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Old 05-27-2009, 08:37 AM   #1 (permalink)
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Counter Balanced Engine

Anybody ever wonder why Harley doesn't put the counter balanced engine in the touring models. I like my Heritage at a redlight much better than my new bagger.
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Old 05-27-2009, 08:56 AM   #2 (permalink)
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My friends ask me the same question. I had a 06 Heritage & traded it for the 09 Ultra Classic. I don't mind the shaking at a stop but I love the smooth ride at highway speed.
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Old 05-27-2009, 09:34 AM   #3 (permalink)
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05 Heritage traded for an 07 Road King. Loved everything about the Heritage, everything, except the high frequency vibration that you finally notice about 3 hours into a tour. That became very tiring on long trips. Well, that and the 5 speed transmission. Both of these were problems mostly only on the interstates.
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Old 05-27-2009, 09:36 AM   #4 (permalink)
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The reason for the counter balancing is because they are hard mounted. The other models have rubber mounts, and the engine smoothes out with some RPM.
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Old 05-27-2009, 10:27 AM   #5 (permalink)
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I dont know why, but i am sure glad that they didnt!
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Old 05-27-2009, 03:38 PM   #6 (permalink)
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To get a v-twin to run smooth, you have to balance the crank so that it will run smooth at a certain RPM range. Hard mounted motors are smooth at idle and not really smooth at cruising. When the motor gets rubber mounted, you can set it to be smooth at cruise, but it jumps around at idle.
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Take you a glass of water. Make it against the law. See how good the water tastes. When you can't have any at all.

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Old 05-27-2009, 10:09 PM   #7 (permalink)
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Quote:
Originally Posted by route66paul View Post
To get a v-twin to run smooth, you have to balance the crank so that it will run smooth at a certain RPM range. Hard mounted motors are smooth at idle and not really smooth at cruising. When the motor gets rubber mounted, you can set it to be smooth at cruise, but it jumps around at idle.
Hard mounted motors are smooth at idle and not really smooth at cruising.

Allow me to quibble, mine is vibration-less.



Al
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Old 05-27-2009, 10:55 PM   #8 (permalink)
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Why not rubber mount a counter balanced motor and have the best of both? My softail idles and rides without vibration until 75 or 80. My street glide smooths out after getting moving and is nice and steady until decel and idle.
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Old 05-28-2009, 06:33 AM   #9 (permalink)
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rolling thunder chassis makes a bagger frame designed fo the b motor for those of you ready to really get custom!!
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Old 05-28-2009, 05:18 PM   #10 (permalink)
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I road Gold Wings for years...that's smooth. My '05 Ultra shakes and snorts when at a light, and I Love It..!!! Scares the "Boogie Man" away...!!!
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Old 05-29-2009, 02:54 PM   #11 (permalink)
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My Screamin Eagle Road King was ideling at a friends shop the other day.
A guy and his younger son came in to fill a tire with air, when the son says to me why does your bike vibrate so much. Before I could reply the father said boy thats not vibrating, it's breathing. Couldnt have explained it better
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Old 05-29-2009, 03:26 PM   #12 (permalink)
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Originally Posted by screaminrdking View Post
My Screamin Eagle Road King was ideling at a friends shop the other day.
A guy and his younger son came in to fill a tire with air, when the son says to me why does your bike vibrate so much. Before I could reply the father said boy thats not vibrating, it's breathing. Couldnt have explained it better

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Old 05-29-2009, 03:51 PM   #13 (permalink)
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My 96b with 6 speed is smooth as glass from idle to 85 ish. Never been faster on it as I see no reason. 7700 miles total and 850 miles last weekend and have never noticed any vibration at any speed for any reason. Some like shakers and some don't. That's why we are given choices. One good thing about the rubber mounted engines is ya get to check every bolt on the bike more often as it slips my mind most times cause everything isn't shakin all the time.
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Old 05-29-2009, 04:02 PM   #14 (permalink)
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I can only guess that they don't use the "B" motor across all lines (except v-rod) because of the traditionalists wanting the Harley vibration. If they were to use the "B" motor on the touring bikes they could solid mount the motor, use it as a structural part of the frame which would allow them the lighten up the very heavy frame they currently use. The touring models also offer better stopping power due to their dual rotor front brake setup and this could cause havoc with the counter balance system if the rear wheel is locked up without the clutch engaged, but this is all just speculation on my part
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Old 05-29-2009, 10:03 PM   #15 (permalink)
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Quote:
Originally Posted by springer 03 View Post
Why not rubber mount a counter balanced motor and have the best of both? My softail idles and rides without vibration until 75 or 80. My street glide smooths out after getting moving and is nice and steady until decel and idle.
The reason The Moco didn't rubber mount the B motor in the Softail was because they couldn't keep "the look" with the rubber mount system, because you need extra clearance between the motor & the frame to allow for movement. They wanted the motor to be "tight" looking within the frame, without too much clearance. Makes for a better "chopper" look.
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