Singlespeed & Fixed Gear - Mounting Tires on SUn CR-18 rims (what a B*TCH)

Received my SUn CR-18 rims from Velomine and I can not believe how insanely hard it is to mount tires on these things. First tire took me 35 minutes and the second close to 45 minutes. I am using 32c Randos. I really hope I never have to change a flat out on the road. They mounted pretty easily on my Deep V's with no tire levers. Has anyone had this problem with the CR-18's?

http://farm4.static.flickr.com/3138/3049019242_716d96a165.jpg

you know, some are, some arent, this tire, that tire, this tape or not, anyway, sometimes it's easy, but not always and you can't do it

http://farm4.static.flickr.com/3138/3049019242_716d96a165.jpg

Not really crying just wondering if this is normal with this rim. Good image in that reply though, just use it the correct way before assuming someone is crying okay, okay.

http://pbskids.org/itsmylife/images/puberty7.jpg

I know, man...I'm just kidding. I hate when tires are a nightmare to install too.

I know, man...I'm just kidding. I hate when tires are a nightmare to install too.

I dont mind when I am at home but on the road it can be a nightmare especially in the sketchy areas here in San Diego. I might try a different tire. How are your Sun M13 II's when mounting tires on them Scrod? And how wide of a tire have had on them? Thinking about using those for my Bareknuckle build in a few months.

In my experience, narrower tires seem to give more trouble than wide tires. I rarely have trouble mounting a wide tire on a narrow rim.

Some tires are just %$(#$$#^%$#@@#%$#@#$@ to mount. Not much you can do about it, unfortunately.

use a thinner rim tape.

What size CR-18 are you using? I have one in the 451mm diameter size and the Primo Comet 1 3/8" tires I use mount on it easier than any other tire/rim combination that I've ever seen. When deflated the tire can be pulled off the rim in under a second without tools. I'd view this rim/tire combination as dangerous to use on the front due to the chance that a fast flat would result in the tire coming off the rim and jamming in the fork. I also use a CR-18 in the 622mm size and find it to be about average with the tires I've used (WTB Slickasaurus 35mm width and Forte GT 25mm width) - tire changing can be done without tools but it's frequently quicker to use tire levers to dismount the tire.

How are your Sun M13 II's when mounting tires on them Scrod? And how wide of a tire have had on them? Thinking about using those for my Bareknuckle build in a few months.

I've got 25c Paselas (which run a little narrow for a 25) on mine and didn't have an issue with getting them on. I wouldn't go wider than 25/28 with M13s.

use a thinner rim tape.

How would this help?

I was just scratching my head over that one too.

"use a thinner rim tape."

How would this help?
Thinner rim tape definitely makes it easier to mount and unmount tires. In order to get the last bit of tire over the edge of the rim you need to get the rest of the tire bead down as far as possible into the center channel of the rim. The farther down into the channel you can get it, the more slack you can get in the bit of tire bead you're trying to work up and over the lip of the rim. Thinner tape lets the tire bead sit lower in the center of the rim.

In my experience, manning up is more effective.

lol

http://3.bp.blogspot.com/_sPKQ-dhuCKI/SyVyaSDqUmI/AAAAAAAAAyg/lvOpfmeiyqo/s400/HTFU.jpg

Ok, seriously though. I own a set of CR18's and run 28c Pasela folding bead's and they are pretty damn tight. Cant say it takes me 45 minutes to mount though. I mount in about 2 minutes or less.

Iv run some 23c wirebead Gatorskins and they were simple as well as a 23c folding Hutchison Quartz. The Vittoria Ziffaro was a PITA to mount on them though.

I stick to the pic above.

Sun Zero Degree Lite + Serfas Drifters are a fun combo.

Just carry some nice steel core tire levers with ya and all should be fine.

I have scars on my knuckles from mounting tires

if you're careful, you can install the tire with levers and not pinch the tube.
also work on small parts at a time and use some lubricant, like talcum powder or soap water, to make it easier.

Try this:


http://img401.imageshack.us/img401/7346/imgp5255x.jpg


It has worked for mounting tires I couldn't get on with steel core tire levers. Just grip it with your palm right at the point where the bead crosses from being inside the rim to hanging out, and squeeze real hard while rolling your wrists up and over.

^ Good advice, dsh.

One of the senior mech at the co-op taught me to wiggle the tire around from that point to where the beads are hanging.

Just carry some nice steel core tire levers with ya and all should be fine.

I've broken Soma steel core levers on some tires, but my Pedro's levers havent let me down yet

pedros levers are the bizzzzzzness

Thanks for the advice everyone. Another problem are my hands are not exactly my strong point these days. Carpul tunnel in the left and a fused joints in my thumb and forefinger on the right hand form a motorcycle accident years ago. I have some Schwalbe Delta Cruisers on order so I will see how those mount up. Thanks again.

I've broken Soma steel core levers on some tires, but my Pedro's levers havent let me down yet

It seems as though everybody swears by these. I admit the levers are strong and I have yet to break one. My only complaint is they are a little to wide sometimes.

I do every tire I possibly can by hand. For that stubborn tire that my whimpy self cant manage with my built in tools...I have a stack of park levers.

Pedros levers ftw.

dsh - that's also my preferred method for wrestling a stubborn tire on because it doesn't make my thumbs feel like an arthritic 90-year old man when I'm done.

my weak girly hands make mounting tires a PITA. And so i use this.

http://www.sheldonbrown.com/images/koolstop-bead-jack.gif

oh EDIT: i did break a pedro lever before.
I still use them lots, then when the really stubborn ones comes, I use the kool stop

it doesn't make my thumbs feel like an arthritic 90-year old man when I'm done.

spot on

my competent friend broke three pedros levers mounting onto cr18s. the width makes it more difficult.

the width makes it more difficult.

That's what she said.

I've got 25c Paselas (which run a little narrow for a 25) on mine and didn't have an issue with getting them on. I wouldn't go wider than 25/28 with M13s.

I had my 37c Paselas on Weinmann Dp18s for hundreds of miles and never had a problem.

Mounting is easy on my CR18s but I have big tires.

That's what she said.

LOLz the chode of all rims! :roflmao2:

http://www.hiawathacyclery.com/cart/images/Sun%20CR18.gif