Hope 34t chain ring……

[Chrisjones6699]

Has anyone fitted one of these to their Rise yet?

 

[b33k34]

Has anyone fitted one of these to their Rise yet?

Can I ask why you want to fit a larger chainring?

On a related note - any recommended options for replacement chainrings given the limited availability of the e*thirteen ring.

I've been keeping a close eye on my chain length, and both my chaintools tell me my chain is not overworn but yesterday it was skipping on the middle rings of the cassette which makes me suspect (maybe due to the narrow internal width of the shimano chain) my measurements aren't good and maybe I've worn out both chain and cassette (which makes me fear for the chainring too)

 

[steve_sordy]

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I've been keeping a close eye on my chain length, and both my chaintools tell me my chain is not overworn but yesterday it was skipping on the middle rings of the cassette which makes me suspect (maybe due to the narrow internal width of the shimano chain) my measurements aren't good and maybe I've worn out both chain and cassette (which makes me fear for the chainring too)

To be certain, remove the chain and lay it on a flat surface. I use the kitchen worktop with newspaper protection. Flat side up, stretch out the chain and measure 100 links. On a new chain, 100 links will measure 50" exactly. Use a metal tape measure, but don't use the hook at the end. Instead line up the centre of a pin with a big mark (I use the 10" mark to make the sums easier, just don't forget to measure to the 60" mark on your tape), then see where the 101st pin centre comes. If it is 50.5" then your chain is worn 1% ie (50.5/50)-1, all times 100. A 1% length extension is the level at which most websites say that the chain is basically scrap. But if your gears are shifting fine and without skipping, you have a choice. You can run your transmission into the ground and then replace it all. Or you could replace the chain with new and hope you caught it in time. If your new chain skips then you need a new cassette and maybe a new chainring. So, while you find one, replace your old chain because the new chain will wear rapidly while trying to deal with a worn cassette and maybe a worn chainring too!

If your chain measures 50 - 3/16" then it is 50.1875/50 = 1.00375, which after minus 1 and times 100 you get 0.375%
0.375% is perfectly acceptable. By careful measurement, you can easily measure to 1/32" accuracy, which is 0.06% length extension. That is more than accurate enough!

The advantage of using the above method is that it averages out any variation in wear across the chain. It is also more accurate as you are looking for very small changes. Those small % changes are very small measurements indeed on a typical chain measuring tool. Chain gauges are small, are subject to manufacturing accuracy, and they will wear over time. Measuring over 100 links in one go is probably the most accurate that ordinary mortals can get.

By the way the chain has not "stretched", although this is the common usage term. It has worn and has got longer as a result.

 

[cookie70]

Has anyone fitted one of these to their Rise yet?

do they even make one that is compatible?

I'd love to go 34 or 36t but not at the expense of loosing the guide.

 

[Chrisjones6699]

do they even make one that is compatible?

I'd love to go 34 or 36t but not at the expense of loosing the guide.

They advertise one for shimano but that doesn’t really mean much as its a bit of a mine field with aftermarket parts. I had one for my Bosch bike last year and loved it.

I’ve removed my guide after reading quite a bit on here and haven’t had any issues so far. I might have to get the Hope chain ring to find out for myself.

 

[soundwave]

do they even make one that is compatible?

I'd love to go 34 or 36t but not at the expense of loosing the guide.

I have removed the chain guide a looong time ago and zero problems. Also less chain rattle.