Chainset replacement
TheRevOlutionary
Posts: 1,176
It's a drawn out process, but finally looking at replacing the chainset on my Felt.
Current - Truvativ Isoflow Square taper 22/32/44
Potential replacement - Truvativ Isoflow Trekking Square taper 28/38/48
Questions;
Same BB for both?
Adjust front mech up the tube slightly to allow for extra ring size?
Extra 2/3 chain links on current length too?
Anything else I need to know, or other square taper chainset options?
Current - Truvativ Isoflow Square taper 22/32/44
Potential replacement - Truvativ Isoflow Trekking Square taper 28/38/48
Questions;
Same BB for both?
Adjust front mech up the tube slightly to allow for extra ring size?
Extra 2/3 chain links on current length too?
Anything else I need to know, or other square taper chainset options?
0
Comments
-
should be fine.
why dont you just fit new rings? or is cheaper to get the whole crankset?
mech may struggle with 48 if it is not designed for 48."Do not follow where the path may lead, Go instead where there is no path, and Leave a Trail."
Parktools :?:SheldonBrown0 -
Chainset is about £40 and one of the crank arms on my current set is fairly mullered, so might as well change it!
Current mech is a Deore. Any idea if compatible?0 -
TheRevOlutionary wrote:Chainset is about £40 and one of the crank arms on my current set is fairly mullered, so might as well change it!
Current mech is a Deore. Any idea if compatible?
You might as well get a ht2 deore chainset. These can be had for around £50 and will be much better than the truvativ-stiffer, includes a longer lasting bb and possibly lighter too.
http://www.bike-discount.de/shop/a14423/deore-crankset-fc-m590-44-32-22-175mm-black.html?lg=en0 -
What he said.0
-
Why would you want such big rings?I don't do smileys.
There is no secret ingredient - Kung Fu Panda
London Calling on Facebook
Parktools0 -
I do mostly road miles on my commute, and quite often 'top-out', so hoping for a bit more speed, and rarely use a lower gear too, so not fussed about losing the lower ratios. It would just add to the options.cooldad wrote:Why would you want such big rings?
Quite like the sealed square taper BB's and they don't mean that I'd need to reface the BB to fit the HT2 Deore set. Having said that I do really like the Deore...do you reckon the BB would last longer with the external bearings?leaflite wrote:You might as well get a ht2 deore chainset. These can be had for around £50 and will be much better than the truvativ-stiffer, includes a longer lasting bb and possibly lighter too.
http://www.bike-discount.de/shop/a14423/deore-crankset-fc-m590-44-32-22-175mm-black.html?lg=en0 -
nope.TheRevOlutionary wrote:do you reckon the BB would last longer with the external bearings?"Do not follow where the path may lead, Go instead where there is no path, and Leave a Trail."
Parktools :?:SheldonBrown0 -
Thanks Nic, that was my thinking, so I get to keep the sealed BB and just upgrade the chainset.
Would you recommend changing the chain at the same time?0 -
it depends on how worn it is.
but no as it will then mean a cassette is most likely to be needed."Do not follow where the path may lead, Go instead where there is no path, and Leave a Trail."
Parktools :?:SheldonBrown0 -
Changed the cassette and chain about 200miles ago so shouldn't have stretched too much since then, but cycled all weathers since with the 'odd' lube :oops:nicklouse wrote:it depends on how worn it is.
but no as it will then mean a cassette is most likely to be needed.0 -
most likey better than a chain that is cleaned and lubed religiously then."Do not follow where the path may lead, Go instead where there is no path, and Leave a Trail."
Parktools :?:SheldonBrown0 -
Just make sure you don't have clearance issues with bigger ring on the chainstayI don't do smileys.
There is no secret ingredient - Kung Fu Panda
London Calling on Facebook
Parktools0 -
It's a Deore front mech. Any idea if they are suitable and provide the clearance required?
I'm hoping that the fact that Deore do a 48tooth chainset, means that the Deore mech will be sufficient!0 -
read the specs on Shimanos webby for the part number on the Mech. as the answer so far is Yes and No."Do not follow where the path may lead, Go instead where there is no path, and Leave a Trail."
Parktools :?:SheldonBrown0 -
-
simples. "Do not follow where the path may lead, Go instead where there is no path, and Leave a Trail."
Parktools :?:SheldonBrown0 -
-
TheRevOlutionary wrote:Quite like the sealed square taper BB's and they don't mean that I'd need to reface the BB to fit the HT2 Deore set. Having said that I do really like the Deore...do you reckon the BB would last longer with the external bearings?
Sorry, I thought you were talking about a powerspline BB. Those don't last 5 minutes!0 -
0
-
Neal_ wrote:
plus a new BB as that needs a 123mm axle."Do not follow where the path may lead, Go instead where there is no path, and Leave a Trail."
Parktools :?:SheldonBrown0 -
nicklouse wrote:Neal_ wrote:
plus a new BB as that needs a 123mm axle.
You know your stuff...still doable with a new BB but a couple of quid more than the Truvitiv chainset but UN55 BB's will last forever.
http://www.parker-international.co.uk/1 ... acket.html0 -
Good shout, thanks a lotNeal_ wrote:
0 -
...also noticed the Alivio suggests only 7/8 speed? Mine is 9, so will it not work?0
-
Don't worry I found the tech sheets that show it!TheRevOlutionary wrote:If I'm looking for new chainset's, how do I know what axle it needs?0 -
I feel like i'm talking to myself here!
How about this crankset;
http://www.bike-discount.de/shop/a34687 ... id=8008404
Am I correct in thinking a UN54 68x122.5 BB will be needed for this too? My current BB is 68x113.0 -
Any 123mm bb."Do not follow where the path may lead, Go instead where there is no path, and Leave a Trail."
Parktools :?:SheldonBrown0 -
Thanks again guys, crankset ordered from the bike-discount website and a BB from Woolly Hat has hopefully sorted my issue! Also very happy to find a little tool kit that will be useful, and looks smart too!
http://www.bike-discount.de/shop/k1262/ ... ieces.html0 -
TheRevOlutionary wrote:Thanks again guys, crankset ordered from the bike-discount website and a BB from Woolly Hat has hopefully sorted my issue! Also very happy to find a little tool kit that will be useful, and looks smart too!
http://www.bike-discount.de/shop/k1262/ ... ieces.html
that is actually well thought out. quality? let us know."Do not follow where the path may lead, Go instead where there is no path, and Leave a Trail."
Parktools :?:SheldonBrown0 -
Will do...not sure how long it will take to some from Germany though?nicklouse wrote:TheRevOlutionary wrote:Thanks again guys, crankset ordered from the bike-discount website and a BB from Woolly Hat has hopefully sorted my issue! Also very happy to find a little tool kit that will be useful, and looks smart too!
http://www.bike-discount.de/shop/k1262/ ... ieces.html
that is actually well thought out. quality? let us know.0
