.: XT660.com - The #1 XT660 Resource :.

.: XT660.com - The #1 XT660 Resource :. ( https://www.xt660.com/index.php)
-   General & Appearance Mods ( https://www.xt660.com/forumdisplay.php?f=22)
-   -   Mysterious flat ( https://www.xt660.com/showthread.php?t=24441)

Pasta 18-08-15 20:08
Mysterious flat
 
Last week on my way for a ride I noticed my back tyre completely deflated
I decided to inflate it and just see if it's not a slow puncture before I go ahead a replace the tube (wasn't in the mood that day).

So from last week Thursday to today the tyre is still exactly the same as when I inflated it after the flat.

Do you guys think I should change the tube anyway or can I live with the mysterious once of flat?

DirkZ 18-08-15 20:19
You sure nobody deflated it for you ?

Pasta 18-08-15 20:53
Haha no. I'm lucky enough to have a lock up garage. I also checked the valve cap because I know kids place little stones in there and that deflates the tyre over time.

Pleiades 18-08-15 22:02
Sometimes when you pump a tyre up or use a pressure gauge debris or dust can get in and cause the valve not to seat properly. Sometimes the valves just get a bit sticky of their own accord. The next time the tyre is inflated it often dislodges the obstruction and all is good again.

The valve's seating can be unsettled after a long high speed ride especially if the valve spring is a little weak due to centrifugal forces.

Having good quality valve caps with a rubber O-ring seal in them helps prevent dust and dirt causing problems. It's also a good idea whenever you inflate a tyre to quickly release the valve (and some pressure) before you start pumping (or using a gauge) to blow out anything that might be in there.

Pasta 19-08-15 10:16
Quote:
Originally Posted by Pleiades (Post 213444)
Sometimes when you pump a tyre up or use a pressure gauge debris or dust can get in and cause the valve not to seat properly. Sometimes the valves just get a bit sticky of their own accord. The next time the tyre is inflated it often dislodges the obstruction and all is good again.

The valve's seating can be unsettled after a long high speed ride especially if the valve spring is a little weak due to centrifugal forces.

Having good quality valve caps with a rubber O-ring seal in them helps prevent dust and dirt causing problems. It's also a good idea whenever you inflate a tyre to quickly release the valve (and some pressure) before you start pumping (or using a gauge) to blow out anything that might be in there.
Very useful information Pleiades thanks. I guess that is what might have happened. I did inflate the wheels a week prior for a two up ride. Maybe the o-ring in the cap just didn't seal well enough and the valve did get stuck so it let out air slow enough for me to not notice.

Pasta 25-08-15 11:05
Went camping this weekend and on the last day while packing the bike I realised the flat has returned.

After 3 hour drive home with the AA and replacing the tube I found a long nail in the tyre and it turns out the tube had green slime in it. That is why the first time it went flat the slime blocked the hole and after the two up ride this weekend it was punctured again but the slime did not work.

Lesson learned: Take spare tubes wherever you go.


All times are GMT +1. The time now is 00:30.

Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2019, vBulletin Solutions Inc.