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Old Yesterday, 05:23 AM   #1
porter_jamie OP
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Joined: Feb 2010
Location: uk
Oddometer: 25
ktm690 800cc big bore

further to the close ratio gearbox we have just got for our race motor, we are seriously considering using one of these

http://www.frauenschuh-tuning.at/ind...id=ktm_lc4_690

109.6mm bore! i have seen a couple of bikes racing with these fitted and they seem to make massive bhp. im not sure if they make any sense for adv or road use. i will update when i have more info.
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Old Yesterday, 06:44 AM   #2
Foot dragger
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Location: chico,just below rag dump(nor-cal)
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Now THAT I can see,a 790cc thumper appeals to me.
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Old Yesterday, 08:01 AM   #3
Pantah
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I'd be surpised if the starter could crank it.
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Old Yesterday, 08:03 AM   #4
Foot dragger
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Quote:
Originally Posted by Pantah View Post
I'd be surpised if the starter could crank it.
Sucker some neighbor kids into helping bumpstart it.

Its worked in the past.
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Old Yesterday, 12:34 PM   #5
Onederer
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A lot of you are really behind on what's been going on in the big bore single cylinder world for the last decade, not even mentioning the DR800 from several decades ago.

http://goldammercycle.com/collection/goldmember

http://goldammercycle.com/collection/nortorious

http://goldammercycle.com/collection
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Old Yesterday, 12:54 PM   #6
TexaNate
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Because the 690 doesn't make enough power and vibrations stock?
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Old Yesterday, 01:05 PM   #7
porter_jamie OP
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for european supermono racing you really need over 80bhp to win
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