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Author Topic: Eligibility for Pre 90  (Read 1959 times)

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Offline KTM47

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Eligibility for Pre 90
« on: November 18, 2013, 04:55:28 pm »
In the MOMS for the Pre 90 classes in says "Acceptable for Pre 90 class are machines and components built up to and including the 1989 model. The only exception to this rule is where the model remains unaltered after this date."


What I would like to know is what changes were made to the CR 500s after 1989. eg 1990, 1991 etc models.
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Offline Slakewell

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Re: Eligibility for Pre 90
« Reply #1 on: November 18, 2013, 04:58:06 pm »
For a while it got suspension and brake updates from the 250. The basic frame and motor didnt change.
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Offline g465b

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Re: Eligibility for Pre 90
« Reply #2 on: November 18, 2013, 06:37:12 pm »
changes to 90' CR500 from the 89 model,   crank balance ,reshaped reed valve body,extra clutch plate,reshaped head,redesigned rear
hub ,front and rear rims,frame geometry,steeringhead moved back 5mm,fork angle half degree steeper to 27.3 ,trail reduced by 3mm,wider pegs,fork bushing and dampening,stanchion tube shape,chainguide , seat foam and white frame.     g,
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Offline JohnnyO

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Re: Eligibility for Pre 90
« Reply #3 on: November 18, 2013, 07:47:47 pm »
Quote from: g465b on November 18, 2013, 06:37:12 pm
changes to 90' CR500 from the 89 model,   crank balance ,reshaped reed valve body,extra clutch plate,reshaped head,redesigned rear
hub ,front and rear rims,frame geometry,steeringhead moved back 5mm,fork angle half degree steeper to 27.3 ,trail reduced by 3mm,wider pegs,fork bushing and dampening,stanchion tube shape,chainguide , seat foam and white frame.     g,
It's gonna be hard to pick those things at scrutineering..
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Offline VMX Andrew

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Re: Eligibility for Pre 90
« Reply #4 on: November 18, 2013, 08:45:26 pm »
Saw a 90 model in the pits at this years Conondale classic.
The white frame and 500 stickers on the swingarm are a dead giveaway  :)
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Offline 09.0

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Re: Eligibility for Pre 90
« Reply #5 on: November 18, 2013, 09:15:10 pm »
Quote from: VMX Andrew on November 18, 2013, 08:45:26 pm
Saw a 90 model in the pits at this years Conondale classic.
The white frame and 500 stickers on the swingarm are a dead giveaway  :)
Seems you can hide it if you put enough effort in. The worst kept secret is that someone has actually done it up here.
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Offline Davey Crocket

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Re: Eligibility for Pre 90
« Reply #6 on: November 18, 2013, 09:58:13 pm »
To make it easier for scrutineers I think we will be asking for VIN numbers on the entry form for next years Post Classic Nats at Echo Valley. Unfortunately there are those that have to push the boundaries. Having done scrutineering at the recent Classic Nats, you have very little time to look at every bike, it's amazing the bullshit they give you when you ping them. ::)
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Simo63

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Re: Eligibility for Pre 90
« Reply #7 on: November 18, 2013, 10:29:32 pm »
Quote from: Davey Crocket on November 18, 2013, 09:58:13 pm
To make it easier for scrutineers I think we will be asking for VIN numbers on the entry form for next years Post Classic Nats at Echo Valley. Unfortunately there are those that have to push the boundaries. Having done scrutineering at the recent Classic Nats, you have very little time to look at every bike, it's amazing the bullshit they give you when you ping them. ::)

Finally .. you come up with a bloody good idea :)

I think your suggestion has real merit as it would help stop the cheaters (but not eliminate them) and also sort out those complete idiots that genuinely show up with the wrong model bike :)

And it shouldn't be that hard to implement although it would create some extra work for the organisers and we all know they need that like a hole in the head  :-\
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