Sram EX1 cassette...spacings and thickness?

[Barrio Barranco]

Ok, so a replacement EX1 cassette will break the bank...does anyone know if a standard 8 speed MTB cassette has the same spacings between the cogs and would the EX1 indexing be compatible?
Could I replace the EX1 with less than 10km on it(as new- then Ebay it!) for this-

https://www.ebay.co.uk/p/SUNRACE-M6-8-speed-11-40-Wide-Ratio-MTB-Mountainbike-Cassette-Silver/26024412490?iid=132804450732&chn=ps

The only difference is loss of the 48T but then a closer set of gears obviously not the 24/32/40/48 lowest 4 with a jump of 8 teeth at present...

I'd be happy to stick with 8 speed as the chains are probably more robust- would the EX1 chain fit this cassette?? Or would I need to replace the whole drive train?

Time to buy some Vernier calipers??

 

[Barrio Barranco]

Hmmmm....there's a bloody thick spacer between the 48t and the wheel so no, I doubt the standard 8spd would have the same thicknesses and spacings....they've made a narrow 8spd to keep a tight chainline?? Be curious to measure the widths and see what could be made to fit lol...

 

[Fat Rat]

I was going to reply but you have answered your own question
The ex1 with its spacer still takes up the room of 11 speed cassette
I wouldn’t worry if your happy stick with it and change when it wears out which could be years off

 

[anotherkiwi]

What I have read about it is that it is a complete drivetrain. The cheap solution is to move to a Sunrace 10 speed 11-46 cassette and Shimano derailleur and shifter.

 

[soundwave]

https://www.chainreactioncycles.com/sram-pg-1230-nx-eagle-12-sp-cassette/rp-prod172457

https://www.chainreactioncycles.com/sram-nx-eagle-12sp-rear-mech/rp-prod172466

https://www.chainreactioncycles.com/sram-nx-eagle-12sp-rear-shifter/rp-prod172470

https://www.chainreactioncycles.com/sram-nx-eagle-12sp-chain/rp-prod172458

£193

 

[Barrio Barranco]

Thanks for all the replies, just have to see what happens in time as Fat Rat says it's a long way off, but at least i know the options and solutions at the moment!!

 

[soundwave]

last set sold for £171 so would be a big loss if you sold it. tho i doubt it will even still be made buy the time it wears out.

https://www.ebay.co.uk/itm/Sram-Ex1-Ebike-Groupset/352548199737?hash=item5215829d39:g:rm0AAOSw86BcGSVE

 

[anotherkiwi]

The mistake they made was making an 8 speed wide range drivechain for e-MTB. If they made a wide range 8 speed drive train for trekking/commuter bikes with even spacing between gears it would be a much better option than a nexus 8 IMO.

 

[Barrio Barranco]

£171 for the whole groupset- didn't really say how "used" it was though... Yeah think this is a huge white elephant from SRAM created with the best intentions but never gonna be competitive :

white elephant
noun

1. a possession that is useless or troublesome, especially one that is expensive to maintain or difficult to dispose of.
   "a huge white elephant of a house(groupset?!) that needed ten thousand spent on it"
   
   
   

 

[soundwave]

i had a xo1 11 speed group set b4 i went eagle but that cassette new was about the same price @350 tho now there around 200.

for 250 i got the hole eagle gx group set new and sold the old one for about 150 quid on ebay with 3000+ miles on it lol.

 

[Barrio Barranco]

https://www.chainreactioncycles.com/sram-pg-1230-nx-eagle-12-sp-cassette/rp-prod172457

https://www.chainreactioncycles.com/sram-nx-eagle-12sp-rear-mech/rp-prod172466

https://www.chainreactioncycles.com/sram-nx-eagle-12sp-rear-shifter/rp-prod172470

https://www.chainreactioncycles.com/sram-nx-eagle-12sp-chain/rp-prod172458

£193

The cassette, far from being weak, states-
"This cassette is also designed to be durable enough for the extra demands and abuse of E-MTB use"....

SO what EXactly was the point in EX1 ??!! If this is capable of ebike demands then when EX1 is dead the conventional stuff will only get better by the time I need it!

 

[soundwave]

SO what EXactly was the point in EX1

£££££££££££££££££££££££££££££££.=ebike

you get less gears for the price of the most gears. and as a bonus its even heaver pmsl.

 

[soundwave]

 

[Barrio Barranco]

Couldn't help but grin when I looked at the 2019 Lycan 274 groupset.....SoundWave you 're ahead of the game!!

Spec looks down on what I got in other areas(notably forks and wheels) but this must have knocked their RRP down a fair chunk by ditching EX1 (RIP)...

http://www.flidistribution.co.uk/ebikes/offroad-e-bikes/full-suspension-ebikes/2019-ktm-macina-lycan-274

 

[soundwave]

go on bike radar and big up 8spd pmsl ex1 makes no sense at all now eagle 12spd is available and way cheaper.

tho i have gx as got a xd driver on my mavic dmax pros so it costs a bit more than the nx version.

i also got 2 front sprockets 20t and 18t manual change tho.

 

[Barrio Barranco]

What sprockets would need to go with the NX Eagle 12 spd chain? I'm assuming that the sprocket for the 8 spd EX1 would be too thick for 12 spd? The cranks would probably be ok to keep....

 

[soundwave]

14,15,16,18t only tho https://www.pro-cycling-golla.de/E-Bike_Ersatzteile_/_Hersteller_/_Antriebe/Bosch_Active_/_Performance_/_CX_Line/Kettenblätter.html

any sprocket will work tho it just wont lock on to the chain ring

 

[Barrio Barranco]

PRODUCT SPECS

Manufacturer: SRAM
Mfr Part #: 00.6218.007.001
UPC: 710845793615
Model: SRAM EX1 Bosch Direct Mount Chainring
Size: 16 tooth
Type: Bosch Direct Mount
Material: Steel
Defined Color: Black
Ring Position/TYPE: Chain Retaining Single Ring
Drivetrain Speeds: 10
Drivetrain Speeds: 11
Drivetrain Speeds: 8
Drivetrain Speeds: 9
Tooth Count: 16
Direct Mount Type: Bosch Direct Mount
Round or Oval: Round

So I'm assuming 12 speed is ok too?

 

[soundwave]

yeah it will be fine i dont use mine anymore as i got 18t and 20t normal sprockets and all gears work with both sprockets so any will do.

 

[soundwave]