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| Twins Technical Talk Technical Talk for Hinckley Triumph Twins: Bonneville, T100, Speedmaster, America, Thruxton, and Scrambler. |
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01-08-2009, 08:57 PM
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#1 (permalink)
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Senior Member
250 Grand Prix Favourite Bike: '07 Creamsickle
Join Date: Nov 2006
Location: Northern California
Posts: 98 Other Motorcycle: '73 Moto Guzzi V7 Sport
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Did Mods, Results Amazing, You Were Right!
I just came back after my first test ride after adding Dunstall mufflers, Polaris bellmouth, and jetting [120 main, 3 turns, 1 shim, 3mm slide hole]. What a difference, the power is better all over the rpm range, but really picks up on top! Before this I never wound it much past 6 grand, but now it pulls strong deep into the red zone. I'm glad that I finally got off the fence and took the plunge. If anyone else is still pondering this one, I say Jump in, the water's fine!
__________________
Pepperoni Bros. Racing - SCTA Landspeed Record Holder 750 M-PG - 750 M-PF
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01-08-2009, 11:11 PM
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#2 (permalink)
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Senior Member
Moto Grand Prix Favourite Bike: '03 T-100 & '08Tiger1050
Join Date: Aug 2004
Location: Stroud, OKlahoma, USA
Posts: 3,196
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My, My...would you believe that ditching the airbox and proper jetting would give you 4 times as much?  Come on over to the dark side and let your creamsickle bonnie breath.
__________________
Larry
2003 T-100 (790cc), NARK, NH Togas, 8100 rpm rev limiter, 158 main jets, 42 pilot jets (less than 1 turn out on pilot screws), stock needles--no shims. 13 A/F ratio from 1100 rpm to 4000 rpm; 12 A/F ratio from 4000 rpm to 6000 rpm; 13 A/F from 6000 rpm to 8100 rpm.:D
2007 Tiger 1050--White:D--SW-Motech crashbars, Skidmarx rear hugger/chain guard, Calsci +7 windscreen.
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01-09-2009, 02:30 PM
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#3 (permalink)
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Senior Member
250 Grand Prix Favourite Bike: '07 Creamsickle
Join Date: Nov 2006
Location: Northern California
Posts: 98 Other Motorcycle: '73 Moto Guzzi V7 Sport
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Quote:
Originally Posted by RedBird
My, My...would you believe that ditching the airbox and proper jetting would give you 4 times as much?  Come on over to the dark side and let your creamsickle bonnie breath.
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Boy, you guys are starting to get to me, I'll have to remain on the fence for that one for a while. Prepping the racebike will soon take over all my time&$, I'm getting my ass kicked out on the salt by a Trident from Canada. Say Larry, did you used to ramble around Oklahoma on a V7 Sport? Have fun, Tom
__________________
Pepperoni Bros. Racing - SCTA Landspeed Record Holder 750 M-PG - 750 M-PF
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01-09-2009, 02:55 PM
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#4 (permalink)
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Senior Member
Powerbike Favourite Bike: Don't Know
Join Date: Jan 2005
Location: Tidewater Virginia
Posts: 367 Other Motorcycle: '08 Silver Thruxton Extra Motorcycle: '09 Speed Triple
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I started out pretty much like you did with Predators,K&N, NH Bellmouth,3 turns, and 130 mains. Felt like a new bike!! Believe me when I tell you, DITCH THE AIRBOX. You will get another big boost and it will really tach out quickly. I've got it bad now. I am getting ready to order the parts for a 904 and I already plan on getting a stroker crank next winter. It's a disease!! I swore I wouldn't do it with this bike.
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01-09-2009, 03:18 PM
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#5 (permalink)
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Senior Member
SuperBike Favourite Bike: 2005 T100
Join Date: Mar 2008
Location: Hudson Valley , N.Y.
Posts: 1,769 Other Motorcycle: 1974 Yamaha YZ
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Good to hear. Are those Dunstall mufflers the cheap $50 ones, like from JC Whitney? How do they sound?
Oh, take out the restrictor plate. It makes a big difference, is free and easy..
__________________
Drunk on the wind in my mouth,
Wringing the handlebar for speed,
Wild to be wreckage forever.
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01-09-2009, 04:16 PM
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#6 (permalink)
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Senior Member
250 Grand Prix Favourite Bike: '07 Creamsickle
Join Date: Nov 2006
Location: Northern California
Posts: 98 Other Motorcycle: '73 Moto Guzzi V7 Sport
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Quote:
Originally Posted by Sal Paradise
Good to hear. Are those Dunstall mufflers the cheap $50 ones, like from JC Whitney? How do they sound?
Oh, take out the restrictor plate. It makes a big difference, is free and easy..
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Nope, these are the real deal, nos, made in old blighty, found them on eBay at Christmastime, so Trumpy got a present! They are fairly loud, but not like Predators, sounds powerful. They are a little louder that I like for the street, so I am scheming on cutting my stockers open and seeing if I can stuff a 3X12" glasspack in there, I'll keep you posted.
__________________
Pepperoni Bros. Racing - SCTA Landspeed Record Holder 750 M-PG - 750 M-PF
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01-09-2009, 04:46 PM
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#7 (permalink)
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Senior Member
SuperBike Favourite Bike: 2005 T100
Join Date: Mar 2008
Location: Hudson Valley , N.Y.
Posts: 1,769 Other Motorcycle: 1974 Yamaha YZ
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I have a set of gutted stockers, they are good... take out the rear baffle and pound a rebar through the other baffles.. no need to remove them, they are thin, just puch through them. When you can see daylight , you are there...
__________________
Drunk on the wind in my mouth,
Wringing the handlebar for speed,
Wild to be wreckage forever.
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01-09-2009, 11:21 PM
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#8 (permalink)
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Senior Member
Moto Grand Prix Favourite Bike: '03 T-100 & '08Tiger1050
Join Date: Aug 2004
Location: Stroud, OKlahoma, USA
Posts: 3,196
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Flyingmerkel,
It wasn't me on the V7 Sport. I rode an old 66 BSA Hornet for many years. I spent 24 years in Salt Lake City, Utah, and rode dirt bikes in the mountains with my kids when they got old enough to ride.
__________________
Larry
2003 T-100 (790cc), NARK, NH Togas, 8100 rpm rev limiter, 158 main jets, 42 pilot jets (less than 1 turn out on pilot screws), stock needles--no shims. 13 A/F ratio from 1100 rpm to 4000 rpm; 12 A/F ratio from 4000 rpm to 6000 rpm; 13 A/F from 6000 rpm to 8100 rpm.:D
2007 Tiger 1050--White:D--SW-Motech crashbars, Skidmarx rear hugger/chain guard, Calsci +7 windscreen.
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