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Old 12-23-05, 02:01 PM   #1
mooncake
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FSA Compact Gossamer MEGAEXO Cranks vs. Ultegra 10 spd.

How is the quality of the construction, may it be the chainrings or the crankset in general compared to a Shimano Ultegra?
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Old 12-24-05, 11:33 PM   #2
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Ultegra all the way...
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Old 12-25-05, 12:40 AM   #3
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The Ultegra is going to be a nicer fit/finish, especially noticeable in the shift quality due to the nicer chainrings.
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Old 12-25-05, 09:25 AM   #4
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The FSA is a "compact" crank (110 mm BCD) and the Ultegra is a "standard road" crank (130 mm BCD) so they aren't directly comparable. Shimano will have a compact crank available soon. For my money, I'd stick with Shimano and wait for their compact if that's what you want.
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Old 12-25-05, 09:32 AM   #5
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Originally Posted by seely
The Ultegra is going to be a nicer fit/finish, especially noticeable in the shift quality due to the nicer chainrings.
Well if they were equal,both compact or both not,your not going to notice any difference except in looks.You'll notice more in different FD then the .1% difference in chainrings. They are both good,the compact carbon or the reg shinny Ultegra.
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Old 12-25-05, 12:40 PM   #6
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Some people have reported problems with keeping the left side crank arm tight with FSA's MegaExo style cranks. They use a rubber crush washers and a large bolt to hold the arm on, similar to a regular crank. I think the rubber starts to relax with usage which causes the tension on the bolt to drop and loosen. From what I understand, FSA has messed around with these different crush washers to find the right formula - with suspect results. Shimano's LH crank arm holds on with two pinch bolts which will not loosen with usage - a more robust design in my opinion.

Hope this helps.
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Old 12-25-05, 01:19 PM   #7
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Ultegra = Stiffer + Lighter (980g vs. 777g) = Faster
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Old 12-25-05, 07:20 PM   #8
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Ultegra = Stiffer + Lighter (980g vs. 777g) = Faster
LMAO I'm thinking 8oz wont make to much difference in speed,do you? You can pee more before you ride and do that.
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Old 12-25-05, 07:25 PM   #9
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LMAO I'm thinking 8oz wont make to much difference in speed,do you? You can pee more before you ride and do that.
Half a pound on a road bike is a lot
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Old 12-25-05, 07:34 PM   #10
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Quote:
Originally Posted by Primo Tiki
Ultegra = Stiffer + Lighter (980g vs. 777g) = Faster

A 172.5mm 6600 Ultegra crank is 840 grams with the bottom bracket (weighed by myself on a triple beam balance scale).

According to Weight Weenies a 175mm Gossamer Compact MegaExo crank with bottom bracket weighs 909 grams. Add 10 extra grams for a regular crank vs. compact and the total is approximately 920 grams.

That makes the total difference approximately 80 grams (or less than 3 oz.).

Also, usually heavier means stiffer for the most part if that's important to you.
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Last edited by Nessism; 12-26-05 at 09:36 AM.
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Old 12-26-05, 09:17 AM   #11
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I'm pretty sure the FSA is less inc the BB,maybe around 750g.TiKi, if you dont race and your just an everyday rider,you wouldnt notice 8oz either way. I'd go with which one looks best on my bike.
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