Pointy swing arm side play.

Its not a case of putting stress on it, its how much stress. The pointy frame is made of aluminium alloy which fortunately is a very malleable metal, it takes a lot of compression before it will suffer stress worth talking about. 0.5mm is not going to give you any problems.

[yorkie_chris]

Malleability is a measure of plastic deformation which is permanent, not good.

Cast alloy is far from malleable. It tends to be quite brittle.

[DavieSV]

The spindle bolt acts s if it only conected to one side of the frame, this secures everything in place, any torque you put into this will only act on the chain side of the frame.

that is why the head of this bolt is threaded, the castlated nut then supports the head of the spindle reative to the other side of the frame, this once again allows for a margin of error in manufacturing. the internal gap between the frame doesn't matter.

[fastdruid]

Interesting the different ways manufacturers do things, I can't help but think the way Honda do it is better[1] as there is no need to shim or worry about tolerances leading to slop.

FWIW no freeplay on my SV last time I checked, even the linkages were all nice


Druid

[1] In the VFR the LHS is free to slide from side to side on the bearing inner, the swingarm is prevented from moving by a pair of bearings which butt against a step in the LHS inner side of the swingarm and a circlip to the right. These bearings are then clamped to the RHS of the frame. The modern CBR600RR is very very similar.

[DavieSV]

Originally Posted by svdemon

Its not a case of putting stress on it, its how much stress. The pointy frame is made of aluminium alloy which fortunately is a very malleable metal, it takes a lot of compression before it will suffer stress worth talking about. 0.5mm is not going to give you any problems.

Malleable = hit it with a hammer, it dints.
Brittle = hit it with a hammer, it breaks.

[yorkie_chris]

Ok so you tighten bolt, shoulder on spindle presses bearing inner on chain side (other side on curvy).

Force on bearing inner presses internal spacer, internal spacer presses on the other bearing inner which presses on the frame. So tension on the spindle is pushing the sides of the frame apart.

Unless something is markedly different with the pointy construction

[DavieSV]

Originally Posted by yorkie_chris

Ok so you tighten bolt, shoulder on spindle presses bearing inner on chain side (other side on curvy).

Force on bearing inner presses internal spacer, internal spacer presses on the other bearing inner which presses on the frame. So tension on the spindle is pushing the sides of the frame apart.

Unless something is markedly different with the pointy construction

you are correct chris, now I've woke up

[fastdruid]

Originally Posted by yorkie_chris

Ok so you tighten bolt, shoulder on spindle presses bearing inner on chain side (other side on curvy).

Force on bearing inner presses internal spacer, internal spacer presses on the other bearing inner which presses on the frame. So tension on the spindle is pushing the sides of the frame apart.

Almost, the spindle is tightened into the frame from the RHS, this attempts to force the frame apart, the lock nut is then applied to prevent it from moving and the nut on the LHS clamps the frame and prevents it from pushing the sides of the frame apart.

AFAICS the pointy is the same way round as the curvy too, unless later bikes swapped.

http://fiche.ronayers.com/Index.cfm/..._SWINGING_ARM_

I personally would rather shim it than over tighten it.

Druid

[yorkie_chris]

But also compressing the spacer inside with same force, so which is stronger!

I think you need to grind down the spacer so the bearing inners are flush with the outers. (if they stick out). Then have some washers so the ends of the swingarm bear there.

I don't get where you have play in OP. How have you clamped it to measure?

[yorkie_chris]

Originally Posted by fastdruid

Almost, the spindle is tightened into the frame from the RHS, this attempts to force the frame apart, the lock nut is then applied to prevent it from moving and the nut on the LHS clamps the frame and prevents it from pushing the sides of the frame apart.

How? It is only applying force on LHS spar, it cannot negate by tension a compression the other way.

how to describe it? you can't stand in a bucket and pick yourself up by the handle.