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| 2013 6 speed |
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Posted by: 1100rider_imp - 03-20-2014, 02:25 AM - Forum: Accessories/Modifications
- Replies (12)
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I wonder if you could take a 2014 6 speed shifting drum (spool) and insert it into the 2013 housing to get 6 speeds? Just use the gears and shifters to convert to 6 speed . I wonder if they would fit? Coould be an fairly inexpensive way to get 6 speeds.
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| Inline 4cyl vibration |
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Posted by: thessler3_imp - 03-20-2014, 02:13 AM - Forum: Mechanical & Technical
- Replies (22)
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I am close to buying a CB1100 and my only concern is the typical inline 4 cylinder high frequency buzzy vibration often found on I4 engines which is particularly bothersome to me. I have owned over thirty bikes since 1968, in many different engine configurations including singles, parallel twins, triples, I4's, V4's and sixes. I am a retired scientist, but will try to keep my explanations simple. "Primary" vibrations are out-of-balance forces that occur at the engine RPM. "Secondary" vibrations occur at twice engine speed. Most vibrations increase substantially with both displacement and RPM. Most inline 4 engines have 180 degree crankpin separation. When cylinders 1 and 4 are at TDC (top-dead-center), cylinders 2 and 3 are at BDC and vice versa. This gives excellent primary balance. Secondary imbalances are caused by differences in piston speed in the upper half of piston travel versus the speeds in the lower half of the travel. Hard to explain, but Wikipedia does it better than me. I attached a link. I4 engines with 180 degree cranks have substantial secondary vibration. This has been known since the early 1900's when Dr. Lanchester wrote on the subject. I4 balancer shafts are engineered to run at twice engine speed and to counter some of the secondary vibes. A single balancer shaft will help, but dual shafts work better. The CB1100 has a single balancer shaft and one rubber engine mount. I have attached a diagram to explain the primary and secondary forces and links to a couple of interesting web pages. I hope it is helpful. If any forum members are interested, I can also explain the vibrations of the v-twins, triples and sixes. Just say so, and I will add those posts.
http://en.wikipedia.org/wiki/Balance_shaft
http://www.autozine.org/technical_school...mooth1.htm
for v-twins http://www.timberwoof.com/motorcycle/V-TWIN-7.html
http://what-when-how.com/automobile/engi...utomobile/
all twins http://dinamoto.it/dinamoto/index_eng.html
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| 2 Photos |
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Posted by: enzo_imp - 03-19-2014, 07:52 PM - Forum: Seat Time
- Replies (4)
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Went for a ride with young George today, CB1100, They are as rear as hens teeth around here.
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| Two of 'em in one place! |
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Posted by: Cormanus - 03-19-2014, 07:45 PM - Forum: Seat Time
- Replies (13)
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So, here it is the first photo on this forum of two Australian CB1100s together in one place. Better than that, it happened because of a forum hosted in the USA. In the blue corner, Enzo's CB1100; in the black corner, Cormanus's bike.
I promise they're different colours. For Randy, here's that blue tank,
So we met south of Brisbane, Queensland, Australia at a place called Beaudesert and rode around an area called the Scenic Rim. It's a bit flatter than my part of the world, drier (at the moment) but very attractive none the less. It's bracketed to the south by mountains—probably mere hills in the US context.
Anyway, we had a good ride and an agreeable catch up. Here's [url=https://maps.google.com.au/maps/ms?msid=201247423130042081552.0004f50423c0bd3178ac1&msa=0&ll=-27.947099,152.889862&spn=0.709687,1.352692]the route map and some pictures.
Enzo's Blue CB
Doesn't look like a big bike from this angle ...
Stopped for a very ordinary burger at Rathdowney and met a Harley on his way to NSW ...
Homeward bound ...
Thanks for a great day, Enzo. It was fabulous meeting another CB1100 owner and seeing his bike.
Edited to include the Harley I missed the first time.
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| 2014 Parts |
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Posted by: The Spaceman_imp - 03-19-2014, 04:39 AM - Forum: Accessories/Modifications
- Replies (11)
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The fische for the 2014 parts are online now. I looked up a few. Prices are rounded off.
Dual exhaust $1,300
Seat $300
Left side aluminum cover $180
I never liked the big plastic sprocket cover, so I will order one of the new ones. The new seat is nice too.
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