Rear wheel tightening?

  • Motor Head
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21 Sep 2011 20:44 - 21 Sep 2011 20:45 #478417 by Motor Head
Replied by Motor Head on topic Rear wheel tightening?

mvent wrote: It's a 78 A2A, will go on Kawasaki.com to compare to manual

The "A" model is what I chose, at cyclepartsnation. I have trouble on Kawasaki.com, maybe with your VIN #. Trying to just pick it out seems to fail.

1982 KZ1000LTD K2 Vance & Hines 4-1 ACCEL COILS Added Vetter fairing & Bags. FOX Racing rear Shocks, Braced Swing-arm, Fork Brace, Progressive Fork Springs RT Gold Emulators, APE Valve Springs, 1166 Big Bore kit, RS34's, GPZ cams.
1980 KZ550LTD C1 Stock SOLD Miss it
1979 MAZDA RX7 in the works, 13B...
Last edit: 21 Sep 2011 20:45 by Motor Head.

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21 Sep 2011 21:02 #478419 by T_Dub
Replied by T_Dub on topic Rear wheel tightening?

jonnybravo wrote: ALSO
if the axle nut doesnt tighten against the swingarm then its up to the axle adjusters to keep the axle from moving under pressure and they arent designed to do that (unless the axle is all the way forward against part number 26), they are exactly the same as the 73 to 76,
www.bikebandit.com/houseofmotorcycles/19...-us/o/m3930#sch38752
dont believe me, go loosen up ur axle nut and kick the rear tire and watch it move, so what keeps the axle in place ????, the pressure on the swingarm, PERIOD, pressure on the liner and spacer isnt going to keep the axle from moving, thats common sense


Wow, thats not accurate at all. Pressure, and therefore friction, is all that keeps most lap joints together. In most bolted joints the bolt is only supposed to provide a tension force, and thats what keeps everything together. Bolts are rarely meant to take shear in a situation like you describe.

1977 KZ650B1
-810cc
-Cavanaugh Racing Head
-Mikuni RS34's
-GPR Muffler

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21 Sep 2011 21:15 - 21 Sep 2011 21:17 #478424 by jonnybravo
Replied by jonnybravo on topic Rear wheel tightening?

T_Dub wrote:

jonnybravo wrote: ALSO
if the axle nut doesnt tighten against the swingarm then its up to the axle adjusters to keep the axle from moving under pressure and they arent designed to do that (unless the axle is all the way forward against part number 26), they are exactly the same as the 73 to 76,
www.bikebandit.com/houseofmotorcycles/19...-us/o/m3930#sch38752
dont believe me, go loosen up ur axle nut and kick the rear tire and watch it move, so what keeps the axle in place ????, the pressure on the swingarm, PERIOD, pressure on the liner and spacer isnt going to keep the axle from moving, thats common sense


Wow, thats not accurate at all. Pressure, and therefore friction, is all that keeps most lap joints together. In most bolted joints the bolt is only supposed to provide a tension force, and thats what keeps everything together. Bolts are rarely meant to take shear in a situation like you describe.

then what SPECIFICALLY keeps the axle from moving ???? the adjusters ??? the spacers ??? , or the axle nut tension ????
Last edit: 21 Sep 2011 21:17 by jonnybravo.

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21 Sep 2011 21:19 - 21 Sep 2011 21:20 #478425 by jonnybravo
Replied by jonnybravo on topic Rear wheel tightening?

T_Dub wrote:

jonnybravo wrote: ALSO
if the axle nut doesnt tighten against the swingarm then its up to the axle adjusters to keep the axle from moving under pressure and they arent designed to do that (unless the axle is all the way forward against part number 26), they are exactly the same as the 73 to 76,
www.bikebandit.com/houseofmotorcycles/19...-us/o/m3930#sch38752
dont believe me, go loosen up ur axle nut and kick the rear tire and watch it move, so what keeps the axle in place ????, the pressure on the swingarm, PERIOD, pressure on the liner and spacer isnt going to keep the axle from moving, thats common sense


Wow, thats not accurate at all. Pressure, and therefore friction, is all that keeps most lap joints together. In most bolted joints the bolt is only supposed to provide a tension force, and thats what keeps everything together. Bolts are rarely meant to take shear in a situation like you describe.


BTW i was describing "pressure and friction" against the swingarm, unless the pressure resides againt the spacers and liner, which would have to be against something cause the axle adjuster wont do it read again
Last edit: 21 Sep 2011 21:20 by jonnybravo.

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21 Sep 2011 21:22 - 21 Sep 2011 21:23 #478426 by jonnybravo
Replied by jonnybravo on topic Rear wheel tightening?
in the diagram # 2 and #3 and #25 tighten against something, what then ????

answer THE SWINGARM HENCE WIREMANS AND OTHERS EXPERTISE
Last edit: 21 Sep 2011 21:23 by jonnybravo.

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21 Sep 2011 21:25 - 21 Sep 2011 21:26 #478428 by jonnybravo
Replied by jonnybravo on topic Rear wheel tightening?
IF THEY DONT TIGHTEN AGAINST THE SWINGARM THEN WHY DO U HAVE TO LOOSE THE AXLE NUT TO ADJUST THE CHAIN/AXLE ADJUSTERS ????
Last edit: 21 Sep 2011 21:26 by jonnybravo.

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21 Sep 2011 21:26 #478429 by T_Dub
Replied by T_Dub on topic Rear wheel tightening?
The axle doesn't move becuse of the friction between the swingarm and the adjuster, created by the tension in the axle, which causes an equal and opposite outward force that comes from the "springiness" in the spacers and bearing races. These forces result in a pressure between the swingarm and the adjuster face. This pressure is what resists movement of the axle, because it causes friction between the swingarm and the adjusters.

1977 KZ650B1
-810cc
-Cavanaugh Racing Head
-Mikuni RS34's
-GPR Muffler

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21 Sep 2011 21:27 - 21 Sep 2011 21:28 #478430 by jonnybravo
Replied by jonnybravo on topic Rear wheel tightening?

T_Dub wrote: The axle doesn't move becuse of the friction between the swingarm and the adjuster, created by the tension in the axle, which causes an equal and opposite outward force that comes from the "springiness" in the spacers and bearing races. These forces result in a pressure between the swingarm and the adjuster face. This pressure is what resists movement of the axle, because it causes friction between the swingarm and the adjusters.


yes THATS WHAT WE'VE BEEN SAYING, u just said it, force against the swingarm, DUH :pinch: :pinch:
Last edit: 21 Sep 2011 21:28 by jonnybravo.

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21 Sep 2011 21:30 - 21 Sep 2011 21:31 #478431 by jonnybravo
Replied by jonnybravo on topic Rear wheel tightening?
AND WHEN PRESSURE.FORCE IS APPLIED TO THE SWINGARM IT CAN CAUSE FRICTION THUS RESULTING IN THE WHEEL NOT SPINNING FREELY, HENCE THE CHANGE FROM A FIXED TORQUE VALUE (95) TO AN ADJUSTABLE (72 TO 101) IN LATER YEARS

also called pinching, aka what wireman said :sick:
Last edit: 21 Sep 2011 21:31 by jonnybravo.

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21 Sep 2011 21:35 #478432 by T_Dub
Replied by T_Dub on topic Rear wheel tightening?
No you misunderstand me. The force is transferred through spacers and inner bearing races, all of which do not move. The only places in this setup, when installed properly, which have rotating friction are the bearings themselves and the seals. The friction I am talking about is the static friction that keeps the axle where it is, which is the reason for torquing it down in the first place.

1977 KZ650B1
-810cc
-Cavanaugh Racing Head
-Mikuni RS34's
-GPR Muffler

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21 Sep 2011 21:38 #478433 by jonnybravo
Replied by jonnybravo on topic Rear wheel tightening?
ok mr science guys, go out oUt ur shop, find a piece of channel steel, find ur vise, put the steel channel in the vise, PUT UR FINGER IN THE CHANNEL, make sure to pack them in tight, TIGHTEN THE VISE, u all so smart DONT PULL EM OUT AND KEEP TIGHTENING let me know what happens, PICTURES PLEASE

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21 Sep 2011 21:42 #478434 by T_Dub
Replied by T_Dub on topic Rear wheel tightening?
I see you have no concept of whats going on in this situation. I'm just glad the guy who started the topic is trying to find out what's wrong instead of just leaving his axle loose.

Put a piece of steel tube thats 1.5" outside diameter and 1" inside diameter in your vice, and clamp on the pipe fromt he ends. Now how much pressure before it crushes? Its a lot. Thats actually more like what's going on here.

1977 KZ650B1
-810cc
-Cavanaugh Racing Head
-Mikuni RS34's
-GPR Muffler

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