points of engagement ultegra hub?
02-01-17, 04:20 PM
#2
The Infractionator
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Please, try to make some sense when you post a question.
Please, try to make some sense when you post a question.
02-01-17, 04:26 PM
#3
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20.
Hands On Bike: Merida Scultura 5000 - Ultegra 6800 11 Speed Wheelset
The question makes perfect sense, he's asking how many pawls on the freehub. Pretty common terminology.
Hands On Bike: Merida Scultura 5000 - Ultegra 6800 11 Speed Wheelset
The question makes perfect sense, he's asking how many pawls on the freehub. Pretty common terminology.
02-01-17, 04:42 PM
#4
Calamari Marionette Ph.D
02-01-17, 05:14 PM
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Question made no sense to me either, but on reading the Merida review: points of engagement refers to the gear tooth # inside
the hub on which the pawl(s) engage or slip over depending on direction of rotation of the chain. Most hubs have either
two or three pawls and the gear 16 to 45 teeth, per the article. Might explain why some hubs are really noisy coasting.
Learned something.
the hub on which the pawl(s) engage or slip over depending on direction of rotation of the chain. Most hubs have either
two or three pawls and the gear 16 to 45 teeth, per the article. Might explain why some hubs are really noisy coasting.
Learned something.
02-01-17, 08:29 PM
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20.
Hands On Bike: Merida Scultura 5000 - Ultegra 6800 11 Speed Wheelset
The question makes perfect sense, he's asking how many pawls on the freehub. Pretty common terminology.
Hands On Bike: Merida Scultura 5000 - Ultegra 6800 11 Speed Wheelset
The question makes perfect sense, he's asking how many pawls on the freehub. Pretty common terminology.
How many points of engagement for each wheel revolution of the drive mech. Not all freehubs use pawls. Andy.
02-02-17, 09:11 AM
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Question made no sense to me either, but on reading the Merida review: points of engagement refers to the gear tooth # inside
the hub on which the pawl(s) engage or slip over depending on direction of rotation of the chain. Most hubs have either
two or three pawls and the gear 16 to 45 teeth, per the article. Might explain why some hubs are really noisy coasting.
Learned something.
the hub on which the pawl(s) engage or slip over depending on direction of rotation of the chain. Most hubs have either
two or three pawls and the gear 16 to 45 teeth, per the article. Might explain why some hubs are really noisy coasting.
Learned something.
02-02-17, 09:34 AM
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Good explanation. My Campy Chorus freehub does indeed have the "ring gear" in the hub shell and is quite vocal while coasting. My Shimano hubs have the entire mechanism in the freehub body and are nearly inaudible.
02-02-17, 09:54 AM
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Sure, if you want to continue the confusion of terms that the average reader tosses about. Most readers will consider the freehub body as a part of the hub because without the FH body the hub shell can't function as a hub. I assume you are jesting? Andy
02-03-17, 09:22 AM
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20.
Hands On Bike: Merida Scultura 5000 - Ultegra 6800 11 Speed Wheelset
The question makes perfect sense, he's asking how many pawls on the freehub. Pretty common terminology.
Hands On Bike: Merida Scultura 5000 - Ultegra 6800 11 Speed Wheelset
The question makes perfect sense, he's asking how many pawls on the freehub. Pretty common terminology.
02-03-17, 09:27 AM
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Reason I ask is that seems like my old WI T11's were better at shifting/getting going - wondering if it's cause of this feature? There's like this free space sometimes - does that make any sense or am I imagining it?
02-03-17, 09:44 AM
#14
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A shimano freehub body has 15 teeth and two pawls. The pawls do not engage at the same time so that one engages every 12 degrees.
02-03-17, 10:55 AM
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02-03-17, 05:18 PM
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02-04-17, 01:27 PM
#18
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02-06-17, 01:42 PM
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I count 16 'teeth'. With 2 offset pawls, this means 32 'points of engagement'. More than enough for any real life riding purposes.
Of course, it is not possible for more than one pawl to carry torque at one time, so the reasons for more than one pawl are:
More pawls does not make a 'stronger' rear hub. And the Shimano freehub design is better than any other that I've dealt with, and I've pulled apart and serviced dozens of different hub types.
Of course, it is not possible for more than one pawl to carry torque at one time, so the reasons for more than one pawl are:
- To add more 'points of engagement', and
- Act as a backup - in the case that pawl #1 fails.
More pawls does not make a 'stronger' rear hub. And the Shimano freehub design is better than any other that I've dealt with, and I've pulled apart and serviced dozens of different hub types.
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