CARRERA VULCAN E 2017 BOTTOM BRACKET

daverave

Finding my (electric) wheels
Jun 24, 2025
22
1
Could any one tell me the correct size for a bottom bracket....halfords do not stock them which is hard to understand as the bike is one of their products.
 

thelarkbox

Esteemed Pedelecer
Aug 23, 2023
1,671
519
oxon
halfords web page for this bike? details this bottom bracket spec?

Sq taper, 68mmx126mm,


If not its perhaps worth exploiting distance selling and next day delivery and buying one matching the above spec and measuring which if any dimensions are incorrect and return/re-order accordingly?

an ebay 'carbon fibre' set of digital callipers can be picked up for less than a fiver (probably?) ali express otherwise..
 

daverave

Finding my (electric) wheels
Jun 24, 2025
22
1
I have since found out that the part i need is a suntour BB15ATS-SQS as i have the 2017 carrera vulcan...halfords have none of these so im looking now for a secondhand one.
 
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Nealh

Esteemed Pedelecer
Aug 7, 2014
21,678
8,825
62
West Sx RH
It still makes me wonder why folks deal with Halfrauds for bikes especially the Suntour system bikes.
 

daverave

Finding my (electric) wheels
Jun 24, 2025
22
1
I think halfords are useless as they cannot supply most of the parts...not even a bottom bracket for one of their products.
 

saneagle

Esteemed Pedelecer
Oct 10, 2010
9,352
4,157
Telford
I think halfords are useless as they cannot supply most of the parts...not even a bottom bracket for one of their products.
You can't blame Halfords. Nearly all ebikes suffer from this problem. The technology is changing all the time as manufacturer's find ways to make them better. The only way to guarantee that you'll get spare parts when you need them is to buy a bike from a brand that promises you that service (e.g. Wisper) or to buy a bike that has standard modular parts, which can be replaced with other standard modular parts.

Thousands of weird and wonderful ebikes have been and gone. They're OK as long as they work, but sooner or later they will metamorphose into a garden trellis.

You should always avoid bikes with bespoke parts. Exceptions are long-standing brands like Bosch, where their popularity means that there will be a lot of spares around. I can't name every brand and model. Just use common sense, and do a bit of research if you have any doubt.