dirt bike tire tubes..

FLASHLIGHTBOY · 04-07-2010, 12:33 AM

can anyone tell me about the lock nut on the tubes to the rim... are they suppose to be kept loose..I have been told that if I tighten them it will tear the valve stem from the tube.. is this right??/

Weldangrind · 04-07-2010, 02:15 AM

I snug 'em up without much torque.

Reveeen · 04-07-2010, 03:42 AM

Some of the tubes I have been getting lately (Michelin) don't have a threaded valve stem, but the "usual" is to snug them up.

One thing I haven't seen lately is a tire lock, usually found opposite from the valve stem (on the rim), it locked the tire to the rim. Maybe a thing of the past?

FastDoc · 04-07-2010, 11:22 AM

Quote:

Originally Posted by Reveeen

Some of the tubes I have been getting lately (Michelin) don't have a threaded valve stem, but the "usual" is to snug them up.

One thing I haven't seen lately is a tire lock, usually found opposite from the valve stem (on the rim), it locked the tire to the rim. Maybe a thing of the past?

Tire locks I think are only needed for people running hard on high performance bikes with very low pressures.

Our humble bikes, runnning dual sport pressure don't need them.

Weldangrind · 04-07-2010, 11:23 AM

I think that they're still quite common for the woods bike / motocross crowd, but they don't make sense for a dual sport. Tire pressure is generally higher on a DS, so a rim lock becomes redundant. IMHO, they also serve to unbalance a wheel at high speed.

On my XR, I tighten the rim lock securely. I don't want to spin the rim inside the tire (like what happened to my son).

FLASHLIGHTBOY · 04-08-2010, 12:36 AM

Thanks for the info.. I had a friend go thru a couple of tubes.. ripped the valve stem right off of the tube.. I do not know what he did.. tighten them or left them too loose.. you never get the whole story.. but I will just snug them up alittle thanks everyone..

Weldangrind · 04-08-2010, 12:42 AM

When my son ripped the valve stem off, he was riding a bike with no rim lock, low air pressure and very low gearing. The fix was to install a rim lock from an RM80 (since it was only a 14" rear rim) and increase the pressure to 15psi.

04-07-2010, 12:33 AM	#1
FLASHLIGHTBOY Join Date: May 2009 Location: SASKATOON Posts: 1,161	dirt bike tire tubes.. can anyone tell me about the lock nut on the tubes to the rim... are they suppose to be kept loose..I have been told that if I tighten them it will tear the valve stem from the tube.. is this right??/
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04-07-2010, 02:15 AM	#2
Weldangrind Join Date: Mar 2009 Location: Sardis, BC, Canada Posts: 25,977	I snug 'em up without much torque. __________________ Weldangrind "I figure I'm well-prepared for coping with a bike that comes from the factory with unresolved issues and that rewards the self-reliant owner." - Buccaneer
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04-07-2010, 11:23 AM	#5
Weldangrind Join Date: Mar 2009 Location: Sardis, BC, Canada Posts: 25,977	I think that they're still quite common for the woods bike / motocross crowd, but they don't make sense for a dual sport. Tire pressure is generally higher on a DS, so a rim lock becomes redundant. IMHO, they also serve to unbalance a wheel at high speed. On my XR, I tighten the rim lock securely. I don't want to spin the rim inside the tire (like what happened to my son). __________________ Weldangrind "I figure I'm well-prepared for coping with a bike that comes from the factory with unresolved issues and that rewards the self-reliant owner." - Buccaneer
	0

04-08-2010, 12:36 AM	#6
FLASHLIGHTBOY Join Date: May 2009 Location: SASKATOON Posts: 1,161	TUBE LOCK Thanks for the info.. I had a friend go thru a couple of tubes.. ripped the valve stem right off of the tube.. I do not know what he did.. tighten them or left them too loose.. you never get the whole story.. but I will just snug them up alittle thanks everyone..
	0

04-08-2010, 12:42 AM	#7
Weldangrind Join Date: Mar 2009 Location: Sardis, BC, Canada Posts: 25,977	When my son ripped the valve stem off, he was riding a bike with no rim lock, low air pressure and very low gearing. The fix was to install a rim lock from an RM80 (since it was only a 14" rear rim) and increase the pressure to 15psi. __________________ Weldangrind "I figure I'm well-prepared for coping with a bike that comes from the factory with unresolved issues and that rewards the self-reliant owner." - Buccaneer
	0

04-07-2010, 03:42 AM	#3
Reveeen Join Date: Jun 2009 Location: orbital platform Posts: 741	Some of the tubes I have been getting lately (Michelin) don't have a threaded valve stem, but the "usual" is to snug them up. One thing I haven't seen lately is a tire lock, usually found opposite from the valve stem (on the rim), it locked the tire to the rim. Maybe a thing of the past?
	0