit of an exercise. Seat base (made to hopefully compliment the rear of the tank) is 3003 alloy and isn’t quite finished. Have a feeling that I should have stuck with the original plan to make the tank out of aluminum as well, but need to finish this contraption and move on. Although making the tank out of fibreglass was labour intensive, given my experience working with aluminum and equipment at hand, it was a more expedient way of making something to hold fuel. You’ll have to excuse the Japanese bits.

34981D42-BB60-4AAB-A909-71C76002F0F0.jpeg
 

Bill Thomas

Well Known and Active Website User
VOC Member
I like a tank with a bit of shape to it, I made a rear section with seat in Fi glass once, It weighed a ton,
I kept thinking, Put some more on to make it stronger !.
 

ericg

Well Known and Active Website User
VOC Member
"You’ll have to excuse the Japanese bits."

Sorry Cyborg, can't do this!:)
Good luck with this great project anyway.
 

Cyborg

Well Known and Active Website User
VOC Member
I like a tank with a bit of shape to it, I made a rear section with seat in Fi glass once, It weighed a ton,
I kept thinking, Put some more on to make it stronger !.
The tank is styled after a MV single racer from back in the day. I think it is safe to say using too much glass is quite common. My tank is thicker than it needs to be, basically because I was unsure what I could get away with and didn’t want to go through the vacuum bagging process. Mine is definitely thicker than the current tanks coming out of places like Airtech Streamlining (under 2mm), but similar to an old Manx tank that was made in the UK back in the 70’s. David has suggested something similar to the setup on his Grey Flash and that would be a much better way to go if I wanted to keep the weight down.
 

Cyborg

Well Known and Active Website User
VOC Member
"You’ll have to excuse the Japanese bits."

Sorry Cyborg, can't do this!:)
Good luck with this great project anyway.
Thanks

Well I think I have mentioned previously that I’ve been schlepping those wheels/brakes around since 1981. They were sitting in my “someday I’m going to use that” shed and I’m running out of somedays. Whoever inherits this abortion can remove the engine/ gearbox and hurl the rest into the dumpster.

Some nice 4L/S laced to alloy rims would be preferable, so if you’re willing to start a Go Fund Me page it would be appreciated.
 

Cyborg

Well Known and Active Website User
VOC Member
Good experience making it though. I could have used a seat like that on the retched Ducati 1098. Easier to manipulate the controls when not busy hanging on for dear life.
I also made a belly pan out of aluminum which is large enough to hold all the oil and my newly installed big end bearing if things go south. I’ll post a photo of it when I get a chance. Flying a different flag for a bit... whenever I mention a motorcycle related purchase to the bride, she just smiles and offers encouragement. As we all know that means there is another shoe to drop somewhere. Yesterday that shoe dropped on a beach about a alloy rimmed 4L/S brake’s distance from my shop.
 

Robert Watson

Well Known and Active Website User
VOC Member
Good experience making it though. I could have used a seat like that on the retched Ducati 1098. Easier to manipulate the controls when not busy hanging on for dear life.
I also made a belly pan out of aluminum which is large enough to hold all the oil and my newly installed big end bearing if things go south. I’ll post a photo of it when I get a chance. Flying a different flag for a bit... whenever I mention a motorcycle related purchase to the bride, she just smiles and offers encouragement. As we all know that means there is another shoe to drop somewhere. Yesterday that shoe dropped on a beach about a alloy rimmed 4L/S brake’s distance from my shop.

Pictures or it didn't happen!!
 

Cyborg

Well Known and Active Website User
VOC Member
Found some on my phone. Rube Goldberg jig for shaping.. TIG welded in both ends which have a similar radius to the wheels. Since been trimmed quite a bit to clear things.
88E33DAB-72AD-4990-B640-89860F7ED77E.jpegA3FC5F2C-5222-416D-B4A7-A72490A3422B.jpeg9E58E29B-E20D-4E0F-87A4-AC4954B2452A.jpeg912470C0-8E98-45C2-8B67-32369F559533.jpeg
 
Last edited:

Cyborg

Well Known and Active Website User
VOC Member
I keep finding Super Bikes for little money, But the Wife says NO, Maybe I should not ask ?,
I don't think she would know one from another.
Well there is the old adage.. easier to ask for forgiveness than ask for permission.
A fellow I know (if his wife notices) just tells her he’s fixing it for a friend. Seems to have gotten away with it so far.
 

vibrac

Well Known and Active Website User
VOC Member
Funny. my wife often sits through bike auctions she loves the drama. it's handy I can always ask what she thinks a bike is worth as a second opinion and generally she is not too far out
 

Jez Nemeth

Well Known and Active Website User
VOC Member
Sounds like I could do with her help next time I'm selling a bike just to remind folx, price on the tag is what it's worth! Like the body work Cyborg BTW, I did same a Bill, heavy seat unit in Fiberglass, looks well, eye of beholder -I like it. On reflection should have used a tapered spun alloy tail cone cut in two and welded to a seat base, and more durable. Got to ask, what inner sealant you intend using on tank?
 

Cyborg

Well Known and Active Website User
VOC Member
Thanks... this is a copy of what I posted in the tank cover thread: “Ethanol free fuel is easily obtained locally, but just in case... the tank is constructed with a marine epoxy instead of the usual resin. The benefits being that it doesn’t stink (which helps maintain marital bliss) and isn’t frightfully expensive. While it is resistant to ethanol, there is some debate about the long term results. The blush from the epoxy was removed and the inside of the tank was sanded prior to assembly. Once cured, the tank was washed and rinsed out several times to remove any new blush that may have formed around the bottom seam. Now it gets a complete internal coating of phenol novolac epoxy just in case I do encounter some ethanol down the road. Using the phenol novolac epoxy for the last layer of fibreglass might have made more sense and I may explore that avenue if there is ever a next time.”

Rather than try and track down a supplier for the phenol novolac epoxy, I just ordered the tank sealer from Caswell https://www.caswellcanada.ca/epoxy-gas-tank-sealer.html It seems as though any problems are due to bonding issues and that’s why I first cleaned and then sanded the inside of the tank before assembly. They still market this stuff as ethanol resistant as opposed to ethanol proof, but don’t plan on testing it. It is pretty easy to avoid ethanol where I live. There is a Chevron just up the road and their premium fuel doesn’t contain any. It even has a dedicated hose, so you’re not dealing with the possibility of getting whatever grade was pumped by the last customer. It’s completely ethanol free.
 

Jez Nemeth

Well Known and Active Website User
VOC Member
Thx Cyborg really appreciated, teach me to read back through threads too :) Haven't seen non-ethanol for quite a while now at the gas stations here in Wales/Bristol, so looking at a cafe tank that will need to be 're-created' in steel most likely, but am looking at alternatives. On another note, Oil in the belly pan, standard pump?
 

Latest Forum Threads

Can't Find What You Need?

Top