Join Date: Dec 2005
Location: Upland Ca
Bikes: Lemond Chambery/Cannondale R-900/Trek 8000 MTB/Burley Duet tandem
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Originally Posted by WhaleOil
Just back from an attitude improvement ride
I did not check the tube for a leak with water. I should have. When I put the same tube (company) it had a leak at the stem. Put a new one in and it's fine.
The little nut. I asked about that at the local place. I had mentioned that that nut always backs off during a ride. He said on a flat rim, they at least turn down flat but on the rims I have with the 7.5FX you may as well throw them away. I did.
I have a patch kit and know how to use it.
Don't throw that little nut away!
..................That's more than likely how you created that leak at the stem. By pushing down on the pump head you are flexing the stem into the tube. If you use the nut, it will eliminate that and lower the risk of damaging the tube at the stem. Speaking form experience here. I place the nut on everytime I inflate the tire. Not too tight, just enough to hold it secure.
I DO NOT RIDE with the nut on my rim. I carry it with me in my saddle bag. While making a roadside repair, it helps bigtime. I've seen several riders damage the stem during a roadside repair. They bend it, flex it, snap the stem, tear the tube etc. Plus it helps the pump head make better contact. Ever place the pump on the stem and it doesn't seem to accept the air? That's why. Secure the stem, then you are able to place pressure on teh stem without damaging it.
Couple of weeks ago we did a group ride. Some guy flatted and only had CO2. I let him use my frame pump rather than waste his air. He pumped and pumped for 3 or 4 minutes. saie it wan't working. WTF! I thought it was myu pump so I took over. He had about 3 lbs of pressure in it. I put the nut on and had it up within a minute or two. It's all about tips and technique!.....and he was an experienced veteran double century rider!
Last edited by Mr. Beanz; 06-03-08 at 07:47 AM.