Author Topic: What is the fastest MPS or APS/BF 500cc motorcycle record in existence?  (Read 5573 times)

0 Members and 1 Guest are viewing this topic.

Offline RZ350

  • Full Member
  • ***
  • Posts: 66
I've been looking through the record books, it looks like somewhere around 175 MPH.

Is this correct, to anyone's knowledge?
238 MPH at Bonneville

Offline JackD

  • NOBODY'S FOOL
  • Hero Member
  • *****
  • Posts: 4684
The SCTA club record listed for an APS-BF is Steve Alexander  at 175.813 set in 79 with no computer based anything.
While you didn't ask, the APS/BG SCTA club record is faster at 183.003, set in 92 by Scott Guthrie with even fewer parts.
Steve was on a SOHC Honda mechanical injected turbo,  and Scott was on a Yamaha  with an Ersatz (sp) blower and carbs.
I believe Steve ran away and Scott ran legal event gas.
Both with less than 500cc and faster I think than the 650s, but you didn't ask.
Ya gotta bet there is more to that story that hasn't been rediscovered yet.
Your speed may vary. :wink:
"I would rather lose going fast enough to win than win going slow enough to lose."
"That horrible smell is dirty feet being held to the fire"

Offline 1212FBGS

  • Hero Member
  • *****
  • Posts: 2532
    • http://www.motobody.com
what kind of yamaha?

Offline JackD

  • NOBODY'S FOOL
  • Hero Member
  • *****
  • Posts: 4684
The Yamamama was probably "Stretch" from his stable of 2 smoke flat heads.
The blower was provided by FOB Supply as was the fairing.
The rider was an aging fat guy from Florida.
He used some streamlining developments that are not often seen in the sport.
You can get a hint from the picture of him posing in the early days with his HD.
You will notice he was starting the development of his ability to get his ass out of the wind and hide it under the front of his shirt.
It is mostly in the posture.
Steve on the other hand was probably the tallest LSR rider you are likely to see.
His "Monkey on a Football" style is hard to beat unless you make a lot of power.

 
"I would rather lose going fast enough to win than win going slow enough to lose."
"That horrible smell is dirty feet being held to the fire"

Offline JackD

  • NOBODY'S FOOL
  • Hero Member
  • *****
  • Posts: 4684
"Speed secrets are usually right in front of you as you choose to look the other way." (me)  :wink:
"I would rather lose going fast enough to win than win going slow enough to lose."
"That horrible smell is dirty feet being held to the fire"

Offline RZ350

  • Full Member
  • ***
  • Posts: 66
The bike that I'm building will be relatively low tech by todays standards, carbureted, turbocharged, but with quite a bit of boost, and methanol as a fuel, it should make pretty good power....

Ok, let me rephrase that, it will make pretty good power, that part I know! ;)

No computers, just a strong ignition system for electronics, and maybe a MP3 player for entertainment!! ;)

Aerodynamics are still in the planning stages, but it will have a fairing.

The rider is aerodynamic, or at least I will be when I lose a few pounds!!
238 MPH at Bonneville

Offline 1212FBGS

  • Hero Member
  • *****
  • Posts: 2532
    • http://www.motobody.com
jack lets see the pix
kent

Offline JackD

  • NOBODY'S FOOL
  • Hero Member
  • *****
  • Posts: 4684
jack lets see the pix
kent
[/quote
The picture of Scott with the HD is around landracing.com somewhere.
I'll do a slouch and see if it comes up.
"I would rather lose going fast enough to win than win going slow enough to lose."
"That horrible smell is dirty feet being held to the fire"

Offline JackD

  • NOBODY'S FOOL
  • Hero Member
  • *****
  • Posts: 4684
The thermodynamic effciency could stand some improvement though I don't think I would want to.
I would most likely get a smaller rider, better aero, maybe a curl, and go from there.
The riding skills can be learned by a good listener, and the mechanics are simple enough for a good student of the art also.  LOL  :wink:
"I would rather lose going fast enough to win than win going slow enough to lose."
"That horrible smell is dirty feet being held to the fire"

Offline 1212FBGS

  • Hero Member
  • *****
  • Posts: 2532
    • http://www.motobody.com
scott can ya take a pix of it and post or pm me with it
thanks
Kent

Offline JackD

  • NOBODY'S FOOL
  • Hero Member
  • *****
  • Posts: 4684
scott can ya take a pix of it and post or pm me with it
thanks
Kent
The natives are restless.
Perhaps a Virgin sacrifice is indicated. :wink:
"I would rather lose going fast enough to win than win going slow enough to lose."
"That horrible smell is dirty feet being held to the fire"

Offline wolbrink471

  • Full Member
  • ***
  • Posts: 183
    • Wolbrink Race
Re: What is the fastest MPS or APS/BF 500cc motorcycle record in existence?
« Reply #11 on: October 12, 2007, 09:07:50 AM »
Kent Scott and/or Jack

Did this photo ever turn up on the forum?
or maybe in 1212FBGS email??

I would love to see it or at least have a better idea of where to look for it.

Mark
more information about the World's Fastest Dirt Bike at...... www.wolbrinkrace.com

Offline narider

  • Sr. Member
  • ****
  • Posts: 617
  • Self Moderating
    • Twin Jugs Racing
Re: What is the fastest MPS or APS/BF 500cc motorcycle record in existence?
« Reply #12 on: October 12, 2007, 10:21:41 AM »
A virgin in these parts Jack? Tons of us actually, some of us aren't willing to be sacrificed for disdainful or pretentious purposes though(not that this thread aludes to that fact of course).

Here's a close up, a reference and a hint....

The close up verifies a good 4 years of wear and tear.


The reference is proof that endurance and investment gives a good return.


And the hint is that the close up could be a reference #18.

As Jack mentioned there may be a more complete and relevant pics on here for those willing to search, other then that it would be up to the owner to put that out of the more specific of his collection.

I've been concentrating on certain bikes and the abilities and accomplishments of certain people(SG as a very specific example) for awhile now, only to just recently realize that I should be concentrating on the thought proccess of the person and application of the vehicle that has obtained those accomplishments. Vehicles come and go, and some even come back... but the people you respect, look up to or want to learn from should be encouraged by you to share their knowledge(not their secrets) and manner of applying themselves... then their ways(the spirit of the race) will remain whether they are here or not. 

It's not the design that matters, it's the thought and use of the design.
Good luck with your project RZ it sounds like a tall and worthy endeavor,
Todd
« Last Edit: October 12, 2007, 09:49:33 PM by narider »