Tricks for mounting stubborn clinchers?

Discuss light weight issues concerning road bikes & parts.
HarryS
Posts: 39
Joined: Sun Feb 05, 2012 12:16 pm

by HarryS

Hello

Im trying to mount some Vittoria Open Corsas on a new Soul S2 wheelset and am going through hell! That last few inches is impossibly tight that its impossible for me to roll it by hand (Something Ive never had a problem with on cheaper tires). I got one tire fully seated doing some questionable things with a plastic tire lever, but I paid for that by pinching a tube.

Any help would be greatly appreciated and ultimately me back on my bike! :-)

HillRPete
Posts: 2292
Joined: Tue Apr 12, 2011 8:08 am
Location: Pedal Square

by HillRPete

Pinch the already seated parts of the tyre with your hand, so it sits in the center of the rim bed. Often that gives the ever so slightly play needed for the final snap.

by Weenie


Hawkwood
Posts: 264
Joined: Tue Apr 07, 2009 4:27 pm

by Hawkwood

Make sure the first bead is running in the centre of the rim. Use a thin rim tape. I've found that using some talcum powder or chalk on the rim and inside the tyre helps to lubricate things. Plus there's a few youtube videos where they show how to mount really tight tyres.

ldamelio
Posts: 201
Joined: Fri Jun 06, 2008 11:41 am
Location: Bucks County PA USA

by ldamelio

Above are great tips. Another is: rub a small amount of soapy water over the last section of the rim you're having trouble mounting. Saliva a reasonable field alternative for flats on the road. Helps slide the last bit of bead over. Also, try rolling the last bit of bead with your palm instead of thumbs. Much stronger.

Gregorio
Posts: 1582
Joined: Thu Jul 26, 2007 10:24 pm
Location: Center of the Universe

by Gregorio

My only tip is never use continental tires. I find vittoria are the easiest to mount while most continental tires are the most difficult.
Also I have heard but nit tried yet. Put the tire in an old pillow case and put in the dryer for a few minutes to warm before the initial installation.
Many times after the tire is on the rim for a while it stretches a bit and becomes easier the next time.

HarryS
Posts: 39
Joined: Sun Feb 05, 2012 12:16 pm

by HarryS

Finally got the bugger on. Thanks for the tips. I am however now doubting this wheel / tire combo for training...if I get a flat I dont want to be on the side of the road straining and swearing for 20 minutes! I guess thats something I didnt consider when I was looking at wheels to replace my stock Fulcrum 7's. :roll:

blantonator
Posts: 115
Joined: Sat Oct 23, 2010 8:36 pm

by blantonator

the bead should stretch. My hutchison tubeless were a nightmare the first time i mounted them, but now they go on like any tire.

mjduct
Posts: 662
Joined: Tue Dec 27, 2011 2:19 pm

by mjduct

wassertreter wrote:Pinch the already seated parts of the tyre with your hand, so it sits in the center of the rim bed. Often that gives the ever so slightly play needed for the final snap.


this and start at the valve and work your way around the outside of the tirefrom both ends so the part your jacking with is 180 degrees from the valve. It also helps to put just enough air in the tube to give it shape (like 3 pumps with a floor pump)

For the life of me I don't know how people pinch tubes, but I hear about it all the stinking time...

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yourdaguy
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Joined: Thu Mar 17, 2005 3:25 am
Location: Southern Indiana USA
Contact:

by yourdaguy

That is backwards. Start away from valve so the last part you are jacking is at the valve. If you start at the valve the tire can't sit down in the groove at the valve and it will have to stretch further. If you start away from the valve, the entire tire can set in the center grove while you pry the last 2 inches on at the valve.
For certain parts stiffer is more important than lighter.

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Rick
Posts: 2001
Joined: Sat Aug 29, 2009 4:30 pm

by Rick

I just lever them on. But I make sure the inner tube is pushed up on to the rim first, inside the tire, so that the lever doesn't pinch the tube. Then, don't get too "greedy" with the levering. Just a smal section at a time until it is on, so you don't have to insert much length of lever (risking biting the tube).
I like Contis specifically because they are hard to put on. I have rolled "easy" clinchers off the rim (they were michelins).

They do get a lot easier after the first time.

eric
Posts: 2196
Joined: Tue Nov 11, 2003 9:47 pm
Location: Santa Cruz, California, USA
Contact:

by eric

I lever mine on too. I also pinch the beads in so they're sitting in the center of the rim. For the valve, push the valve into the tire (not all the way of course) so you can get the beads all the way to the center.

To avoid pinching the tube, use the tire iron to stuff it up into the tire before you use the iron to lever the bead over, and go 1-2cm at a time.

Getting the tire warm by leaving it in the sun can also help.

bones
Posts: 414
Joined: Sun Aug 23, 2009 10:38 am

by bones

yourdaguy wrote:That is backwards. Start away from valve so the last part you are jacking is at the valve. If you start at the valve the tire can't sit down in the groove at the valve and it will have to stretch further. If you start away from the valve, the entire tire can set in the center grove while you pry the last 2 inches on at the valve.




I think mjduct had it correct. Start at the valve and finish opposite from the valve. Exception: on tubeless rims and tires, you want to finish at the valve.

ianeire
Posts: 49
Joined: Tue Aug 09, 2011 2:08 pm
Location: Dublin, Ireland

by ianeire

I have this problem with new Gonti GP4000S on my Easton rims. They're an absolute nightmare to get on and off. I use some soapy water for the last bit.

ccie1115
Posts: 3
Joined: Fri Oct 07, 2011 6:53 pm

by ccie1115

10-15 seconds in microwave...works wonder; except when you're out on the road

seandonovan
Posts: 53
Joined: Mon Sep 19, 2011 5:36 pm
Location: Boston MA USA

by seandonovan

ccie1115 wrote:10-15 seconds in microwave...works wonder; except when you're out on the road


Or you have wire beads...

by Weenie


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