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Burgtec

Burgtec Shimano Oval Chainring

£49.99 GBP
Tax included

Colour: Black
Size

Stock Status

IN STOCK - This means we physically have the product on hand ready to dispatch immediatly.

AVAILABLE FROM SUPPLIER (ADD TO CART) - This means we do not currently have the product in our shop. However once you place your order, we will then order the item from our supplier and it will arrive with us a day or two later. Then we post it to you. (Please don't expect these items to arrive next day!)

SOLD OUT - This item is currently unavailable, though please click on the 'Notify Me' button to get an email notification when it's available. Alternatively contact us, as we may be able to source it for you.

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Description

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 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 downward motion. Mainly because much larger muscle groups are used for this motion. The physics sorcery adds extra power in the downwards 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
  • 10, 11 and 12 Speed Compatible
  • 115 Degrees of Ovality
  • Fully CNC Machined from 7075 Aluminium

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Burgtec

Burgtec Shimano Oval Chainring

£49.99 GBP

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 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 downward motion. Mainly because much larger muscle groups are used for this motion. The physics sorcery adds extra power in the downwards 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.

Colour

Size

  • 30T
  • 32T
View product