Author Topic: Wacky inventions  (Read 54996 times)

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oldfart

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Re: Wacky inventions
« Reply #120 on: August 21, 2009, 04:58:54 pm »
all forces are aimed at a single point  " head stem  "   

Like a poggo stick ....    jump up and down and forces are generated upwards , aim slighty forward and it all changes to forward motion
Ask yourself why front forks are not up and down       part of it is to do with rake

Offline pirie593

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Re: Wacky inventions
« Reply #121 on: August 21, 2009, 06:45:44 pm »
So are you telling me there is a Newton's 4th Law of Motion ????

oldfart

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Re: Wacky inventions
« Reply #122 on: August 21, 2009, 06:49:37 pm »
They where only theorys

Offline jerry

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HANDLEBARS
« Reply #123 on: August 22, 2009, 04:51:43 pm »
I remember going out to Wallan to see Gaston Rahier and a few other Internationals ride in about 1975. Apart from Gastons incredibly trick Suzuki what a lot of people noticed was how far angled back he had his bars. Lo and behold  everybody started angling their bars back here in the local scene. They would have you believe it was the latest handling set up. Probably so keen to look like Gaston that they did'nt realise he was about 5 foot tall and had to have the bars angled back so he could reach them. Classic case of function following form!

Offline vandy010

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Re: Wacky inventions
« Reply #124 on: August 22, 2009, 06:05:12 pm »
same thing happened when Ricky Carmichael was on the quakka's.
he ran his bars quite high and it seemed every man and his dog down at the local track was rotating thier bars ridiculously forward.
how wierd is that?
"flat bickie"

Offline David Lahey

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Re: Wacky inventions
« Reply #125 on: August 22, 2009, 06:29:50 pm »
Where a shockie points - whether twinshock or monoshock, linkage or non-linkage, is totally irrelevant to the way the forces generated by the wheel contacting the ground act on the centre of mass of the bike.
Telescopic forks lean back to provide rake and trail so the steering self-centres. If the required geometry is achieved by using some other means (like leading link suspension), the damping and springing devices can be set at any angle.
previous pseudonym feetupfun

Offline pirie593

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Re: Wacky inventions
« Reply #126 on: August 23, 2009, 06:59:36 pm »
Thank you, feetupfun...but it took me a while to be convinced ;)

Offline NSR

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Re: Wacky inventions
« Reply #127 on: August 24, 2009, 09:08:03 pm »
What do you think this does?  High-low ratio maybe?



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mx250

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Re: Wacky inventions
« Reply #128 on: August 24, 2009, 09:33:05 pm »
Seemed like a good idea at the time............ ::) :P


Offline GMC

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Re: Wacky inventions
« Reply #129 on: May 04, 2010, 09:38:56 pm »
While this looks weird some of the theories actually make a bit of sense.
Fortunately no highly regarded bikes were harmed for this prototype ;D



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Offline EML

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Re: Wacky inventions
« Reply #130 on: May 05, 2010, 10:58:00 am »
NSR, I think that contraption on the Simpson is actually the clutch as a cassette. Ford used something similar on their Focus wrc cars on the rear of the gearbox. Very easy to change as a complete unit if it gives trouble-you could carry one in your bumbag almost- which would be very handy on a little screamer like that.

mx250

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Re: Wacky inventions
« Reply #131 on: May 05, 2010, 11:15:42 am »

Fortunately no highly regarded bikes were harmed for this prototype ;D

Wash ya mouth out - that's a Monty >:(

Offline Nathan S

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Re: Wacky inventions
« Reply #132 on: May 06, 2010, 12:06:05 am »
And a Rickman Monty at that - so I assume that Mr GMC wasn't serious on that point...
The good thing about telling the truth is that you don't have to remember what you said.

mx250

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Re: Wacky inventions
« Reply #133 on: May 06, 2010, 12:25:08 am »
And a Rickman Monty at that -
Is it? The only Rickman Monty I know was for the side port motor. This is a centre port. (I know what the article says and I know what the pixie says.)

Offline Nathan S

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Re: Wacky inventions
« Reply #134 on: May 06, 2010, 05:01:56 am »
I figured that it clearly wasn't an otherwise stock production Rickman Monty.
The good thing about telling the truth is that you don't have to remember what you said.