Oxygen Emate City 2011 / Link for a new chain ring if possible

[georgehenry]

I wondered if anyone knows the correct style/BCD chain ring to order as a replacement for the standard 52 tooth one on my old Oxygen Emate City circa 2011. A link to one would be appreciared.



Also a link to a suitable replacement brake rotor. It attaches with six small bolts. I need one for the rear, which has warped but still works ok.




The road salt is reeking havoc!

 

[vfr400]

Brake rotors are interchangeable. you can use any deign you like as long as it has the same siameter (written on it) and the 6 holes for the screws. 100s on Ebay. I think it's 180mm, but check anyway.

Chainwheels are also fairly standard. The important thing is the diameter of the fixing bolt circle (BCD), which you should measure. It's probably 110mm or 130mm. Obviously you need 5 fixing holes not 4.

 

[Raboa]

Oxygen website

eBike | Revolutionize Your Ride with our Oxygen Electric Bikes

eBike | Experience the thrill of Oxygen Electric Bikes! Innovative design, unparalleled performance. Visit us to explore our range today.

www.oxygenbicycles.com

It looks like oxygen used a prowheel crankset, to buy one now with that ring it states it is 130 BCD.

Spec sheet, please check right model.

https://pedelectric.wordpress.com/bikes-the-shortlist/oxygen-emate-city/ou can these chainrings from AliExpress, eBay, various cycles shops.

52 tooth chainring 130bcd shimano - Google Search

www.google.com

According to the spec sheet above it is 160mm six bolt (not Centrelock)rotors.

160mm disk brake rotors - Google Search

www.google.com

You can buy various makes and quality, you might be ok with a Shimano one. Disk brakes have improved over the years and got cheaper so I would consider upgrading your current ones.

I would phone / email oxygen to double check. I hope this helps, oxygen should be able to confirm any details.

 

[Nealh]

Bolted rotors are a std 6 bolt fixing on most bieks/ebikes. The 5 bolt crank will likely be 110bcd but check with a tape.

 

[Raboa]

Understanding BCD

www.qbp.com

 

[georgehenry]

Thank you all for your kind replies. I used the "Understanding BCD" link from Raboa to measure the gap between two of the 5 bolts that attach my chain ring and confirm that it is 130BCD

I am about to look myself, but the Old Oxygen Emate City Road bike that I have two of has a single chain ring and if any of you found a suitable one on a website that you could add a link to I would again be grateful.

Thanks everybody for your help.

 

[Nealh]

5 bolt 130bcd chain ring is the search to use.

SJS cheap to quite dear.
130 BCD 5 Arm | Chainrings | Transmission | SJS Cycles

Or Ebay.
130 bcd chainring | eBay

Two for starters plenty others to look up.

 

[georgehenry]

Thanks Nealth.

The one you linked to is the right style and make as the one in situ.

I found this narrow wide one which is the correct BCD but a different style to the shimano with an inner ring where the bolt holes are rather than arms.

The narrow wide bit appeals.

Any reason why it would not work?

https://www.amazon.co.uk/gp/product/B07VNG2Y7X/ref=ppx_yo_dt_b_asin_title_o00_s00?ie=UTF8&psc=1

 

[Raboa]

The one you have shown looks like this one but cheaper, it would surprise me if both made in same factory but labeled differently.

Litepro 130bcd Full CNC Hollow Chainring Narrow-Wide Bicycle Chainwheel 50-58t | eBay

Find many great new & used options and get the best deals for Litepro 130bcd Full CNC Hollow Chainring Narrow-Wide Bicycle Chainwheel 50-58t at the best online prices at eBay! Free delivery for many products.

www.ebay.co.uk

 

[georgehenry]

Thanks Raboa, I found the cheaper one on ebay too and think you are right that they are the same.