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Twinpot
L plate Joined: 29 Oct 2017 Location: Lincs Status: Offline Points: 7 |
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Posted: 11 Nov 2017 at 17:49 |
How reliable are the chain adjuster markings on the swingarm for a gen2 RSV. The chain adjuster markings on mine are both equal, but using a chainline guide the chain seems slightly out of whack and bringing the chain inline with the correct chain slack, the chainbolt adjuster on the right hand side is closer to the end of the swingarm than it is on the left hand side. This is my first season with Aprilia so I have limited knowledge and call on the voices of the more experienced.
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constant
Premium Member Joined: 27 Jun 2014 Location: south london Status: Offline Points: 1060 |
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i had my gen 1 up at griffs the other month and asked lewis about this he said the marks are 1 to 2 out and to measure from the end of the adjuster block to the end of the swing arm
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constant
Premium Member Joined: 27 Jun 2014 Location: south london Status: Offline Points: 1060 |
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forgot to add the reason is the swing arms are the same length either side (obviously) but they hand stamp the adjuster markings by hand and in most cases after they been to lunch which involves a small amount of win and this from people who have worked and toured the factory
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426hemi
Premium Member owner of the big bore! Joined: 30 Mar 2012 Location: cannock Status: Offline Points: 5676 |
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My gen1 is about half a mark out setting it up with a chain laser tool.
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Spoonz
Admins Group Joined: 11 Feb 2008 Location: North Devon Status: Offline Points: 10726 |
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Considering the frames and swingers are made by verrlichi and come to Aprilia as a finished item I find pissed aprilia workers hard to believe.
But in general I wouldn’t take the marks as gospel on any make bike as mass production ain’t that accurate. |
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redratbike
Moderator Group The Collector Messiah Joined: 07 May 2008 Status: Offline Points: 16146 |
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Always measure never rely on the markings
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www.apriliaperformance.co.uk www.apriliaforum.co.uk www.apriliaownersclub.co.uk |
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Tifa
Moto GP Alien I am Sparticus, only uglier Joined: 21 Apr 2009 Status: Offline Points: 1972 |
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Hahahahahahaaa! You'll be telling us that they don't grease bearings next... Markings are a bit of a lottery in my limited experience. I've got a lazer thingy which is pretty good, but I can do it almost as well by eye and looking at the chain travel, and by actually 'listening' to it? That last bit does work..sometimes...could be voodoo though...
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legend88
Premium Member Joined: 18 Aug 2013 Location: Newcastle Status: Offline Points: 6598 |
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If the chain is in good condition and well lubed this does work up to a point. You have to be careful where you measure to/from. The end of the swing arm would not be my choice as it would never be considered a 'critical' surface/position in either the design or manufacturing process (It's just a point that 'hangs somewhere out there'). Hence it would not be a controlled surface and could vary significantly, at least significantly in relation to the accuracy we look for in chain alignment. Neither is the end of the adjuster block. The only true check is front sprocket to rear sprocket but swing arm pivot to rear axle is in almost all cases (Unless frame or swing arm is distorted) very accurate. And remember, the longer the distance you measure over the less - proportionally - any error matters. That doesn't mean I always use these methods mind |
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Twinpot
L plate Joined: 29 Oct 2017 Location: Lincs Status: Offline Points: 7 |
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Thank you all for the replies. You would have thought that you could take the chainline markings on the swingarm as gospel, but clearly not. In my naivety I was kinda hoping that Aprilia would have had it spot on, meaning no faffing about with chainline guides or steel rules. It is I suppose situation normal no matter what brand is stamped on the tank. The sun is shining and the roads are dry in Lincs, so I'm taking the RSVR out for a final spin before it gets put to bed and the VFR carries me through winter. I will put trust in my own chainline adjustment and not worry about the swingarm markers..........if I can.....Doh!
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FTM
Moto GP Alien Joined: 04 Apr 2016 Location: Lovedean Status: Offline Points: 381 |
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I've never ever lined up chains or sprockets I always use the adjusters to get the right chain tension and the tyres to run parallel, an old 6ft level works for me to parallel the tyres. It's always worked for me One day I'll make a wheel aligning tool out of two 6ft levels and a couple of threaded rods.
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legend88
Premium Member Joined: 18 Aug 2013 Location: Newcastle Status: Offline Points: 6598 |
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A couple of axle stands and a ball of string will do this fine. But remember, wheels running parallel doesn't necessarily mean the chain is running true. With a straight frame (And everything else) and everything assembled correctly that will generally be the case but they are two separate things and one does not always follow the other. And if you find that one is true and the other isn't well then you have a decision to make. |
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FTM
Moto GP Alien Joined: 04 Apr 2016 Location: Lovedean Status: Offline Points: 381 |
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Yes I realise that but with the correct chain and sprockets fitted everything should line up properly, unless a spacer has been misplaced. I also think If something has to be out of line I'd rather it be the chain than the wheels. But saying that didn't some of the earlier BMW GS's have the wheels out of line from new. I know some people who fit RC45 wheels to RC30's run them a couple of mm out of line because the rear tyre hits the chain otherwise.
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redratbike
Moderator Group The Collector Messiah Joined: 07 May 2008 Status: Offline Points: 16146 |
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Little kit like this covers all your needs and then some to assist in making sure both sides are the same
https://m.ebay.co.uk/itm/Sealey-Measuring-Tool-Set-with-Vernier-Calipers-Depth-Gauge-Dividers-Rule-6Pc/362082747035?epid=1205470634&hash=item544dd0429b:g:a90AAOSwQWlZot7J |
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www.apriliaperformance.co.uk www.apriliaforum.co.uk www.apriliaownersclub.co.uk |
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legend88
Premium Member Joined: 18 Aug 2013 Location: Newcastle Status: Offline Points: 6598 |
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Yeah, that's what I was getting at really, only you can decide which you want to prioritise. |
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