hlbeckley Posted March 4, 2016 Share Hi all Am on my second Onza on my rear after the schwabbles that came on my fulcrum red 44s leaked sealant through the wallsThe first Onza kept losing air, reseated them twice and the the tyre burst at speedNext Onza on rear keeps losing pressure no matter what I doFront is all good Any recommendations on better tyre choice please? Link to comment Share on other sites More sharing options...
MK Killer Posted March 4, 2016 Share Maxxis Ikon... the end Link to comment Share on other sites More sharing options...
hlbeckley Posted March 4, 2016 Share Thanks am off tyre shopping tomorrow Link to comment Share on other sites More sharing options...
Captain Fastbastard Mayhem Posted March 4, 2016 Share Hi all Am on my second Onza on my rear after the schwabbles that came on my fulcrum red 44s leaked sealant through the wallsThe first Onza kept losing air, reseated them twice and the the tyre burst at speedNext Onza on rear keeps losing pressure no matter what I doFront is all good Any recommendations on better tyre choice please?which onza, and which casing? If it was the Canis with CS casing, I'm not surprised - it's a very thin casing. The one that burst at speed may have had a bad bead - something that affects pretty much any tyre manufacturer every now and then. If you had to re-seat it twice, and then it blew off, I'd be almost certain that it was a case of the bead being weak at a certain point, causing the failure. It also may not be the tyre itself - I've run Onza Canis & Ibex (and I'm currently running an Onza on the front) without any hitch at all. What is your setup on the rim? Ghetto tubeless? Gorilla tape / duct tape / stans conversion? If duct tape, how many layers were on there? Is your valve intact? That's also a point where you may be losing air without knowing it... Link to comment Share on other sites More sharing options...
hlbeckley Posted March 4, 2016 Share They are canis with CS and yes the walls feel very thinStans conversion it looks like with that green ish tape and looks like two layers Link to comment Share on other sites More sharing options...
Captain Fastbastard Mayhem Posted March 4, 2016 Share They are canis with CS and yes the walls feel very thinStans conversion it looks like with that green ish tape and looks like two layersit may be a combination of the tape and the valve. Normally, those Onzas are good wrt keeping pressure. You may actually be better off by going a standalone tubeless valve (ryder or similar) and wrapping some duct tape around the rim (2 to 3 layers, valve put in AFTER you wrap the rim) or going full ghetto and getting a 26" tube and cutting it down the middle, then stretching it over the rim, mounting the tyre, seating it and inflating it then cutting off the excess. Both of those offer a better platform for the tyre than a Stans rim strip, which is pretty thin. Both also offer a better seal than the stans rim, and most importantly both are cheaper by far. Link to comment Share on other sites More sharing options...
BaGearA Posted March 4, 2016 Share also had this problem But i have an odd solution Go to a dirtbike shop they sell stuff called "survival" its gross greenish liquid but thicker like slime it works 5x as good as stans and I have not pumped up my wheels more than 2 times since trying it sunday will be one month. Bonus : -It is very cheap-it does not contain ammonia so it does not dry out as fast as stans Not saying stans suckes but this is working waaaayyyy better with my onza's (Canis and Ibex) its also a lot better than changing tyres , just try it before spending alot on new tyres good luck Link to comment Share on other sites More sharing options...
BenReaper Posted March 4, 2016 Share Also had this problem with certain Schwalbe an Onza tyres before,as mentioned above try a thicker type sealant than Stans or Joe's. Or rather go for a tyre with a thicker/stronger sidewall.For XC type riding Scwalbe's Snakeskin version are pretty good,Vitorria offer good options aswell and the tried and trusted Maxxis LUST range always offer a dependable solution. Go check out the thread on 'MTB Tyre Choices',you should find some more solid advice there. On the tubeless coversion subject,I prefer to do conversions with 1 turn of Gorilla tape and 2 turns off yellow tubeless rimtape over that and a loose tubeless valve.Depending on how loose the tyre fits you can add more turns of yellow tape. Link to comment Share on other sites More sharing options...
hlbeckley Posted March 4, 2016 Share Thanks all Link to comment Share on other sites More sharing options...
Beefy Posted March 4, 2016 Share Also had this problem with certain Schwalbe an Onza tyres before,as mentioned above try a thicker type sealant than Stans or Joe's. Or rather go for a tyre with a thicker/stronger sidewall.For XC type riding Scwalbe's Snakeskin version are pretty good,Vitorria offer good options aswell and the tried and trusted Maxxis LUST range always offer a dependable solution. Go check out the thread on 'MTB Tyre Choices',you should find some more solid advice there. On the tubeless coversion subject,I prefer to do conversions with 1 turn of Gorilla tape and 2 turns off yellow tubeless rimtape over that and a loose tubeless valve.Depending on how loose the tyre fits you can add more turns of yellow tape.Agree on the Maxxis LUST range. I am over 100kgs and I am not a smooth rider, never had issues with these tyres. If you are a weight weenie they are not light but tough as nuts. Link to comment Share on other sites More sharing options...
hlbeckley Posted March 5, 2016 Share Damn Onza tyres Pumped them rock hard and for first 20kms they were fineBit of rear end sway as the walls so thin but manageable Then on way back it all fell apart slipping into every groove the tyre just moves and slips and slides around and makes the bike very twitchyThen from bad to worse every tiny bump released air and goo so spent all my time stopping and pumping Long story shortMaxxis cross marks now fittedIkons walls felt very thin so once bitten, twice shy! Let's see how they goThanks for help all Link to comment Share on other sites More sharing options...
Captain Fastbastard Mayhem Posted March 5, 2016 Share Damn Onza tyresPumped them rock hard and for first 20kms they were fineBit of rear end sway as the walls so thin but manageableThen on way back it all fell apart slipping into every groove the tyre just moves and slips and slides around and makes the bike very twitchyThen from bad to worse every tiny bump released air and goo so spent all my time stopping and pumping Long story shortMaxxis cross marks now fittedIkons walls felt very thin so once bitten, twice shy! Let's see how they goThanks for help allthat's got nothing to do with it. You chose their lightest casing... If you'd gone with the normal c3 casing it'd have been fine. This is the problem with lightweight tyres, and choosing tyres based on how many grams you'll "save". You WILL have problems unless you're being followed by a backup van, or are on the xco course where a new wheel is just a lap away. FWIW I've been running Onza for a while now (canis and Ibex) but in the c3 & frc casings. Not a single problem. Same as the Schwalbe before. Snakeskin casings... no worries. If you're going to buy lightweight tyres, don't moan when they don't hold air as well as you thought they would... /rant off Link to comment Share on other sites More sharing options...
Heppy Posted March 5, 2016 Share Racing Ralph Snakeskin (rear). Wait for CWC special. Not high mileage but grippy enough with low rolling resistance. Link to comment Share on other sites More sharing options...
Captain Fastbastard Mayhem Posted March 5, 2016 Share BTW - still sounds as if you had a small leak somewhere along the way, as that is typical behaviour of a tyre when gradually losing pressure. The burping would have happened once you reached a certain pressure, no matter the tyre. Did you check the valve and all other things before you pumped them up this morning? Did you check that the valve stem may not have been a bit loose, and was therefore letting air out of the system very slowly? Did you replace the rim tape with duct tape or a full on ghetto conversion? I think (personally) that you've just decided that the tyres are at fault, when there's a whole list of other things it could be and you may in fact have the same problem with the Crossmarks. Link to comment Share on other sites More sharing options...
hlbeckley Posted March 5, 2016 Share Replaced rim tape, changed the valves, tighten everything, ride them for a good few kms hoping the goo would start working too!Once the pressure was low the burping was there, but even after I reinflated them as hard as I would on hand pump every bump yielded a burp!Was so pissed off by the time I got home all I could think of was changing the tyre [emoji39] Any ways this is where we are at now Link to comment Share on other sites More sharing options...
hlbeckley Posted March 5, 2016 Share that's got nothing to do with it. You chose their lightest casing... If you'd gone with the normal c3 casing it'd have been fine. This is the problem with lightweight tyres, and choosing tyres based on how many grams you'll "save". You WILL have problems unless you're being followed by a backup van, or are on the xco course where a new wheel is just a lap away. FWIW I've been running Onza for a while now (canis and Ibex) but in the c3 & frc casings. Not a single problem. Same as the Schwalbe before. Snakeskin casings... no worries. If you're going to buy lightweight tyres, don't moan when they don't hold air as well as you thought they would... /rant offPs I didn't deliberately choose light weight tyresI am not a pro looking to have a puke before every ride to save a few grams!Bike shop chose them for me!No grudge to the bike shop either, they have been awesome at helping me sort the problem out, it's just simply these tyres are not for me and I wouldn't recommend them based on my experience! P.S seems I am not the only one on the great wide inter web with this issue on Onzas! Happy that you got it right tho Link to comment Share on other sites More sharing options...
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