Stripped thread on crank

[Grievesy]

right then. The other day while commuting to work i noticed a wobble in my left pedal about a mile in. This got progressively worse until around the 5 mile mark i pulled over and the pedal just fell off when i took my foot off it. I checked the crank and the thread has been completely stripped. I have no idea how this has happened as ive not touched the pedals since the lbs put them on around a year ago. Obviously im going to need a new crank however i cant find another SRAM S SERIES left hand crank only. So i was thinking of upgrading to SRAM Rival. I run a 1x11 setup so its not as expensive as some would think. I currently have 42t at the front and i find as soon as it comes to any downhill i spin out right away and wouldnt mind some more teeth for a higher top speed. Question is ive found one that has 50t. Is this too much of an increase or should i just buy a 44-46t?

Also. All SRAM are compatible yes? I am assuming so. And ill be youtubing how to fit it myself. Bugger the lbs. Should i do the bottom bracket at the same time? Bike is only a year old but i commute on it daily. Prob done 2k miles.

Thanks in advance for any advice.

 

[Ajax Bay]

ive not touched the pedals since the lbs put them on around a year ago

More normal for people to complain they can't take the pedals off after they haven't "touched" them for a year.
Going from 42t to 50t will mean you spin out at a much higher speed but makes your lowest gear much 'longer' - will not be an issue during a commute. You can do the math.

 

[T.M.H.N.E.T]

Yeah it'll have the GXP bottom bracket, might as well take the bb out and regrease it while you're there

re:teeth - dunno.. I have the 2x11 version

 

[silva]

I assume this is about a singlespeed or fixed gear?
42 to 50 is a serious gear increase. If you're used to 42 it's quite likely that a WTF text balloon will appear above your head at the first uphill.

 

[T.M.H.N.E.T]

It's 1x11

 

[Grievesy]

yup its a 1x11 setup. I was thinking 50t might be too much. Probably going to shop around for 44t or 46t. Will still have my 42t i can keep for spares

 

[raleighnut]

I assume this is about a singlespeed or fixed gear?
42 to 50 is a serious gear increase. If you're used to 42 it's quite likely that a WTF text balloon will appear above your head at the first uphill.

No it's an 11 speed single front ring system.

 

[flake99please]

If you can get a helicoil in the right size, that would be a quick & relatively inexpensive fix

 

[T.M.H.N.E.T]

That's messy but repairable on the off chance a local shop has a 9/16-20 helicoil kit and a 5/8-24 LH tap