• Hi everyone,

    As you all know, Coffee (Dean) passed away a couple of years ago. I am Dean's ex-wife's husband and happen to have spent my career in tech. Over the years, I occasionally helped Dean with various tech issues.

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Rim lock or not?

E

ElDiablo

Husqvarna
B Class
I currently have Teraflex with rim lock and it took 1lbs to balance it. The rear is very heavy. I'm thinking to switching to Michelin Desert and dump the rim lock. I ride the bike 90% off road.
What does the rim lock really do if you ride with 12lbs pressure? I can understand with the Teraflex where I run with 4lbs. Does this make sense?
 
4psi????? At 12 psi the rim lock is still doing quite a bit to keep the bead seated on the tire. Only way I'd recommend running without the bead lock is if you were to run no less then 18 psi in any given circumstance. What I find works great is installing a secondary beadlock on the rear rim which will help with balancing and in the event of a pinch flat the tire will stay on the rim much better and be rideable for a while as opposed to one beadlock which is usually not rideable after a flat.
 
BMWHusky Atlanta;4146 said:
4psi????? At 12 psi the rim lock is still doing quite a bit to keep the bead seated on the tire. Only way I'd recommend running without the bead lock is if you were to run no less then 18 psi in any given circumstance. What I find works great is installing a secondary beadlock on the rear rim which will help with balancing and in the event of a pinch flat the tire will stay on the rim much better and be rideable for a while as opposed to one beadlock which is usually not rideable after a flat.
Click to expand...


Teralfex can be ridden with 0PSI. Would you still put a second lock on it?
 
I would still use a rim lock on a Terra-flex tire. Is it really important to have them balanced if you aren't on the road that much?
 
Another very good reason the second rim lock is a must is if you do any high speeds it kinda balances everything (opposite the first) and you become way more stable at higher speeds.
A whole different ride for sure.
 
That's what I meant. If you are using a Terra-Flex(very heavy mud tire), are you really riding in conditions that would be fast enough to wish you had the tire perfectly balanced? On the other hand, that tire is quite heavy, what's another rim lock to get it in balance?
 
gandalf;4154 said:
That's what I meant. If you are using a Terra-Flex(very heavy mud tire), are you really riding in conditions that would be fast enough to wish you had the tire perfectly balanced? On the other hand, that tire is quite heavy, what's another rim lock to get it in balance?
Click to expand...

I ride in the desert and also do some local OHV tracks. I'm thinking of changing to Michelin Desert. I had the Tera balanced an it took 1lbs to do it and there is no hole for the second lock.
 
ElDiablo;4155 said:
I ride in the desert and also do some local OHV tracks. I'm thinking of changing to Michelin Desert. I had the Tera balanced an it took 1lbs to do it and there is no hole for the second lock.
Click to expand...


I used the valve stem hole directly opposite the factory rim lock. Then just drilled a new hole for the valve stem dead center between the two rim lock, very smooth on the highway now. I have dual rim locks front & rear :D
 
ElDiablo;4155 said:
I ride in the desert and also do some local OHV tracks. I'm thinking of changing to Michelin Desert. I had the Tera balanced an it took 1lbs to do it and there is no hole for the second lock.
Click to expand...

The stock rear rimlock is less than 4oz, maybe something else is going on cause it took 12oz more than it should?
 
use them,,,balance rim with lock and just leave the weights on for ever
maybe slight bal issues with tires,,,but close enough.
 
Coffee;4169 said:
The stock rear rimlock is less than 4oz, maybe something else is going on cause it took 12oz more than it should?
Click to expand...

Teraflex is huge. I'm sure that this was the main cause.
 
IMHO just use one rim lock, two just doubles the chance of a pinch flat. If you would like to balance the Teraflex turn the tire on the rim a 1/4 turn at a time until you get it down to a reasonable weight then add your wheel weights. No tire should take a pound of weight. I have been a Tech for over 20 years and never installed or even heard of a wheel taking that kind of weight.
 
GoFaster;4188 said:
Interesting, how many have experienced a pinch flat due to this combo?
Click to expand...

I've had 1 flat on a bike - on the freeway at 70+ mph while only 1 rim lock was in the front, and 1 rim lock in rear - that was truly exciting. Got lucky and the tire did not come off the rim but added the more rim locks soon after that in case that happened again. So now I have 2 front, 2 rear.

In addition to (hopefully) keeping tires on the rim when getting a flat at higher speeds it also helps balance the wheel.


Probably does not answer your question though...
 
The pro's you bring up Dean are the reasons I would want to go with an extra lock on each wheel. It is concerning to have to worry about the pinch factor though.
 
GoFaster;4190 said:
The pro's you bring up Dean are the reasons I would want to go with an extra lock on each wheel. It is concerning to have to worry about the pinch factor though.
Click to expand...

Completely understand your question, but it will take someone with more experience at flats than I have to answer it.
 
Every pinch flat I have had has been at the rim lock. I am sure if you talk to a few guys that have had pinch flats you will find more often than not it is at the rim lock. Just stands to reason that if you have 2 you have a better chance of pinching the tube.
 
ElDiablo;4155 said:
I ride in the desert and also do some local OHV tracks. I'm thinking of changing to Michelin Desert. I had the Tera balanced an it took 1lbs to do it and there is no hole for the second lock.
Click to expand...

I think that is your best bet. I looked at those the decided there was no way I was mounting that brick to my bike.
 
I run 2 bead locks in the rear and am perfectly fine running one in the front. I have still managed to do 70mph on a lake bed with a blown front and only one BL chasing Jimmy Lewis outside Primm Nevada, after that experience I had a couple of pinch flats in the rear on a wheel with only one BL and found that without two BL's in the rear, you're not riding on a rear flat for very long or very safely.
 
I run 2 with a trials tire - with one rim lock I was spinning valve stems off on flat even ground. I have pinch flatted - always with trials tires, always with less than 8psi - but the pinch has never been at the rim lock.

However, with 2 rim locks you can keep going - it's not good for the tire and you may want to dodge the bigger rocks. I ran 40 miles of the 2007 Virginia City GP with a rear flat - passing people on every climb (rim looked like @#@ after, but...)

Tire balls are looking better and better
 
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