• Required reading for all forum users!!!

    Welcome!
    Register to access the full functionality of the GSResources forum. Until you register and activate your account you will not have full forum access, nor will you be able to post or reply to messages.

    A note to new registrants...
    All new forum registrations must be activated via email before you have full access to the forum.

    A Special Note about Email accounts!
    DO NOT SIGN UP USING hotmail, outlook, gmx, sbcglobal, att, bellsouth or email.com. They delete our forum signup emails.

    A note to old forum members...
    I receive numerous requests from people who can no longer log in because their accounts were deleted. As mentioned in the forum FAQ, user accounts are deleted if you haven't logged in for the past 6 months. If you can't log in, then create a new forum account. If you don't get an error message, then check your email account for an activation message. If you get a message stating that the email address is already in use, then your account still exists so follow the instructions in the forum FAQ for resetting your password.

    Have you forgotten your password or have a new email address? Then read the forum FAQ for details on how to reset it.

    Any email requests for "can't log in anymore" problems or "lost my password" problems will be deleted. Read the forum FAQ and follow the instructions there - that's what we have one for...

  • Returning Visitors

    If you are a returning visitor who never received your confirmation email, then odds are your email provider is blockinig emails from our server. The only thing that can be done to get around this is you will have to try creating another forum account using an email address from another domain.

    If you are a returning visitor to the forum and can't log in using your old forum name and password but used to be able to then chances are your account is deleted. Purges of the databases are done regularly. You will have to create a new forum account and you should be all set.

Scratch built GS

  • Thread starter Thread starter Urban spaceman
  • Start date Start date
This was back in September, back wheel which is was done mostly on my lathe and with a waterjet cut center, which is under construction.....
drag%2Bwheel%2Bracing%2Bbillet%2Bbike%2Bsplit%2Brim.jpg
 
And this is where it's up to as of today.
Sprocket support plate also waterjet cut and finished on the mill.
sprocket%2Boffset%2Bsupport%2Bbearing.jpg
 
rapidray said:
Cool! I am always open to learning new things! I look forward to seeing your pictures & experience!
Ray.
Click to expand...

Yeah, you may learn exactly how NOT to build a dragbike lol.

I'm no expert ray, you'll know a damn sight more than i do. I'm just having a go and enjoying doing it.
 
Some more progress. Theres more work than i anticipated .... been on the go 12 months now, but getting there :)
file.php
 
Looks like plain old fillet brazed to me. If you are melting the parent steel tubing during the process I can see why they might call it "welding" though. At any rate, the rear end of that frame looks killer stiff but the front looks spindly. Particularly along the top backbone. Hopefully it's just an optical illusion.

Looks like a fun project.
 
Nessism said:
Looks like plain old fillet brazed to me. If you are melting the parent steel tubing during the process I can see why they might call it "welding" though. At any rate, the rear end of that frame looks killer stiff but the front looks spindly. Particularly along the top backbone. Hopefully it's just an optical illusion.

Looks like a fun project.
Click to expand...

I've no idea why it's called bronze welding and no it doesn't melt the parent material, but it clearly differs from fillet brazing as ... well theres not a smooth fillet formed and the bronze doesn't flow at all.
It's the 'engineering' term for the process though and it uses a different composition of filler rod to brazing or fillet brazing.
The front end is somewhat unimportant on a drag bike (so long as it doesn't fall off it will do the job), but that said it's still got one cross tube to go in once i've decided how big to make the fuel tank. And remember the tubes ain't 1" erw like the factory tubes it's seamless 1 1/4 T45 tube. And it's amazingly strong :)
 
i forgot all about this thread. The bike is now finished and has done 3 race meetings, 2 of which were rained off and one it won. It handles really good and stops easily. I hope you like it.
Currently using my old bikes engine which is 1500cc with 26/31 valve head and 40mm Lectons. The new engine will be ready for next season hopefully.
Best time so far is a 7.34 @177mph and a 1.07 60ft.
IMG_5050.jpg

IMG_5116.jpg
 
Wow! Insane pass. Laser straight, and bike seems to hook up perfectly.
 
Looks MINT PHIL!! More NOS and Bigger Dia NOS Hoses ha ha . Mike
 
steve murdoch said:
Excellent, Spaceman.
Love that sound.
What is the motor plan for next year?
Click to expand...

I have a Vance & Hines 2 valve head with massive valves, 1640 block and pistons, and some 48mm lectrons.
But, seeing as how this engine has more to come i might stay with it till i find it's limits. I'll strip it over the winter and see what shape it's in.
 
Rob S. said:
Yeah, but how does it handle around town? :biggrin:
Click to expand...

It'd handle fine in town, it's nippy enough to get you out of a tight spot and stops quick :D
But if your riding a GS1100 in town you probably got lost or your unfortunate enough to live in one.
 
Last edited:
Wow, great build! Can you elaborate on what filler rods you used?

I have acquired a bronze welded '77 Rickman CR900 frame that was a cracked race bike, repaired and much more substantially braced by previous owner John Cordona of Fours 'N More fame (many of his builds were featured in magazines in the 80's), & modified with GS1100E engine mounts... he unfortunately passed away before finishing this project, & it has been sitting in his friends' shop in storage for around 15 years or more now... I plan to build a vintage road racer oriented bike out of it, but need to finish the engine mount work and gussetting.

How's the new engine or old engine upgrade going? That is a very fast machine... great job on the feame, and everything!
 
Chuck78 said:
Wow, great build! Can you elaborate on what filler rods you used?

I have acquired a bronze welded '77 Rickman CR900 frame that was a cracked race bike, repaired and much more substantially braced by previous owner John Cordona of Fours 'N More fame (many of his builds were featured in magazines in the 80's), & modified with GS1100E engine mounts... he unfortunately passed away before finishing this project, & it has been sitting in his friends' shop in storage for around 15 years or more now... I plan to build a vintage road racer oriented bike out of it, but need to finish the engine mount work and gussetting.

How's the new engine or old engine upgrade going? That is a very fast machine... great job on the feame, and everything!
Click to expand...

Hi, i used Sifbronze 101 rods, (contain manganeese and tin i think). Very nice to use especially with an inline gas flux unit and should be prefect for your repair.

Engine upgrade may wait until i've reached the limits of this one. I'll see in the new year which way i fancy going with it - the parts are sat here waiting.... tempting me, but it does seem to be going great as it is!
 
You must log in or register to reply here.
Back
Top