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1200 Sport 2V – yoke marking tank

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MotoGuthri View Drop Down
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    Posted: 10 Jul 2019 at 15:07
Wondering if I am alone in finding that the yoke on my 2007 V1200 Sport 2V touches (and eventually marks) the tank on full lock. 

The bars are aftermarket but the yoke is original. 

I have removed and reseated the tank, and found there isn’t a “wrong” way to seat it and still secure it with the bolts, so I’ve discounted the possibility of the tank being in the wrong position. It also very much appears to be a stock tank. 

Any thoughts/experiences welcome!
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stu View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote stu Quote  Post ReplyReply Direct Link To This Post Posted: 10 Jul 2019 at 16:05
It may be a know issue with Guzzi during the time and duration of manufacture.

Oh. No not alone Smile

Anyhoo. It may be that during manufacture, the bar turn to lock stop grew 2mm to account for the issue. Tank growth due to fuel.

There are posts relating to it.


No real fix other than adding width to that block in any manner possible.
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MotoGuthri View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote MotoGuthri Quote  Post ReplyReply Direct Link To This Post Posted: 10 Jul 2019 at 16:11
Gah! Thanks Stu (I think Big smile)

I might just file the yoke...
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Mike H View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Mike H Quote  Post ReplyReply Direct Link To This Post Posted: 10 Jul 2019 at 16:18
I was going to say, plastic tank swelling?

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Post Options Post Options   Thanks (0) Thanks(0)   Quote Brian UK Quote  Post ReplyReply Direct Link To This Post Posted: 10 Jul 2019 at 16:35
Yes, my Norge is the same, made worse by Helibars which give even less clearance at the front.

I filed the corners off carefully, now I can hear the yoke hitting the stop and not the tank.

You will probably find the bolt at the back is also difficult to get back in due to the tank swelling. I have also had to file that hole oval.

And Guzzi said the Norge/B1100/1200S were ethanol proof.

Brian.

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Post Options Post Options   Thanks (0) Thanks(0)   Quote c13pep Quote  Post ReplyReply Direct Link To This Post Posted: 10 Jul 2019 at 16:45
My 2007 1200 Sport had a similar problem but mine has been crashed, however I was able to cure it by moving the bars upwards because throttle cable bends were marking tank. Once the tank was back on I couldn`t get the bolt in because tank has expanded in all directions I followed Brians advice and filed a slot in the hole.
My first instinct was to drill the frame stop and put a self tapper in both sides to counteract the wear in the stop and the expansion of the tank, which may be a solution to yours.
It`s still a bit of a b....r though because worst case scenario is a new tank as a second hand one could be just as bad

CHRIS
you can`t have any fun in a straight line

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guzzigraham View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote guzzigraham Quote  Post ReplyReply Direct Link To This Post Posted: 10 Jul 2019 at 16:49
I think I have aftermarket bars on my V1200 Sport 2V (2008 reg), no idea what they are. These JUST miss touching the tank as they are but if I rotate them slightly in the clamps they can touch - don't ask me how I know !

I noticed when I was looking into options a couple of years back that one forum, (here or elsewhere), recommended alternative bars which help with comfort as some find it quite a reach over the tank. This also would aid clearance problems. I have seen Aprilia Mana bars mentioned and Renthal "Fatbars". Maybe my bike has one of these but who knows! I have a(really) vague memory that the Aprilia ones have a slot/hole in them as our Guzzis do. Don't know the truth in that. I'm thinking that its to 'pin' the throttle control when you fit it on? I could be dreaming it all up, maybe another inmate knows whether I'm talking any sense or not (I suspect I know the answer).

When I first got the bike I considered putting risers on which raised them about an inch (of course) and brought them back a little. I bought the them but also started liking the riding stance as it was. Reminds me of my old '70's Z1000 with Raask rear-sets and drag bars.... ahhh the nostalgia. If the problem bugs you and you think the risers would work, I still have mine unused knocking around somewhere.

Anyway - that's exhausted my knowledge... hope you can sort it. Maybe simply loosen and slightly rotate in the clamps and see whether that gives you an extra mm or 2
1200 Sport - new to me 2016
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Post Options Post Options   Thanks (0) Thanks(0)   Quote guzzigraham Quote  Post ReplyReply Direct Link To This Post Posted: 10 Jul 2019 at 17:01
Ah - found the thread on bars for V1200 Sports I was thinking of.

I hope it's not heresy to point to another forum, sorry if its a no-no on here

https://www.guzzitech.com/forums/threads/1200-sport-alternate-bars.7849/

Reading through the slot / hole I mentioned above was a red herring. It's that original bars are threaded at the ends to take the bar end weights Aprilia bars have similar - Renthals don't. Seems to be some details on what to do to modify Renthals.

Hope it helps
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Post Options Post Options   Thanks (1) Thanks(1)   Quote Brian UK Quote  Post ReplyReply Direct Link To This Post Posted: 10 Jul 2019 at 17:24
There is a lot of good information on Guzzitech.
All I would ask is that the reference is given to Guzzitech, just common decency - as you did.

(Just don't mention Guzzidiag there. LOL)
Brian.

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Post Options Post Options   Thanks (0) Thanks(0)   Quote MotoGuthri Quote  Post ReplyReply Direct Link To This Post Posted: 11 Jul 2019 at 10:55
Originally posted by Brian UK Brian UK wrote:

You will probably find the bolt at the back is also difficult to get back in due to the tank swelling. I have also had to file that hole oval.

This is reassuring – when I had the tank off to replace knackered gaskets on the cylinder heads I followed the service manual to the letter and still found this bolthole less than straightforward to locate.

While I absolutely love the bike and have no plans whatsoever to replace it, I am vaguely astonished that motorcycle engineers could be so ignorant as to green-light a petrol tank that swells when it comes into contact with petrol. You couldn't make it up because nobody would believe you.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote guzzigraham Quote  Post ReplyReply Direct Link To This Post Posted: 11 Jul 2019 at 11:27
I was the one who suffered a split tank and started a thread earlier this year about it. I fitted a new (to me) tank from an Italian breakers in the end as it wasn't repairable. Bit of research showed that the Nylon that Acerbis make the tank from is ethanol "resistant" below a certain temperature (22 deg C I think). So not great and what that really means is not too clear.

A previous bike of mine, a 2002 Triumph Tiger 955i, was worse in terms of swelling and took a lot of fiddling to fit back on. I used to only keep it off the bike for as short a time as possible. Worse, it was very liable to bubbling paint which loads of these have when you look around, or are repainted. At least the Guzzis' seem to resist this particular 'joy' for owners - never heard of bubbling paint on the plastic tanks.
1200 Sport - new to me 2016
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Post Options Post Options   Thanks (0) Thanks(0)   Quote motomike1400 Quote  Post ReplyReply Direct Link To This Post Posted: 11 Jul 2019 at 16:52
Originally posted by guzzigraham guzzigraham wrote:

I was the one who suffered a split tank and started a thread earlier this year about it. I fitted a new (to me) tank from an Italian breakers in the end as it wasn't repairable. Bit of research showed that the Nylon that Acerbis make the tank from is ethanol "resistant" below a certain temperature (22 deg C I think). So not great and what that really means is not too clear.

A previous bike of mine, a 2002 Triumph Tiger 955i, was worse in terms of swelling and took a lot of fiddling to fit back on. I used to only keep it off the bike for as short a time as possible. Worse, it was very liable to bubbling paint which loads of these have when you look around, or are repainted. At least the Guzzis' seem to resist this particular 'joy' for owners - never heard of bubbling paint on the plastic tanks.

My 2010 V7 Classic suffered the expanding tank syndrome. Worse still was the blistering paint which when burst stunk of petrol fumes. Replaced with another newer tank which I lined with ethanol proof tank fixer stuff (technical, eh?) which so far has done it's thing. 

V7 classic.
T'other brands .
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Brian UK Quote  Post ReplyReply Direct Link To This Post Posted: 11 Jul 2019 at 21:21
You wonder at motorcycle engineers using a tank which is not petrol proof? Wait till the half plastic fuel filter gives up. That was made by Mahle to be used with diesel.
Brian.

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Post Options Post Options   Thanks (1) Thanks(1)   Quote stu Quote  Post ReplyReply Direct Link To This Post Posted: 11 Jul 2019 at 21:33
Expanding tank is kinda handy on a touring bike. Guzzi forethought Embarrassed  
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Tris Quote  Post ReplyReply Direct Link To This Post Posted: 12 Jul 2019 at 07:41
Originally posted by MotoGuthri MotoGuthri wrote:

Originally posted by Brian UK Brian UK wrote:

You will probably find the bolt at the back is also difficult to get back in due to the tank swelling. I have also had to file that hole oval.

This is reassuring – when I had the tank off to replace knackered gaskets on the cylinder heads I followed the service manual to the letter and still found this bolthole less than straightforward to locate.

While I absolutely love the bike and have no plans whatsoever to replace it, I am vaguely astonished that motorcycle engineers could be so ignorant as to green-light a petrol tank that swells when it comes into contact with petrol. You couldn't make it up because nobody would believe you.

Yes there is evidence that the tanks expand, but I found that if you "lube the rubber bosses" Shocked it allowed the tank to slide into place and to push the bolt home easily

Just a thought
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