honey and vinegar....desire for a par twin section still abound - Page 4 - Speedzilla Motorcycle Message Forums
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  #61 (permalink)  
Old 03-20-2009, 02:47 PM
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look at that. this dude is building a fuuckin fortune, and a large company, based on the simple brilliance of the parallel twin. common sense, intelligence, hard work, and a parallel twin. how can you guys reasonably ignore such a thing?
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  #62 (permalink)  
Old 03-20-2009, 03:09 PM
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http://www.xs650.org.au/kev's%20turbo.htm
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Old 03-20-2009, 03:15 PM
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Old 03-20-2009, 03:23 PM
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Old 03-21-2009, 12:41 AM
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Old 03-21-2009, 12:59 AM
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Last edited by UnpaintedHuffhines; 03-21-2009 at 01:10 AM.
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Old 03-21-2009, 12:06 PM
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Old 03-21-2009, 12:52 PM
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  #71 (permalink)  
Old 03-22-2009, 05:45 AM
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e85 ethanol 250cc par twin chinese





TOMOS parallel twin


Last edited by UnpaintedHuffhines; 03-22-2009 at 06:12 AM.
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  #72 (permalink)  
Old 03-22-2009, 06:14 AM
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Bore x stroke 36 x 39,2 mm
Inlet: 21mm carburateur with VForce3 membraan
Exhaust: AB-Tuning
Ignition: HPI electronisch met curve

HP: (SAE backwheel) +/- 28,5 HP @ 15200 rpm
Torque: 13,5 Nm @ 15000 rpm
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  #73 (permalink)  
Old 03-22-2009, 06:22 AM
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Old 03-22-2009, 06:26 AM
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Old 03-22-2009, 06:34 AM
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  #76 (permalink)  
Old 03-24-2009, 07:44 PM
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if you like this thread and would like to see a more organized and interesting section on parallel twins, check the poll in this section - street and track - and vote yes biitches

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  #77 (permalink)  
Old 12-24-2011, 07:21 PM
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bump

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  #78 (permalink)  
Old 12-24-2011, 07:59 PM
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Some very cool pics, thanks. I think the I2 is a fantastically compact, beautiful looking motor, particularly well suited to motorcycles.

Who cares if they vibrate more than many other designs (and it's true that they don't have the balance advantage of the V-twin)......designers can work around that by clever used of engine mounts, or even go the whole hog like BMW did with their balance rods. Sometimes, a little bit of "vibe" adds character, IMO. Who wants to ride a ****ing sewing machine?
It all adds to the visceral experience.

The only think I'm not crazy about a 180 I2, is the sound....tend to be a little anemic sometimes. The 360 I2 (like the old Triumphs) sounded great, but were in effect, large singles in terms of vibes...and man, they had a LOT of "character!"

Great thread.
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  #79 (permalink)  
Old 12-24-2011, 08:29 PM
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We dont have a single, v-twin, triple, I4, V4, flat 4, I6, or flat 6 section, but because one member wants it, we should have a section for the least used motorcycle engine configuration currently being made?

Even Larry isn't that obsessed
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