doin my own thing

madass140 · Jun 30, 2012

about 20 yrs ago
http://i1204.photobucket.com/albums/bb4 ... an0008.jpg
http://i1204.photobucket.com/albums/bb4 ... an0009.jpg
http://i1204.photobucket.com/albums/bb4 ... an0010.jpg
Alloy cylinders, Dunstall spec head, auto camchain tensioner, Quaife 5 speed, Phoenix SU, cam? I forget, oil tank, now where is that?

madass140 · Jun 30, 2012

emphasis was on lightness, my own of course, gearbox cradle and front eng mount and top iso motor mount

drones76 · Jun 30, 2012

madass140 said:
about 20 yrs ago

Alloy cylinders, Dunstall spec head, auto camchain tensioner, Quaife 5 speed, Phoenix SU, cam? I forget, oil tank, now where is that?

If you highlight each link and click the img button above the text box, it will encapsulate the line and display the pics. Easier than clicking each picture.

What size tire is on the rear?

ashman · Jun 30, 2012

It looks great, if we all did the same things it wouldn't be fun, not sure about your primary case, but still looks good.

Ashley

grandpaul · Jun 30, 2012

VERY nice. Clean.

mikegray660 · Jun 30, 2012

nice
love the look of the big'ole SU stuffed in there

madass140 · Jun 30, 2012

the SU was new from Phoenix, one of the best things I ever fitted to a Commando, 87mpg , no maintenance, super reliable, my current Norton I purchased a pair of Premier carbs, a vast improvement I'm sure.

cjandme · Jun 30, 2012

Beeee U teeee full !! Thanks for sharing...Did it ride as good as it looks? Cj

madass140 · Jun 30, 2012

I manufactured the Slimline frame for this particular motor, I used to manufacture Slimline frames, so this frame was not a bodged Norton frame, it was specific for this application, Handling was as smooth as silk,
I dont know why but it seemed to handle as good or better than my other stock Featherbeds, maybe it was just the smooth motor that gave me that impression.

Whitworth Ranch · Jun 30, 2012

I am a big fan of SUs. I think it was Thunderbirds in the 1950s that came factory with one. Neat. I would be really interested to ride a Commando with an SU like that. Jim Comstock said somewhere he'd fitted CV carbs from a Honda and that it wasn't good for performance. How did your (I'm guessing 1.75-inch-bore) SU run compared to Amals in terms of power and response?

The Premiers have been great on my stock 850. Very happy with how they perform. Much more like instruments than my sleeved originals.

Great looking bike.
Mark

aceaceca · Jun 30, 2012

I have to say that is absolutely the best looking and engineered bike I have seen in a long time. Thank you for sharing it with us.

Hobot · Jun 30, 2012

Oh yes a real knock out from hubs to fairing! Maddness may have the absolute best SU install ever done to get both better mileage than 175cc's and yet no end to the top end with such big flow capacity. Don't look like that SU would bit in un-cut Commando frame unless mounted to the side like Harley we so love to recoil from. Its lightness would also tend to nullify bog on non accelerator pump SU.

Whitworth Ranch · Jun 30, 2012

Properly set up SUs don't bog.

Hobot · Jun 30, 2012

Properly set up SUs don't bog.

Ok I really don't know much SU but that 'bog' is a relative term in vacuum operated throttle w/o accelerator pump compared to mechanical throttles. But then again I was surprised by my bigger single carb great spunk experience so glad to know a big ole SU can be such a delight all around.

Rohan · Jun 30, 2012

madass140 said:
I manufactured the Slimline frame for this particular motor, I used to manufacture Slimline frames, so this frame was not a bodged Norton frame, it was specific for this application, Handling was as smooth as silk,
I dont know why but it seemed to handle as good or better than my other stock Featherbeds, maybe it was just the smooth motor that gave me that impression.

You need to explain this Don, looks like a stock Commando frame ??

Or are we getting mixed up with your Hinckley-in-Slimline, which was a custom slimline, and the neatest Triton ever ...

madass140 · Jun 30, 2012

you got it Rohan , I messed up. Commando frame is stock except for the oil in frame.

Whitworth Ranch · Jun 30, 2012

hobot said:
Properly set up SUs don't bog.

Click to expand...

Ok I really don't know much SU but that 'bog' is a relative term in vacuum operated throttle w/o accelerator pump compared to mechanical throttles. But then again I was surprised by my bigger single carb great spunk experience so glad to know a big ole SU can be such a delight all around.

The piston is oil-damped. When you open the throttle, the increased signal draws more fuel during the damped transition. They are neat, simple and reliable. I don't have any cars without them!

1.5, 1.75 and 2.0 inches in bore.

doin my own thing

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