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  #21  
Old 4th June 2018
Merch131ho Merch131ho is offline
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wheels are 17 inch front and back, tyres are Dunlop Sportmax Mutant, 150 on the back, 120 on the front. Beyond 150 you get issues with chain clearance.
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  #22  
Old 7th June 2018
madlim madlim is offline
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Thanks mate! Really dig the look on those wheels, do you think you can find out the width of the rims as well? I'm starting to think I might change to 17" as well!
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  #23  
Old 7th June 2018
Merch131ho Merch131ho is offline
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Front wheel is from a KTM and is a 17 x 4.25 rim, while the back uses the OE hub, but laced to a 17 x 5 rim. It used to have a 160 knobbly tire fitted, but the tyre jut hit the chain. With an offset sprocket it could've worked, but I think 150 is the max you can fit with a chain without an offset kit.
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  #24  
Old 8th June 2018
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Davo_137 Davo_137 is offline
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Looks really good.

Why do they want low end torque over top end HP? It looks like it what’s to go fast
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  #25  
Old 8th June 2018
Merch131ho Merch131ho is offline
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Its not my bike, but for the style of bike and its intended use, lots of smooth low end torque is preferred over a big top end... which usually comes with the cost of a loss of HP and smoothness at low revs.

BTW it still hasn't been on the dyno as the dyno operator is racing at the IOM TT this week, fingers crossed he makes it home in one piece, and once he's caught up on the backlog of work, the XL will be going on the Dyno at last.
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  #26  
Old 15th June 2018
Merch131ho Merch131ho is offline
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My mates XL1250 finally had its first run on the dyno today. Its running way too rich, and with standard cams and rejetted OE carb, we weren't expecting huge power numbers. Although it was built for low end torque over top end HP in any case.

Despite running rich, it made decent power, with a smooth graph, no sudden dips in HP as the revs climbed. With leaner jetting should make more a bit more HP.

What did it make? You'll have to watch it running on the dyno to find out ..
https://youtu.be/LmodhLHAK7c
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  #27  
Old 3rd December 2018
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scooterbe883 scooterbe883 is offline
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very well done!
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  #28  
Old 6th December 2018
jkinkade jkinkade is offline
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Quote:
Originally Posted by Merch131ho View Post
My mates XL1250 finally had its first run on the dyno today. Its running way too rich, and with standard cams and rejetted OE carb, we weren't expecting huge power numbers. Although it was built for low end torque over top end HP in any case.

Despite running rich, it made decent power, with a smooth graph, no sudden dips in HP as the revs climbed. With leaner jetting should make more a bit more HP.

What did it make? You'll have to watch it running on the dyno to find out ..
https://youtu.be/LmodhLHAK7c
Why did not they lean carb off after two run's on Dyno? like if I saw mine that rich after two pull's on dyno, I would stop to change jets then test again, also 15 seconds wide open too long, I like to have my dyno run timed and go for a tune that makes HP & TQ quick ( more fun.) those pipes would not help.
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  #29  
Old 7th December 2018
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DéDé DéDé is offline
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very nice bike
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  #30  
Old 7th December 2018
Merch131ho Merch131ho is offline
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Quote:
Originally Posted by jkinkade View Post
Why did not they lean carb off after two run's on Dyno? like if I saw mine that rich after two pull's on dyno, I would stop to change jets then test again, also 15 seconds wide open too long, I like to have my dyno run timed and go for a tune that makes HP & TQ quick ( more fun.) those pipes would not help.
They didn't have the appropriate jets to hand and had to wait for them to be ordered. These days probably 95% of the bikes they work on are injected, so they don't tend to stock a huge range of jets for different makes of carbs. The bikes owner also owns the dyno shop, so dyno time isn't an issue. He knows the pipe isn't ideal, but admits he went for style over performance with the pipes. Perhaps different pipes will be fitted at some point if he decides the engine power isn't enough. I haven't seen the latest dyno readout but I'm told in now makes mid 90s HP and ditto torque. It only weighs 400lb.
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