crank arm problem...

jon 0.1

hey, the crank arm on my big hit 1 keeps getting loose and falling off, has anyone else had this problem because i got it with my last bike too?
any suggestions on how to stop this would be greatly appreciated as its really getting to be a bit of a problem...
thanks

tmg

stick some loctite on it

nicklouse

what are the cranks? and what is the interface between the arm and the bb?

jon 0.1

uh its truvativ and 170- its just on the spare arm really? should i just replace it?

tmg

by spare arm do u mean non drive side?

I'd try to some threadlock on it, if that doesn't cure then go for new

skyliner

You should check them periodically, as they tend to work loose under load. If you don't, and they come off, it's usually too late to save them. But try threadlock as a last resort anyway, it might work for a while.

Mr bump

My mate had the same problem. We put on some loctite and hey presto problem solved.

jon 0.1

yeh sorry none drive side- ive been putting loctite on it and forever tightening whenever possible...
oh can you buy the single arm on its own?
thanks everyone

WillGTJumper

Its fucked and i dont know. I had that problem with a Truvativ crank on the non drive side.

j00n

Hi yeah i have had the same problem with my Specialized hardrock.
So if anybody can suggest any other reasonable replacements that would be great as a mate of mine has had the exact same problem with his.

(just for the record i have no idea when it comes to biking lingo so talk to me like a child lol)

As far as price is concerned then cheaper the better really but i would be willing to pay a bit more for the extra quality.

supersonic

Is it just the left hand crank, or the right hand crank?

Splasher

jon 0.1 wrote:

uh its truvativ and 170- its just on the spare arm really? should i just replace it?

If it's a spare arm, just leave it at home :oops:

j00n

mine is just the left arm and so is my mates so i am guessing it is a common problem.
its just soooo damn annoying :x

supersonic

You can often buy seperate left hand cranks.

j00n

yeah? i have looked but cant seem to find any anywhere.

have any hints?

supersonic

Halfords sell generic ones, but do check length and axle type (ie square taper, ISIS). I would try the LBS - can often order them in.

jon 0.1

Splasher wrote:

jon 0.1 wrote:

uh its truvativ and 170- its just on the spare arm really? should i just replace it?

If it's a spare arm, just leave it at home :oops:

yeh sorry that was my attempt at naming it- what i meant to say was the offside arm
cheers

oh btw this has happened to me before and i got one from my local bike shop probably worth a try
unfortunatly they dont stock mine

Splasher

Sorry about the joke, couldn't resist.

We used to superglue threads in the aero industry. You could try that, much stronger than loctite but not so strong you can't break it with a socket wrench if you need to take it off.