200MPH Vintage Class Bike Build

[astek]

What alloy and thickness are you using for your body panels?


Regards, Neil  Tucson, AZ

manta22, .063" 3003

[RidgeRunner]

    Nice work, I'm following with great interest.   

    What planishing methods/tooling are you using?

                 Ed

[astek]

    Nice work, I'm following with great interest.   

    What planishing methods/tooling are you using?

                 Ed

Thanks Ed,  I do the rough shaping on the stump with the wood mallet, I use the slapper to make it smoother and then the wheeling machine. In some areas I use the shrinker.

[panic]

Based on the top speed, you're going to need a really tall 1st gear to have any RPM recovery. I'm not sure of how different the pre-unit vs. unit transmission gears are, but to get the 3-4 shift loss below 16% you'll need the close-ratio 24/22 high gear set.

[Frank06]

Excuse my ignorance, but which event(s) are you planning to run at?

thanks,
Frank

[astek]

Based on the top speed, you're going to need a really tall 1st gear to have any RPM recovery. I'm not sure of how different the pre-unit vs. unit transmission gears are, but to get the 3-4 shift loss below 16% you'll need the close-ratio 24/22 high gear set.

Good point panic,, the std box ratio gap between 3 to 4 is more than the cr,  3rd gear reduction is 1.19:1 for the std.

The close ratio has less reduction and is only 1.09:1 for the 3rd  gear but it starts with first gear 1.69:1 which will be tough to take off whereasthe std box first gear has a 2.44:1 reduction.

The wide ratio first is 2.91:1 but that gap between 3 and 4 is huge. wr 3rd is 1.425:1

The 5 speed later unit has a larger gap between  4th and 5th than the close ratio 4 speed (unit and pre unit 4 speeds have the same ratios)
I have both gearboxes.

Excuse my ignorance, but which event(s) are you planning to run at?

thanks,
Frank

The plan is to run SCTA, AMA and FIM

[thefrenchowl]

Hi,

Panic: Based on the top speed, you're going to need a really tall 1st gear to have any RPM recovery

Wouldn't the ratios be more dependant on where the max torque's revs are?

Patrick

[bones]

Hi astek
Your build is looking REAL NICE
Have you looked at TT Industries in New Zealand for a gearbox?
I don't know if they do a Triumph gearbox, but they do very nice Norton type gearboxes.  4-5 and 6 speed.
A mate has a 5 speed behind a BMW turned sideways   I will know how it works at the end of the month

    Bones

[astek]

Hi astek
Your build is looking REAL NICE
Have you looked at TT Industries in New Zealand for a gearbox?
I don't know if they do a Triumph gearbox, but they do very nice Norton type gearboxes.  4-5 and 6 speed.
A mate has a 5 speed behind a BMW turned sideways   I will know how it works at the end of the month

    Bones

Thanks Bones, I will be using the p/u Triumph gb on this project (no time to change the frame members at this point) but I am looking for alternatives for my other builds. Please let us know how you like the TT Ind. box.

[makr]

Looking good Alp! Can't wait to see this one.

[astek]

Looking good Alp! Can't wait to see this one.

Thanks makr,   it would be great if we can have a photo shoot with the "Alpha" and the "T200" together on the salt.
.
.

Working full speed on the body, here is the chin area, I had to make each side out of three pieces.

[astek]

Making progress

[MattGuzzetta]

My goodness, that is some great work....question, are you gas welding the aluminum?  In the 60's I was able to do work with a master metal shaper, Jack Sutton, and Englishman who came from the aircraft industry and was a amazing guy who used to make his car and aircraft panels with a large cast iron wheel.  He would make his welding rod by making thin strips from the panel he was making and gas welded/brazed the material by dipping the heated section of the strip in borax and then just melted it together, then ran it through the wheel to make the panels and the "weld" work together.  I did try it a couple of times, but it aint easy gas welding aluminum! 

Congrats on your work, very nice!

Matt Guzzetta

[astek]

My goodness, that is some great work....question, are you gas welding the aluminum?  In the 60's I was able to do work with a master metal shaper, Jack Sutton, and Englishman who came from the aircraft industry and was a amazing guy who used to make his car and aircraft panels with a large cast iron wheel.  He would make his welding rod by making thin strips from the panel he was making and gas welded/brazed the material by dipping the heated section of the strip in borax and then just melted it together, then ran it through the wheel to make the panels and the "weld" work together.  I did try it a couple of times, but it aint easy gas welding aluminum! 

Congrats on your work, very nice!

Matt Guzzetta

Thanks Matt,
Yes I'm gas welding aluminum panels, sometimes I tig weld but I prefer gas welding.

[sofadriver]

Alp, what about engine cooling?