Rode my '20 Sport Model out to a couple Harley parties a couple weeks ago. Freaked the local dealer and HOG club out when I rode it in. Of course most didn't have a clue as to what is was, let it drip some oil by the service dept for a while and then split.
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My suspicion is that during WWI Arthur Davidson went over to England and saw how successful the Brit motorcycle industry was and brought the idea for the Sport Model home with him. Another attempt to put the masses on 2 wheels.
Was there a Douglas opposed twin or other Brit opposed twin of similar design that already existed?
I think there was but am too lazy to look it up and verify it....
PS: I really like the Sport's big chainguard. I had aftermarket Dixie big enclosed guards on my Panheads and they helped a lot.
The smooth silent operation and clean enclosed chain show the philosophy behind the Sport Model was to civilize the motorcycle. Compared to the modern generation of headache producing barking Harleys that would have the Founders spinning in their graves and I doubt they would approve of so much noise.
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I think Douglass was one of if not the first horizonal twin and with probably the inspiration for the Sport model and refined to make the BMW. I also think the Sport model was way ahead of it's time like the HD Cafe Racer. But you know how us Yanks like the big displacement motors with it's stump pulling power. Who cares if it vibrate a LITTLE........
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Originally posted by LouieMCman
I think Douglass was one of if not the first horizonal twin and with probably the inspiration for the Sport model and refined to make the BMW. I also think the Sport model was way ahead of it's time like the HD Cafe Racer. But you know how us Yanks like the big displacement motors with it's stump pulling power. Who cares if it vibrate a LITTLE........
You would think that the rear cylinder would be prone to overheating under severe conditions, but I don't know that it was. Any clue on that? Hap Scherer rode the bejeezus out of a Sport Model thru the west and set records and it didn't seem to conk out on him.
I checked the Douglas (MC Panorama. 1974. p.54): "As with every Douglas that emanated from the Bristol factory, est. in 1909 when the firm began making machines fitted with the Barter design of horizontally-opposed engine..."
I don't know who Barter was, but he seems to have invented the Douglas flat-twin. And with a beginning way back in 1909, there's little doubt that Arthur or someone from H-D was aware of it, probably first hand during a trip over there during WWI.
One test ride would show what a great smooth civilized bike the opposed twin could be so let's make one.
Didn't Indian make one too?
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