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Interesting motorcycles, not XS650

George Silk was an accomplished engineer and had a business that built, still builds portable machining tools, primarily for power plant and millwright work, https://silkmachines.com/
Company I worked for for over 20 years contracted him to build a machine for our company used for machining seats in turbine steam chests for power plants back in the 90's. Last time I checked his son still ran the business.
My boss at the time was an avid motorcyclist and went to England to meet George and discuss the project and while there got to see the cycles. I believe that George worked for Scott at the end when they closed.
Yes, all absolutely correct. His company was taken over by another larger company called Furmanite who (at least in the UK) specialised in on site machining. I used them a fair bit over the years. I have no idea now if Furmanite even exist. I'm retired now and spent the last 20 years driving a desk. So I'm out of touch with on site services like machining.
 
Yes, all absolutely correct. His company was taken over by another larger company called Furmanite who (at least in the UK) specialised in on site machining. I used them a fair bit over the years. I have no idea now if Furmanite even exist. I'm retired now and spent the last 20 years driving a desk. So I'm out of touch with on site services like machining.
Furmanite was here in the US as well, it's now TEAM Services
 
https://www.moto-collection.org/blog/motobecane-350-v4c-1947-lespoir-decu/

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At a local bike meet and these 2 were intersting. First one is a BMW K bike, 1993 and the lady rider (in her 60's?) said that she purchased both new in 1993. The bike and side car have both gone 181,000 miles including to Alaska.
Other than routine maint and some shock upgrades, she had primary rebuilt at one point.
Impressive stories out of her.

The Cafe racer is a Honda CB400


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Amazing how many manufactures adopted a big bore 45 degree v twin after the HD vTwin found traction in the US market. The configuration is easily package. Ducati, Moto Guzzi showed how to package a more rational V-Twin. It is an effective power plant but needs rubber mounts to be appealing. Certainly big (heavy) spring saddles made it tolerable but Aspencade, Cavalcade et all showed the world that there was a better way and the 45 degree V-Twin manufacture has been playing catch up since.
 
Amazing how many manufactures adopted a big bore 45 degree v twin after the HD vTwin found traction in the US market. The configuration is easily package. Ducati, Moto Guzzi showed how to package a more rational V-Twin. It is an effective power plant but needs rubber mounts to be appealing. Certainly big (heavy) spring saddles made it tolerable but Aspencade, Cavalcade et all showed the world that there was a better way and the 45 degree V-Twin manufacture has been playing catch up since.
Well, I found this husqvarna interesting as it precedes the introduction of ohv motors by Harley. I have seen claims before that HD knucklehead was revolutionary and a ‘first’.
 
Well, I found this husqvarna interesting as it precedes the introduction of ohv motors by Harley. I have seen claims before that HD knucklehead was revolutionary and a ‘first’.
If you're referring to the OHV aspect of HD's claim, then no, they weren't the first production engine using overhead valves. Buick received a patent on the OHV configuration on Sept 27 1904... exactly 120 years ago today ironically.


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If you're referring to the OHV aspect of HD's claim, then no, they weren't the first production engine using overhead valves. Buick received a patent on the OHV configuration on Sept 27 1904... exactly 120 years ago today ironically.


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Right. I have seen claims that HD was first to use them on motorcycles.
 
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