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V50 MONZA rebuild

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Ken-Guzzibear View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Ken-Guzzibear Quote  Post ReplyReply Direct Link To This Post Topic: V50 MONZA rebuild
    Posted: 14 Jan 2019 at 11:45
only just read this however I have a V50 frame with log book if you need one you would have to collect it just also if you are on facebook contact Tim Hicks he very successfully put a 750 engine into his Monza and has just ordered an 840 big bore kit he is very well versed in Monza fiddling about with .....if the frame is of use pm me with offer no reasonable offer refused , there are a fair few engine parts inc crankcases the frame is currently on sorn and to be fair it is a pain to keep doing would rather it be used
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Chris950s Quote  Post ReplyReply Direct Link To This Post Posted: 11 Jan 2019 at 10:27
Originally posted by Jim Mac Jim Mac wrote:

Pics as you go along would be good for us voyeurs
and I thought you were Scottish, Jim Wink
Chris and Karen - Essex
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Jim Mac Quote  Post ReplyReply Direct Link To This Post Posted: 11 Jan 2019 at 09:15
Pics as you go along would be good for us voyeurs
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Post Options Post Options   Thanks (0) Thanks(0)   Quote chrisshrops Quote  Post ReplyReply Direct Link To This Post Posted: 10 Jan 2019 at 14:56
get a bead of weld put round them they should pop out then 
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Post Options Post Options   Thanks (0) Thanks(0)   Quote c13pep Quote  Post ReplyReply Direct Link To This Post Posted: 22 Nov 2018 at 14:07
Update to ABS nose cone repair, Plastic weld worked a treat however we experimented with some plumbers solvent joint weld that also did the job and is available from Screwfix etc.
Another bit of the original bike saved so best result all round

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

Monza project
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Post Options Post Options   Thanks (0) Thanks(0)   Quote c13pep Quote  Post ReplyReply Direct Link To This Post Posted: 15 Nov 2018 at 13:36
Thanks for that Brian, unfortunately our model shops have long gone but have ordered Plastic Weld online. The fibre glass literally fell off when I undid the mounting bracket and had not properly adhered to the fairing itself!!!
I am fairly certain the nose cone is made from ABS and that it`s original, so restoration was the only option as the pattern ones are fibre glass and look to be a tad flimsy

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

Monza project
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Brian UK Quote  Post ReplyReply Direct Link To This Post Posted: 14 Nov 2018 at 21:36
First of all are you certain it's ABS?

Go to your nearest model shop and buy a bottle of Plastic Weld.  You can also buy sheets of ABS to strengthen behind the breaks.

For a crack, try to ensure it's all as clean as possible, then with a drop of the liquid on the end of a flat blade screwdriver, run along the crack and the liquid will seep in. You will have to go over the crack again most likely to ensure enough of the liquid has gone into the crack. Do the same on the back. Then hold the crack together for a few minutes.
The crack will weld up and be almost invisible.

I have repaierd larger breaks in a similar way but adding bits of ABS sheet behind, again put plenty of the liquid between the parts to be welded and hold them together.

You will probably have to do your best to remove any fibreglass still sticking to the ABS and have a clean surface.

I always now have a bottle of this in the shed, and have repaired loads of plastic bits with it.

It won't touch polypropylene though.
Brian.

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Post Options Post Options   Thanks (0) Thanks(0)   Quote c13pep Quote  Post ReplyReply Direct Link To This Post Posted: 14 Nov 2018 at 19:00
Advice needed on repairing ABS nose cone that has cracks in it.

The Monza nose cone has been repaired several times previously but none are what could be described as either good or permanent (use of fibre glass). Has anyone successfully repaired ABS panels on the forum, all suggestions greatly appreciated
CHRIS    
you can`t have any fun in a straight line

Monza project
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Post Options Post Options   Thanks (0) Thanks(0)   Quote c13pep Quote  Post ReplyReply Direct Link To This Post Posted: 17 Oct 2018 at 09:23
Does anyone have any pictures or a link to a schematic of the dash + headlight mountings on a MONZA. I think I have all the fittings but am wondering whether there are rubber bushes for the dash mounting bracket where they fit on the forks or are they just trapped between headstock and headlight bracket bushes.
CHRIS
you can`t have any fun in a straight line

Monza project
BMW R1150RT
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Post Options Post Options   Thanks (0) Thanks(0)   Quote George S Quote  Post ReplyReply Direct Link To This Post Posted: 13 Oct 2018 at 11:54
Had same problem with headstock bearings on 1000s and that was only 28 years old. When all else fails dremel essential tool 
George
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Post Options Post Options   Thanks (0) Thanks(0)   Quote c13pep Quote  Post ReplyReply Direct Link To This Post Posted: 13 Oct 2018 at 10:07
On this occasion heat didn`t work, neither heat gun or blow torch made any difference, but these bearings will have lain untouched for 37 years so not sure what bearing lock would have been available then.
CHRIS
you can`t have any fun in a straight line

Monza project
BMW R1150RT
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Post Options Post Options   Thanks (0) Thanks(0)   Quote George S Quote  Post ReplyReply Direct Link To This Post Posted: 12 Oct 2018 at 21:40
By the way if you apply heat to loctite it will loosen up. Powerful air dryer will do the job if worried about paint. To avoid pain and suffering don't tell the wife!
George
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Post Options Post Options   Thanks (0) Thanks(0)   Quote George S Quote  Post ReplyReply Direct Link To This Post Posted: 12 Oct 2018 at 21:34
If it's not very good it's not cheap. 
Stay with Loctite Various products in different strengths Great product.
George
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Jerry atric Quote  Post ReplyReply Direct Link To This Post Posted: 12 Oct 2018 at 20:36
On the subject of bearing lock. I know it's obvious (NOW!) I bought some on Ebay, not Loctite but a lot cheaper in exactly the same bottle but it really isn't very good. Just a tip to anyone needing bearing lock.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote c13pep Quote  Post ReplyReply Direct Link To This Post Posted: 12 Oct 2018 at 16:34
Couldn`t manage to dislodge powder coating from threads so took advice from local powder coating company who said to retap the threads as the only sure way of not causing damage.
The swing arm bearings in the gearbox casing did cause major headaches with even my blind hole bearing puller unable to shift them. After watching various videos of bearing removal including using bread, plasticine, wet kitchen roll I ended up using a miniature cutting disc in the Dremmel to remove inner race before finally using puller and slide hammer to remove outer race.
It appears MG use Loctite on their bearings, which after 37 years sets like super glue but at least I`m progressing, albeit slowly

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

Monza project
BMW R1150RT
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