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Twin Cam B Counter Balance?

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  #21  
Old 06-16-2011 | 12:06 PM
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by the way, there is a member here that has eliminated his counterbalance from his engine, balanced the assembly & is quite pleased with how it has turned out, as he has more horsepower, ( as the motor's not having to spin that 9lb weight ) it spins up much quicker, & the more rpm's he turns, the smoother it gets,( like an A motor ), the exact opposite of a stock B motor, the more rpm's you turn, the more vibrations you get because the counterbalance gets overwhelmed, rendering it ineffective at higher rpm's

so there's the same answer that Andrews sent,,, toss the counterbalance & balance the assembly,,,, therefore, no need for gear driven re-engineering
 

Last edited by NorCal Dog; 06-16-2011 at 12:13 PM.
  #22  
Old 06-16-2011 | 12:48 PM
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Originally Posted by NorCal Dog
well, when HD calls a crankset assembly " good " to install in a B motor when it's twelve thousandths out,,, that's seriously fukked up,,, better hope that that counterbalance smoothes that **** out <<<<< NO FUKING WAY it will to a point, maybe up to 3k,, but after that,, that bike's gonna be shaking your molars out

the A motors " engines " get balanced at the factory
If U would take the time to watch the mini pods from revulation U'd learn the Truth why the new motors have run out and why it not as bad as some think it is.

Yes the sprocket endshaft is out of round because its not machined and it doesn't have to be any more, but its not the crank shaft itself thats out and the mini pods explains it.

Here they are again if U want to view them.
http://vimeo.com/2536700
http://vimeo.com/2536956
http://vimeo.com/2567824
http://vimeo.com/2578488
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  #23  
Old 06-16-2011 | 02:11 PM
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Originally Posted by oct1949
If U would take the time to watch the mini pods from revulation U'd learn the Truth why the new motors have run out and why it not as bad as some think it is.

Yes the sprocket endshaft is out of round because its not machined and it doesn't have to be any more, but its not the crank shaft itself thats out and the mini pods explains it.

Here they are again if U want to view them.
http://vimeo.com/2536700
http://vimeo.com/2536956
http://vimeo.com/2567824
http://vimeo.com/2578488
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watched the pods

my conserns deal more with the scissoring of the two crank half's on the crank pin,, weld it,, it's then a non issue
and
the fact that the counterbalance gear has a tendency to shift on the crankshaft, due to hard acceleration / downshifting / someone sneezed too hard , therefore rendering the counterbalance ineffective & adds to the vibration, ( is the counterbalance gear just a press fit on the crank & not keyed ? of course if it were keyed & a force which would have been enough to make the gear rotate on the crank, instead would transfer thru to the two half's of the crank & making the wheels scissor on the crank pin ) ( loose loose design )

with that said, i still stands by my OP

weld the crank ( no chance of scissoring )
eliminate counterbalance ( no chance of gear rotating on crank )
balance rotating mass
 

Last edited by NorCal Dog; 06-16-2011 at 02:14 PM.
  #24  
Old 06-16-2011 | 02:58 PM
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Originally Posted by NorCal Dog
HD currently puts junk parts, & junk bearings, & crap specs & tolerances in their B bottom end, & tries to keep it from shaking itself to pieces by using a counterbalance WTF ?
Just put an A motor with the good bottom end in there. $1000-1500 on feebay.
 
  #25  
Old 06-16-2011 | 03:11 PM
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Originally Posted by Harley_Dude
Just put an A motor with the good bottom end in there. $1000-1500 on feebay.
A motor is a rubbermount
B motor is not
they're not interchangeable

but the cranks are
 

Last edited by NorCal Dog; 06-16-2011 at 03:13 PM.
  #26  
Old 06-16-2011 | 03:28 PM
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Originally Posted by NorCal Dog
A motor is a rubbermount
B motor is not
they're not interchangeable

but the cranks are
Duh, sorry I'm an evo guy (all engines the same). Never understood the B, it's a Harley, it's suppose to shake.
 
  #27  
Old 06-16-2011 | 04:14 PM
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Originally Posted by Harley_Dude
it's a Harley, it's suppose to shake.
to a certain degree, yes

but if you've got an assembly inside of a motor ( engine ), & it's not absolutely treated with kid gloves, ( never over rev,, never downshift too hard, or there will be consequences,,, MIGHTY EXPENSIVE consequences at that ) or it will do the exact opposite & add to the vibration ???

*** that

as you can tell, i'm not a proponent for a inefficcient design from a co. that proves to cost the end user a significant amount of money to correct, which profits again from said customer to correct the inefficient design,, but i do like my softail & would rather ride it than a touring bike,, go figure



peace out
 
  #28  
Old 06-16-2011 | 04:16 PM
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Originally Posted by NorCal Dog
well, when HD calls a crankset assembly " good " to install in a B motor when it's twelve thousandths out,,, that's seriously fukked up,,, better hope that that counterbalance smoothes that **** out <<<<< NO FUKING WAY it will to a point, maybe up to 3k,, but after that,, that bike's gonna be shaking your molars out

The A motors " engines " get balanced at the factory
Pooch I'm going to check into this but just looking at an A engine in action (motors are on sewing machines) tells me that they are in no way "balanced." And I have two B engines and they don't vibrate any more at higher revs than at idle. Now go practice yer bass son... ;- )
 
  #29  
Old 06-16-2011 | 05:06 PM
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Originally Posted by bjewell
Pooch I'm going to check into this but just looking at an A engine in action (motors are on sewing machines) tells me that they are in no way "balanced." And I have two B engines and they don't vibrate any more at higher revs than at idle. Now go practice yer bass son... ;- )
first off,, i do in fact " practice " my bass techniques,, but i do get PAID to PLAY

it sounds like you're the guy that's riding the softails with the kid gloves on,,, consider yourself fortunate that that CB gear hasn't rotated yet on the crank due to an errant alzheimers moment of downshifting at 4k when you meant to upshift

that's all it takes,, one day you forget the meds,, downshift when you meant to upshift, BAM,, yer ****'s shakin at all rpm's

obviously all the B motors don't have excessive vibration, but there's many that do & the sad part is that alot of the riders ignore it, or don't even know it,,, why ?,,,, it's a harley, it's sposed to vibrate,,, wrong
 

Last edited by NorCal Dog; 06-16-2011 at 05:26 PM.
  #30  
Old 06-16-2011 | 06:50 PM
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My Fat Boy has more than six large in the engine and it's a runner. i don't baby it anymore than I baby my Hayabusa. Glad you got a paying gig Pooch, hear them weddings and Bar Mitzvahs also have good food.
 



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