|
|
Thread Tools | Display Modes |
#21
|
|||
|
|||
how many bearings does a single speed bike have?
AMuzi wrote:
There are no roller bearings in the F&S Torpedo Dreigang gearbox. http://www.scheunenfun.de/images/nab...ohnebremse.pdf Hm, I've never seen that exploded before - here is a better one: http://user.it.uu.se/~embe8573/bike/torpedo-3.jpg Nevertheless, you are right! The roller bearings are in the single speed hub! That means, the original calculation could look like this: rear hub 4 (2 big, 1 small, 1 roller) crank/BB 2 pedals 2*2=4 (or 2*1=2) front wheel 2 head tube + 2 ------ 14 (or 12) -- underground experts united http://user.it.uu.se/~embe8573 |
Ads |
#22
|
|||
|
|||
how many bearings does a single speed bike have?
AMuzi wrote:
There are no roller bearings in an F&F Torpedo coaster hub. You mistake the 5-roller clutch for a bearing. In the documentation, the small rods are refered to as "lagerbult" which is literally "bearing bolt". But let's approach this from another angle - what is the definition of a bearing and where does these rods fail to meet it? -- underground experts united http://user.it.uu.se/~embe8573 |
#23
|
|||
|
|||
how many bearings does a single speed bike have?
On 7/30/2017 6:03 PM, Emanuel Berg wrote:
AMuzi wrote: There are no roller bearings in an F&F Torpedo coaster hub. You mistake the 5-roller clutch for a bearing. In the documentation, the small rods are refered to as "lagerbult" which is literally "bearing bolt". But let's approach this from another angle - what is the definition of a bearing and where does these rods fail to meet it? You can define you own terms for your own use as you like. But that's a roller clutch: http://www.automotivedictionary.org/Roller_clutch p.s. typo should be F&S -- Andrew Muzi www.yellowjersey.org/ Open every day since 1 April, 1971 |
#24
|
|||
|
|||
how many bearings does a single speed bike have?
AMuzi wrote:
You can define you own terms for your own use as you like. I asked how/where it would fail a definition. According to Wikipedia, the definition is "Bearing (mechanical), a component that separates moving parts and takes a load"[*] If "load" can be the component itself or an extention thereof, that's what it is what I can see. In all honesty tho, the Torpedo 3 SP has a planet carrier and into the planet wheels are also the rods refered to as "lagerbultar" or "bearing bolts" - and that whole thing looks even less a bearing. So perhaps one shouldn't stare oneself blind on what the rods are called! What are they called in English? In German they are called "Stoubdeckel" which GT fails to translate to English... But that's a roller clutch OK, so now the list looks like this: rear hub 3 the 5-roller clutch is not a roller bearing crank/BB 2 pedals 2*2=4 or 2*1=2 front wheel 2 head tube + 2 headset 1, fork 1 ------ 13 or 11 [1] https://en.wikipedia.org/wiki/Bearing_(mechanical) -- underground experts united http://user.it.uu.se/~embe8573 |
#25
|
|||
|
|||
how many bearings does a single speed bike have?
On Sun, 30 Jul 2017 10:46:19 +0200, Emanuel Berg
wrote: John B. wrote: Given that the bearings you are counting are simply a bunch of balls maybe you need to get down to fundamentals and count the balls themselves. Great idea! Only... with the exception of the branded rear hubs, do the balls really occur with any regularity from bike to bike? I know that in the front wheel hub sometimes the balls run loose and sometimes they are in a retainer. Shimano wheels are still (I believe) being manufactured using loose balls and I have a spare BB bearing set with loose balls and I also have a bike that uses loose balls for the head bearings so I would have to say that yes, loose balls are used in bicycles. And like the length of a boat the larger number of "bearings" sounds much bigger and more important :-) -- Cheers, John B. |
#26
|
|||
|
|||
how many bearings does a single speed bike have?
On Mon, 31 Jul 2017 01:03:59 +0200, Emanuel Berg
wrote: AMuzi wrote: There are no roller bearings in an F&F Torpedo coaster hub. You mistake the 5-roller clutch for a bearing. In the documentation, the small rods are refered to as "lagerbult" which is literally "bearing bolt". :-) Well in other languages that likely were derived from the same root language as yours "lager" can mean beer or a camp surrounded by a temporary fence, sometimes made by wagons :-) "Bolt Beer"? :-) But let's approach this from another angle - what is the definition of a bearing and where does these rods fail to meet it? -- Cheers, John B. |
#27
|
|||
|
|||
how many bearings does a single speed bike have?
On Sun, 30 Jul 2017 13:04:30 -0400, Frank Krygowski
wrote: On 7/30/2017 3:45 AM, John B. wrote: On Sun, 30 Jul 2017 06:17:05 +0200, Emanuel Berg wrote: Frank Krygowski wrote: Doesn't it have two pedals? Yes, that's what it says: Pedals - 2 OK, now it should be correct: rear hub 3 crank/BB 2 pedals 2*2=4 front wheel 2 fork + 2 ------ 13 Hey, maybe bikes aren't that simple after all? Buy the cheaper pedals that have no bearings at all and you are down to 9 bearings. Well, a "plain bearing" is still a bearing, and a pedal does have two bearings of one sort or another. One is at the crank side, one is at the outside. I suppose it's marginally possible to have only one deep groove ball bearing at the axle side. The pedal would be loaded as a cantilever beam, and you'd be hoping that the deep groove would resist the bending moment. But I don't know of any that are done that way. You obviously aren't into cheap pedals :-) The local kids come by to have their bikes fixed and some of the pedals are simply a molded plastic shape with a hole through it. A single plain bearing, as it were. The "axle", threaded into the crank, runs all the way through the pedal with a pressed on clip on the outer end to hold it together. Less then $3.00 a pair :-) -- Cheers, John B. |
#28
|
|||
|
|||
how many bearings does a single speed bike have?
John B. wrote:
In the documentation, the small rods are refered to as "lagerbult" which is literally "bearing bolt". :-) Well in other languages that likely were derived from the same root language as yours "lager" can mean beer or a camp surrounded by a temporary fence, sometimes made by wagons :-) Almost! "Lager" is "beer" AND "bearing". "Läger" is "camp". Yes, you can have one with tents and/or wagons. I don't think the fence is mandatory -- underground experts united http://user.it.uu.se/~embe8573 |
#29
|
|||
|
|||
how many bearings does a single speed bike have?
I've posted the file on my web page. I'm sure
it'll be the most popular section since forever http://user.it.uu.se/~embe8573/bike/bearings.txt Everybody happy? -- underground experts united http://user.it.uu.se/~embe8573 |
#30
|
|||
|
|||
how many bearings does a single speed bike have?
On Mon, 31 Jul 2017 08:50:11 +0700, John B.
wrote: You obviously aren't into cheap pedals :-) The local kids come by to have their bikes fixed and some of the pedals are simply a molded plastic shape with a hole through it. A single plain bearing, as it were. The "axle", threaded into the crank, runs all the way through the pedal with a pressed on clip on the outer end to hold it together. Less then $3.00 a pair :-) Zero bearing pedals were released about 5 years ago as "Moto Urban Bicycling Pedals". 55 Euros including VAT plus 9.5 Euro shipping: https://i.ytimg.com/vi/6EDT3rbPJr4/maxresdefault.jpg http://www.motobicycles.com/tl_files/images/artikel/pedal-wood-explode-black.jpg http://www.motobicycles.com/moto-urban-pedal-en.html https://www.youtube.com/channel/UCN8rILhNxm7GL_H80Y1IWbw I'm tempted to try these because they might solve my problem of riding while wearing construction boots. -- Jeff Liebermann 150 Felker St #D http://www.LearnByDestroying.com Santa Cruz CA 95060 http://802.11junk.com Skype: JeffLiebermann AE6KS 831-336-2558 |
Thread Tools | |
Display Modes | |
|
|
Similar Threads | ||||
Thread | Thread Starter | Forum | Replies | Last Post |
cinelli track bike, single speed need to sell it | [email protected] | Marketplace | 0 | October 26th 08 05:05 PM |
London commute - Which single speed bike? | jh | UK | 24 | December 28th 07 10:00 PM |
WTB:: Single Speed Mountain Bike ... fairly new | Andy Nguyen | Marketplace | 4 | September 1st 05 11:51 PM |
WANTED: Road Bike, Track Bike, Single Speed, ANY! | belikekrista | Marketplace | 1 | September 18th 04 01:33 AM |
Turning that self-destructed gripshifter bike into a single speed | Pat | General | 3 | October 14th 03 04:43 PM |