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Safety conscious centre-stands

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Baffler186
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PostPosted: 14:11 - 14 Apr 2014    Post subject: Safety conscious centre-stands Reply with quote

Just read on another forum that another guy has had his fingers mangled whilst cleaning a chain with the back wheel running (in 2nd gear I think). My CBF125 didn't allow this and would cut out if you tried selecting a gear whilst either side or centre stand were engaged.

So, I tested this out on my current bike and indeed it has no centre-stand cut-off.

My query is - do most bikes have a safety cut-off, or is it dependant on the age/manufacturer, or even the model?

And yes, I know one could use a paddock stand to overcome this if you wanted, but presumably it is a safety feature and not for any other reason?
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SQL
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PostPosted: 14:12 - 14 Apr 2014    Post subject: Reply with quote

Its natural selection
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map
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PostPosted: 14:15 - 14 Apr 2014    Post subject: Re: Safety conscious centre-stands Reply with quote

Baffler186 wrote:
...My query is - do most bikes have a safety cut-off...

IMO no, not on the centre stand.

The centre stand is thought of as allowing maintenance to be performed. So engine cut-off would seriously hinder that objective.

Centre stand is actually less secure/firm for parking the bike than side stand. So you have to be sure you really, really want to use a centre stand.
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Northern Monkey
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PostPosted: 14:20 - 14 Apr 2014    Post subject: Reply with quote

Same for me, engine cuts out when the side stand is down but not when the centre stand is down.

I guess this is because it's possibe to ride off with the side stand down, but not when the centre stand down.
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Tungtvann
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PostPosted: 14:31 - 14 Apr 2014    Post subject: Re: Safety conscious centre-stands Reply with quote

map wrote:
Centre stand is actually less secure/firm for parking the bike than side stand.

Mine definitely isn't.
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Baffler186
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PostPosted: 14:36 - 14 Apr 2014    Post subject: Re: Safety conscious centre-stands Reply with quote

map wrote:
Baffler186 wrote:
...My query is - do most bikes have a safety cut-off...

IMO no, not on the centre stand.

The centre stand is thought of as allowing maintenance to be performed. So engine cut-off would seriously hinder that objective.

Centre stand is actually less secure/firm for parking the bike than side stand. So you have to be sure you really, really want to use a centre stand.


Interesting point - I always thought centre stand was more secure, I've had a bike blow over on the side stand (in gales) but maybe that was being a noob and being on a slight slope it wasn't at a safe angle.

Also, how would that hinder maintenance? Why would you need the rear wheel spinning under drive to maintain it? Surely if it's chain maintenance you could still turn the wheel by hand and it would be "safer".
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Tamsin
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PostPosted: 14:46 - 14 Apr 2014    Post subject: Re: Safety conscious centre-stands Reply with quote

Tungtvann wrote:
map wrote:
Centre stand is actually less secure/firm for parking the bike than side stand.

Mine definitely isn't.


Agreed, in-fact I'm of the belief that my bike didn't have a side stand from new....
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sickpup
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PostPosted: 15:01 - 14 Apr 2014    Post subject: Re: Safety conscious centre-stands Reply with quote

map wrote:
Centre stand is actually less secure/firm for parking the bike than side stand. So you have to be sure you really, really want to use a centre stand.


Based on what?
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map
Mr Calendar



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PostPosted: 15:22 - 14 Apr 2014    Post subject: Re: Safety conscious centre-stands Reply with quote

sickpup wrote:
map wrote:
Centre stand is actually less secure/firm for parking the bike than side stand. So you have to be sure you really, really want to use a centre stand.
Based on what?

Triangles. Plus moving the centre of gravity.
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kramdra
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PostPosted: 15:32 - 14 Apr 2014    Post subject: Re: Safety conscious centre-stands Reply with quote

Side stands need a cut out for safety - it is to prevent riding off with the stand down, where it will catch the ground when turning left and throw you on your arse. It has nothing to do with maintenance or mashed fingers from utter stupidity. I do not know of any bikes with a centrestand cut out and if I owned one it would be disabled.


Plus the best way to clean rear sprocket and chain is to spin the wheel in reverse (by hand) and then you can get your fingers as close as you want quite safely. Use a cloth and paraffin.

I run my bikes in 6th gear, 120mph+ or so on the centrestand after oiling, to fling off excess.. the spray goes about 3 meters Thumbs Up
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i.p.phrealy
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PostPosted: 15:38 - 14 Apr 2014    Post subject: Re: Safety conscious centre-stands Reply with quote

kramdra wrote:

I run my bikes in 6th gear, 120mph+ or so on the centrestand after oiling, to fling off excess.. the spray goes about 3 meters Thumbs Up


...and how far will the bike go if it falls off the stand when you do that? Thinking
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c_dug
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PostPosted: 15:43 - 14 Apr 2014    Post subject: Reply with quote

About as far into the nearest wall I'd imagine Laughing
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P.addy
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PostPosted: 15:48 - 14 Apr 2014    Post subject: Re: Safety conscious centre-stands Reply with quote

i.p.phrealy wrote:
kramdra wrote:

I run my bikes in 6th gear, 120mph+ or so on the centrestand after oiling, to fling off excess.. the spray goes about 3 meters Thumbs Up


...and how far will the bike go if it falls off the stand when you do that? Thinking


He doesn't listen so there is no point advising him, just wait for him to work it out.
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barrkel
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PostPosted: 15:51 - 14 Apr 2014    Post subject: Re: Safety conscious centre-stands Reply with quote

map wrote:
Centre stand is actually less secure/firm for parking the bike than side stand. So you have to be sure you really, really want to use a centre stand.

This one is very dependent on the bike geometry. The CoG will be lower on a sidestand, but depending on the length of the sidestand and its relative balance (e.g. preload on shocks, shortened sidestand for use with a lowering kit) it may be biased to one side or the other. If the sidestand is short, the distance between the wheels and the sidestand ground point may be shorter than with a centrestand. And if the ground already has a slope, the centrestand may be better if the CoG is pushed towards the side it has less tipping point leeway on.
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Hugh Farking Cant
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PostPosted: 15:55 - 14 Apr 2014    Post subject: Re: Safety conscious centre-stands Reply with quote

sickpup wrote:
map wrote:
Centre stand is actually less secure/firm for parking the bike than side stand. So you have to be sure you really, really want to use a centre stand.


Based on what?


A flat, level, hard surface (according to the owner's manual)



I'll get my coat ! Laughing
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The Disapproving Brit
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PostPosted: 16:03 - 14 Apr 2014    Post subject: Re: Safety conscious centre-stands Reply with quote

Baffler186 wrote:

Also, how would that hinder maintenance? Why would you need the rear wheel spinning under drive to maintain it? Surely if it's chain maintenance you could still turn the wheel by hand and it would be "safer".


Pretty much any work where you might want to mess with gears while the bike is stationary. The first example that comes to mind is a loose neutral switch connection, but there are many more.
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Baffler186
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PostPosted: 17:00 - 14 Apr 2014    Post subject: Re: Safety conscious centre-stands Reply with quote

TheDisapprovingBrit wrote:
Baffler186 wrote:

Also, how would that hinder maintenance? Why would you need the rear wheel spinning under drive to maintain it? Surely if it's chain maintenance you could still turn the wheel by hand and it would be "safer".


Pretty much any work where you might want to mess with gears while the bike is stationary. The first example that comes to mind is a loose neutral switch connection, but there are many more.


yeah hadn't thought of that
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sickpup
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PostPosted: 18:26 - 14 Apr 2014    Post subject: Re: Safety conscious centre-stands Reply with quote

map wrote:
Triangles. Plus moving the centre of gravity.


Hell of a lot easier to lift a bike off its side stand than it is to push a bike sideways when its on its centre stand.
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map
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PostPosted: 18:39 - 14 Apr 2014    Post subject: Re: Safety conscious centre-stands Reply with quote

sickpup wrote:
map wrote:
Triangles. Plus moving the centre of gravity.
Hell of a lot easier to lift a bike off its side stand than it is to push a bike sideways when its on its centre stand.

You are mixing two different things to make a point. Try pushing a bike off side stand (side movement). Lifting bike off centre stand, so centre of gravity falls outside the narrow base and it will topple.
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Pete.
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PostPosted: 18:52 - 14 Apr 2014    Post subject: Reply with quote

If a bike is on level ground it's much more stable on the centre stand. Toppling directly sideways isn't the most common way of crashing off the stand, rolling forwards is. You can very easily roll a bike off the sidestand but not easily at all off the centrestand.
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trevor saxe-coburg-gotha
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PostPosted: 21:00 - 14 Apr 2014    Post subject: Reply with quote

But if it *is* a matter of trying to push the bike over sideways then obviously it's MUCH easier if it's on the centre stand.
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Kickstart
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PostPosted: 21:13 - 14 Apr 2014    Post subject: Reply with quote

Hi

Suspect it depends on the design of the bike. Early Aprilia AF1 left the bike so close to upright that almost any stand would be more stable.

All the best

Keith
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SQL
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PostPosted: 21:17 - 14 Apr 2014    Post subject: Reply with quote

the sidestand on the Derbi Gpr is the opposite i could probably get my kneedown while on the stand
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gavbriggs
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PostPosted: 21:17 - 14 Apr 2014    Post subject: Reply with quote

The centre stand invariably takes the rear wheel off the ground, starting and running the machine at worst will only spin the rear wheel in the air and thus not allow the bike to propel itself forward. Unless your an idiot and you put the bike in gear and drive it off the centre stand as some plonkers did in their teens!

The side stand has both wheels on the ground, thus allowing the machine to propel itself off the stand should an attempt to start it be made whilst in gear(most machines now have a clutch switch also) or should it be accidentally knocked into gear.

The likelihood of damage or injury from a running machine is therefore greater with the use of the side stand rather than the centre stand. To obtain a dangerous occurrence either method would require the use of at least one fuckwit.

There is also the danger that side stand could cause death if cornering at speed whereas a centre stand by design would tend to brush over obstacles although some do seem very close to the ground when the machine is leaning in corners!
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Tungtvann
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PostPosted: 21:24 - 14 Apr 2014    Post subject: Reply with quote

Every bike is different. But 100%, my FZ6 is more stable on its centre stand than it is on its side stand. I even made a video demonstrating the fact, but rewatching it makes me sound like a bit of a dick, so you'll just have to take my word for it.
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