The differece betwen these two: help?
03-08-15, 07:35 PM
#1
contiuniously variable
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The differece betwen these two: help?
Hi, just need some help figuring out the difference between these two brake dyno hubs.
Sturmey Archer | X-FDD
Sturmey Archer | XL-FDD
The size specs, i cant visualize them, and the form factor, why do they look different?
- Andy
Sturmey Archer | X-FDD
Sturmey Archer | XL-FDD
The size specs, i cant visualize them, and the form factor, why do they look different?
- Andy
03-08-15, 07:54 PM
#2
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One braking surface is 70 mm wide and the other one is 90 mm. Therefore the wider should provide better stopping power due to larger contact area during braking.
Check the xl-fdd spec PDF it lists the specs side by side.
Check the xl-fdd spec PDF it lists the specs side by side.
03-08-15, 07:54 PM
#3
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The X-FDD has a 70mm drum brake, the XL-FDD has a 90mm drum brake. I have both sizes, built up in wheels, if you need a side-by-side pix let me know.
03-08-15, 08:01 PM
#4
contiuniously variable
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03-09-15, 02:46 AM
#6
contiuniously variable
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So basically the bigger one has more stopping power?
- Andy
- Andy
03-09-15, 03:28 PM
#8
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I'd say the smaller one probably won't stop more slowly but will fade from heat sooner if you have a heavy load on it. Get the bigger one if you're carrying a lot of stuff or go down gigantic hills.
The weight difference is less than 5 oz, but I wouldn't want to carry that weight around if it were not necessary.
The weight difference is less than 5 oz, but I wouldn't want to carry that weight around if it were not necessary.
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Tom Reingold, tom@noglider.com
New York City and High Falls, NY
Blogs: The Experienced Cyclist; noglider's ride blog
“When man invented the bicycle he reached the peak of his attainments.” — Elizabeth West, US author
Please email me rather than PM'ing me. Thanks.
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