Here is two more. Hard for me to tell if one has an Atlas engine or not. Alloy tanked one has a turbo on the other side.





Obviously the rear fender is still in mock up stage.

My attempt - turned out great and fun to ride.

http://www.britishchopper.com/articles/ben_zimmermans_1974_norton_850_chopper.php

Coco wrote:Here is two more. Hard for me to tell if one has an Atlas engine or not. Alloy tanked one has a turbo on the other side.


Obviously the rear fender is still in mock up stage.

I bet that's a supercharger.

Allver, your creation sets a new standard in clean radical Norton chopper machine.
God may ride a Commando but I know what the Devil would hop on now.
Glad to have drawn this out of your chopper closet.
oh my oh my on my, I was afraid of this, Norton infection has many
manifestations and I'm susceptible to most of em.
Will snatch its soul to view on my desktop screen.

hobot

swooshdave wrote:

Coco wrote:Here is two more. Hard for me to tell if one has an Atlas engine or not. Alloy tanked one has a turbo on the other side.


Obviously the rear fender is still in mock up stage.

I bet that's a supercharger.

hi swoosh,if its charged its got to be a supercharger,turbos run off the exaust

Thats a huffer (blower).

Easier to explode than a turbo; on a turbo you can adjust the boost. The only way to adjust the boost on a huffer is with the throttle.

The device is a belt drive POSITIVE DISPLACEMENT COMPRESSOR,
not a centrifugal blower like a turbocharger.
Full boost ratio right off idle till Compressor or engine tops out.
Fine for 4 wheel cages and drag strip sprinters but a terror for
canyon twisties. Must be sized and geared to its application
or careful throttle use and high octane. I love it on someone elses wonder.

Loud but nice sounding is more proper in a righteous chopper than just
plain extra power but its excess done right adds to evil attraction.
NO one rides or builds these to race or off road but to feel wild and
free king of the road with all the double takes and recoils surrounding.

hobot

hobot wrote:NO one rides or builds these to race or off road but to feel wild and
free king of the road with all the double takes and recoils surrounding.
hobot

I'll have to agree, the chopper is a complete anti-establishment statement with the added benefit of looking like a hard-on to add the sexual experience which will also agitate most lookers. The ultimate teen rebellion.

If my wife and the neighbors didn't think I went off the deep end, I would have one. I'm not sure they can even put up with my stock '69 'S'.

I will deny ever saying this.

Dave
69S

swooshdave wrote:
I bet that's a supercharger.

Yes it is. My bad, not sure why I typed turbo. I have a pic of the otherside somewhere showing the super charger.

Coco wrote:

swooshdave wrote:
I bet that's a supercharger.

Yes it is. My bad, not sure why I typed turbo. I have a pic of the otherside somewhere showing the super charger.

It says Turbo in the file name and probably in the caption wherever you got the pic too.

I"m into motorcycle power boosters and recognize types at a glance.
People who take and label photo's don't always know what they see.
You can see the two bearing bore bosses in the center of the 2 case webs.
This is for the two impellers to turn 'against each other, not inline like
a twin turbine turbocharger with extra exhaust plumbing.
Should be a blast to feel the extra torque hit even if its dangerous in turns.

Here's quick site I found to view photo's to orient on what the chopper wears.
http://www.edstroementerprises.com/jep/BlowerDesign.htm

hobot

I doubt like heck that the pipes are run down the right side just for aesthetics. I cant help but to wonder what occupies the left side? Blower a 4-71?


Tom

I recognised the charged Norton. Here some more scanned pictures from a dutch magazine. Bike is from around 2003, by swedish masterbuilder Stellan Egeland, his first bike, check the net for his later work (for example 8-valve Hulster). It's a stock Atlas, with 60ci Magnacharger, at a modest 5 psi, with a NEB speedway clutch.
Cheers, Bennie.

Caught by boz this week, just chance passing by on the street.
Gosh what I could do with a long one like this. Barely make 180' turn in walmart parking lot for one.

hobot wrote:Caught by boz this week, just chance passing by on the street.
Gosh what I could do with a long one like this. Barely make 180' turn in walmart parking lot for one.

A few more pics of this on the JJ http://www.jockeyjournal.com/forum/show ... hp?t=71523