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Kenda Nevegal, how to fit them??

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Pableras

· Spanish rider
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311 Posts
Discussion starter · #1 ·
Hi guys:

I use a Kenda Nevegal 2.1 (folding bead) on my front wheel (Mavic 117) and from the first time I used it I couldn't mount it well. The bead doesn't fit the rim, so when I spin the wheel I can see a little (sometimes big) "movement" because the bead is not in the same position on all the rim. There are places whrere the bead is placed deeper.

I could mount it well by putting water on the bead and inflating the tire to high pressures (so I think that the tire is not defective)

Today I had to mount it and I had to try many times to fit it well. It's really difficult

Is this common? Is it because of the tire? Is it because of the rim? :madman:

Thanks! :thumbsup:
 
#2 ·
Use some soapy water on the edge of the tire and rim and the bead will *snap* into place as you pump it up. Air it up to 40psi and let it sit for a few hours to stretch out nicely, then set it to your riding pressure.

The soap in the water helps to lubricate the rim/tire so it slips into place easier. Another option is talcum powder.


R.
 
Discussion starter · #4 ·
I thought that soapy water would be fine, but I use low pressures (no when i I mount the tire on the rim) so the tire will probably slip while braking and cut the valve of the tube.

That's why I used water, but it's not effective...

I tried talcum powder and I think that I'm going to have problems with the tire-rim slip
 
#5 ·
jeffscott: When you're pulling on the tire, do you have a relatively high pressure in the tube? It sounds like you air it up high, deflate it a bit, then start pulling. Sometimes this works for me, other times its just futile, and I get different results from the same tire, too.

I've had problems with both 2.1's and 2.35's, and on different rims.

Pableras: I would think the soap/water mixture would evaporate so that there would be no slippage, but I haven't tried it.
 
Discussion starter · #6 ·
I don't know why this happens.

I also use Maxxis & Michelin tires (the same size and in the same rim) and I've never had this problem. Just put them and inflate and the tires are perfectly placed in the rim.

I only had problems with some Hutchinson On the Rocks.

It's weird
 
#7 ·
perioeci said:
jeffscott: When you're pulling on the tire, do you have a relatively high pressure in the tube? It sounds like you air it up high, deflate it a bit, then start pulling. Sometimes this works for me, other times its just futile, and I get different results from the same tire, too.

I've had problems with both 2.1's and 2.35's, and on different rims.

Pableras: I would think the soap/water mixture would evaporate so that there would be no slippage, but I haven't tried it.
Click to expand...
Yes, if the bead isn't seated after pumping to 40+psi, then drop it until it's soft enough to pull sideways a bit (10-20psi depending on how stiff the sidewalls are), this will usually move the bead into place, then air it back up and check the bead all round.
 
#8 ·
Pableras said:
I don't know why this happens.

I also use Maxxis & Michelin tires (the same size and in the same rim) and I've never had this problem. Just put them and inflate and the tires are perfectly placed in the rim.

I only had problems with some Hutchinson On the Rocks.

It's weird
Click to expand...
Some beads are more compliant than others... I've had no problems with wire beaded tyres, but now I'm using kevlar beads and I'm having those issues.

Also, the shape of certain rims on the bead hook could affect.

I'll try the soap thingy... and water will evaporate just fine and will leave soap powder which will avoid slippage.

Or... you can hit the closest auto tyre shop and ask them to put that tar like thing they use to mount tyres and that also acts like a seal. Hey, it works for car tyres which have very stubborn beads (you can't mount them by hand :D ). No bumps and no slippage.

Cheers!
 
Discussion starter · #9 ·
Warp said:
Or... you can hit the closest auto tyre shop and ask them to put that tar like thing they use to mount tyres and that also acts like a seal. Hey, it works for car tyres which have very stubborn beads (you can't mount them by hand :D ). No bumps and no slippage.

Cheers!
Click to expand...
That sounds good :thumbsup: I'll try it in a garage the next time :D
 
#10 ·
I've had the same problem with....

Nevies and some other tires in the past. Usually just inflate to the tire max psi and it'll settle in. If not then deflate to 10psi and you should be able to work it on by hand. If not then a little soapy water will allow the bead to pop right into place. The soap evaporates and actually becomes rather sticky so tire slipage shouldn't be a problem. It's not uncommon with some tires to have this problem. I had an old set of Panaracer Dart and Smoke II's that I had the devils own time getting to seat completely! Bead dimensions and design play a big part in it. Usually though a bead that is tough to get to seat will rarely shift, slip, or roll off. It just takes a little more work to get things seated right is all.

Good Dirt
 
#13 ·
perioeci said:
jeffscott: When you're pulling on the tire, do you have a relatively high pressure in the tube? It sounds like you air it up high, deflate it a bit, then start pulling. Sometimes this works for me, other times its just futile, and I get different results from the same tire, too.

I've had problems with both 2.1's and 2.35's, and on different rims.

Pableras: I would think the soap/water mixture would evaporate so that there would be no slippage, but I haven't tried it.
Click to expand...
Sorry missed your post, I air down to about 10 psi to do the pulling, really just enough to keep the bead on or you get to start over again.
 
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