To improve your shopping experience today and in the future, this site uses cookies.
I Accept Cookies
“After over a year of testing we are pleased to release our Oval Chain Ring” Does a mechanical advantage of increased gearing sound Interesting? If so read on.

“After over a year of testing we are pleased to release our Oval Chain Ring” Does a mechanical advantage of increased gearing sound Interesting? If so read on.

Burgtec

Burgtec Oval 30T Cinch Thick Thin RF Chainring - Black

£44.69  £49.99  11% off
Click & Collect for Free
Earn 
 in Customer Rewards when you buy this item today
Pre-Order

With Pre-Order, you can purchase the latest items added to our store in advance of them arriving with us.

Your Pre-Order is prioritised (at no additional charge); meaning that as soon as the product arrives with us, we can wrap it straight back up; ready for collection via Click & Collect or dispatch to you — it often never even hits the stock room shelves!

Pre-Launch

With Pre-Launch, the date when we expect to receive the product ourselves is still a little too hazy to be confident in accepting Pre-Orders.

So, instead, you can submit your email address against the item you are interested in and we will email you as soon as stock arrives on the system.

Estimated Delivery & Collection Dates

Estimated Delivery & Collection Dates are given on Pre-Order and Pre-Launch products. They are for indication purposes only and can change at any time without notice.

The dates we provide are based on indications given by our suppliers. Whenever we get updated information from our suppliers we will endeavour to update the Estimated Delivery & Collection Dates provided on product pages.

We estimate this will be ready for dispatch to you or collection via Click & Collect on the Undetermined
Earn Rewards
You will earn of rewards points to spend on your next purchase from us, anything online and instore when you purchase this item.

Hassle-free returns

It is important to everyone at Oneplanet Adventure that you are over the moon with your new purchase. However, if for any reason you aren’t, we do offer a 365-day returns policy. Items purchased from the Oneplanet Adventure website, with the exception of custom-built bikes, wheels or ex-demo / ex-rental bikes can be returned, provided the item has not been used or fitted and is in its original packaging with a valid proof of purchase.

The quickest way to return an item to us is to drop it into the store with the original receipts and packaging that came with the order here at Oneplanet Adventure, Coed Llandegla Forest, Ruthin Rd, Llandegla, LL11 3AA. But if you wish to return your purchase by post simply complete our returns form, which we send out with every order, and provide us with all the details of why you wish to return your purchase with again the original receipt or invoice and all the packaging that came with the order. Once you have completed the Returns Form send your package back to us at Oneplanet Adventure, Coed Llandegla Forest, Ruthin Rd, Llandegla, LL11 3AA.

If you've lost your returns form or wish to return an item under warranty,
CLICK HERE to take you to where you can download the return form.

It is your responsibility to ensure that the item is returned to us in a safe and secure manner, we suggest that you use a recorded postal/courier service. Please ensure that the service you use covers the value of the goods in the parcel. Return shipping costs are non-refundable unless an item is found to be faulty, in which case any postage costs will be reimbursed following our assessment of the product. To ensure your return arrives safely at the centre, we recommend using Royal Mail as they are aware of what to do with our returns from customers.

It can take 5 days for your parcel to reach us depending on the postal service that is used. Once we receive your parcel we will aim to inspect and process your return within 24 hours. Refunds can take up to 5 days to appear in your account. Credit and debit card refunds must be made to the card used for the original purchase. You will receive an email update upon the completion for your return.

If you wish to exchange an item for any reason the quickest and simplest way to do this is to place a new order for the item you want and return the other item for a refund.

Cyclescheme / V12 Finance

If you have made a mail order purchase using our online finance option or through Cyclescheme and would like to return your purchase, please contact us on 01978 751656 or email us, hello@oneplanetadventure.com, before returning your item.

Faulty items and warranty claims

If you believe an item you have received from us is faulty please contact us by email or phone before returning the item.

All products purchased from Oneplanet Adventure come with a full warranty which covers manufacturing faults and defects in workmanship. If you feel that your purchase has developed a fault, please call or email us. If you email, it is really helpful to include photographs of your product and please also include your original order number.

Burgtec Oval 30T Cinch Thick Thin RF Chainring - Black Information

Brand : Burgtec

Code : 8481

“After over a year of testing we are pleased to release our Oval Chain Ring”

Does a mechanical advantage of increased gearing sound Interesting? If so read on.

Through research and testing of many different prototypes with varying amounts of Ovality we found 115% (from the top centre) to be the optimum.

This shrank the dead spot suitably and gave the same flawless chain retention and silence as our round rings.  The shortening of the dead spot on the top and bottom of the power curve allows you to get back into the power phase of your crank rotation sooner.

The benefit of this is twofold; increased gearing on the downward stroke and faster crank speed to get the crank propelled back around into the power phase continually. This is a significant gain because virtually all studies into pedalling performance suggest that a minimum 80% of your power  comes from the down ward motion. Mainly because much larger muscle groups are used for this motion. The physics sorcery essentially adds extra power in the down wards stroke for no extra effort by reducing the dead spot and adds a bigger gear for the now larger power phase in the downward stroke. Win win.

All of our Chain Rings are + / -  2 Teeth so;

30T Has a combination of 32T Increased Power Phase and 28T Dead Spot

32T Has a combination of 34T  Increased Power Phase and 30T Dead Spot

We would recommend sticking to the current sized round ring that you are currently using when selecting your Oval size.

  • Thick Thin Tooth profile with Mud Bleed
  • 10 11 and 12 Speed Compatible
  • 115 Degree’s of Ovality
  • Fully CNC Machined from 7075 Aluminium
Sizing Information
Professional Opinion

Also in the range

Home Mountain Biking Components Burgtec Gears & Drivetrain

Signup to our Newsletter

Get Exclusive offers and news, straight to your inbox.

Keep in touch

Follow our social media and stay in the loop