DS 650 Swing Arm Bushings
Dec 24, 2006 | 12:06 AM
#1
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DS 650 Swing Arm Bushings
Are the Bushings 01 and 04 interchangable the 04's have needle bearings would like to change out the 01's
Also Swing are Weight only effects HP to Weight Ratio and the Shock valving (Compressio/Rebound) but not rotating mass?
Also Swing are Weight only effects HP to Weight Ratio and the Shock valving (Compressio/Rebound) but not rotating mass?
Dec 24, 2006 | 02:45 AM
#3
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DS 650 Swing Arm Bushings
Originally posted by: shmee
the bushings are NOT interchangable.
your second question?? is what?
the bushings are NOT interchangable.
your second question?? is what?
Dec 24, 2006 | 03:01 AM
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DS 650 Swing Arm Bushings
Originally posted by: ERBEDS650
Darn! 2nd question , was a lighter swing arm effect rotating mass? Im guessing no
Originally posted by: shmee
the bushings are NOT interchangable.
your second question?? is what?
the bushings are NOT interchangable.
your second question?? is what?
Generally one of the properties of any part that effects or is considered to be rotating mass is, it needs to rotate[img]i/expressions/face-icon-small-wink.gif[/img]. I would consider a swingarm to be mostly unsprung weight which is of higher benefit to you to reduce it than sprung weight. Tires, wheels, hubs, sprockets, chain, etc are rotating mass. I consider the axle to be mostly unsprung weight because, although it rotates, its proximity to the axis of rotation means you can raise or lower its weight fairly significantly and it won't change the difference between crank torque and RWTQ that much. It is significant as far as unsprung weight goes, however.
The reason I don't consider the swing-arm as completely unsprung weight is the fact it attaches at its pivot to the frame which is sprung weight. Somewhere between the lower shock mount and the pivot, the swingarm begins to transition from unsprung to sprung weight in my little mind. That exact point will be ultimately determined by where the shock mount is located on your aftermarket swingarm.
Dec 24, 2006 | 03:16 AM
#5
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DS 650 Swing Arm Bushings
Originally posted by: DSNUT
Generally one of the properties of any part that effects or is considered to be rotating mass is, it needs to rotate[img]i/expressions/face-icon-small-wink.gif[/img]. I would consider a swingarm to be mostly unsprung weight which is of higher benefit to you to reduce it than sprung weight. Tires, wheels, hubs, sprockets, chain, etc are rotating mass. I consider the axle to be mostly unsprung weight because, although it rotates, its proximity to the axis of rotation means you can raise or lower its weight fairly significantly and it won't change the difference between crank torque and RWTQ that much. It is significant as far as unsprung weight goes, however.
The reason I don't consider the swing-arm as completely unsprung weight is the fact it attaches at its pivot to the frame which is sprung weight. Somewhere between the lower shock mount and the pivot, the swingarm begins to transition from unsprung to sprung weight in my little mind. That exact point will be ultimately determined by where the shock mount is located on your aftermarket swingarm.
Originally posted by: ERBEDS650
Darn! 2nd question , was a lighter swing arm effect rotating mass? Im guessing no
Originally posted by: shmee
the bushings are NOT interchangable.
your second question?? is what?
the bushings are NOT interchangable.
your second question?? is what?
Generally one of the properties of any part that effects or is considered to be rotating mass is, it needs to rotate[img]i/expressions/face-icon-small-wink.gif[/img]. I would consider a swingarm to be mostly unsprung weight which is of higher benefit to you to reduce it than sprung weight. Tires, wheels, hubs, sprockets, chain, etc are rotating mass. I consider the axle to be mostly unsprung weight because, although it rotates, its proximity to the axis of rotation means you can raise or lower its weight fairly significantly and it won't change the difference between crank torque and RWTQ that much. It is significant as far as unsprung weight goes, however.
The reason I don't consider the swing-arm as completely unsprung weight is the fact it attaches at its pivot to the frame which is sprung weight. Somewhere between the lower shock mount and the pivot, the swingarm begins to transition from unsprung to sprung weight in my little mind. That exact point will be ultimately determined by where the shock mount is located on your aftermarket swingarm.
Also being a lighter part increasing your HP to weight ratio, sounds like a win win bolt on part!
Thanks Shmee on the Bushings!
Dec 24, 2006 | 01:04 PM
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DS 650 Swing Arm Bushings
Originally posted by: ERBEDS650
So the answer is YES, a lighter than stock swing arm effects the rear drive of rotation mass, by creating more traction for the rotation mass (Drive ) to establish traction (Power to the Ground/Hookup) this is even more enhanced as Nut said with lighter hubs, Axel, 520 Conversion sproket and chain, lighter rims and the gains in controllability as a rider.
Also being a lighter part increasing your HP to weight ratio, sounds like a win win bolt on part!
Thanks Shmee on the Bushings!
Originally posted by: DSNUT
Generally one of the properties of any part that effects or is considered to be rotating mass is, it needs to rotate[img]i/expressions/face-icon-small-wink.gif[/img]. I would consider a swingarm to be mostly unsprung weight which is of higher benefit to you to reduce it than sprung weight. Tires, wheels, hubs, sprockets, chain, etc are rotating mass. I consider the axle to be mostly unsprung weight because, although it rotates, its proximity to the axis of rotation means you can raise or lower its weight fairly significantly and it won't change the difference between crank torque and RWTQ that much. It is significant as far as unsprung weight goes, however.
The reason I don't consider the swing-arm as completely unsprung weight is the fact it attaches at its pivot to the frame which is sprung weight. Somewhere between the lower shock mount and the pivot, the swingarm begins to transition from unsprung to sprung weight in my little mind. That exact point will be ultimately determined by where the shock mount is located on your aftermarket swingarm.
Originally posted by: ERBEDS650
Darn! 2nd question , was a lighter swing arm effect rotating mass? Im guessing no
Originally posted by: shmee
the bushings are NOT interchangable.
your second question?? is what?
the bushings are NOT interchangable.
your second question?? is what?
Generally one of the properties of any part that effects or is considered to be rotating mass is, it needs to rotate[img]i/expressions/face-icon-small-wink.gif[/img]. I would consider a swingarm to be mostly unsprung weight which is of higher benefit to you to reduce it than sprung weight. Tires, wheels, hubs, sprockets, chain, etc are rotating mass. I consider the axle to be mostly unsprung weight because, although it rotates, its proximity to the axis of rotation means you can raise or lower its weight fairly significantly and it won't change the difference between crank torque and RWTQ that much. It is significant as far as unsprung weight goes, however.
The reason I don't consider the swing-arm as completely unsprung weight is the fact it attaches at its pivot to the frame which is sprung weight. Somewhere between the lower shock mount and the pivot, the swingarm begins to transition from unsprung to sprung weight in my little mind. That exact point will be ultimately determined by where the shock mount is located on your aftermarket swingarm.
Also being a lighter part increasing your HP to weight ratio, sounds like a win win bolt on part!
Thanks Shmee on the Bushings!
LOL! [img]i/expressions/face-icon-small-happy.gif[/img] No, the answer is no. The swingarm has nothing to do with rotating mass. It is mostly unsprung weight. lol
Good reading comprehension though, LMAO [img]i/expressions/face-icon-small-happy.gif[/img]
Dec 24, 2006 | 01:26 PM
#7
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DS 650 Swing Arm Bushings
My reading comprehension is fine, Im worried about yours, the question was is there an "EFFECT" on rotating mass? I know and understand the swing arm will be unspring weight (means the shock will work lees to do the same job/ some shocks will need revalving and new springs for the leverage change) geeze!!!! And yes there would be an effect even with a stock chain, sprockets,axel, hubs, adding traction to all the parts rotating in the rear drive.
I guess were just going to go around and around, your Nut your always right. [img]i/expressions/face-icon-small-wink.gif[/img] You Da Man
I guess were just going to go around and around, your Nut your always right. [img]i/expressions/face-icon-small-wink.gif[/img] You Da Man
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Dec 24, 2006 | 01:55 PM
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DS 650 Swing Arm Bushings
I noticed you edited you original question, lol. [img]i/expressions/face-icon-small-happy.gif[/img]
One of these times I will sit down and explain for you how the cooling system works, lmao. [img]i/expressions/face-icon-small-happy.gif[/img]
One more thing, swingarm weight (which was your original question) will NOT effect rotating mass.......but, swingarm length will [img]i/expressions/face-icon-small-wink.gif[/img] Do you know why? [img]i/expressions/face-icon-small-smile.gif[/img]
Merry Christmas ERBE! [img]i/expressions/face-icon-small-happy.gif[/img]
One of these times I will sit down and explain for you how the cooling system works, lmao. [img]i/expressions/face-icon-small-happy.gif[/img]
One more thing, swingarm weight (which was your original question) will NOT effect rotating mass.......but, swingarm length will [img]i/expressions/face-icon-small-wink.gif[/img] Do you know why? [img]i/expressions/face-icon-small-smile.gif[/img]
Merry Christmas ERBE! [img]i/expressions/face-icon-small-happy.gif[/img]
