Tech Tuesday - Flat Repair Without A New Tube Or Patch Kit

Aug 7, 2011 at 20:02

Got a flat tire and no tubes or patches? No matter how prepared you think you are or how many spare tubes and patches you pack in your bag, there comes a time when you end up facing a long walk out of the bush. It could happen on the quick after work spin where you forgot to throw another tube in your bag, or maybe during that epic death march that saw you and your friends make your way through every spare tube in the group - but all hope is not lost. By removing the flat tube, cutting it in half at the puncture and then tying it in a tight knot you may just be able to take a pass on the walk of shame. Keep in mind that this trail side repair is strictly designed to get you home and no further. Sure, it may hold air for days, but pedal carefully and be sure to replace the knotted tube with a new one once you get home.

What you'll need:

• While this emergency repair doesn't require a new tube or patch kit, you'll still need a pump to get back up and riding.

Start your self rescue mission by removing the tire and tube, being sure to figure out exactly what it was that caused the flat in the first place - this trail side fix will only work once per tube so you want to be sure that you won't flat again. Using your pump to inflate the tube sightly will make finding the puncture much easier. It's time to perform a bit of surgery once you've found it...

If you carry a folding knife or Leatherman in your bag you can use that to cut the tube across its diameter exactly where the puncture is located. If not, you'll need to use the teeth on your chain ring to do the job. If your bike uses a single ring and guide, lift the chain up and off of the ring. Take your time and be careful not to cut yourself as you do it. The straighter the cut, the more likely it will hold air when the time comes to test it out.

This is what it should look like if you've done it right. You'll now need to tie the two ends together in a very tight knot that will hopefully be airtight...

It is important to have enough slack to easily tie the two ends together in a tight knot, but at the same time you don't want to use so much tube length as to make reinstalling the now too-small tube back on the wheel difficult. Again, the tighter the knot is, the better chance you'll have at getting out of the bush.

Pump some air into the tube once you've finished tying your knot, putting enough in to allow you to hear if air is leaking at the new joint by holding it up to your ear. There is a good chance that you'll have to undo your first few tries to get a tighter knot before it becomes air tight, but when done right it shouldn't leak at all.

The ''repaired'' tube will now have a much smaller diameter, making it a bit trickier to install than when you first put it in. Put one side of the tire onto the rim and then work the tube up and onto the rim. The tube should stretch enough that once it is onto the rim it will stay there on its own. Now install the other bead and pump up the tire to a bit less than your usual pressure. Remember that this repair is only to get you out of the bush - go around any jumps or drops that you would usually hit and ride well under your limits, stopping frequently to check the tire's pressure. This is especially true if you've repaired your front tire.

Have you used this technique to get out of the bush? Have your own tips to add? Put them down below!

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109 Comments

Score Time

+ 71

Elspecialized (Aug 9, 2011 at 0:53)

If this tech Tuesday would have been shown on Monday I wouldn't have been hiking my bike today... Rats!

xxslopestylerider9x (Aug 9, 2011 at 4:55)

never thought of that but it sounds like a really good idea!

SupremeDork (Aug 9, 2011 at 8:04)

Ditto, Elspecialized. I was riding Schweitzer in Idaho two days ago and went through 3 tubes and 7 patches (all pinch flats). My last run I had to hike down over 2 miles to the village. I don't often ride DH like that with jagged shale EVERYWHERE, so just in case, I've already ordered two DH tubes in case I need em. ;-)

Cmontjumper (Aug 9, 2011 at 10:39)

deffinetly going to helpful for my week trip at Northstar! thanks!

+ 15

VTwintips (Aug 9, 2011 at 11:26)

supremedork, if they were pinch flats, maybe the problem is tire pressure??

Newcombe (Aug 9, 2011 at 11:45)

SupremeDork, i was at Schweitzer last week, and all i can say is that pinch flat holds true to its name,, :'(

meathooker (Aug 9, 2011 at 12:28)

^^^^ + 1

we were there for the race a few weeks ago and those rocks are NASTY! i had just went tubeless and hit my rims several times. would have been walking down if i had tubes for sure!

SupremeDork (Aug 9, 2011 at 12:53)

I'm afraid not, VTwintips. Newcombe said it! The trail is called Pinch Flat for a reason. You need 2.5+ DH tires with 1.5mm+ thick DH tubes at 40PSI minimum I'd guesstimate for best results.

ryfri66 (Aug 9, 2011 at 20:47)

you would still have to have a pump....

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+ 23

Worm-Burner (Aug 9, 2011 at 1:34)

If worst came to worst... http://www.pinkbike.com/photo/6961589/

Rim It Baby...

lance-armstrong (Aug 9, 2011 at 8:15)

who needs tires any way

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+ 14

Excalibur-DH (Aug 9, 2011 at 0:08)

Cool method, but if you're carrying a pump wouldn't you have a spare tube or at least a patch?
Duct tape or plastic notes (like Aus money) also work Smile

.
Worse comes to worse, stuff the tyre with grass and roll slowly home

boo86 (Aug 9, 2011 at 0:26)

I gashed a 2 inch hole in my innertube last month. I had a pump but no spare tube.The hole was too big for a patch.
My normal plan of attack would be pump the tube up as much as possible, ride as far as possible, then repeat. But the air was coming out as quick as it was going in. Knowing about this would have saved me a 2 hour walk =(

Jamesdh08 (Aug 9, 2011 at 0:43)

Has anyone actually tried to do this before? I've tried as a joke at home and it's damned near impossible to get the knot tight enough to achieve an air tight seal
Also, if you're dumb enough to go out on a ride without a tube or patches and far enough away from home not to walk it, or a contingency plan to cover such an eventuality, frankly you deserve to get a flat. $0.02

ilove2crash (Aug 9, 2011 at 5:05)

ive done this many times, i dont cut it in half thou i just tie a knot. and sometimes you get more then one flat when your out. coupe weeks ago buddy got a front flat and his axle was seazied in his fork. so we cut a tube and fixed it like this to get him home

Gorman (Aug 9, 2011 at 5:16)

Cable ties on top of the knot also help.

mikelevy Mod Plus (Aug 9, 2011 at 8:45)

@Jamesdh08,

I've used this method a few times in the past with good results. Even the flat tube that I used to shoot the photos above is still holding air.. that was 4 days ago now!

And it isn't a matter of being "dumb enough" to go on a ride w/o a tube, but rather using all of your tubes or patches up during a ride.

dirtbagluvin (Aug 9, 2011 at 10:19)

I've heard that spitting on the ends helps create a better seal.

+ 24

six66 (Aug 9, 2011 at 13:03)

That's what she said

Jamesdh08 (Aug 10, 2011 at 2:15)

I stand corrected. In hindsight I overlooked the fact that you may have run out of tubes, but rather saw a one-sided argument which you have highlighted. Apologies Mike

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+ 10

johnkoz (Aug 9, 2011 at 9:44)

The best part of this article are all the asinine comments.

We haven't heard this one yet: "This article is useless to me because I never get flats. Oh and I ride every day on thorn bushes and huck 20 footers with 15psi."

I love the Tech Tuesdays articles, keep 'em coming. This one is an ace to keep up your sleeve...

[Reply]

martyn748 (Aug 9, 2011 at 3:57)

When I have been stuck out with no spares I have stuffed the tyre with what ever I found laying around, Potatoes,(or any other root crops) leaves, ferns, any thing. Enough to get it looking tyre shape.
The first mile or so will be eeerrrr bumpy, but once all the folage and veg has been beatten to a pumlp becomes quite good. Enought to ride along the road to safty.

DARKSTAR63 (Aug 9, 2011 at 7:10)

lol

spunky888spanky (Aug 10, 2011 at 9:11)

potatoes are always just lying around. hahahaha

JBR132 (Aug 10, 2011 at 20:00)

idk about potatoes, but foliage would make a pretty good and simple tube substitute.

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spoonyman (Aug 9, 2011 at 4:44)

What happens if you've taken a spare tube... and already used it!?

Oh and last time I asked a tree for a tube, I got my hopes up, but then the bear only had road tubes left :/

(damn it! I meant to hit reply)

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ninjacabana (Aug 9, 2011 at 9:58)

Cool trick! Looks like it would get you back to the trailhead without issue. Nice to see a chain ring being used to cut something useful, instead of my pantleg, ankle, or calf ;-)

Here's a novel solution, courtesy of my pal Vish: He flatted out in the Gatineaus one time, and his riding partner forgot the patch kit he promised to bring. He repaired the flat with a cherry Fruit Rollup.

B'leeeeee-dat.

TomBasic (Aug 11, 2011 at 0:19)

What's the method for repairing with a Fruit Rollup? Do you lick one side or both sides? Or, do you chew it a good ten seconds to make it a wet blob? And, do you lovingly pat it on the punctured area or cram it in the hole? Honestly, I'm really curious....

ninjacabana (Aug 12, 2011 at 12:14)

Like I said, it was my pal Vish who came up with this stroke of genius, and we've lost touch (dude doesn't even ride anymore >sob, and certainly is not on pinkbike). It was a long ago and my memory is a little foggy, but to my recollection it was pretty much a straight application of the rollup. Them suckas are sticky enough that I doubt you'd even need to lick it - I would guess a good approach would be to slap it directly on the tube, or alternately on the inside of the tire. You might lose a little air until the magic combination of fruit-like substance and red dye #5 bonded to the tube/tire interstices, but after that I think you'd likely be solid for another lap.

TomBasic (Aug 15, 2011 at 14:44)

Lol, thanks! Then it becomes a toss-up whether I'm more hungry or need to actually ride back to the car.

[Reply]

thadodublg (Aug 9, 2011 at 7:28)

To all the people commenting on this technique only being used by people that were too stupid or cheap to pack a spare tube....Me and my buddy both had spare tubes with us and we both suffered flats, using up our tubes. On a Gnarly downhill section, he blew his spare riding a bit beyond his skill level. Thank god for the spandex clad lad that came riding by and offered us his spare. Its very odd that we would ever go through that many tubes in a run (sometimes dont use that many in a year). The point is though....This is a cool little trick that could get you out of the bush faster, and alot better than riding on the rim, or filling the tire with trash/leaves....which I have done both of before lol

a12345654321 (Aug 9, 2011 at 17:04)

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Icculus19425 (Aug 9, 2011 at 4:27)

I have done this before but I dont tie the tube together. Cut the tube a not on each end of the tire. so not you just have a straight tube, not a round tube. It works and it can get you home, but you usually get a flat spot in your tire.

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tom34 (Aug 9, 2011 at 3:15)

People still use tubes?? Smile

Other night whilst riding, my mate had a 2 inch rusty iron nail go right through the sidewall of his tire. He only knew about it because it made a a noise hitting a part of his bike as the wheel went round. Once pulled out the sealant did its job and he didn't even need to pump it up! Tubeless is awesome!

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baboony (Aug 9, 2011 at 5:53)

you can also try to patch a puncture with some large leaves or whatever junk you have in your pack such as duct tape, choc bar wrappers etc. I succesfully sealed a puncture using the plastic bag my bread roll came in while doing a super isolated epic ride in new zealand. you won't get it first time, but if you persist you will hopefully eventually get the plastic bag to form a seal while pressed up against rim and tyre.

[Reply]

elcielo (Aug 10, 2011 at 3:53)

Good tip! I always ride with a tube and CO2 cartridge. Through all my years of riding I've been lucky to only get one flat on a day of riding, never 2. But I always wondered what I'd do if I got a 2nd flat on one ride. Now I got a 2nd backup plan. Very basic tech tuesday, but a useful idea. Too many people bashing this tech tuesday, when this could save someones ride someday down the road.

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akirizu Plus (Aug 9, 2011 at 14:50)

Nice I run tubeless now but I've also used the zip ties every 4 inches trick to stop the tire from flopping all over the place but you'd need about 20 ties to do it right and not everyone carries that many at once or at all. I rode TNT top to bottom at Fernie with a blown front from a delayed blow out right as I got off the lift. Zip ties worked about 1/4 of the way down because of all the rocks haha. I'll definitely remember this one though. Thanks!

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DW99 (Aug 9, 2011 at 9:20)

I have used this method a few times, but I do it a different way....rather than tie the two ends together I tie each end in its own over hand knot that you can get really really tight and uses less tube to do so....then it is also easier to put the tube back on the rim and in the tire because it is not a smaller circle now....works well....I have used it when riding in arizona and all our patches got used up because of the bull head thorns, also in the rockies when the guys I was riding with were not prepared and my limited supplies soon ran out.

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AdamLaycockPhoto (Aug 9, 2011 at 0:34)

Another way of doing this is to cut it like shown, but then tie each side of the cut seperately so you have 2 knots and a piece of rubber that can be straight. Then install that. You'll have a little flat spot but it will get you out of the bush like this one.

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mikeinjasper (Aug 9, 2011 at 20:27)

Mike Levy, the majority of us really enjoy TT (subtracting a few kids with nothing better to do but complain). Please keep up the great work, I'm sure one day I'll be thanking you for this one.

hurtinunit (Aug 9, 2011 at 22:39)

Maho, I did this on the overlander once. Worked like a charm!

mikeinjasper (Aug 10, 2011 at 13:10)

Thats awesome!

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p-romano (Aug 9, 2011 at 0:15)

So useful. I have had some sitiations where I was a long way out without a tube. This would have been so useful. But I honestly hope I don't have to use it.

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HenrikY (Aug 9, 2011 at 3:11)

If I'm riding DH I always have my car nearby but when riding XC I could be 20km out in the woods and also riding tubeless, even if I can put a patch on the inside I won't be able to get it to inflate with a small hand pump so then I probably would try stuff it with grass.

[Reply]

Potok (Aug 9, 2011 at 1:35)

I've seen a similar video by Jeff Lenosky, probably here on PB, but he made 2 knots - one on each side of a cut tube (like in the first comment). Seems like many people missed that :-)

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bbeaudoin (Aug 9, 2011 at 16:44)

What happened to tech Tuesday videos sure this is an easy and helpful trick but it's still easier to watch somebody do it instead of pics

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c20leturbs (Aug 9, 2011 at 9:49)

hahahah this is coool, i had to use clothes before as i was 'stuck in the bushes' and yes i did have a spare but my brother used it

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si-paton Plus (Aug 9, 2011 at 14:40)

I thought I knew most things about bikes and Pinkbike again proves me wrong! This just shows you learn something new everyday!

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boo86 (Aug 9, 2011 at 0:22)

This is genious. I don't know why I've never heard of it before. Could have saved me a 2 hour walk last month !

reallybigmantis (Aug 9, 2011 at 2:45)

its genius. cheers.

boo86 (Aug 9, 2011 at 8:25)

That's what I said, genious... Cool whhipp !!

six66 (Aug 9, 2011 at 13:07)

Is that a family guy reference? Big Grin

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Stuffing-Remix (Aug 9, 2011 at 14:32)

A few cable ties instead of a knot works wonders but will only be good enough to get you home. Wouldn't rely on it for long though.

[Reply]

tom666 (Aug 9, 2011 at 4:18)

This looks like it could potentially work. You'd feel a mug cutting your inntertube down the middle though when you have just a pea sized puncture...

[Reply]

deeeight Plus (Aug 9, 2011 at 12:45)

Bunch of uneducated kids in here I swear... this is an ANCIENT method of tube repair... its been published dozens of times over the years. There's nothing particular genius about it. I'm surprised the author didn't include the "stuff your tire with weeds, twigs, and leaves" method also.

[Reply]

mozarle (Aug 9, 2011 at 4:39)

This is what Macgyver would think in case of flat tire.

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shishka (Aug 9, 2011 at 15:00)

Ya tying the tube always works as last resort. This is an old roadie trick but will get you out of the woods if necessary.

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alectyson (Aug 9, 2011 at 5:22)

You can fix them with a lighter pinch the hole and melt it together run it at a low pressure and it will get you home Smile

Nobble (Aug 9, 2011 at 8:55)

umm, I'm pretty sure 99% of tubes are vulcanized. AKA they dont melt

oldfaith (Aug 9, 2011 at 13:53)

they burn pretty good though, I usually take one rolled up tight minus the valve in my camping kit for starting fires in wet conditions.

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luapyen (Aug 10, 2011 at 12:01)

Thanks for another great tech tuesday, I would never have thought of that and it could come in very useful indeed!

[Reply]

skid (Aug 9, 2011 at 12:00)

Did this years ago on my beater bike and rode with it for a good month before I pinched it again and finally changed it out.

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ROL-ANDO (Aug 9, 2011 at 10:35)

ja.. that happen to me last satuday 2 tube 2 flats , and a pump that didt work...

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RafaGamas (Aug 9, 2011 at 4:47)

Nice one. Might come in handy some day

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scottidog (Aug 9, 2011 at 2:19)

Good tech tuesday, cheers

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FatTireTOKWA (Aug 9, 2011 at 7:00)

hmmm interesting!

i guess people will try this even though they carry a spare tube and patch - curiosity's sake...

[Reply]

BryanBobo (Aug 9, 2011 at 14:17)

Man I could have used this last week when I got a flat a mile into a 2.5 mile dh ride. It was a long walk out

[Reply]

jlang (Aug 9, 2011 at 6:38)

cowboy as f*ck

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scott54 (Aug 9, 2011 at 10:45)

Awesome idea Mike. Thanks

[Reply]

mikeserafin (Aug 9, 2011 at 7:02)

very useful to keep in the back of your mind, could save ur ass

[Reply]

carpy95 (Aug 9, 2011 at 0:06)

Sort of a useful tidbit, but meh.

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birvine Plus (Aug 9, 2011 at 0:09)

The whole point was to get out of the bush without walking for god nows how long before you buy a new tube !!!

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sweetonic63 (Aug 9, 2011 at 9:18)

who knew!!! thats Mike Big Grin

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sngltrkmnd (Aug 9, 2011 at 10:14)

Cool tip - I just hope I never have to use it! Wink

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wearitwell (Aug 9, 2011 at 11:36)

Good tip, Why is it that all the uk comments are full or retards.

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keeferinoxiv (Aug 9, 2011 at 11:08)

Or you could just go tubeless.

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SpecializedRider0 (Aug 9, 2011 at 10:24)

Sorry i didn't understand that it was for when you run out of tubes!

[Reply]

mentalz (Aug 10, 2011 at 3:36)

very useful! wasn't aware of this kind of fix...

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noahwalt (Aug 9, 2011 at 13:14)

great idea!

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pokalface (Aug 9, 2011 at 17:56)

nice tip

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conair (Aug 9, 2011 at 11:34)

this is awesome!

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bubbaburger911 (Aug 9, 2011 at 8:18)

thats ghetto

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unaltu (Aug 9, 2011 at 17:45)

This was before.

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JohnRussell (Aug 9, 2011 at 7:02)

This is bull shit doesn't work 99% of the time

mikelevy Mod Plus (Aug 9, 2011 at 8:51)

Really? Maybe you're just noting doing it right... the tube that I used to shoot the photos above is still holding 30psi since I did it 4 days ago.

JohnRussell (Aug 9, 2011 at 10:15)

Yes I'm sure it works a treat every time in the workshop. The problem is when your out in wet and mud this often doesn't work, thats just going off the experiance of mysel and friends.

dirtbagluvin (Aug 9, 2011 at 10:26)

Mike- I'd stop replying to these kinds of people who obviously don't get out in the bush on epics.

[Reply]

mountwasington (Aug 9, 2011 at 21:52)

if your smart enough to carry a pump, wouldent you be carrying a tube too?

mikelevy Mod Plus (Aug 9, 2011 at 22:05)

Really? If you read the intro you would know why this trail side repair is relevant. Sometimes you run out of tubes and/or patches during a ride. Sometimes you forget to replace the spare tube that you used on your last ride.

[Reply]

Below threshold threads are hidden

- 37

SpecializedRider0 (Aug 9, 2011 at 0:07)

Just buy a new tube!

+ 27

dannythekiwi (Aug 9, 2011 at 0:10)

You can't buy a new tube in the bush!!!

+ 33

aganjaholic (Aug 9, 2011 at 0:12)

in the bush?!
- Uhm, excuse me mister tree, would you get me a dh tube for my bike.
- Just wait here, i need to check with my staff. - Hey, bear, do we have any tubes left?
- Nah, bro, we're sold out...

On topic: Last weekend my buddy got a flat and since we didn't have anything to do about it we just filled the tire with pine tree branches, it held long enough to get out of the bush without the need to push the bike down and walk beside it. But if you have a pump that sounds like a real trick.

- 13

SpecializedRider0 (Aug 9, 2011 at 0:23) (Below Threshold) show comment

dannythekiwi: When i go DH biking i always take some new tubes with me!

tom-cuthbert (Aug 9, 2011 at 0:36)

Maybe when you're DH'ing, and have a bag at the bottom or in the car doing runs. But not always when you're out on a Local XC loop or something.

SpecializedRider0 (Aug 9, 2011 at 0:56) (Below Threshold) show comment

Yes then it is very useful! I didn't say that it isn't usefull but it is better when you have a new tube with you.

connor-rix (Aug 9, 2011 at 1:05)

Yea well this is for when you DO NOT have a tube. Key word here DO NOT

+ 11

dingus (Aug 9, 2011 at 2:45)

This is for when you puncture your spare tube too...

mvonhollen (Aug 9, 2011 at 8:08)

DING DING DING we have a winner!

+ 12

mikelevy Mod Plus (Aug 9, 2011 at 8:54)

@SpecializedRider0

I don't think that your reading comprehension is quite up to par.. The article is about what to do if you get a flat and have already used your spare tube(s) or patches and are out in the bush.

dannythekiwi (Aug 9, 2011 at 9:12)

Thank you Mike!!!

SpecializedRider0 (Aug 9, 2011 at 10:36)

Sorry i didn't understand that it was for when you run out of tubes!

[Reply]

- 14

stephenhumphries (Aug 9, 2011 at 4:37)

really,this is fairly lame for a tech tue,i know some have been marginal but this is really insulting,if we cant fix a flat how can we be expected to even type note?c'mon guys give your followers of PB a bit of cred

+ 11

brule Mod Plus (Aug 9, 2011 at 8:11)

Stephen, one day while out in the middle of nowhere with a flat and you are out of patches, new tubes etc, you may thank Mike for this TT as you sit down and do what he's shown you here. These TTs are not always going to amaze everyone, but you can bet that they are helping folks each week.

lance-armstrong (Aug 9, 2011 at 8:16)

true true

mikelevy Mod Plus (Aug 9, 2011 at 8:50)

@stephenhumphries,

Hey Mr. Negative Pants, it isn't just about fixing a flat. The majority of riders that I know weren't aware of this trail side repair, but all know how to swap out tube. I always carry multiple tubes and a patch kit, but have actually run out during a few long and eventful rides and this job has got me out of the bush a few times in the last 15 years. If it has helped me, it will help others. I'll give you a bit of cred though and assume that you were just having a bad day when you said that this TT is "insulting"... how can you find a helpful article that we took the time to put together for you insulting? I have no idea.

g123 (Aug 9, 2011 at 9:16)

+1 to brule and levy - I've used a similar technique on the trail when I've either given away my last spare tube, or just forgotten to restock my pack. The method I've used though, is to tie 2 tight overhand knots in each end of the cut tube, so you end up with a long "hotdog" tube. It's a bit easier to get 2 tight knots this way. When you stuff it back in your tire, you end up with a small flatspot but it's good enough to get out and off the trail.

And 98% of the riders I've told this to had never heard of it, and thought it was ingenious. It works amazingly well if you take the 2 mins to do it properly.

stephenhumphries (Aug 9, 2011 at 18:08)

yeah sorry bout that,was having a bad day,you guys doing a great job,def something new every week to come up with is difficult and something i guess i couldn't do,sorry for the comment,
(Mr negative pants,funny)

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Vaili (Aug 9, 2011 at 5:50)

If your tire blows, fck it up and buy a new one.

mikelevy Mod Plus (Aug 9, 2011 at 8:52)

Reread the article. This isn't about tires or how to repair them, but rather what to do when you get a flat way out in the bush and don't have a spare tube or patches.

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