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Post by kickstandman on Jan 4, 2016 4:28:38 GMT
www.oldspokeshome.com/bicycle-museumA nice bike-shop website, I see a few bike shops have their "museums" but this one has a lot of bikes and a lot of old ones, I guess New England has a bit of that.
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Jem
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Post by Jem on Jan 4, 2016 6:25:33 GMT
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Post by oldroadietehachapi on Jan 4, 2016 6:27:00 GMT
Great site and a nice collection. On the west coast we have The Marin Museum of Bicycling, which is an interesting (mostly mountain bike and klunker history) kind of place. mmbhof.org/Jim |
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Jem
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Post by Jem on Jan 4, 2016 6:48:20 GMT
Jim - I may have asked before on here, but have you seen the film 'Klunkerz"?
Very good and worth seeking out.
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Post by oldroadietehachapi on Jan 4, 2016 10:16:03 GMT
I have a copy. I even have klunker project; it is based om a 1951 Shelby. I like the Shelby frames as they had seamless tubing and a funny kind of internal lug. The joins where dipped brazed, and then fillet brazed. the Shelby frame is also about a pound lighter than the Schwinn DX frame, which was the most common frame used for klunkers.
Jim
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Post by sprockit on Jan 4, 2016 23:21:33 GMT
This is listed as 1899. It looks amazing. I can only guess at how the chainless system works.(?) Jim, It's shaft drive - as used on BMW and some other makes and models of motorcycles. I enquired once at my LBS and 'arry said that it's all been done before and that shaft driven bicycles fell out of favour because chain drive is slightly more efficient and easier to set up and work on. Here's the modern day version of the Old Spokes bike's drive system:- www.dynamicbicycles.com/chainless/ |
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Post by robt on Jan 4, 2016 23:59:14 GMT
The "King Chainless" takes a different approach to doing away with the chain - a two speed (plus neutral) gearbox at the bottom bracket and cranks at each end of the reciprocating drive rod (moving backwards & forwards, rather than rotating), as seen on steam engine wheels. A bit of a bugger to set up to run as smoothly as a chain, I'll wager. All fascinating stuff, thanks, KSM. Good to see a couple of Raleigh Records there, too. I must show my friend Simon ( see old thread). Their 'bikes for sale' include a Terry Symmetry, designed to take a smaller (650?) front wheel but retain a classic horizontal top tube. Just the job for some of our chums who wear their backsides nearer to the ground than others? |
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Post by kickstandman on Feb 12, 2016 11:02:18 GMT
A modern chainless bike, Minneapolis CL, "Magerl Fendt SKS Super Sport Shaft Drive Chainless Bicycle - $600 (Rogers)", maybe not much to see here but it was related so I thought I'd post, also see in the first picture, between the seat tube and seat stays, some German bikes built in a little tool pouch right there into the bike itself, black in the picture below behind the rack screw-on plate, also, I think a lock on the left chain stay:    Made in Germany with what looks like the dynamo power is from the hubs I'd say along with an SA or other hub in the rear. minneapolis.craigslist.org/hnp/bik/5420363274.html |
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Post by Jem on Feb 12, 2016 17:12:53 GMT
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Post by robt on Feb 12, 2016 20:53:19 GMT
Jem, Bevel gears are a way of allowing (the torque of) a rotating shaft to 'turn a corner', so the rotation at the cranks can be 'sent' down a rotating drive shaft running at 90degrees to it, then turned through 90 degrees again to turn the wheel. In a conventional bike, the rotation at the crank is transferred to rotation in the same plane at the back wheel by the movement of the chain Hope this helps, and apologies if you knew that all along. |
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Post by Jem on Feb 12, 2016 21:02:05 GMT
Jem, Bevel gears are a way of allowing (the torque of) a rotating shaft to 'turn a corner', so the rotation at the cranks can be 'sent' down a rotating drive shaft running at 90degrees to it, then turned through 90 degrees again to turn the wheel. In a conventional bike, the rotation at the crank is transferred to rotation in the same plane at the back wheel by the movement of the chain Hope this helps, and apologies if you knew that all along. No, thanks for that. I didn't know much at all and that was a good intro to the principles. |
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