Mainstand hitting swingarm

[GSmonkey]

Was doing an inspection of the bike yesterday to work out what I want doing at the 12k service which is coming up soon. I noticed that there was a mark below on the underside of the swingarm where the centrestand has made contact.

I've got a Remus on, but all the rubbers etc. are in place and there is a good 10mm clearance with the bike on the sidestand. I'm assuming that contact is only made when the suspension is fully unloaded i.e. going over jumps etc.

Has anybody else noticed any marks like this?? You can only see them by getting on the floor and looking up at the underside.

 

[Wraithwrider]

GSMinkey

I've been looking out for this problem since someone else posted on it.

Mines okay.

Peter

 

[GSmonkey]

Are you running a Remus Peter?

 

[Wraithwrider]

Yes, a full system. I think from memory it was Big Lee who had a problem but I think that his can wasn't a Remus.

BTW the area where the cat was seems from it's colour to get v hot. The plug colours were fine when I checked em yesterday so I think the mixtures okay.

Peter

 

[Big Lee]

Yes it was me, my can is a Scorpion & after I spoke with them they sent me a link pipe with a longer piece welded on to lower the bump stop. I`ve noticed that the rubber stop has now compacted a bit & the stand is closer to, but not touching, the swingarm. They`re strong springs on thoses centre stands!

If you`ve got the bike on the sidestand there shouldn`t be enough weight on the suspension to compress it so thats the clearence you`ll get when "in flight"! Whats your preload set at? that might affect it?

 

[GSmonkey]

Yes it was me, my can is a Scorpion & after I spoke with them they sent me a link pipe with a longer piece welded on to lower the bump stop. I`ve noticed that the rubber stop has now compacted a bit & the stand is closer to, but not touching, the swingarm. They`re strong springs on thoses centre stands!

If you`ve got the bike on the sidestand there shouldn`t be enough weight on the suspension to compress it so thats the clearence you`ll get when "in flight"! Whats your preload set at? that might affect it?

Got some good clearance on the sidestand, maybe 10mm. I think it can only clout when doing a jump, which I do daily over some 'road calming measures' The rubber stop has compressed, thats for sure.

The pre-load is on medium, but I don't think that would have anything to do with it, as contact is only possible when the swingarm is extended not compressed.

It certainly doesn't look like it hits a lot either, as its only a slight indentation.

 

[Big Lee]

If you put it on the sidestand & get someone to pull the bike over on the stand so the rear wheel is a touch off the ground you`ll be able to check the clearance between stand & arm. All I can think of is that the rubber stop is compressing when the c stand is flicked up & catching the arm slightly.

 

[Wraithwrider]

I'm maybe missing the point here but why do this sidestand stuff?

Surely the mainstand is easier and achieves the same ends?

Peter

 

[GSmonkey]

I'm maybe missing the point here but why do this sidestand stuff?

Surely the mainstand is easier and achieves the same ends?

Peter

That's what I'm going to do. I'll measure against a reference point when on the mainstand - that should tell me if there's a clash.

 

[Big Lee]

Yes Peter you have indeed missed the point by a country mile!
If the bike is on the mainstand you can`t measure how much clearance it has between the centre stand foot which is hitting the swingarm & the swingarm!

As a reference the clearance between the foot edge & mark on my swingarm with the OE can & with no weight on the suspension is 10mm


Here`s a pic of mine to clarify that obviously confusing statement of mine, my only excuse is that I`m on night shift

 

[GSmonkey]

Lee I think the point is put the bike on the mainstand. Measure the distance of the bottom of the swingarm from a fixed point on the bike e.g pillion footrest. In this contiguration the swingarm is at its lowest point.

Then put the bike on the sidestand and measure the top of the mainstand from the some point. You can then determine whether the two will hit.

.....I'll do it when I'm bored sometime

 

[Wraithwrider]

Country mile I agree! But it's only when you're back end is completely unloaded that you'll get an idea of how far the swing arm drops.

Maybe a jack under the sump (bash plate removed) will show the clearance.

Peter

 

[MikeO]

How much more unloaded can you make it than lifting the rear wheel off the ground?

Mike

 

[GSmonkey]

.....I was bored quickly.

Measurements: Bottom of pillion footrest to mark on swingarm made by mainstand (diagonal) 212mm - with bike on mainstand.

Bottom of pillion footrest to top of mainstand with bike on sidestand 212mm!!

Gap between mainstand and swingarm whilst on sidestand 10mm.

So the swingarm compressors 10mm when on sidestand and when fully unloaded the swingarm will just kiss the mainstand hence the small indentations rather than deep grooves. Looking at the rubber against the pipe on the other side only half the rubber is on the lug on the pipe. The half in contact had compressed (by 0.5-1mm) so I span it round to the un-compressed side which will bring back the original clearance.

 

[TerryM]

Swinging arm replaced for this reason!

After finding this fault the whole of the swga was replaced at 1921 miles on 10th February this year without any quibble by Charles Hurst, Newtownabbey,

Just ask.

Terry

 

[GSmonkey]

I can't say it'd warrant a new swingarm....it has only just gone through the paint. Also I'd don't know if it does it with the standard can or just with the Remus.

 

[TerryM]

Just like mine Monkey. Let them show that the am ex is the cause. As dealers they do not care and just take their fee for doing the work. You can choose.
Terry