Author Topic: Wacky inventions  (Read 54094 times)

0 Members and 2 Guests are viewing this topic.

oldfart

  • Guest
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

  • A-Grade
  • ****
  • Posts: 402
    • View Profile
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

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

Offline jerry

  • Legend
  • *****
  • Posts: 1845
  • Beware the work ethic of the evil
    • View Profile
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

  • Legend
  • *****
  • Posts: 1982
  • #789 MX125a BMCC Brisbane
    • View Profile
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

  • Legend
  • *****
  • Posts: 956
  • Gladstone, Queensland Australia
    • View Profile
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

  • A-Grade
  • ****
  • Posts: 402
    • View Profile
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

  • Legend
  • *****
  • Posts: 930
  • Sunshine Coast
    • View Profile
Re: Wacky inventions
« Reply #127 on: August 24, 2009, 09:08:03 pm »
What do you think this does?  High-low ratio maybe?



The Swvm though the tree's! http://youtu.be/4h6BbasT16I
Metalink Conondale vinduro sprint. May 19/20 2018    
www.metalink.net.au  Bike trailers & Canopies

mx250

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


Offline GMC

  • Legend
  • *****
  • Posts: 3693
  • Broadford, Vic
    • View Profile
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



G.M.C.  Bringing the past into the future

Shock horror, its here at last...
www.geoffmorrisconcepts.com

For the latest in GMC news...
http://www.geoffmorrisconcepts.com/8/news/

Offline EML

  • Legend
  • *****
  • Posts: 3110
  • Ride the World before it Rides You
    • View Profile
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

  • Guest
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

  • Superstar
  • ******
  • Posts: 7275
  • HEAVEN #818
    • View Profile
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

  • Guest
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

  • Superstar
  • ******
  • Posts: 7275
  • HEAVEN #818
    • View Profile
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.