Description

“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.


Burgtec Oval Thick Thin Chainring

“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... Read more

£39.99

Select Colour
  • Burgtec Black Burgtec Black
  • Burgtec Bullion Gold Burgtec Bullion Gold
  • Deep Blue Deep Blue
  • Iron Bro Orange Iron Bro Orange
  • Kash Bronze Kash Bronze
  • Purple Rain Purple Rain
  • Race Red Race Red
  • Rhodium Silver Rhodium Silver
  • Toxic Barbie Pink Toxic Barbie Pink
Size Please select
  • 30T
  • 32T
Option Please select
  • 104mm
  • 96/64mm
  • RF Cinch
  • GXP 6mm
  • GXP Boost 3mm

Description

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Delivery Information

We have a range of delivery options on orders. Most importantly, if your order is over £40 then delivery is free!

All Biketart orders are fully trackable. You will get a tracking number by email when your order is shipped.



Delivery Services

Standard Tracked: All orders over £40 are eligible for free standard tracked delivery. For orders under £40 there is a £2.99 charge. Orders sent using standard tracked are usually delivered in 2-3 days.

Premium Tracked: For £3.99 your order is sent by premium tracked delivery which gives a 1-2 day (including Saturdays) delivery timescale. This service is provided by Royal Mail who will usually deliver on Saturdays. Orders must be placed by 4pm

Next Day Courier: If you require next-working-day delivery then this is provided by DPD and is £6.99. Orders must be placed by 3.30pm in order to be processed before our daily DPD collection.

Saturday Delivery: You can select Saturday delivery options from DPD at the checkout.

Bike Delivery: Bikes are always delivered by courier. After placing a bike order your bike is fully assembled and tested before being carefully boxed for shipping. Because of this build process it is not always possible to offer next-day delivery on a bike. Please do get in touch if you want to know a specific despatch day on any bike on our website. Call us on 01227 832582 or email support@biketart.com.



Returns Info

We offer a 30 day return period on our items. We ask that items are returned in their original packaging and in re-sellable condition. We do not pay returns postage.unless we have made an error with your order.

 

We cannot accept the return if the item is not correctly packaged and is damaged in transit during the return trip back to us.

 

    Please do not stick any tape or labels to the products branded outer packaging.

     

      If you require an exchange it is recommended that you re-order the correct size/item and return the item you do not wish to keep to us for a refund.