2017 Genesis Croix de Fer rear hub identification help

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backnotes
Posts: 625
Joined: 16 Jan 2011, 8:36am

2017 Genesis Croix de Fer rear hub identification help

Post by backnotes »

My daughter has just bought a secondhand (2017) Genesis CdF 20. The back wheel wobbled side to side by about half an inch, and the cones seem pitted / shot. There were 22 ball bearings in all rather than the 18 I was expecting (there’s a ledge in the shell behind the freehub and some seemed to be lodged in there without fouling the axle), and the dust cap on the disk side had broken so there was a sheared-off metal ring from that loose amongst the ball bearings. The axle seems straight next to a metal ruler.

It may be salvageable with new cones / axle and a new metal dust cap. But first I need to ID the hub, which has no identifying marks I can find apart from a part / serial number T05042500043 shown in the image below. Google suggests it may be a “Joytech D341RCC/D342RCC 32h / front / rear / 6-bolt” - a brand I have never encountered before. It seems to be 135mm OLN.

I can find similar-looking hubs like this one https://www.ebay.co.uk/itm/392273340734 as a potential source of parts, with the backup option of a complete rebuild including the shell. Or I can find a different rear hub with the same (or different) PCD and simply build a new wheel.

Thanks for any help ID-ing the hub I am dealing with here. It matches the front hub, so I am assuming they both came with the bike.


Drive side
Drive side
Non-drive side - note jagged edge where cap sheared off
Non-drive side - note jagged edge where cap sheared off
Part or serial number on hub shell
Part or serial number on hub shell
rareposter
Posts: 2144
Joined: 27 Aug 2014, 2:40pm

Re: 2017 Genesis Croix de Fer rear hub identification help

Post by rareposter »

backnotes wrote: 24 Apr 2024, 1:20pm Google suggests it may be a “Joytech D341RCC/D342RCC 32h / front / rear / 6-bolt” - a brand I have never encountered before. It seems to be 135mm OLN.
Joytech is an entry-level OEM (original equipment manufacturer) - basically they supply parts, sometimes under their own brand and sometimes branded up as others to bike manufacturers.

Quite honestly, it'll almost certainly be cheaper and easier to just buy a new rear wheel than trying to track down individual parts for a hub like that. They're sort of on the disposable side at the best of times unfortunately and if it's been in that state for a while, it's probably beyond reasonable repair.

Try somewhere like bikeparts.co.uk who specialise in one-off budget things like wheels (rather than having to buy a pair). Can often pick up individual wheels for <£50 at places like that.
backnotes
Posts: 625
Joined: 16 Jan 2011, 8:36am

Re: 2017 Genesis Croix de Fer rear hub identification help

Post by backnotes »

Thanks rareposter. Yes - these wheels seem to be at a price / quality point I don't often encounter. My default setting is to always try and fix things, but in this case what you would end up with wouldn't be that wonderful. I'll investigate something new / better as you suggest.
Cyclothesist
Posts: 309
Joined: 7 Oct 2023, 11:34am
Location: Scotland

Re: 2017 Genesis Croix de Fer rear hub identification help

Post by Cyclothesist »

It may be fixable. Bikeinn do Joytech hub spares. The cones are cheap as are the complete axles so it likely worth risking a couple of quid on some new cones.
https://www.tradeinn.com/bikeinn/en/spa ... 2-14648/sm
Brucey
Posts: 44842
Joined: 4 Jan 2012, 6:25pm

Re: 2017 Genesis Croix de Fer rear hub identification help

Post by Brucey »

I agree, providing the cups are OK.

If the cups are not OK, I do not think that the has been a hub made which cannot be converted to cartridge bearings, using fairly simple tools and materials.

Hub dust covers are only made in a few different sizes, so it should be possible to find something else that fits, even if you have to glue it in place. If all else fails, it isn't difficult to make your own dust covers, using little more than an electric drill.
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rareposter
Posts: 2144
Joined: 27 Aug 2014, 2:40pm

Re: 2017 Genesis Croix de Fer rear hub identification help

Post by rareposter »

backnotes wrote: 24 Apr 2024, 2:13pm My default setting is to always try and fix things, but in this case what you would end up with wouldn't be that wonderful. I'll investigate something new / better as you suggest.
There's an industry wide issue with hubs in that spares can often cost nearly as much as a new hub. And a new hub can be nearly the cost of a factory built wheel.

Servicing is fine but with major repairs when you find a S/H wheel of unknown provenance and it needs a new axle, cones, bearings etc and even then you have little idea if it'll all work again, you very quickly run into the economics argument and buying something new, with a warranty and perhaps a bit more peace of mind becomes a more practical option.

🤷🏻‍♂️

But it's not ideal from a sustainability point of view.
Brucey
Posts: 44842
Joined: 4 Jan 2012, 6:25pm

Re: 2017 Genesis Croix de Fer rear hub identification help

Post by Brucey »

using just a dremel tool, a drill, and an angle grinder, it is readily possible to convert (at low cost) even a joytech hub so it is as smooth as the most expensive hubs, and more durable than any currently on sale.
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Cyclothesist
Posts: 309
Joined: 7 Oct 2023, 11:34am
Location: Scotland

Re: 2017 Genesis Croix de Fer rear hub identification help

Post by Cyclothesist »

I have a set of Joytech hubbed wheels on my CX. They're standard cup and cone, easy to service and run as smoothly as my lighter and more expensive Shimano wheels. I think they're actually pretty good.
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