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Old 07-08-2002, 03:03 PM   #1
tnbd
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Default OT: Bike tire Vs Cactus (0-2)

so I have not gone off road riding in the lands of cactus before. After our ride on thurs, I ended up pulling cactus spines our of my tires, tubes, cycling shoes, and even the hard plastic soles of the cycling shoes. Man I am impressed by these things.

What works to keep the cactus needles out of bike tire inner tubes?
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Old 07-08-2002, 03:09 PM   #2
DjRez4
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Default i can think of two solutions...

1: solid rubber tires

2: stay away from cacti



really though....cacti are bitches....companies make tire-liners, but they don't do anything
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Old 07-08-2002, 04:02 PM   #3
maciek
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I've heard that the kevlar tire liners work great...but are like 30 bucks each. Thyey last forever and you can't even poke through it with a metal tack.

Were you riding in the bushes ...I have not gotten a flat at Hall for like 2 years now and even use the lightweight tubes.

Maybe look into different tires...makes alot of difference w/ thorns.

matt
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Old 07-08-2002, 06:20 PM   #4
tnbd
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riding through the shurberies? Well yes. There were a couple times that my line took me off the trail. Sadly it was when I did a couple hops over ditches and did not keep going straight.

it was the first real riding I have done in over 5 years. I am out of practice.

When road riding a while back I tried kevlar belted tires. had a piece of metal poke though to the belt day one. I was pretty happy. Got a thing in the side wall (where the belt was not) day two. aah well. the belts in the tires do rock.

Was curious if they would hold up to cacti though.
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Old 07-08-2002, 11:43 PM   #5
KeithRS
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Cacti are not the biggest problem around these parts-

Goathead thorns are. They will go directly through a tire liner as if it wasn't there.

The only thing that helps with these evil thorns is slime sealant, which most local bike shops (and places like performance) carry in bottles and prefilled in tubes.
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Old 07-08-2002, 11:48 PM   #6
jfields
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Thumbs up Try Slime

I have a set of wheels with slime tubes in them that I use on the Highline channel because of the 'goatheads' (1/4" thorns). I've never gotten a flat with slime.

-Jonathan
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Old 07-09-2002, 10:55 AM   #7
tnbd
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man those things look unfriendly. Slime ends up a viscous liquid inside the tire. Does it add much to rolling resistance?
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Old 07-09-2002, 11:39 AM   #8
jfields
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Yes it does! About a pound of rotating mass per wheel will slow you down especially while accelerating and climbing, but itís great for training! Thatís another reason why I used them in the Spring.

-Jonathan
DS32
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Old 07-09-2002, 11:44 AM   #9
maciek
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I would recommend against slime tubes...very heavy and will hinder turning stability when going fast. Also, when I worked in a bike shop I saw a guy installing one and it blew up. Talk about a mess all over.

Keith is right about the goatheads...worst enemy of tubes. If you have a good tire, cactus will not penetrate deep enough to give a flat.

Best thing to do is stay on trail as much as possible.
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Old 07-09-2002, 12:21 PM   #10
MonoSki
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Default Go Slime!

Slime tubes are not heavy.... 219g http://www.performancebike.com/shop/...799&Store=Bike
only ~3 oz more than non slime http://www.performancebike.com/shop/....html?SKU=2849 and you are no longer plagued by flats, a great trade off in my book! In any case good to hear you were able to get out and pound around! Good luck
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Old 07-09-2002, 02:22 PM   #11
maciek
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The slime tube might not be heavy by itself, but when the wheel is spinning and the liquid is transfered to the further most portion of the wheel, your cornering suffers very noticebly. One way to test is to take a wheel w/ slime and one w/out...spin the wheel on the skewer between your hands and tilt slightly...the wheel w/ slime will pull your hands with greater force. Hence, when cornering w/ the slime wheel will have more tendency to try to pull your bike from under you.

I used to work a Performance and I don't think anybody there would ever recommend a slime tube to a dedicated cyclist...maybe a Sunday leisure rider.
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Old 07-09-2002, 02:47 PM   #12
Sidewinder
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Default My Vote - slimer

Well I am sure it does affect at some level, but I am not sure about suffering very noticeably. I don't know about the rest of you but my bikes have a fork and a handlebar to help me turn, so holding a wheel by its skewers isn't a valid comparison... If you think the added weight will really pull your bike from under you I would suggest going to the gym and doing some upper body work. Christ we are talking about bicycles here right? Not my Suzuki -- it has much heavier wheels.

Anyway, I have riding mountain bikes for almost 20 years - Sundays only I guess - and I too go for the slime tires. Nope, not too hard core and I am not into racing, I am into having fun - not fixing flats and buying tubes & patches in bulk, so for me slime is worth its weight in sweat.

What should you do, well that is up to you. How lucky are you? How many spares do you carry, and how much do you like fixing flats? I myself am not too lucky, don't like to carry a lot of stuff with me, and don't like sitting in the dirt fixing flats.
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Old 07-09-2002, 04:41 PM   #13
tnbd
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thanks all. Next time I am at a shop I will look at the options.
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Old 07-09-2002, 05:46 PM   #14
maciek
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-"If you think the added weight will really pull your bike from under you I would suggest going to the gym and doing some upper body work."-

I would suggest a lesson in physics before you tell me to go to the gym. It does not matter if you can lift 3000 lbs when you have no leverage. When cornering, the only thing touching the ground are the wheels...where is your leverage? You can pull on the handle bars all day and it won't do d$ck.

Sure, if you are a granny rider and don't go over 5mph, you will never have enough lean in the corner to notice.
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Old 07-09-2002, 07:05 PM   #15
Sidewinder
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Question Grumpy grumpy

Ok I know I might be short, but the hub is 27" from the bars that equals leverage...

So I guess you can only ride in a straight line! Since you said you can pull on the bars all day long and it won't do 'd$ck'...

I guess some people on this board get testy and threatened when anybody has their own opinion, that is just too bad...

In any case, enjoy your riding. It is all about having fun right??
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