Carrera subway crank

[koicarps]

hi I need a bit of help in a carrera subway 1 with 14 gears the crank sprockets are worn and I need to replace them in been to my local dealer and he has said that suntour have discontinued them dose anyone know what alternatives I can buy. Thanks

 

[Sharky]

Do you mean the front chainrings or the rear sprockets?

 

[fossyant]

Depending upon the crank set, you may have to buy a new one, especially if you can't remove the chain rings - some are rivited.

 

[Cycleops]

I believe it’s a triple. Assuming it’s a square taper bb you can pick up a crankset for not much more than the rings:
https://www.sjscycles.co.uk/chainsets/sunrace-triple-chainset-423424t-170mm/

https://www.sjscycles.co.uk/chainsets/sunrace-triple-chainset-with-detachable-rings-423222t-170mm/
If the largest ring is bigger/smaller than your existing you’ll need to move the front derailleur. You’ll also need a crank extractor, (you can just wack it off if you don’t want to save it)) thats if you diy.

 

[Ajax Bay]

Have a read of this thread - my (and others') suggestions hold good for you, too.
@Cycleops How can it be a triple with "14 gears"?
But I agree - just get a new chainset which requires (and can use the current) same square taper bottom bracket (and spindle length). Doesn't have to be 'Suntour'.
From the Halfords site:
"Efficient modern gears
To enhance the riding experience, we have also upgraded the drivetrain on the new Subway 1, moving from a triple chainset to a 2x (2 by)."
You have to laugh - I suppose they have to write something.

 

[cyberknight]

the aerly subway 1 did have a double on them, best thing to do is count the teeth on them and see if thy are riveted or have bolts holding it together as i cant remember .If its bolts you can search for replacements making sure you get the right number of bolts and BCD , if its rivits you need to buy a replacement crankset ,
https://www.wolftoothcomponents.com/pages/how-to-measure-bolt-circle-diameter-bcd

 

[Cycleops]

Missed the 14 bit @Ajax Bay not too well up on modern machines but I know I can rely on your eagle eye .
On a budget bike that they’re almost certain to be riveted aren’t they?

 

[koicarps]

Its a double and they are bolted on i would get a whole new crank set but someone told me it has to have the right offset so wouldn't no which one to buy

 

[koicarps]

Do you mean the front chainrings or the rear sprockets?

Front changrings

 

[Ajax Bay]

You have two choices, then.
1) Buy two new chainrings. These are defined by their BCD (bolt centre diameter, probably 110mm, see @cyberknight 's link) and how many teeth they have. And don't choose 10 speed ones (they will be more expensive anyway).
Swapping the chainrings (you say need replacing - am surprised - have they done 20,000km+?) is easy with an allen key and a screwdriver.
2) OR buy a new chainset. Your BB (will be 68mm wide) bottom bracket has a spindle length which you can measured. Each chainset has a specified BB spindle length (to get the chainline about right and make sure the front mech can reach both rings). Find a chainset which needs, roughly, the BB spindle length you have, or buy a new BB (UN-55) to match the new chainset. Tools have been mentioned up thread.
There are useful links in the other thread.