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Just how much does a missing spoke compromise a wheel's strength?

I Are Baboon

The Full Dopey
Aug 6, 2001
32,425
9,473
MTB New England
So last night as the wife and I were at the trailhead about to start our ride, I noticed my rear wheel was missing a spoke. Seeing how I don't carry spare spokes, nor would I know how to put one on and true the wheel, I said "Screw it" and rode the nine mile loop with a missing spoke. I'm just curious how bad of an idea that was. I figure it was just one spoke...the wheel's got a bunch more to pick up the slack. :D

I did take it easy on the ride, i.e. no hucks, drops, or playing on stunts.
 

binary visions

The voice of reason
Jun 13, 2002
22,100
1,150
NC
Back when I was a broke high school student and unable to afford very much, broken spokes got wrapped around the spoke next to it and ridden.

Not sure how much it compromises the wheel's strength but my buddy and I often had upwards of three broken spokes on our bikes at a time and never had a problem because of it. :think:
 

I Are Baboon

The Full Dopey
Aug 6, 2001
32,425
9,473
MTB New England
Yeah, I figure even if the wheel decided to fail, what's the worst that would happen? I'd fall.

After the ride I told the wife that I think I need a new wheelset. She wasn't too warm to that idea. :rolleyes:
 

binary visions

The voice of reason
Jun 13, 2002
22,100
1,150
NC
It's too bad she's a mountain biker. Otherwise, you could give her the old, "What? No, you can't just replace one spoke. You need to replace the whole wheel. And you have to buy wheels in pairs."

:D
 

stosh

Darth Bailer
Jul 20, 2001
22,238
393
NY
I Are Baboon said:
I'm 175 but it's ALL muscle!

I'm just thinking in my phat a$$ case the one time I rode with a bent spoke I bent more.
 

Wumpus

makes avatars better
Dec 25, 2003
8,161
153
Six Shooter Junction
I've ridden with a missing spoke for a few rides. The only concern is that if you lose one then you throw the tension of the reamining spokes off, but if you check them and make sure the rest are tight it shouldn't be an issue.

And learn to true a wheel, it can save your ride one day.
 

binary visions

The voice of reason
Jun 13, 2002
22,100
1,150
NC
Wumpus said:
And learn to true a wheel, it can save your ride one day.
:stupid:

Truing wheels is much, much less of a mystery than most people think it is.

Easy mechanical interaction: half the spokes are pulling the rim one way, half the spokes are pulling the rim the other way. If you loosen the nipples on one side and tighten them on the other, the rim will move in the direction of the tightened spokes.
 

jacksonpt

Turbo Monkey
Jul 22, 2002
6,791
59
Vestal, NY
I rode the bulk of a season with a busted spoke. I don't think it's crucial if you keep half an eye on the tension in the other spokes.
 

DHracer1067

Turbo Monkey
Sep 16, 2003
1,189
0
somewhere really ****ty
I had 2 broken spokes on the rear wheel of my dirtjump/street hardtail and it was like that for around a year before I got around to doing anything about it and the wheel was still true and pretty much fine. I'm only 130 pounds though.
 

urbaindk

The Real Dr. Science
Jul 12, 2004
4,819
0
Sleepy Hollar
It will totally throw your wheel out of true. Not too big a deal if you have disc brakes. Just make sure that your tire does not rub the frame. That is a sure fire way to ruin your frame really quick.

The trail / trail head fix is to loosen the 2 adjacent spokes by 1/4 or 1/2 a turn. This will relieve the tension and the wheel will come back into true and will get you out of the woods (or into the woods in your case).

Just don't do anything stupid like huck to flat or something and you'll be fine.
 

Ciaran

Fear my banana
Apr 5, 2004
9,839
15
So Cal
binary visions said:
:stupid:

Truing wheels is much, much less of a mystery than most people think it is.

Easy mechanical/spritual interaction: Light five black candles. Find a live chicken and sacrifice it to Biker Fox by plunging the broken spoke into it's heart, but save the blood. Paint your rim with the blood and spin it counter clockwise. If you loosen the nipples on one side and tighten them on the other, the rim will true on it's own, powered by satan.
It's a black art, I'm tellin ya!
 

vibiker

Monkey
May 3, 2004
732
0
Santa Clara / Vashon
I Are Baboon said:
I've been meaning to learn how to true. I mean, I own a truing stand so I might as well learn how to use it. :think:
Do it. I finally put my 2 year old truing stand to work and built myself a DH wheel last month. Much easier than I thought. Just a little time and patience. And the finished product is pretty sweet, IMHO.:thumb:
 

SilentJ

trail builder
Jun 17, 2002
1,312
0
Calgary AB
I've done some pretty hard DHing for an entire 3 day weekend with 3 spokes gone from my front wheel. I did need to tweak the tension a little to keep things straight, but I didn't have any problems. I weighed about 210# without gear at the time. Personally, I wouldnt do anything about one spoke missing until I had to take the tire off.
 

BrandonWatts

Monkey
May 4, 2005
190
0
raymond, WA
i am 265 and have 2 broken spokes right now on my rear wheel and ride some pretty had dh and have no real problem with the wheel. it needs trued and 2 new spokes but that is about it.
 

RenegadeRick

98th percentile on my SAT & all I got was this tin
binary visions said:
:stupid:

Truing wheels is much, much less of a mystery than most people think it is.

Easy mechanical interaction: half the spokes are pulling the rim one way, half the spokes are pulling the rim the other way. If you loosen the nipples on one side and tighten them on the other, the rim will move in the direction of the tightened spokes.
You are a brilliant man.

Tonight, I used your simple, easy to understand technique to true my wheel today after replacing my broken spoke. It got a wheel that was way out of whack nearly true in about 5 minutes.

You should film an infomerical and sell this knowledge. Certainly people would make 3 easy payments of $19.95 to have the wheel truing skills you could provide.
 

MOVIN

Chimp
Jun 21, 2006
6
0
Oh Just Fix It!!!!!


If You Don't It Will Only Get Worse.....
When I Break;) Spokes On A New Rim I Just Rebuild It With Stailess Spokes And Do A Cross 4 Pattern.then They Last Forever
 
ive gotn 3 missing on my back wheel and its been that way for months- not much has happened, i have noticed that the rest of my pokes are loose though... what do i do to fix them, just tighten the nipples or what?
i weigh 165 and i do a very mixed style of riding- from hucking to enduro through ravines on a 43 pound bike- the rim only has slight hops in it around the areas where the spokes are missing
 

binary visions

The voice of reason
Jun 13, 2002
22,100
1,150
NC
RenegadeRick said:
Tonight, I used your simple, easy to understand technique to true my wheel today after replacing my broken spoke. It got a wheel that was way out of whack nearly true in about 5 minutes.

You should film an infomerical and sell this knowledge. Certainly people would make 3 easy payments of $19.95 to have the wheel truing skills you could provide.
:rofl:

If you act now, the first payment is FREE!

I'm glad I could help. The fine tuning is a little tougher because it's sometimes hard to judge how many spokes need to be tweaked, but you can get a wheel roughly true in no time at all.

Ciaran said:
It's a black art, I'm tellin ya!
I don't know how I missed this post before :D :thumb:
 

vibiker

Monkey
May 3, 2004
732
0
Santa Clara / Vashon
cheetaprowlerDH said:
ive gotn 3 missing on my back wheel and its been that way for months- not much has happened, i have noticed that the rest of my pokes are loose though... what do i do to fix them, just tighten the nipples or what
Well you could wait for a complete failure of your wheel or you could replace the 3 spokes (for starters).:rofl:

After you replace them, you could just tighten all the loose nipples, but chances are your wheel will be badly out of true. At this point, take your wheel to your LBS, fork over about $15, and have them true it for you.:clue:
 

golgiaparatus

Out of my element
Aug 30, 2002
7,340
41
Deep in the Jungles of Oklahoma
Not sure how much it weakens the wheel as a whole but I know that when I bust a spoke and then replace it the next few weeks are always filled with a slew of busted spokes, usually the ones around the original spoke that broke. Probably best to replace and tension the 2-4 supporting spokes around the one that initially snapped.