SA Dynohub Help
04-11-08 | 10:59 AM
#1
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SA Dynohub Help
I have a 58 Humber that I have completely taken apart, dipped, polished, greased, and reassembeled, with the exception of the front wheel. The dynohub has an incredible amount of drag. Is it a really bad idea to not include the magnet portion when reassembling the wheel. Will it work? Or am I just asking for loads of trouble...
04-11-08 | 01:56 PM
#2
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From: Auld Blighty
Bikes: Early Cannondale tandem, '99 S&S Frezoni Audax, '65 Moulton Stowaway, '52 Claud Butler, TSR30, Brompton
You are very likely to permanently weaken the magnet strength and the Dynohub will then never produce worthwhile voltage if/when you reassemble it.
04-11-08 | 05:19 PM
#3
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ISO: A late 1980's Giant Iguana MTB frameset (or complete bike) 23" Red with yellow graphics.
"Cycling should be a way of life, not a hobby.
RIDE, YOU FOOL, RIDE!"_Nicodemus
"Steel: nearly a thousand years of metallurgical development
Aluminum: barely a hundred
Which one would you rather have under your butt at 30mph?"_krazygluon
04-11-08 | 05:27 PM
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And remember to adjust the bearing cones whilst the wheel is in the frame, and double-check the adjustment after tightening the axle nuts down.
The lack of fixing nuts on these hubs (most Sturmey hubs, for that matter) can drive some folks nuts if they're not familiar with it - I recall one of the LBS wrenches fiddling in utter confusion when a '62 Superbe came in one day with a severely jammed front Dynohub - ended up adjusting and re-mounting it for him (Problem? Cones were too tight) before he did any further damage.
-Kurt
The lack of fixing nuts on these hubs (most Sturmey hubs, for that matter) can drive some folks nuts if they're not familiar with it - I recall one of the LBS wrenches fiddling in utter confusion when a '62 Superbe came in one day with a severely jammed front Dynohub - ended up adjusting and re-mounting it for him (Problem? Cones were too tight) before he did any further damage.
-Kurt
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04-11-08 | 08:50 PM
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THe dynohub is supposed to have drag. That's the magnets. It both pulls and pushes, though, so once you get going it's almost equal. Greatest light source for a bike. I put them on four of my bikes. If I had more, I'd install'em.
04-11-08 | 10:11 PM
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The latter was the case (in an extreme form) on the example I fixed. Pretty much jammed.
-Kurt
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04-13-08 | 12:39 AM
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Thanks for all the responses. I do appreciate it.
But in regards to the previous questions...
1. The hub was missing a bolt to secure the wires. I think it would be very difficult to find a whitworth bolt that small. Or at least I dont want to go through the trouble.
2. The bike did not come with a light.
3. It is for my wife to ride. She IS NOT going to ride in the dark. It is not going to happen. i know her too well.
But in regards to the previous questions...
1. The hub was missing a bolt to secure the wires. I think it would be very difficult to find a whitworth bolt that small. Or at least I dont want to go through the trouble.
2. The bike did not come with a light.
3. It is for my wife to ride. She IS NOT going to ride in the dark. It is not going to happen. i know her too well.
04-13-08 | 06:14 AM
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Thanks for all the responses. I do appreciate it.
But in regards to the previous questions...
1. The hub was missing a bolt to secure the wires. I think it would be very difficult to find a whitworth bolt that small. Or at least I dont want to go through the trouble.
2. The bike did not come with a light.
3. It is for my wife to ride. She IS NOT going to ride in the dark. It is not going to happen. i know her too well.
But in regards to the previous questions...
1. The hub was missing a bolt to secure the wires. I think it would be very difficult to find a whitworth bolt that small. Or at least I dont want to go through the trouble.
2. The bike did not come with a light.
3. It is for my wife to ride. She IS NOT going to ride in the dark. It is not going to happen. i know her too well.
Aaron
__________________
Webshots is bailing out, if you find any of my posts with corrupt picture files and want to see them corrected please let me know. :(
ISO: A late 1980's Giant Iguana MTB frameset (or complete bike) 23" Red with yellow graphics.
"Cycling should be a way of life, not a hobby.
RIDE, YOU FOOL, RIDE!"_Nicodemus
"Steel: nearly a thousand years of metallurgical development
Aluminum: barely a hundred
Which one would you rather have under your butt at 30mph?"_krazygluon
Webshots is bailing out, if you find any of my posts with corrupt picture files and want to see them corrected please let me know. :(
ISO: A late 1980's Giant Iguana MTB frameset (or complete bike) 23" Red with yellow graphics.
"Cycling should be a way of life, not a hobby.
RIDE, YOU FOOL, RIDE!"_Nicodemus
"Steel: nearly a thousand years of metallurgical development
Aluminum: barely a hundred
Which one would you rather have under your butt at 30mph?"_krazygluon
07-24-09 | 09:17 PM
#9
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Bikes: Batavus Lento, Litespeed, and 1963 CCM Imperial Mark IV 3-speed just for fun. Oh yeah, a 1971 Gitane tandem 10-speed touring.
+1. Find another period wheel and ebay the dynohub. No reason to kill it just because it isn't going to be used. I am willing to bet you could find someone on here willing to trade you another wheel for it.
Agreed. Shame to destroy one of these beauties. There are lots of other wheels out there that will fit the bill if you don't want the dynohub function.
Agreed. Shame to destroy one of these beauties. There are lots of other wheels out there that will fit the bill if you don't want the dynohub function.
