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Post by daveglos on Jan 11, 2020 16:46:51 GMT
Anyone found a good and inexpensive way to get around porous front rim on my Divvy 600?
I had tyre replaced as it was flat, suspecting a puncture. A couple of weeks later it was flat again, fitter said he wouldn't use rim seal on bike wheels!
I got hold of some and after breaking beads, cleaned surfaces and applied water based bead seal. It's been fine for 6 months and guess what... This morning pulled bike out and steering stiff. Square one comes to mind. Most s/h rims will be similar. Any ideas from the deep pool of accumulated wisdom out there?
Dave
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Post by Beehill on Jan 12, 2020 10:36:56 GMT
Sorry Dave, cant really help. Dealing with a probably porous wheel on back of my 900. Looking forward to replies.
Andy.
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Post by m40man on Jan 12, 2020 11:30:57 GMT
I’ve had this prob before. But it appeared due to a build up of crud & the odd ding on the rim. Sorted by a good clean-up with scotchbrite, so the finish was nice & smooth to the touch.
Happy to try & help if either of you fancy popping over - we’d take the tyre off & give the rim a good clean-up, refit & see if sorted. I have the tyre changing kit & compressor to make this easier. Message me if you fancy it, OX12 postcode area.
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Post by Doom on Jan 12, 2020 12:20:15 GMT
I am with Martin on this one. The only time it happened to me a good fettling of the rim edges fixed it.
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Post by Beehill on Jan 12, 2020 14:38:00 GMT
When the tyre was fitted it was cleaned with a wire brush and leak seal applied to rim and valve hole. But still a slight deflation over time. I'll stick with it for a while but maybe pop over to Wantage at some stage. Could do with a run out.
Andy.
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Post by m40man on Jan 12, 2020 18:47:42 GMT
It helps if you can identify where any leak occurs. The bubbles can be tiny & the wheel a bit big to submerge, but worth having a go.
Best then clean the bath before you get found out 😎.
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Post by daveglos on Jan 24, 2020 20:23:37 GMT
Seems mechanics have different ideas. I passed by the bike shop on Watermoor Lane in Cirencester with the wheel in my van, I was going to ask them to dismount the tyre so I could clean up the rim better. He did then showed me the aluminium oxidation build up which leads to poor seal. He said we do these all the time and promptly ran it around on a bench mounted wire wheel to polish the sealing surfaces on the rim. When clean, and after I cleaned the tyre, he remounted it and I reckon it will be fine now. Thanks to a cracking bike shop!
So just wire wheel the rims to remove the oxidation. Sorted!
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Post by bobh on Jun 1, 2020 9:59:05 GMT
For some reason I missed this thread earlier.
I've had a similar problem on the front wheel of the Fazer8. I did clean up oxidation in the sealing area with wire wool or fine emery (can't remember which) and that cured it for a while.
But after another winter the problem recurred. So I cleaned it up again and then repainted the area. That stayed up for a while, then blow me (pun alert), the tyre started to go down again at around 1-2 psi per day. I was all set to invest in some rim sealant, and had some useful advice from the local garage on the stuff, which apparently they use a lot on alloy wheels. But this time it turned out to be a very tiny puncture in the tread area - which did take a bit of finding. As the tyre was nearly worn out anyway I've replaced it, and so far so good.
The wheels on this bike are gold, and I wonder if that finish isn't as corrosion-resistant as the normal black. The first time it happened the bike was only about 5 years old.
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