is there any Hollowtech II compatible 130/74 BCD crank?
09-30-18, 07:37 AM
#1
Senior Member
Thread Starter
is there any Hollowtech II compatible 130/74 BCD crank?
Hello.
I'm a very rookie. quite honestly, ignorant, clueless.
1. could be there any Hollowtech II compatible 130/74 BCD crankset or crankarm?
2. How would you evaluate Hollowtech II? does Hollowtech II worthier than other square BB combinations, or other bicycle manufacturer's combinations?
(the story is that I want a triple crank ranges from 24T to 52T, or even 56T)
I'm a very rookie. quite honestly, ignorant, clueless.
1. could be there any Hollowtech II compatible 130/74 BCD crankset or crankarm?
2. How would you evaluate Hollowtech II? does Hollowtech II worthier than other square BB combinations, or other bicycle manufacturer's combinations?
(the story is that I want a triple crank ranges from 24T to 52T, or even 56T)
09-30-18, 07:48 AM
#2
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Location: Pittsburgh, PA
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Bikes: '96 Litespeed Catalyst, '05 Litespeed Firenze, '06 Litespeed Tuscany, '20 Surly Midnight Special, All are 3x10. It is hilly around here!
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The most recent HTII triple crank with separate 130/74 mm BCDs I know of is the Shimano 105 10-speed FC-5703. It's out of production but you may be able to find one NOS if you do a search. The 9-speed Tiagra FC-4603 also had 130/74 BCDs and may also be available. All of the later HTII Shimano triple cranks had 130/92 BCDs and the 92 was part of the middle chainring, not the crank arms themselves and was limited to a 30T smallest chainring.
I've had very good experiences with HTII bottom brackets. Mine have been smooth and durable and are very reasonably priced. I have used cup-and-cone square taper, cartridge square taper and Octalink (HTI) cartridges in the past so I have a pretty good basis for comparison with HTII.
I've had very good experiences with HTII bottom brackets. Mine have been smooth and durable and are very reasonably priced. I have used cup-and-cone square taper, cartridge square taper and Octalink (HTI) cartridges in the past so I have a pretty good basis for comparison with HTII.
10-01-18, 01:28 AM
#3
Senior Member
What are you trying to build, and why? Note that a htii road crankset will outright not work on a 73mm mtb bottom bracket, and your previous post was that you were planning on building up a 29er mtb frame.
Are you planning on using indexed shifters? They typically run poorly on significantly nonstandard chainring configurations. Chainrings with shift aids work much better when used as sets as intended.
If you can articulate why you need uncommon gearing, and what kind of bike you're trying to build we can probably help you
Are you planning on using indexed shifters? They typically run poorly on significantly nonstandard chainring configurations. Chainrings with shift aids work much better when used as sets as intended.
If you can articulate why you need uncommon gearing, and what kind of bike you're trying to build we can probably help you
10-01-18, 08:46 AM
#4
Senior Member
Thread Starter
luckily my MTB frame was with 68mm BSA and:
I’m kind of thinking a very weird trekking bicycle with higher gearing, or what one call it reinforced gravel bike with front suspension.
which universally works as road and MTB (or as a trekking bike at least).
despite too thick tyre and heavy as a road bike but with front suspension,
and as a MTB despite with a left road brifter and a drop bar.
the thing is that 2 bicycle for me a single person sounded too many to me, lol, because I’m just a guy who just only have had experience with BSOs. (Bicycle Shaped Object, some british guys brilliantly invented this term for cheap bikes, like below $300)
(the idea is actually sounds like almost impossible. even when I rethink of this, it’s a kind of stupid idea. haha.
(good bikers in here and there have warned me kindly that a big road chainring will hit chainstay too)
Anyway that’s why I asked for BCD 130/74 triple crankset so I can have option for extending from 24 to 52 even for newer bike in someday.
( I discovered below as a reference:
who were riding 52-38-24.
www.bacchettaforum.com/forum2/m/tm.aspx?m=97526&p=
)
perhaps I might be better to content with shimano‘s 48-36-26 option with 11-36t (or 32T, idk.) for trekking bikes.
l
10-01-18, 12:44 PM
#5
Senior Member
thank you for your concern.
luckily my MTB frame was with 68mm BSA and:
I’m kind of thinking a very weird trekking bicycle with higher gearing, or what one call it reinforced gravel bike with front suspension.
which universally works as road and MTB (or as a trekking bike at least).
despite too thick tyre and heavy as a road bike but with front suspension,
and as a MTB despite with a left road brifter and a drop bar.
the thing is that 2 bicycle for me a single person sounded too many to me, lol, because I’m just a guy who just only have had experience with BSOs. (Bicycle Shaped Object, some british guys brilliantly invented this term for cheap bikes, like below $300)
(the idea is actually sounds like almost impossible. even when I rethink of this, it’s a kind of stupid idea. haha.
(good bikers in here and there have warned me kindly that a big road chainring will hit chainstay too)
Anyway that’s why I asked for BCD 130/74 triple crankset so I can have option for extending from 24 to 52 even for newer bike in someday.
( I discovered below as a reference:
who were riding 52-38-24.
Large Capacity Front Deraileurs
)
perhaps I might be better to content with shimano‘s 48-36-26 option with 11-36t (or 32T, idk.) for trekking bikes.
l
If you're not drafting other riders, and have the higher rolling resitance of mtb tires it is unlikely you will need a gear higher than about 48x11 much if at all if you can comfortably pedal at >80rpm. Most bikes like yours--sounds like basically a 29er hardtail set up with drop bars--are using mtb double or 1x cranksets.
I think you are probably misguided about your need for road high gearing.
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10-01-18, 04:50 PM
#6
Senior Member
Are you sure you need a 56T chainring on a 29er gravel bike?
Even if you do, if you've got a 68mm BSA BB you could always just go square taper.
Even if you do, if you've got a 68mm BSA BB you could always just go square taper.
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