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7 Pin To 8 Pin Ignition Module Adapter For '91-'93 Harley-Davidson Motorcycles | ![]() |
0 Bid | US $10.00 | 3h 11m |
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EXCELSIOR ROADMASTER TALISMAN TWIN MOTORCYCLE MANUAL | ![]() |
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US $23.98 | 4h 26m |
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BMW TWINS Motorcycle manual | ![]() |
0 Bid | US $9.95 | 4h 33m |
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Matchbox Twin Pack #21 Both are MINT on card, #67 Datson 280Z+Motorcycle Trailer | ![]() |
0 Bid | US $12.95 | 4h 57m |
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Triumph Motorcycle 750cc Twin Top End Gasket Set | ![]() |
0 Bid | US $29.95 | 5h 59m |
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BSA TWINS MOTORCYCLE RESTORATION BOOK MANUAL A65 A10 A7 A50 ROCKET LIGHTNING ++ | ![]() |
4 Bids | US $41.84 | 7h 33m |
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1978 TRIUMPH BONNEVILLE TIGER 750cc MOTORCYCLE BROCHURE CATALOG T140 TR7 TWIN | ![]() |
0 Bid | US $9.99 | 7h 44m |
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Vtg Honda Motorcycle service repair maintenance manual 400-450 twins 78 - 87 | ![]() |
0 Bid | US $4.95 | 8h 37m |
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5 Motorcycle Manuals- Kawasaki KZ440- '80-'82/ Honda- '64-'84- 125-450cc Twins | ![]() |
1 Bid | US $9.99 | 8h 41m |
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Motorcyclist Motorcycle 1962 Triumph SPB Scrambler Harley BSA Royal Star Twins | ![]() |
0 Bid | US $3.95 | 9h 26m |
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Big Twin Harley Davidson Motor Cycles Aruba T-Shirt Medium | ![]() |
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US $8.95 | 10h 4m |
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1972 Yamaha LS2 / LS 2 100 cc Twin 2 Stroke Vintage Motorcycle No Reserve | ![]() |
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US $525.00 | 10h 58m |
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Spark plug boots pair for twin motorcycles 7mm wire caps Triumph Norton BSA | ![]() |
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US $6.00 | 11h 35m |
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Gremlin Gargoyle Bell, Guardian Motorcycle Bell POW MIA w/ V-Twin Engine Ringer | ![]() |
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US $10.99 | 12h 52m |
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Vintage 80s Harley Davidson Motorcycle V-Twin Crewneck Sweatshirt Shirt Black XL | ![]() |
0 Bid | US $19.99 | 13h 2m |
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Motorcycle 6/1/1966,Motobi 48cc Sport test,BMW Twins R69S & R50S,Velocette sing | ![]() |
0 Bid | US $5.14 | 19h 54m |
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Motorcycle 27/7/1967,Suzuki T200 Invader twin road test,Paul Dunstall profile | ![]() |
0 Bid | US $5.14 | 19h 56m |
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Motorcycle 25/3/1965,305cc Honda C77 twin road test, Frame making Technique | ![]() |
1 Bid | US $5.14 | 19h 56m |
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Motorcycle 12/8/1965,249cc DMW Sports twin road test,Bond Service tips,Ulster GP | ![]() |
0 Bid | US $5.14 | 19h 58m |
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HARLEY DAVIDSON Die-Cast Replica Motorcycle 1928 JDH Twin Cam Green BNIB NR | ![]() |
0 Bid | US $.99 | 21h 25m |
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Honda : VTX N Honda Street Motorcycle VTX1800N 1800cc V Twin Cruiser | 9 Bids | US $5,000.00 | 1d 4h 10m |
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Transmission TRAP Door Harley Davidson Big Twin 5 Speed 1987-later Aluminum | ![]() |
1 Bid | US $40.00 | 1d 4h 15m |
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Other Makes : 300 trials Fantic 300 twin shock trails motorcycle | ![]() |
13 Bids | US $493.00 | 1d 4h 18m |
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1991-2012 Harley Dyna Glide HD Custom Motorcycle CHROME BOLT CAPS Topper Cover | ![]() |
1 Bid | US $29.95 | 1d 7h 36m |
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HARLEY MOTORCYCLE SOLID BILLET 3" HANDLEBAR RISERS SET | ![]() |
0 Bid | US $52.16 | 1d 8h 24m |
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(3)Harley-Davidson Motorcycles 1909 V-Twin Glasses/Mugs | ![]() |
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US $27.99 | 1d 8h 24m |
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Custom Built Motorcycles : Chopper V-Twin Chopper Sopranos Tribute Theme bike ((ONE OFF HAND MADE ROLLING ART))! | ![]() |
6 Bids | US $5,100.00 | 1d 8h 28m |
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Original Harley Davidson Motorcycle Service Manual 1940-47 Big Twin Knucklehead | ![]() |
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US $200.00 | 1d 8h 35m |
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NOS System with Extras for Motorcycle / ATV Over 500cc Twins, V Twins, XS650 | ![]() |
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US $600.00 | 1d 9h 12m |
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ORIGINAL INDIAN Gas Left SideTank Motorcycle 1948? Collectable Big Twin Obsolete | ![]() |
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(4) Harley Davidson Motorcycle Books - Century Ultimate Twin Cam Projects | ![]() |
0 Bid | US $9.99 | 1d 9h 55m |
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V-Twin Harley Davidson DRAGON UVProof sticker 6" wide 5" Motorcycle Decal Flames | ![]() |
0 Bid | US $.99 | 1d 10h 21m |
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1912 AMERICAN MOTORCYCLE Ad. Long Stroke 4 1/2 to 12 HP Engines, Single & Twin | ![]() |
0 Bid | US $7.50 | 1d 11h 18m |
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80s Vintage Harley Davidson V Twin Soft Thin Motorcycle T Shirt | ![]() |
1 Bid | US $33.00 | 1d 11h 19m |
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Ducati 750 GT 1970 prototype motorcycle photo v-twin | ![]() |
0 Bid | US $18.75 | 1d 15h 29m |
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Twin motorcycle

why does one brand of v twin 4-stroke rotate in one direction,but another brand will rotate in the opposite.?
why do some brands of v-twin 4-stroke motorcycle engines rotate in one direction,while another brand will rotate in the opposite direction.i posted this yesterday and asked it wrong.sorry.
Obviously to go forward the rear tire needs to turn in the same direction on either model. The direction of engine rotation would depend on the intermediate drive, transmission and final drive. The intermediate drive is the method of connecting the engine to the transmission. This could be a belt or chain drive in which the transmission primary shaft and the crankshaft would turn the same direction. If the intermediate drive was done with gears the primary shaft and the crankshaft would turn in opposite directions.
If the transmission uses a standard two shaft set the primary and output shafts will turn in opposite directions where a three shaft transmission they would turn the same way.
The final drive can also make a difference as if it uses a belt or chain drive the wheel and the output shaft would turn the same direction while using a shaft drive the output shaft and the wheel would turn in opposite directions.
If both models used similar final drives, for example both use a belt or chain drive, and both used the same type of two shaft transmission, but one uses a belt for the intermediate drive and the other uses a gear drive, the engines would need to turn in opposite directions.
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7 Pin To 8 Pin Ignition Module Adapter For '91-'93 Harley-Davidson Motorcycles | ![]() |
0 Bid | US $10.00 | 3h 10m |
![]() |
EXCELSIOR ROADMASTER TALISMAN TWIN MOTORCYCLE MANUAL | ![]() |
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US $23.98 | 4h 26m |
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BMW TWINS Motorcycle manual | ![]() |
0 Bid | US $9.95 | 4h 33m |
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Matchbox Twin Pack #21 Both are MINT on card, #67 Datson 280Z+Motorcycle Trailer | ![]() |
0 Bid | US $12.95 | 4h 57m |
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Triumph Motorcycle 750cc Twin Top End Gasket Set | ![]() |
0 Bid | US $29.95 | 5h 59m |
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BSA TWINS MOTORCYCLE RESTORATION BOOK MANUAL A65 A10 A7 A50 ROCKET LIGHTNING ++ | ![]() |
4 Bids | US $41.84 | 7h 33m |
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1978 TRIUMPH BONNEVILLE TIGER 750cc MOTORCYCLE BROCHURE CATALOG T140 TR7 TWIN | ![]() |
0 Bid | US $9.99 | 7h 44m |
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Vtg Honda Motorcycle service repair maintenance manual 400-450 twins 78 - 87 | ![]() |
0 Bid | US $4.95 | 8h 37m |
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5 Motorcycle Manuals- Kawasaki KZ440- '80-'82/ Honda- '64-'84- 125-450cc Twins | ![]() |
1 Bid | US $9.99 | 8h 41m |
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Motorcyclist Motorcycle 1962 Triumph SPB Scrambler Harley BSA Royal Star Twins | ![]() |
0 Bid | US $3.95 | 9h 26m |
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Big Twin Harley Davidson Motor Cycles Aruba T-Shirt Medium | ![]() |
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US $8.95 | 10h 4m |
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1972 Yamaha LS2 / LS 2 100 cc Twin 2 Stroke Vintage Motorcycle No Reserve | ![]() |
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US $525.00 | 10h 58m |
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Spark plug boots pair for twin motorcycles 7mm wire caps Triumph Norton BSA | ![]() |
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US $6.00 | 11h 35m |
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Gremlin Gargoyle Bell, Guardian Motorcycle Bell POW MIA w/ V-Twin Engine Ringer | ![]() |
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US $10.99 | 12h 52m |
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Vintage 80s Harley Davidson Motorcycle V-Twin Crewneck Sweatshirt Shirt Black XL | ![]() |
0 Bid | US $19.99 | 13h 2m |
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Motorcycle 6/1/1966,Motobi 48cc Sport test,BMW Twins R69S & R50S,Velocette sing | ![]() |
0 Bid | US $5.14 | 19h 54m |
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Motorcycle 27/7/1967,Suzuki T200 Invader twin road test,Paul Dunstall profile | ![]() |
0 Bid | US $5.14 | 19h 56m |
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Motorcycle 25/3/1965,305cc Honda C77 twin road test, Frame making Technique | ![]() |
1 Bid | US $5.14 | 19h 56m |
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Motorcycle 12/8/1965,249cc DMW Sports twin road test,Bond Service tips,Ulster GP | ![]() |
0 Bid | US $5.14 | 19h 58m |
![]() |
HARLEY DAVIDSON Die-Cast Replica Motorcycle 1928 JDH Twin Cam Green BNIB NR | ![]() |
0 Bid | US $.99 | 21h 25m |
![]() |
Honda : VTX N Honda Street Motorcycle VTX1800N 1800cc V Twin Cruiser | 9 Bids | US $5,000.00 | 1d 4h 10m |
![]() |
Transmission TRAP Door Harley Davidson Big Twin 5 Speed 1987-later Aluminum | ![]() |
1 Bid | US $40.00 | 1d 4h 15m |
![]() |
Other Makes : 300 trials Fantic 300 twin shock trails motorcycle | ![]() |
13 Bids | US $493.00 | 1d 4h 18m |
![]() |
1991-2012 Harley Dyna Glide HD Custom Motorcycle CHROME BOLT CAPS Topper Cover | ![]() |
1 Bid | US $29.95 | 1d 7h 36m |
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HARLEY MOTORCYCLE SOLID BILLET 3" HANDLEBAR RISERS SET | ![]() |
0 Bid | US $52.16 | 1d 8h 24m |
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(3)Harley-Davidson Motorcycles 1909 V-Twin Glasses/Mugs | ![]() |
![]() |
US $27.99 | 1d 8h 24m |
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Custom Built Motorcycles : Chopper V-Twin Chopper Sopranos Tribute Theme bike ((ONE OFF HAND MADE ROLLING ART))! | ![]() |
6 Bids | US $5,100.00 | 1d 8h 28m |
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Original Harley Davidson Motorcycle Service Manual 1940-47 Big Twin Knucklehead | ![]() |
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US $200.00 | 1d 8h 35m |
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NOS System with Extras for Motorcycle / ATV Over 500cc Twins, V Twins, XS650 | ![]() |
![]() |
US $600.00 | 1d 9h 12m |
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ORIGINAL INDIAN Gas Left SideTank Motorcycle 1948? Collectable Big Twin Obsolete | ![]() |
5 Bids | US $45.00 | 1d 9h 33m |
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(4) Harley Davidson Motorcycle Books - Century Ultimate Twin Cam Projects | ![]() |
0 Bid | US $9.99 | 1d 9h 55m |
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V-Twin Harley Davidson DRAGON UVProof sticker 6" wide 5" Motorcycle Decal Flames | ![]() |
0 Bid | US $.99 | 1d 10h 21m |
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1912 AMERICAN MOTORCYCLE Ad. Long Stroke 4 1/2 to 12 HP Engines, Single & Twin | ![]() |
0 Bid | US $7.50 | 1d 11h 18m |
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80s Vintage Harley Davidson V Twin Soft Thin Motorcycle T Shirt | ![]() |
1 Bid | US $33.00 | 1d 11h 19m |
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Ducati 750 GT 1970 prototype motorcycle photo v-twin | ![]() |
0 Bid | US $18.75 | 1d 15h 28m |
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HARLEY DAVIDSON 1977 V-TWIN MOTORCYCLE BROCHURE-RARE | ![]() |
0 Bid | US $14.95 | 1d 17h 11m |
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0 Bid | US $3.89 | 1d 23h 56m |
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V-Twin Motorcycle February 2009 Magazine Still in Plastic Cover | ![]() |
0 Bid | US $2.00 | 2d 50m |
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VINTAGE 2006 LEESBURG BIKEFEST TWIN STUDDED MOTORCYCLE VEST PIN | ![]() |
0 Bid | US $9.99 | 2d 4h 15m |
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VINTAGE 2004 DAYTONA JESUS FISH TWIN STUDDED MOTORCYCLE VEST PIN | ![]() |
0 Bid | US $.99 | 2d 4h 24m |
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0 Bid | US $120.00 | 2d 4h 37m |
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Vincent Motorcycles* Vincent Vee-Twins Roy Harper Signed | ![]() |
0 Bid | US $47.32 | 2d 5h 56m |
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0 Bid | US $39.99 | 2d 6h 6m |
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US $30,000.00 | 2d 6h 55m |
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Dragon V-Twin Motorcycle Stugis, South Dakota T-Shirt - Harley Davidson - Size L | ![]() |
0 Bid | US $9.99 | 2d 8h 25m |
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Bonneville Stories Part VIII "Gates 158 Cubic Inch Monster V-Twin Motorcycle"
How to use a Stroboscope with two connections to time a twin cylinder motorcycle?
One cable on the high tension side and one on the earth.Shine on the timimg mark until it spot on the ignition mark on the flywheel

























































































































































































