Hollowtech II replacement for Deore FD-M751 crankset?
10-26-23, 11:16 AM
#1
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Hollowtech II replacement for Deore FD-M751 crankset?
Hi, I'm new to the bike building game and am not sure if it's possible or advisable, but is there a suitable Hollowtech II replacement for the FD-M751 crank?
The rest of the bike's components are all M750, and it's a 3x9.
I'm on a really tight budget, so will be trying to source cheap parts on eBay.
-thanks!
The rest of the bike's components are all M750, and it's a 3x9.
I'm on a really tight budget, so will be trying to source cheap parts on eBay.
-thanks!
10-26-23, 11:52 AM
#2
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search: Deore 9 sp. hollowtech II crankset.
the 10 sp. versions will also work fine.
i just saw a 9 sp. XT on the 'Bay for $70.. the middle ring needs replaced
you'll need a HT II Bottom bracket too.. get a new one of those in a 68/73mm width... it will come with instructions and spacers. $20 or so, shipped.
the 10 sp. versions will also work fine.
i just saw a 9 sp. XT on the 'Bay for $70.. the middle ring needs replaced
you'll need a HT II Bottom bracket too.. get a new one of those in a 68/73mm width... it will come with instructions and spacers. $20 or so, shipped.
Last edited by maddog34; 10-26-23 at 12:03 PM.
10-26-23, 12:28 PM
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Your BB is a Octalink II? You could get a brand new Alivio crank for $52.00. But the rings are probably a larger tooth count 26/36/48 vs what I'm imagining is 22/32/44. So it might leave you without the low gear ratios you might currently use. Not certain if the size will be a factor for your bike frame.
https://www.treefortbikes.com/Shiman...6-48t-Octalink
BCD/PCD is the same for both I think. So possibly you can switch the rings if the old aren't worn out and the interface on the spider matches.
If you are willing to pony up $18.00 for a new BB, you could get a two piece Deore with the same 22/32/44 tooth count on the rings. However then you'll be paying over $100 for a new Deore crankset.
https://www.treefortbikes.com/Shiman...0-40t-Crankset
I didn't look for the best price out there, but this is one place that often is one of the sites that will be in the ballpark of the lowest prices that are trustworthy sites.
https://www.treefortbikes.com/Shiman...6-48t-Octalink
BCD/PCD is the same for both I think. So possibly you can switch the rings if the old aren't worn out and the interface on the spider matches.
If you are willing to pony up $18.00 for a new BB, you could get a two piece Deore with the same 22/32/44 tooth count on the rings. However then you'll be paying over $100 for a new Deore crankset.
https://www.treefortbikes.com/Shiman...0-40t-Crankset
I didn't look for the best price out there, but this is one place that often is one of the sites that will be in the ballpark of the lowest prices that are trustworthy sites.
10-26-23, 12:43 PM
#4
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Your BB is a Octalink II? You could get a brand new Alivio crank for $52.00. But the rings are probably a larger tooth count 26/36/48 vs what I'm imagining is 22/32/44. So it might leave you without the low gear ratios you might currently use. Not certain if the size will be a factor for your bike frame.
I plan to install this crankset on my bike over the winter.
10-26-23, 03:45 PM
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Your BB is a Octalink II? You could get a brand new Alivio crank for $52.00. But the rings are probably a larger tooth count 26/36/48 vs what I'm imagining is 22/32/44. So it might leave you without the low gear ratios you might currently use. Not certain if the size will be a factor for your bike frame.
https://www.treefortbikes.com/Shiman...6-48t-Octalink
BCD/PCD is the same for both I think. So possibly you can switch the rings if the old aren't worn out and the interface on the spider matches.
If you are willing to pony up $18.00 for a new BB, you could get a two piece Deore with the same 22/32/44 tooth count on the rings. However then you'll be paying over $100 for a new Deore crankset.
https://www.treefortbikes.com/Shiman...0-40t-Crankset
I didn't look for the best price out there, but this is one place that often is one of the sites that will be in the ballpark of the lowest prices that are trustworthy sites.
https://www.treefortbikes.com/Shiman...6-48t-Octalink
BCD/PCD is the same for both I think. So possibly you can switch the rings if the old aren't worn out and the interface on the spider matches.
If you are willing to pony up $18.00 for a new BB, you could get a two piece Deore with the same 22/32/44 tooth count on the rings. However then you'll be paying over $100 for a new Deore crankset.
https://www.treefortbikes.com/Shiman...0-40t-Crankset
I didn't look for the best price out there, but this is one place that often is one of the sites that will be in the ballpark of the lowest prices that are trustworthy sites.
which came with 44-32-22 rings, typically.
"Showtime".. Johnny O'Mara? Nice guy! met him more than once at Washougal MX.
Last edited by maddog34; 10-26-23 at 03:53 PM.
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10-26-23, 04:16 PM
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I generally think the OP can figure out what suggestions to eliminate and what to consider. I don't think they need other members trying to decide what replies are relevant for them.
10-26-23, 06:45 PM
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10-26-23, 06:49 PM
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Related question:
Is Tree fort bikes reputable retailer ?
Is Tree fort bikes reputable retailer ?
10-26-23, 07:17 PM
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Yes. I've made a few purchases from them and they have always been excellent with quick delivery and response to questions. Even had a Shimano cassette delivered with 2 of the same size cogs which was Shimano's error so Tree Fort exchanged it no problem and gave me another one at no cost which I didn't even ask for or raise a stink about. Great service.
10-26-23, 08:26 PM
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So? They also said they are on a really tight budget. So is it wrong to offer something that isn't Hollowtech II.
I generally think the OP can figure out what suggestions to eliminate and what to consider. I don't think they need other members trying to decide what replies are relevant for them.
I generally think the OP can figure out what suggestions to eliminate and what to consider. I don't think they need other members trying to decide what replies are relevant for them.
then recommended a "bargain" with odd gearing that most try to avoid.
those 40-30-22s are all over the place, for discount prices, for a reason.
Last edited by maddog34; 10-26-23 at 08:31 PM.
10-26-23, 08:58 PM
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IIRC, he once raced a "first time" Triathlon without actually training specifically FOR a triathlon, and placed in the top ten, or possibly podium-ed... people just don't realize how strenuous Motocross is, or the amount of conditioning it takes to compete on a Pro scale.
personally, i rode Enduro/ISDE/Cross country events... more riding miles, but not quite as intense. My bicycling helped, but it took far more too... running at altitude, high rep. workouts at a gym, fast twitch, building trails in the mountains, and lots of the right food helped.
just an old guy with a limp now... sigh.
Pro MX racers are typically in better overall condition than any other sport... by a margin.... i think Rugby pros were next in line.
I'm thinking MMA fighters would be in the top three now... it wasn't around back then....
personally, i rode Enduro/ISDE/Cross country events... more riding miles, but not quite as intense. My bicycling helped, but it took far more too... running at altitude, high rep. workouts at a gym, fast twitch, building trails in the mountains, and lots of the right food helped.
just an old guy with a limp now... sigh.
Pro MX racers are typically in better overall condition than any other sport... by a margin.... i think Rugby pros were next in line.
I'm thinking MMA fighters would be in the top three now... it wasn't around back then....
Last edited by maddog34; 10-26-23 at 09:02 PM.
