Have questions or want to discuss cycling? Join Now or Sign In to participate in the BikeRide community.

New: Take part in the September Giveaway for the Phantom XR electric bicycle from Life EV


Front rim punctures inner-tube at the valve stem.
#1
I did not know where else to put this.

Would any of you know how to correct this?
My thought: cannibalize a bad inner-tube and create a rubber boot to cover the valve stem on the good inner tube.

Seems to afford extra protection and allow for air pressure without popping a hole in it.
Don't. Stop. Pedaling!
  Reply
#2
File the inside of the valve hole in the rim if it's aluminum one and be sure that the rim tape is covering everything except for the valve hole... don't know what to do if you have a carbon rim...
  Reply
#3
(06-02-2011, 11:25 PM)bobtravers Wrote:  File the inside of the valve hole in the rim if it's aluminum one and be sure that the rim tape is covering everything except for the valve hole... don't know what to do if you have a carbon rim...

No carbon rims; rim tape sits without blocking the valve hole.
Thank you for the tip.
Don't. Stop. Pedaling!
  Reply
#4
If you have any of this you could also put a little around the edges...

http://www.amazon.com/Star-brite-Liquid-Electrical-Tape/dp/B0000AXNOD/
Good maintenance to your Bike, can make it like the wheels are, true and smooth!
  Reply
#5
(06-04-2011, 10:05 AM)Bill Wrote:  If you have any of this you could also put a little around the edges...

http://www.amazon.com/Star-brite-Liquid-Electrical-Tape/dp/B0000AXNOD/

Extra protection? Not a bad idea.

After inspecting the rim, I found the culprit on the convex portion of the valve stem insert hole. I checked the valve stem itself and the shape of the "cut" matches the culprit convex area. Filing is probably the best and only solution needed. The rear tire has not (thank god!) had this problem.
Don't. Stop. Pedaling!
  Reply
#6
Easy as 1-2-3.... Use a round file, like this one:

http://www.cooperhandtools.com/brands/CF_Files/model_detail.cfm?upc=037103231901

I would not put liquid electrical tape on the air chamber valve, cause solvent in it may damage rubber of the tube, making it crack and let you go on a flat...

Round valve stem hole with a good tube should go for thousands of km free of flats!
  Reply
#7
(06-04-2011, 12:49 PM)bobtravers Wrote:  Easy as 1-2-3.... Use a round file, like this one:

http://www.cooperhandtools.com/brands/CF_Files/model_detail.cfm?upc=037103231901

I would not put liquid electrical tape on the air chamber valve, cause solvent in it may damage rubber of the tube, making it crack and let you go on a flat...

Round valve stem hole with a good tube should go for thousands of km free of flats!

Thanks for the tool spec's and image! It should be at any hardware or well-stocked hobby store.
Don't. Stop. Pedaling!
  Reply
#8
(06-04-2011, 12:49 PM)bobtravers Wrote:  Easy as 1-2-3.... Use a round file, like this one:

http://www.cooperhandtools.com/brands/CF_Files/model_detail.cfm?upc=037103231901

I would not put liquid electrical tape on the air chamber valve, cause solvent in it may damage rubber of the tube, making it crack and let you go on a flat...

Round valve stem hole with a good tube should go for thousands of km free of flats!

You really think it would have that kind of reaction to the rubber of the tube, even after it has dried?
Good maintenance to your Bike, can make it like the wheels are, true and smooth!
  Reply
#9
Well it might damage your tube while applicating it!
  Reply
#10
see this for info on valve tear off, page 25;
http://www.schwalbe.co.uk/shopdata/files/TechInfo2-GB.pdf
  Reply


Possibly Related Threads...

Forum Jump:

[-]
10 Latest Posts
What's the deal with hybrid bikes?
Yesterday 01:16 PM
Bike shop labor charges
09-18-2021 06:38 PM
Coming to America
09-18-2021 06:21 AM
Yet another bike ID thread (Pseudo-Batta...
09-17-2021 08:55 PM
Interesting Discovery - Electric Fatbike
09-17-2021 12:31 AM
Modifying your eBike
09-17-2021 12:22 AM
Best continent for cycle touring? ...Eur...
09-16-2021 09:50 AM
Mechanical "locking" sound and there's r...
09-16-2021 09:45 AM
Unknown bike
09-16-2021 05:49 AM
New Member
09-16-2021 05:34 AM

[-]
Join BikeRide on Strava
Feel free to join if you are on Strava: www.strava.com/clubs/bikeridecom

[-]
Top 5 Posters This Month
no avatar 1. ReapThaWhirlwind
24 posts
no avatar 2. Criminal
15 posts
no avatar 3. Jason @ect
11 posts
no avatar 4. Ride with Me
6 posts
no avatar 5. Jesper
5 posts