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  #21  
Old 27th November 2021
Iron Mike Iron Mike is offline
Senior Custom Bike Builder
 
Join Date: Dec 2014
Location: Phoenix
Posts: 2,739
Sportster/Buell Model: xlch
Sportster/Buell Year: 1964
Sportster/Buell Model #2: XLCH IR EFI
Sportster/Buell Year #2: 1971
Other Motorcycle Model: BMW K1200RS
Other Motorcycle Year: 2001
Reputation: 2375283
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I’m sure you’ve seen this?

http://www.useasydocs.com/details/dualspark.htm
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  #22  
Old 27th November 2021
gl90hog gl90hog is offline
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Join Date: Mar 2009
Posts: 23
Sportster/Buell Model: XLH 883
Sportster/Buell Year: 2000
Reputation: 10
gl90hog is an unknown quantity at this point
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Sure did! But I am trying to work with my hardware. I actually can, MS can use dual input from existing twin Tec (working as a sensor only) to provide single spark. Of course the advance curves must be considered, but it can be done via MS software. But the discussion was about precision, and my inputs would be based on the twin notch standard cup. Whether or not this will be good enough for turbo - I don't know!
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  #23  
Old 3 Days Ago
t120r t120r is offline
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Quote:
Originally Posted by gl90hog View Post
Sure did! But I am trying to work with my hardware. I actually can, MS can use dual input from existing twin Tec (working as a sensor only) to provide single spark. Of course the advance curves must be considered, but it can be done via MS software. But the discussion was about precision, and my inputs would be based on the twin notch standard cup. Whether or not this will be good enough for turbo - I don't know!
If it helps, I am doing testing on trigger wheels to see what resolution the stock Harley cam wheel will read. With any luck I'll have a 24 tooth wheel tested this weekend. Hammer has told me they can make me their steel replacement trigger wheel with whatever pattern I ask them for.
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  #24  
Old 18 Hours Ago
gl90hog gl90hog is offline
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Join Date: Mar 2009
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Sportster/Buell Model: XLH 883
Sportster/Buell Year: 2000
Reputation: 10
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It sure helps!
However, I'm totally stuck. I got a Buell XB9-SX throttle body that just won't fit. I don't even know why people imagine it would fit, since on a Buell it sits vertically. On Sportster it could eventually stay horizontally, but it is impossible to fit the right side bolts due to injector housing. How to get around that, does anyone know?? Let aside the fact that throttle cables should run to the left of the body/air filter, which would be weird
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  #25  
Old 16 Hours Ago
Iron Mike Iron Mike is offline
Senior Custom Bike Builder
 
Join Date: Dec 2014
Location: Phoenix
Posts: 2,739
Sportster/Buell Model: xlch
Sportster/Buell Year: 1964
Sportster/Buell Model #2: XLCH IR EFI
Sportster/Buell Year #2: 1971
Other Motorcycle Model: BMW K1200RS
Other Motorcycle Year: 2001
Reputation: 2375283
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I fit two onboard.
When your straying from stock, you have to think outside the box. Your not going to call the dealer and get help from the factory exploded views, you’ll have to be the author on that portion yourself. Perhaps post some pics of where you’ve gotten to this far and maybe we can offer some suggestions.

YOUR ONLY LIMITED TO YOUR IMAGINATION AND YOUR BIllFOLD.
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  #26  
Old 16 Hours Ago
gl90hog gl90hog is offline
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Sportster/Buell Model: XLH 883
Sportster/Buell Year: 2000
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My bike has about 0.001% original parts on it, and some 80 k miles, so...
Yet those standard Allen bolts can't possibly squeeze in there, are you sure we are talking about the same engine (xl883, 2000) and parts (xb9-sx throttle body)? Maybe different bolts, with VERY slim heads, might fit, and that is my next try, yet it is difficult to get non-standard imperial size fittings over here. I am contemplating the idea of making custom flanges as well
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  #27  
Old 11 Hours Ago
Iron Mike Iron Mike is offline
Senior Custom Bike Builder
 
Join Date: Dec 2014
Location: Phoenix
Posts: 2,739
Sportster/Buell Model: xlch
Sportster/Buell Year: 1964
Sportster/Buell Model #2: XLCH IR EFI
Sportster/Buell Year #2: 1971
Other Motorcycle Model: BMW K1200RS
Other Motorcycle Year: 2001
Reputation: 2375283
Iron Mike has a reputation beyond reputeIron Mike has a reputation beyond reputeIron Mike has a reputation beyond reputeIron Mike has a reputation beyond reputeIron Mike has a reputation beyond reputeIron Mike has a reputation beyond reputeIron Mike has a reputation beyond reputeIron Mike has a reputation beyond reputeIron Mike has a reputation beyond reputeIron Mike has a reputation beyond reputeIron Mike has a reputation beyond repute
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Post a pic of your current dilemma with the TB.
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