nukezero
10 kW
This is the second time today, that I blew my tire tube in less than a week.
The first tube, had a strange hole in the inner side (facing the rim) but I found that the spoke/rim did not have anything sharp to suggest how it got there. The first time I got my Mac motor kit, within 5 minutes was when the tire went flat.
Next up, I upgraded to Slime's 26 in. inner tube from walmart. I got a good 40-50 miles out of it then today, while on a bike trail (flat road, not dirt), my rear tube gave out. The strangest part is I'm not sure if it is a thorn because nothing is apparent from the outside. When I got home, I tried to pump it up and at first, I could hear that the leak was coming from the shrader valve. And ironically, I can feel some slight air coming out of the shrader valve? Could it be that the valve system blew or something? I sure was traveling pretty fast when it all went flat on me. When I try to pump it up for the 4th time, funny thing, it started to hold pressure! Up to 50psi again. But when I went back to the garage about an hour later, it already leaked out all the air again....
So tomorrow I'll be taking it apart and figuring out where it blew or where the leak is. Can anyone recommend what tire/inner tube combo to go with for high speed mac motor (30mph)? I'm looking at the Sclhwalbe Marathon Plus HS440 but nobody has this thing in stock in the USA. Then I'm not sure if I should spend $12 bucks and buy the super thick inner tire tube at Walmart.
The interesting thing is, I have a Mr. Tuffy tire liner brown in there, 26 x 1.95 and it looks like it served no purpose. But of course, the jury's still out as to how I got the second flat.
Oh, by the way, bicycle is a 2013 Electra Townie 21 speed with 26 x 1.95in tires. Yes, these tires are probably not designed for such high speed and the tread pattern isn't exactly aggressive. My last motiv ebike was using Kenda Small Block 8 tires and I never had a flat in that for the 9 months that I owned it. So perhaps I should try those tires again since i had some good luck with those? Same bike trail/path. Just a different bike and tire.
*** EDIT: 7/1/2014 - Found the problem, posted down below.
The first tube, had a strange hole in the inner side (facing the rim) but I found that the spoke/rim did not have anything sharp to suggest how it got there. The first time I got my Mac motor kit, within 5 minutes was when the tire went flat.
Next up, I upgraded to Slime's 26 in. inner tube from walmart. I got a good 40-50 miles out of it then today, while on a bike trail (flat road, not dirt), my rear tube gave out. The strangest part is I'm not sure if it is a thorn because nothing is apparent from the outside. When I got home, I tried to pump it up and at first, I could hear that the leak was coming from the shrader valve. And ironically, I can feel some slight air coming out of the shrader valve? Could it be that the valve system blew or something? I sure was traveling pretty fast when it all went flat on me. When I try to pump it up for the 4th time, funny thing, it started to hold pressure! Up to 50psi again. But when I went back to the garage about an hour later, it already leaked out all the air again....
So tomorrow I'll be taking it apart and figuring out where it blew or where the leak is. Can anyone recommend what tire/inner tube combo to go with for high speed mac motor (30mph)? I'm looking at the Sclhwalbe Marathon Plus HS440 but nobody has this thing in stock in the USA. Then I'm not sure if I should spend $12 bucks and buy the super thick inner tire tube at Walmart.
The interesting thing is, I have a Mr. Tuffy tire liner brown in there, 26 x 1.95 and it looks like it served no purpose. But of course, the jury's still out as to how I got the second flat.
Oh, by the way, bicycle is a 2013 Electra Townie 21 speed with 26 x 1.95in tires. Yes, these tires are probably not designed for such high speed and the tread pattern isn't exactly aggressive. My last motiv ebike was using Kenda Small Block 8 tires and I never had a flat in that for the 9 months that I owned it. So perhaps I should try those tires again since i had some good luck with those? Same bike trail/path. Just a different bike and tire.
*** EDIT: 7/1/2014 - Found the problem, posted down below.