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  #1  
Old 9th July 2022
wrkdWS6 wrkdWS6 is offline
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Default First time running bike in the 1/4

Buddy and I ran our Sportsters for the first time in the 1/4. Previously did an outing at a sub 1/8th mile track. Bike is a basic 1275 setup with 106rwhp. It weighed in at 535 lbs and track was about +2500 DA. My best ET was 11.80, best trap speed was 117. My 60 foots averaged 2.0 A regear is in order as I either had to shift into 5th right before the traps or ride the limiter. I think there’s lots more in it, mainly me. I kept giving it more and more on the launch but it wasn’t translating to a better 60. It lightly spun 1 or 2 passes and bogged a few. Bike has no tach or anything, is a ride it an hour there, race it, ride it an hour home kinda deal. Was running street tires with 30 psi out back. Wondering what launch techniques or suggestions you have?

I’m in the background, my buddy in the foreground.

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  #2  
Old 9th July 2022
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ChinCactus ChinCactus is offline
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Looks like fun. Never raced personally but many here have. Hopefully they will chime in with suggestions.
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  #3  
Old 9th July 2022
Tomcatt Tomcatt is offline
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Clear some space in your PM's inbox.
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  #4  
Old 9th July 2022
wrkdWS6 wrkdWS6 is offline
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Quote:
Originally Posted by Tomcatt View Post
Clear some space in your PM's inbox.
I did the other day. Dunno what’s going on unless the message limit was decreased from 25 to something else?
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  #5  
Old 9th July 2022
Tomcatt Tomcatt is offline
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This is what I get:
wrkdWS6 has exceeded their stored private messages quota and cannot accept further messages until they clear some space.

It's total stored messages (sent also) not just what's in your inbox.

Last edited by Tomcatt; 9th July 2022 at 15:06..
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  #6  
Old 9th July 2022
wrkdWS6 wrkdWS6 is offline
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Fixed, had to get the total message count under 10.

Edit: attn Mods, accidentally put this in wrong sub-forum, can you please bump it over to the Sportster drag racing area?
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  #7  
Old 9th July 2022
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rocketnorton rocketnorton is offline
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lower psi in rear, mid/low 20s
maybe some struts you could put on @ track
or stiffest preload on shocks while yer there

not a racer by any means, but made a few tenths diff on couple of nortons yrs ago
500-16 rubber, not stock 19
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Last edited by rocketnorton; 9th July 2022 at 18:53..
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  #8  
Old 11th July 2022
wrkdWS6 wrkdWS6 is offline
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Join Date: Nov 2010
Location: Skippack, PA
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Sportster/Buell Model: 1200C
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Sportster/Buell Model #2: XLCH Drag Bike
Sportster/Buell Year #2: '63
Other Motorcycle Model: XLH
Other Motorcycle Year: ‘79
Reputation: 517841
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Default

Quote:
Originally Posted by rocketnorton View Post
lower psi in rear, mid/low 20s
maybe some struts you could put on @ track
or stiffest preload on shocks while yer there

not a racer by any means, but made a few tenths diff on couple of nortons yrs ago
500-16 rubber, not stock 19
thank you, will try those suggestions out.
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