alexwc46 Posted December 11, 2013 Share So here's my problem. About a year ago I bought a second hand bicycle with a set of Mavic SLR wheels. The previous owner did a ghetto repair on the rear wheel which I think was cracked. I've been riding with a tubeless setup on this wheel with absolutely zero issues. Today I decided to replace the tyres with a new set of crossmarks and I am now unable to inflate the tyre more than 1 bar and the air and stans starts leaking out of the repair job. I know the logical thing would be to replace the wheel but unfortunately its not financially viable. It looks pretty siff but I don't really care, I just want to ride my bike. Now my question is, what would be a good product to use to repatch the rim? Cheers Link to comment Share on other sites More sharing options...
ThePubSA Posted December 11, 2013 Share When in doubt .. http://www.toolandhardware.co.za/media/catalog/product/cache/1/image/9df78eab33525d08d6e5fb8d27136e95/b/p/bp080-bi-01.44.jpghttp://www.pratley.com/images/BulldozerChair.jpg Hairy 1 Link to comment Share on other sites More sharing options...
gummibear Posted December 12, 2013 Share What's the inside of that rim look like? Link to comment Share on other sites More sharing options...
droo Posted December 13, 2013 Share Best practice - new rim. Bodge - inflate with the dodgy bit at the bottom so the sealant takes up the slack. Link to comment Share on other sites More sharing options...
Hairy Posted December 13, 2013 Share When in doubt ..http://www.toolandhardware.co.za/media/catalog/product/cache/1/image/9df78eab33525d08d6e5fb8d27136e95/b/p/bp080-bi-01.44.jpghttp://www.pratley.com/images/BulldozerChair.jpg Best practice - new rim. Bodge - inflate with the dodgy bit at the bottom so the sealant takes up the slack. As per above ... if you have to do this on a shoe string budget then go Ghetto Tjoooblesss with a 20" tube. ThePubSA 1 Link to comment Share on other sites More sharing options...
gummibear Posted December 13, 2013 Share As per above ... if you have to do this on a shoe string budget then go Ghetto Tjoooblesss with a 20" tube. The SLR is a tubeless rim so shouldn't need ghetto. If it's leaking then the rim is cracked. Link to comment Share on other sites More sharing options...
ThePubSA Posted December 13, 2013 Share The SLR is a tubeless rim so shouldn't need ghetto. If it's leaking then the rim is cracked.lol gums The previous owner did a ghetto repair on the rear wheel which I think was cracked. I've been riding with a tubeless setup on this wheel with absolutely zero issues. Today I decided to replace the tyres with a new set of crossmarks and I am now unable to inflate the tyre more than 1 bar and the air and stans starts leaking out of the repair job. Link to comment Share on other sites More sharing options...
Hairy Posted December 13, 2013 Share The SLR is a tubeless rim so shouldn't need ghetto. If it's leaking then the rim is cracked.Hence the Tjooobbb Link to comment Share on other sites More sharing options...
camelman Posted December 13, 2013 Share If the inside of the rim/bead is rough from the repair job, take some sand paper or a very fine file and try to smooth it out. Tires can mould around a ding or a dent but when the inside is rough the tire cannot seat properly and the air comes out. Even if the sealant where to seal it now, it might blow out later if its not smooth Otherwise a new rim Edited December 13, 2013 by camelman Link to comment Share on other sites More sharing options...
porqui Posted December 13, 2013 Share If cracked I would think very hard about riding it - could be einas if it fails on you. Edited December 13, 2013 by porqui Link to comment Share on other sites More sharing options...
ThePubSA Posted December 13, 2013 Share Dont just stick a blob of the pratleys,tub of water and smear it parallel and smooth wif your finger.Edge it with insulation tape first and remove before dry for a clean finish. Hairy 1 Link to comment Share on other sites More sharing options...
Salty Posted December 13, 2013 Share Would Q-Bond also not be an option. With the granules that you add in it makes the joins pretty strong. It is quick and you can sand it down after...... Have never tried it on alu though.There are some other products in motor-car shops used for repearing cracked sumps and so on - generally metal specfic glues..... Link to comment Share on other sites More sharing options...
alexwc46 Posted December 13, 2013 Share I did the repair yesterday with some pratleys and it is working nicely again. Went for a ride and held up perfectly. Thanks for the advice. I'm gonna just ride on this wheel until it decides to give up :-) ThePubSA 1 Link to comment Share on other sites More sharing options...
clyde79 Posted December 13, 2013 Share I did the repair yesterday with some pratleys and it is working nicely again. Went for a ride and held up perfectly. Thanks for the advice. I'm gonna just ride on this wheel until it decides to give up :-)Good work! If that weld is even average then the wheel should hold up fine. It might just leak a bit of sealant and air past the rough edge where the tyre meets the rim. I like that the decal was stuck over the weld Link to comment Share on other sites More sharing options...
ThePubSA Posted December 13, 2013 Share Would Q-Bond also not be an option. With the granules that you add in it makes the joins pretty strong. It is quick and you can sand it down after...... Have never tried it on alu though.There are some other products in motor-car shops used for repearing cracked sumps and so on - generally metal specfic glues.....Q bond better for rubber/plastics. Link to comment Share on other sites More sharing options...
alexwc46 Posted December 13, 2013 Share Good work! If that weld is even average then the wheel should hold up fine. It might just leak a bit of sealant and air past the rough edge where the tyre meets the rim. I like that the decal was stuck over the weld The previous guy actually did the weld over the sticker, I think he must have used the same pratleys that I did. It's the wonda fix high strength flexible which is slightly see through. I've put the wheel in some water and it's airtight so I'm pretty stoked ... Hairy 1 Link to comment Share on other sites More sharing options...
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