They're custom builds. The ones in the photos are combinations of older and newer Sportster parts.
I found this video. A couple of riders in that video are very fast for a Harley weight ride.
100 mph, in the dirt, with no brakes allowed.
I tried it on a 2 stroke dirt bike on a old racing flat track at about 50-65 mph and it was one heck'uva ride. There where many rocks on the track because it had not been maintained for decades but I gave it a go anyway. I have a lot of respect for flat track racers.100 mph, in the dirt, with no brakes allowed.
You are correct, Sal1950.
It’s been 100/38 here the last couple of weeks. I had a 8 watt class A on for an hour biasing it at ten at night. It noticeably warmed the room.
Wowzer. That kind of temperature where I live would set records. We have not seen over ~23C so far this year and at night it goes down to ~11-12C. I like it this way. Not into roasting myself under the sun...lol
This is among the best, if not the best dual purpose Harley Davidson builds I've seen:
Here's my college bike. Cougar frame from Terry Dolan, the famous Liverpool plumber and groupset bought bit by bit as a student, put together by Dauphine Sport on Boxhill. I ride a more modern Raleigh or Reid machine these days, shimano-equipped with carbon seat stays and forks. It rides pretty much the same when your my age. The roads in NZ are perhaps quieter in the countryside, but I still have the odd close call.What also doesn't appeal is the sharp edge on the web between the crank arm and the chainring spider, which is a stress riser that will eventually root a crack and start a fatigue failure process. That was a true design flaw in the Campy cranks. I have them on the bike I rode in college, but I don't put big miles on them and I keep an eye out for that spot.
Later designs that incorporate one of the spider arms into the crank and provide a nice radius on those edges are far stronger and more durable without any additional weight.
And the Campy-style headset bearings are, like all headset bearings that use balls, subject to fore-and-aft vibrations that pump out the lubricant and then dig holes in the races. Stronglight's Delta was the true solution--tapered roller bearings.
But there's just nothing that captures the lust factor of a high-end groupset from back when we were poor college students.
Rick "Campy NR side-pull brakes are the most beautiful ever" Denney
Very nice.
Yes, he would have.They're not terribly different from the Sportsters Evil Knievel used to build for jumping.
He'd have been thrilled to have that amount of suspension travel.
Carducci Dual Sport (SC3 Gera Baja, a variation of the Ghost Town Bike [SC3 Adventure] being produced now throughThey're not terribly different from the Sportsters Evil Knievel used to build for jumping.
He'd have been thrilled to have that amount of suspension travel.
Those hubs look like Campy Gran Sport high-flange hubs. The frame is classic British Simplified with what look like Prugnat SL lugs, while the one shown by Count Arthur has the classic British Baroque Nervex lugs. Mine is more like yours--simplified to the point of being minimalist by 70's standards, but still elegant and beautiful. I particularly like the way Bill attached the seat stays to the ears on the seatpost clamp:
My 1977 H-D XLCR with my 2 nephews Kyle and Ryan.Yes, he would have.
From the Smithsonian:
Knievel rode this motorcycle during some of his most spectacular jumps. By carefully coordinating his angle, thrust, and speed, which reached 90 to 100 miles per hour at takeoff, he remained in the air for as far as 165 feet. He chose (and customized) this motorcycle, a 1972 Harley-Davidson XR-750, because it was a light, dependable racing machine. Made of steel, aluminum, and fiberglass, it weighs approximately 300 pounds.
In the picture there's a mix of nuovo record large flange (with newer MA2 rim) on the back and classic record hub GP4 rim on the front. I was in England for just a few days and dug the machine out of the attic. When a friend came over to go for a ride I discovered the rear wheel didn't have any glue on the tub, so went for safety first. This rear wheel had been built 25+years ago, including tyre, but this was its first ride. Even my mate was astonished. The bottom bracket on this bike was very narrow and quite flexible compared with modern machines. I come from the Lake District, but even there a 42x19 bottom gear was considered adequate. I think it was a 21 tooth "granny gear" on this wheel. I've heard them called hero gears by youngsters, but that's, of course, what everyone rode back then.Those hubs look like Campy Gran Sport high-flange hubs. The frame is classic British Simplified with what look like Prugnat SL lugs, while the one shown by Count Arthur has the classic British Baroque Nervex lugs. Mine is more like yours--simplified to the point of being minimalist by 70's standards, but still elegant and beautiful. I particularly like the way Bill attached the seat stays to the ears on the seatpost clamp:
Rick "rides on dedicated paths and back roads these days" Denney
Nice pic and those exhaust pipes look like they have been pretty hot.My 1977 H-D XLCR with my 2 nephews Kyle and Ryan.
I used to take them one at a time and sit them on the tank in front of me and we would ride everywhere.
They probably had over 1,000 miles each on them before they 10 yo.
They're now mid 30s and of course ride H-D, it's in their blood.
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I like the X style exhaust crossover. In theory it adds torque while not hurting horsepower. That has also been my experience with X-Pipe exhaust crossover's on everything with even amounts of cylinder banks 2 cyl. to V-8's (haven't played with V10's & more, so don't know). This type of crossover also changes the engine tone (personally, I like the sound).My 1977 H-D XLCR with my 2 nephews Kyle and Ryan.
I used to take them one at a time and sit them on the tank in front of me and we would ride everywhere.
They probably had over 1,000 miles each on them before they 10 yo.
They're now mid 30s and of course ride H-D, it's in their blood.
View attachment 213399
