Hard mounting tires for what its worth
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Hard mounting tires for what its worth
Shimano RS700 wheels with Continental 5000 TL 700X25.
Wheetset and tires were new.
I mounted one tire on the rear wheel with a struggle, but in one effort.
I tried mounting the other tire on the front wheel, but after struggling hard, wearing light work gloves to increase the grip, I gave up after struggling for 15 min and with bruises on my palms.
Tire lip in the rim well, and pulling all the slack as much as possible.
I decided to leave the half mounted tire in the sun for about 3 hrs (26 Deg C).
Then I tried to remount the tire which I did successfully with a struggle, but one hard try. There was definitely a difference.
I suspect there was a slight difference in tire diameter.
Anyone use the EZ-Clincher Pocket Tire Tool
Wheetset and tires were new.
I mounted one tire on the rear wheel with a struggle, but in one effort.
I tried mounting the other tire on the front wheel, but after struggling hard, wearing light work gloves to increase the grip, I gave up after struggling for 15 min and with bruises on my palms.
Tire lip in the rim well, and pulling all the slack as much as possible.
I decided to leave the half mounted tire in the sun for about 3 hrs (26 Deg C).
Then I tried to remount the tire which I did successfully with a struggle, but one hard try. There was definitely a difference.
I suspect there was a slight difference in tire diameter.
Anyone use the EZ-Clincher Pocket Tire Tool
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Shimano RS700 wheels with Continental 5000 TL 700X25.
Wheetset and tires were new.
I mounted one tire on the rear wheel with a struggle, but in one effort.
I tried mounting the other tire on the front wheel, but after struggling hard, wearing light work gloves to increase the grip, I gave up after struggling for 15 min and with bruises on my palms.
Tire lip in the rim well, and pulling all the slack as much as possible.
I decided to leave the half mounted tire in the sun for about 3 hrs (26 Deg C).
Then I tried to remount the tire which I did successfully with a struggle, but one hard try. There was definitely a difference.
I suspect there was a slight difference in tire diameter.
Anyone use the EZ-Clincher Pocket Tire Tool
Wheetset and tires were new.
I mounted one tire on the rear wheel with a struggle, but in one effort.
I tried mounting the other tire on the front wheel, but after struggling hard, wearing light work gloves to increase the grip, I gave up after struggling for 15 min and with bruises on my palms.
Tire lip in the rim well, and pulling all the slack as much as possible.
I decided to leave the half mounted tire in the sun for about 3 hrs (26 Deg C).
Then I tried to remount the tire which I did successfully with a struggle, but one hard try. There was definitely a difference.
I suspect there was a slight difference in tire diameter.
Anyone use the EZ-Clincher Pocket Tire Tool
2. Start the second bead across from the valve stem instead of starting there.
Together those two things make the difference between cussing at tools and comfortable hand mounting.
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1. Use two wraps of 1 mil Kapton (5/8" or 16mm for traditional rims, 3/4" or 19mm for wide) totaling 0.005" thick versus .010" for thin rim tapes and .020" for Velox.
2. Start the second bead across from the valve stem instead of starting there.
Together those two things make the difference between cussing at tools and comfortable hand mounting.
2. Start the second bead across from the valve stem instead of starting there.
Together those two things make the difference between cussing at tools and comfortable hand mounting.
Second bead across from valve. Yes
I was surprised regarding the difference of mounting same tires on same rims.
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Likes For davidad:
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Soapy water on bead of tire and rim can be a hand-saver. Careful with tire jack; you can bend your rim if you apply a lot of force.
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The VAR lever would bend to where I thought the lever was going to break, but it never did.
John
#8
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i prefer to have a wide AND thick enough rim tape. one way i know the rim tape is not too thin is having just a bit less spoke tension after mounting the tire, inflating and then releasing air pressure (tire fully mounted on the rim).
one of the reasons why tires are hard to mount on the rim would be low average spoke tension. that's because there is rim compression (circumferential) due to spoke tension. sloppy built wheels will have too high tension variance and also low average spoke tension. very few people care to study the whole science - not art. it's hard to have someone explaining it to you and if you don't understand the science behind wheel building chances are that each time one person learns from another... either some things will be missing in the knowledge passed on or some error/superstition in that knowledge will be passed on.
other reason of tires being hard to mount... is not knowing the proper technique. or the rim not having a deep enough channel (shape). but again, this problem can be addressed with the proper technique.
https://i.stack.imgur.com/PMulr.png
one of the reasons why tires are hard to mount on the rim would be low average spoke tension. that's because there is rim compression (circumferential) due to spoke tension. sloppy built wheels will have too high tension variance and also low average spoke tension. very few people care to study the whole science - not art. it's hard to have someone explaining it to you and if you don't understand the science behind wheel building chances are that each time one person learns from another... either some things will be missing in the knowledge passed on or some error/superstition in that knowledge will be passed on.
other reason of tires being hard to mount... is not knowing the proper technique. or the rim not having a deep enough channel (shape). but again, this problem can be addressed with the proper technique.
https://i.stack.imgur.com/PMulr.png
Last edited by adipe; 05-18-21 at 11:32 AM.
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i prefer to have a wide AND thick enough rim tape. one way i know the rim tape is not too thin is having just a bit less spoke tension after mounting the tire, inflating and then releasing air pressure (tire fully mounted on the rim).
one of the reasons why tires are hard to mount on the rim would be low average spoke tension. that's because there is rim compression (circumferential) due to spoke tension. sloppy built wheels will have too high tension variance and also low average spoke tension. very few people care to study the whole science - not art. it's hard to have someone explaining it to you and if you don't understand the science behind wheel building chances are that each time one person learns from another... either some things will be missing in the knowledge passed on or some error/superstition in that knowledge will be passed on.
other reason of tires being hard to mount... is not knowing the proper technique. or the rim not having a deep enough channel (shape). but again, this problem can be addressed with the proper technique.
https://i.stack.imgur.com/PMulr.png
one of the reasons why tires are hard to mount on the rim would be low average spoke tension. that's because there is rim compression (circumferential) due to spoke tension. sloppy built wheels will have too high tension variance and also low average spoke tension. very few people care to study the whole science - not art. it's hard to have someone explaining it to you and if you don't understand the science behind wheel building chances are that each time one person learns from another... either some things will be missing in the knowledge passed on or some error/superstition in that knowledge will be passed on.
other reason of tires being hard to mount... is not knowing the proper technique. or the rim not having a deep enough channel (shape). but again, this problem can be addressed with the proper technique.
https://i.stack.imgur.com/PMulr.png
However, my post was more about the difference I encountered regarding mounting similar tires on similar rims, and the effect of sun heat.
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Shimano RS700 wheels with Continental 5000 TL 700X25.
Wheetset and tires were new.
I mounted one tire on the rear wheel with a struggle, but in one effort.
I tried mounting the other tire on the front wheel, but after struggling hard, wearing light work gloves to increase the grip, I gave up after struggling for 15 min and with bruises on my palms.
Tire lip in the rim well, and pulling all the slack as much as possible.
I decided to leave the half mounted tire in the sun for about 3 hrs (26 Deg C).
Then I tried to remount the tire which I did successfully with a struggle, but one hard try. There was definitely a difference.
I suspect there was a slight difference in tire diameter.
Anyone use the EZ-Clincher Pocket Tire Tool
Wheetset and tires were new.
I mounted one tire on the rear wheel with a struggle, but in one effort.
I tried mounting the other tire on the front wheel, but after struggling hard, wearing light work gloves to increase the grip, I gave up after struggling for 15 min and with bruises on my palms.
Tire lip in the rim well, and pulling all the slack as much as possible.
I decided to leave the half mounted tire in the sun for about 3 hrs (26 Deg C).
Then I tried to remount the tire which I did successfully with a struggle, but one hard try. There was definitely a difference.
I suspect there was a slight difference in tire diameter.
Anyone use the EZ-Clincher Pocket Tire Tool
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#13
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Anecdotally I haven't bent a rim with mine. I carry a VAR on the bike.