The Ouzo Posted February 17, 2018 Posted February 17, 2018 that sound indoors is a real ear ringer. before my wife was my wife and was only a GF I was trying to get her into riding.Just got her a cheapie MTB and was putting slicks on for her in the living room. Put everything back together and was busy pumping the tyre up with a floor pump. I must have pinched the tube somewhere because as it got to around 50psi there was an almighty bang that sent both of us jumping into the air.
milky4130 Posted February 17, 2018 Posted February 17, 2018 Yeah, my hand was swollen for a day or two. So, the tyre is rated to 60 psi, which is 4.1 bar, therefore, I thought 3.5 was safe. The gauge of the garage could be wrong, although I highly doubt that. The consequences of over inflating a car tyre could be much more severe than just a swollen finger. But at this stage, like I said, there's no way for me to prove that I did not over inflate the tyre. I probably would've expected the tyre to fail before the rim, but it seems that's just me. At this stage, it is what is is... a destroyed rim. Sent from my VKY-L09 using Tapatalk yeah my tire also showed 3.7bar max but those crest & am classic rims are so paper thin it just disintergrated, one hard bang at the join & 3 bar is enough to send that rim to the moon.
Squier Posted February 17, 2018 Author Posted February 17, 2018 3.5 bar is over inflated.....as is 3. Rim is probably rated lower than that, or very close to. *** funny story, but you did it to yourself. ????Yeah, look, I won't do it again. School fees and all that... Still, I don't believe a rim should explode at 3.5 bar. I do not have any scientific evidence to support that though. Sent from my VKY-L09 using Tapatalk
dasilvarsa Posted February 17, 2018 Posted February 17, 2018 I agree it should not explode at 3.5 bar.I've taken Cheap and Nasty 19 mm MTB Rims to way beyond that with tubes in. It could also have been a chemical reaction that caused the pressure to rise to many bar. Was a chemical used to clean the rim or the Tyre ? BTW I'm using and Ardent Race in Front and it's a very difficult Tyre to Put on and take off the rim, You actually have to use force. I still run tubes
Amberdrake Posted February 17, 2018 Posted February 17, 2018 The rims do have a Pressure rating of their own. Each rim has different rating depending on how thin the material. The more weight weenie the rim the less punishment it can handle usually. Those old el cheapo rims are thick and heavy....You can check website for your rim to see max pressure.Remember there is a difference between max cold air pressure and hot air pressure.
MrJacques Posted February 17, 2018 Posted February 17, 2018 Not sure which model yours is, but this is for the Fulcrum Red Metal 29 XL. Tyre width in the left column. Be glad it wasn't a scuba tank, you probably wouldn't be alive to tell the story.
Skylark Posted February 17, 2018 Posted February 17, 2018 Glue remover?https://www.ctm.co.za/glue-remover-1l-product.html http://www.genkem.co.za/genkem/index.php/diy-with-genkem/item/contact-adhesive-cleaner Not sure what it would do to the fabric tho then again you can try sunlight liquid directly onto it or even doom.The Genkem Contact Adhesive Cleaner in that link is what I am referring to.The TFC Glue & Bitumen Remover - 1 Lt for R180 in the other link could also work becuase if it can remove carpet tile adhesive it must be pretty bad ass stuff. Don't think either will intrinsically damage any automotive fabrics itself, they are generally very hard wearing, but it may make the backings de-laminate if you apply too much and it soaks through. Either way I doubt either will totally remove the effects of the Stans application but they will radically reduce the appearance with enough application and elbow grease.
DirtyDan Posted February 17, 2018 Posted February 17, 2018 Tuesday nights in Claremont bru! Always Massive. On a more serious note, I just thought I was lucky that it happened when it did. If one looks at the online forums, there are many guys who have had MAJOR issues with Maxxis tires on Stans Crest rims. Blow offs half way down hills etc. I sold the stans wheels quickly after that and bought a pair of Shimano XT wheels. You can mount anything on them and pump them up to whatever pressure and they fine.Older crests or the newer MK3's?
Tromp Posted February 17, 2018 Posted February 17, 2018 Slightly on the side ( sorry ) , I have often wondered if Stans sealant stuff up pressure gauges ?
Squier Posted February 19, 2018 Author Posted February 19, 2018 Slightly on the side ( sorry ) , I have often wondered if Stans sealant stuff up pressure gauges ? I wouldn't be surprised. Nasty stuff. Great for wheels, nasty for everything else.
dave303e Posted February 19, 2018 Posted February 19, 2018 I wouldn't be surprised. Nasty stuff. Great for wheels, nasty for everything else.try getting it off your dashboard after the wheel goes boom in the car
Paul Ruinaard Posted February 19, 2018 Posted February 19, 2018 Yep - happened to me twice. First time i was bending over an MTB wheel pumping it with a compressor when it blew. I was deaf for days and looked like something out of a Bukkake movie - i had latex in my hair and was generally very pissed off. It was in the early days of the first tubeless before the rims came with hooks so fortunately it was at lower pressure. Then the next time was just recently when i had a slow puncture in the rear wheel of my Cyclocross bike, which i decided to bomb with an MTB bomb whilst riding in the cradle. It blew the tire right off the rim (35mm CX tyre ) which i probably over pressured, cracked the rim and made me walk home carrying the bike. In carbon shoes. From the traffic circle to Valverde. Fortunately a good samaritan collected me and took me to my car. I also once did it in the garage with the same CX bike (I was running road tubeless ghetto conversion) when it blew off about 4 hours after i pumped it up for the next mornings ride. The explosion sounded like a gunshot in the garage. The dogs all went crazy and my wife thought it was an attacker. She was very the moer in and didnt sleep that night cause she was so stressed.
JCA12 Posted February 19, 2018 Posted February 19, 2018 Saw a similar thing at a mtb race. Bike was in the sun. Crowd of people very close to the bike. Was a Crossmark tire. Not sure re rim. The heat must have expanded the tire. Tire blew right off the rim. Was quite funny seeing lots of tired and sore people scrambling to get away from the sound.
Headshot Posted February 19, 2018 Posted February 19, 2018 I dont think its ever necessary to pump a tyre that hard. Hardest I have ever pumped a tubeless set up is 35psi or so. Needless to say, I've never destroyed a tyre or a rim.
Letum911 Posted February 19, 2018 Posted February 19, 2018 On a similar note, more theoretic tho. If the rim does have a max pressure of 3 bar, do you then buy tyres to suite the rim? I had a set of Black Panther's on my 26" MTB, only at 3.2 bar in the back did I get rid of the tyre roll. On my 29'er I have a Vittoria 2.35 (I think) in the front, at 2 bar I pinged the rim twice (granted I picked a horrible line through a rock garden).
Warren_G Posted February 20, 2018 Posted February 20, 2018 No, I've underestimated the stickyness of Stan's. I'm not even getting it off the outside of the car! Sent from my VKY-L09 using TapatalkI have a cycling top that permanently has a Stan's spray pattern from a front puncture that wouldn't seal, 3yrs ago [emoji23] Sent from my SM-G930F using Tapatalk
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