Author Topic: What flatslides are legal for Pre 85?  (Read 75243 times)

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Offline John Orchard

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What flatslides are legal for Pre 85?
« on: December 21, 2014, 10:11:45 pm »
I'm sorry if this has been raised in past, what flatslide carbs are legal for Pre 85?  I imagine only the Mikuni TM's that came on the RM125/250/465 and Magnum's?
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Offline Tim754

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Re: What flatslides are legal for Pre 85?
« Reply #1 on: December 21, 2014, 10:13:14 pm »
Lectrons.would be also
« Last Edit: December 21, 2014, 10:14:48 pm by Tim754 »
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Offline KTM47

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Re: What flatslides are legal for Pre 85?
« Reply #2 on: December 22, 2014, 10:53:26 am »
My opinion is.

The key to it all is that the class is Pre 85.

GCR 16.15.13.1.  Acceptable for Pre 85 class are machines and COMPONENTS built up to and including the 1984 model.

If there is a carby that was available in 1984 (or earlier) it may also be able to be used.
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Offline John Orchard

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Re: What flatslides are legal for Pre 85?
« Reply #3 on: December 22, 2014, 11:05:31 am »
My opinion is.

The key to it all is that the class is Pre 85.

GCR 16.15.13.1.  Acceptable for Pre 85 class are machines and COMPONENTS built up to and including the 1984 model.

If there is a carby that was available in 1984 (or earlier) it may also be able to be used.


Were any Keihin 'PJ's or 'PWK's available in '84?
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Offline 211

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Re: What flatslides are legal for Pre 85?
« Reply #4 on: December 23, 2014, 11:27:08 pm »
16.15.13.2

Offline John Orchard

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Re: What flatslides are legal for Pre 85?
« Reply #5 on: December 24, 2014, 02:03:36 am »
16.15.13.2


Yep read that, thanks.  Were there any PJ's or PWK's available prior to 1985?
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Offline evo550

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Re: What flatslides are legal for Pre 85?
« Reply #6 on: December 24, 2014, 03:13:06 pm »
16.15.13.2


Yep read that, thanks.  Were there any PJ's or PWK's available prior to 1985?

Nope, pj's in 85, pwk about 89

Offline Nathan S

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Re: What flatslides are legal for Pre 85?
« Reply #7 on: December 24, 2014, 04:35:20 pm »
PWKs came on 1988 KXs, FWIW.
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Offline Lozza

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Re: What flatslides are legal for Pre 85?
« Reply #8 on: December 25, 2014, 08:20:48 pm »
TM38 came out on a 82 RM250 legal in P5 road racing
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Offline Momus

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Re: What flatslides are legal for Pre 85?
« Reply #9 on: January 08, 2015, 01:30:44 pm »
Flat slide Keihin carbs were definitely fitted to Hondas prior to 1985.

This is a shot of one fitted to a 1984 Honda RC500:


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Offline Nathan S

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Re: What flatslides are legal for Pre 85?
« Reply #10 on: January 08, 2015, 01:48:23 pm »
Ah, but is it the same as the production 85 model PJ? It's visibly different to the 86+ PJ.
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Offline John Orchard

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Re: What flatslides are legal for Pre 85?
« Reply #11 on: January 08, 2015, 02:15:54 pm »
Flat slide Keihin carbs were definitely fitted to Hondas prior to 1985.

This is a shot of one fitted to a 1984 Honda RC500:





Was this pic taken in 1984?
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Offline Momus

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Re: What flatslides are legal for Pre 85?
« Reply #12 on: January 08, 2015, 04:01:55 pm »
That photo would be contemporary John, perhaps from a display at the AMA museum.

This one is from 84, Thorpes' RC500:

 

Another recent one:
« Last Edit: January 08, 2015, 04:33:21 pm by Momus »
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Offline Momus

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Re: What flatslides are legal for Pre 85?
« Reply #13 on: January 08, 2015, 04:12:02 pm »
Ah, but is it the same as the production 85 model PJ? It's visibly different to the 86+ PJ.

Nathan, Mikuni VM's are a non issue for eligibility; they come in myriad variations..
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Offline Nathan S

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Re: What flatslides are legal for Pre 85?
« Reply #14 on: January 08, 2015, 05:39:12 pm »
But the rules specifically allow all sorts of round slides.
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