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Twins Technical Talk Technical Talk for Hinckley Triumph Twins: Bonneville, T100, Speedmaster, America, Thruxton, and Scrambler.

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Old 11-06-2012, 11:19 AM   #11 (permalink)
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Yup, that's what I do.
Full choke to start, run for a minute, back to half way, ride off, fully in after a few hundred yards and goose until happy.
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Old 11-06-2012, 11:24 AM   #12 (permalink)
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^^^That's similar to my start procedure. Full choke and idle for a minute on start up. Half choke and ride away. Choke-in after a mile and keep the throttle goosed at stops until warmed up.

What bothers me is that I had an '05 Bonnie in my possession for a few days that started with choke out and then you could just bang it in after 10 seconds and the bike was fine to ride away. It didn't stumble on acceleration when not warmed up.
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Old 11-06-2012, 11:29 AM   #13 (permalink)
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They do in warm weather, not now it's turned cold.
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Old 11-06-2012, 11:37 AM   #14 (permalink)
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Originally Posted by luckyduck View Post
What bothers me is that I had an '05 Bonnie in my possession for a few days that started with choke out and then you could just bang it in after 10 seconds and the bike was fine to ride away. It didn't stumble on acceleration when not warmed up.
Fact of the matter is, no two bikes are the same. That's what really kind of makes it challenging to tune these bikes. You can have two of the same bikes sitting side by side with the same mods but require different settings of jets and air mixture screws. It would be nice to be able to jet the bike the same as a buddy and expect to achieve the same results. Unfortunately, that isn't going to happen.
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Old 11-06-2012, 11:42 AM   #15 (permalink)
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+1, too many variables.
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Old 11-06-2012, 11:49 AM   #16 (permalink)
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Points taken. I'll be resizing the mains soon along with the pilots. I think, first an oil change and a dyno run is in order to get a good baseline.
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Old 11-06-2012, 11:59 AM   #17 (permalink)
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Try 3 turns out on the mixtures before splashing out on bigger pilots, it might be all it needs. Remember, open silencers tend to pop a bit at the best of times.
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Old 11-06-2012, 07:29 PM   #18 (permalink)
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I fitted the same pipes,jets,air filter and carby adjustments to a mates same year bike and his bike pops and my bike doesn't .
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Old 11-07-2012, 05:24 AM   #19 (permalink)
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Well there ya go, point proven.
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Old 11-07-2012, 11:39 AM   #20 (permalink)
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Mine has always idled badly or not at all when cold. When I take off on a ride, once I push in the choke, I have to keep the throttle goosed until it's thoroughly warmed up, about 15-20 minutes. It doesn't bother me, because it runs very nicely when it warms up, and I don't want to mess with it.
You should try an EFI bike. Mine idles at about 1,000 rpm from the time that I start it. No stumbles or stalls. Runs perfect cold or warm.
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