side by side comparison compact/triple
08-09-09, 10:01 PM
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side by side comparison compact/triple
Anyone know of a link on the internet that shows a side by side comparison of a compact and a triple crankset? I'm curious as to which combinations are equivalent and which gears one loses completely when going with a compact. I realize that there are different types of cassettes as well as cranksets.. I currently run a 50/39/30 with a 12/27 in the back. Most of what I have been testing lately are 50/34s with similar cassettes..
08-09-09, 10:05 PM
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https://www.sheldonbrown.com/gears/
I just took my wife off a 52-42-30 with 12x25 cassette to a 50-34 compact with 13-29 cassette and she loves it. None of the BS dealing with a triple and all the gearing overlaps, and she gets the same low gear. Of course she also went from Tiagra to Campagnolo Centaur, and loves that too.
I just took my wife off a 52-42-30 with 12x25 cassette to a 50-34 compact with 13-29 cassette and she loves it. None of the BS dealing with a triple and all the gearing overlaps, and she gets the same low gear. Of course she also went from Tiagra to Campagnolo Centaur, and loves that too.
Last edited by teterider; 08-09-09 at 10:11 PM.
08-09-09, 10:09 PM
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If you know the specs for the chain rings/cassettes you can DIY at https://www.sheldonbrown.com/gears/
08-09-09, 10:50 PM
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Anyone know of a link on the internet that shows a side by side comparison of a compact and a triple crankset? I'm curious as to which combinations are equivalent and which gears one loses completely when going with a compact. I realize that there are different types of cassettes as well as cranksets.. I currently run a 50/39/30 with a 12/27 in the back. Most of what I have been testing lately are 50/34s with similar cassettes..
30x27 - this is the one you loose
30x24 ~ 34x27
30x21 ~ 34x24 ~ 39x27
30x19 ~ 34x21 ~ 39x24
I got this from the usual www.sheldonbrown.com/gears, and can vouch that this translated to real world climbs.
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08-10-09, 07:20 AM
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Use the equivalent gear formula to compare. For example: 27/30 x 34 = 30.6. This tells you that a 30/27 low gear on a triple is closest to a 34/31.
24/30 x 34 = 27.2
21/30 x 34 = 23.8
If don't want to lose top gearing, you need a cassette that starts with an 11 instead of a 12.
24/30 x 34 = 27.2
21/30 x 34 = 23.8
If don't want to lose top gearing, you need a cassette that starts with an 11 instead of a 12.
08-10-09, 07:54 AM
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https://www.panix.com/~jbarrm/cycal/cycal.30f.html
plug in ALL the cogs from both triple, compact and cassette
for a road triple, that is most likely 30-39-53, 30-39-50 or 30-42-52
for compacts it's 34-50, or 36-50
it will give you all gear combinations possible from lowest to highest.
plug in ALL the cogs from both triple, compact and cassette
for a road triple, that is most likely 30-39-53, 30-39-50 or 30-42-52
for compacts it's 34-50, or 36-50
it will give you all gear combinations possible from lowest to highest.
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Food for thought: if you aren't dead by 2050, you and your entire family will be within a few years from starvation. Now that is a cruel gift to leave for your offspring. ;)
https://sanfrancisco.ibtimes.com/arti...ger-photos.htm
08-10-09, 03:53 PM
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seems to me..an 11-28 cassette would minimize the loss of the 30/27 gear even more...34/27 would be 30.85 gear inches and 34/28 would be 29.75
