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d00d
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08-04-2019, 07:06 PM
1

the penny farthing

I love innovation and this is a beaut ..

the penny farthing


The technically minded amongst us will realise the brilliance of this.
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08-04-2019, 09:58 PM
2

Re: the penny farthing

That is brilliant, d00d, I would love to have one!
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08-04-2019, 10:03 PM
3

Re: the penny farthing

Originally Posted by d00d ->
I love innovation and this is a beaut ..

the penny farthing


The technically minded amongst us will realise the brilliance of this.
Hi dOOd, l culd'nt see what materials its made of, but the
design is extremely original, the spokeless wheels particularly
need a bit of thought, one thing though, is that a schrader
valve l spotted on the solid tyres?

Best Regards Donkeyman!
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08-04-2019, 10:18 PM
4

Re: the penny farthing

Nice but a tuppence ha'penny really, electric bikes won't really catch on until the ludicrous 15mph limit is removed.
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08-04-2019, 10:41 PM
5

Re: the penny farthing

Great looking design. Spokeless wheels? How does that work?

Presumably there are a load of bearings inside the only part that contacts the wheel.

Pretty innovative.
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08-04-2019, 11:19 PM
6

Re: the penny farthing

Originally Posted by Realist ->
Great looking design. Spokeless wheels? How does that work?

Presumably there are a load of bearings inside the only part that contacts the wheel.

Pretty innovative.
This is what occurred to me.

I can understand that the wheels can be strong enough to support the weight of bike and rider without buckling, despite lacking hubs and spokes, but the only way I can see of bearings hidden in what one would call the mudguards working is that they run against the solid tyres or the metal wheels.

If the latter, surely the tyres must be narrower than the wheels. In any event, not only must the bearings support the weight on the wheels, but they must also impart a sideways force against the wheel.

I'm not sure, then, how much wear there must be in order to ensure the wheel is held sufficiently tightly by the 'mudguard' to prevent unwanted sideways movement.

I'd be very interested to have a good look at one in 'real life'.
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09-04-2019, 06:28 AM
7

Re: the penny farthing

Originally Posted by d00d ->
I love innovation and this is a beaut ..

the penny farthing


The technically minded amongst us will realise the brilliance of this.
I am technically minded. An electrical engineer to boot. And I don't. Contradiction comes to mind.
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09-04-2019, 09:38 AM
8

Re: the penny farthing

Well it looks cool!

How it actually works, and the materials used is top secret.

The way I see it is .....

Watch this animation http://www.cyclopic.co.uk/

The grey bits are rigid frame, blue/black rotate. (?)

On cornering it bends at that central folding point.

Could be good.
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09-04-2019, 10:09 AM
9

Re: the penny farthing

I think it is a very clever design particularly how it all folds in on itself which is a good reason for having a front wheel bigger than the back. I could never understand the reason on the original penny farthing.
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09-04-2019, 10:19 AM
10

Re: the penny farthing

Originally Posted by Longdogs ->
I think it is a very clever design particularly how it all folds in on itself which is a good reason for having a front wheel bigger than the back. I could never understand the reason on the original penny farthing.
Before gears were invented, one revolution of the pedal meant one revolution of the wheel. The bigger the wheel the further you travelled.

The size of the other wheel was unimportant, so may as well be small.
 
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