Another Early Pan motor Build ...

[Dragstews]

Anybody care to field this question, feel free to do so....
I done maybe 20 of these over the years....
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About the flywheels that came out of this motor...

I have listed them as a package deal in the CLASSIFIEDS

[TriNortchopz]

Gonna guess...you mention it may have had a primary belt, so that would mean the crankcase breather / mist tube would have gone into the primary to provide some chain lubrication; with the change to belt, that breather port was shut off and a new one was installed at that rear case location - not sure what, if anything, was there before though

aha...
AKA, 'PukeTube'
Thread: 58 panhead "puke tube" alteration

http://www.chopcult.com/forum/showthread.php?t=51055

[Dragstews]

Not sure what, if anything, was there before though

Just a welsh plug ....

But that sums it up pretty good.... Thanks Tri ....
(Extra piece of raisin pie in your pay check)

[TriNortchopz]

About the flywheels that came out of this motor...

Was readin' that with a change to the larger crankpin on the 80" wheels, you can offset the new bore by 1/8" to gain an extra 1/4" stoke, for a 86" engine...any way to see that without disassembly?

[Dragstews]

What Tri is saying above is:

The U's has a small crank pin... In 41 the birth of the FL models came on line sporting a much larger crank-pin..
In the hands of a good machinist, the tapers on the U's wheels can be enlarged to the FL's pin dimensions, by doing a off-set going to the FL pin, a gain in stroke can be a accomplish....

[TriNortchopz]

Ya, that's it...and I thought about it, easy to check is simply by measuring it; I was thinking at first to measure the end of the crankpin, but you would need to know those dimensions - instead, could just measure the stroke before pulling the cylinders,or measure the crankpin throw. By knowing the specs of the stock stroke,you would know if it had been stroked that extra 1/8".
'37 - '48U, 74" and 80" stock stroke is 4-9/32" (4.28125"), with flywheels measuring 8.28125" diameter. The larger tapered crankpin is 1-1/4".

82" flywheels (4-3/8" stroke,with 3-7/16" bore = 1343.7cc ) can also be built; this is the limit of the 1350cc Bonneville land speed record class.

[flatman]

Because the wheels are a smaller OD I assume the scapers were built up?

[JeremyL]

I think I would have just pulled the 6 screws out and lifted the top half of the crate off......

[Dragstews]

Seems that the super rare Hot-Rod (Of the day) U crank has found a new home in Canada, will be spinning in a 47 Knuck motor...

Now that motor will have a bundle of antiquity, historical and vintage parts in it...
Hahaha ... Well, the crank is getting back to the era that it came from being 47 was next to the last year the U's was made...

[Dragstews]

I think I would have just pulled the 6 screws out and lifted the top half of the crate off......

Being they was all the way down at floor level, I didn't see em until I got to the last panel to rip off...
Then it fu*ken dawn on me ... WTF ..Lol ... Didn't come with no instructions (For Fat People), ya know !!

But I screwed it back together ... Good as new again ...

.../// https://youtu.be/2A-I5J19GKI \\\...

I will be labeling it " DRACULAS Secret Box "

[TriNortchopz]

Because the wheels are a smaller OD I assume the scapers were built up?

That info is from Victory Library; here is what they say about scrapers; nothing about build up:

"The flywheels are 8.28125” outside diameter which will safely clear the case scraper in all U-Series motors."

http://victorylibrary.com/stroker79.htm

"The flywheels are 8¼” (8.25”) outside diameter which will safely clear the case scraper in all U-Series motors, but give slightly excessive scraper clearance in 1940-54 OHV engines, and may require scraper machining in 1936-39 EL engines."

http://victorylibrary.com/stroker82.htm

[JeremyL]

I know this modern crate technology can be tough on you Old Timers. Hahaha! I'm just teasing. I'm so happy you are working on this. Check out what Ive sold off so far to pay for this. I almost cried!

[Dragstews]

^^ .... Holy Mass Murder .... Batman ....

Trump could use you at the border ... !!!

[JeremyL]

Here is a pic of the man that built the bike, taken early 80's. Shown here at Peak Badass, bike show trophies and 357 on hip.

[Tattooo]

Here is a pic of the man that built the bike, taken early 80's. Shown here at Peak Badass, bike show trophies and 357 on hip.

[ATTACH=CONFIG]90234[/ATTACH]

I bet that was one fine running bike..... Looking at him I'm not surprised that he would build a bike like he did....