Carerra Subway 1 Crank Arm

[megmax]

I threaded my husband’s brand new pedal. Crank arm needs replacing and Halford’s doesn’t have the part. I’m trying to source it from somewhere else. What part do I need? It’s this bike in large.
https://www.halfords.com/bikes/hybr...ike-2020---grey---s-m-l-xl-frames-346126.html

 

[TheDoctor]

If you look on the back of the crankarm, it should have the length in mm - either 175 or 170mm. then look on ebay.
I'm hoping it's the left hand crank - the one without the sprockets on.
If it's the one with the sprockets, your cheapest option may well be a whole new chainset, which isn't stupidly expensive.
I'm assuming you cross-threaded the new pedal?

 

[sleuthey]

Sometimes chainsets state they are best used with a certain length of bottom bracket. If so on the one you purchase, check your bb length by measuring from the end of one square taper to the other.

 

[Ajax Bay]

It's a square taper (SqT) chainset. Assuming it's a replacement left hand crank you need, any SqT crank will fit (as @TheDoctor says the 170 or 175 will be stamped on the inside of the crank) - the 'Large' will be a 175mm long crank.
E.g.: https://www.spacycles.co.uk/m8b0s109p3953/SPA-CYCLES-TD-2-Left-Hand-Crank £12 (170)

 

[Cycleops]

Cross threading your husband's crank arm, that's grounds for divorce on here
Sourcing a replacement in the correct size shouldn't be difficult. @Ajax Bay 's suggestion looks good.

 

[iluvmybike]

Your LBS may well have a box of nds crank arms - they may be able to get a close match for a few pennies

 

[Cycleops]

....or you could ask the good folks on here if they have a black Sq T crank arm in black in the correct length kicking around.

 

[iluvmybike]

....or you could ask the good folks on here if they have a black Sq T crank arm in black in the correct length.

and the right shape - on some crank arms the square taper hole is sideways on so looks like a diamond rather than a square - if yuo get my drift

 

[Drago]

According to Halfords website its 170mm on the small and medium frame sizes, 175 on L and XL frame sizes.

If you're planning to replace it yourself you'll need a suitable crank extractor to remove the old otem.

Is the thread really knackered? Have you triwd fitting the pedal to the inside of the crank and winding it in all the way to chase the thread out from the opposite side? It costs nowt somit worth a try.

 

[Chislenko]

Basic question, depending on which side it is, are you screwing it the correct way?

 

[Ajax Bay]

are you screwing it the correct way?

Be careful. Edit: @Fnaar . Deleted.
I would follow @Drago 's advice on screwing in from the 'inside'.

 

[Chislenko]

Be careful. You risk (not unreasonably) to be accused of mansplaining.
Give the OP credit.
I would follow @Drago 's advice on screwing in from the 'inside'.

The sex of the original poster was not uppermost in my thoughts at the time of posting and until your post did not know the original poster was female.

I feel sure that are many millions of people dotted around the world of both sexes who don't know that cycle pedals both don't screw in clockwise in much the same way I have no idea what mansplaining is.

Really don't feel your attack was warranted.

 

[Ajax Bay]

@Chislenko You're right. I'm guilty of assuming that the OP is female: I don't know.
My post failed to add value: I have deleted most of it.

 

[weareHKR]

The sex of the original poster was not uppermost in my thoughts at the time of posting and until your post did not know the original poster was female.

I feel sure that are many millions of people dotted around the world of both sexes who don't know that cycle pedals both don't screw in clockwise in much the same way I have no idea what mansplaining is.

Really don't feel your attack was warranted.

Quite a few Traffic Wardens in here mate, they find it the best way to encourage new members to make a meaningful contribution!
Personally, I just skip past the snowflakes!

 

[Drago]

Personally, I just skip past the snowflakes!

That leaves me and Accy. The pair of us must make for riveting reading!

On a serious note, it would be nice to hear back if my screw-the-pedal-from-the-other-side trick worked. Never had to do it myself, but have heard of instances where folk have mullered the outer mm or so of thread and this rescued it.