|
|
|
Thread Tools | Display Modes |
#11
|
|||
|
|||
Chain idler efficiency - roller vs. toothed
Tom Sherman wrote:
Jon Bendtsen wrote: Adam Kadlubek wrote: On 28 Kwi, 00:37, Jon Bendtsen wrote: Tom Sherman wrote: Jon Bendtsen wrote: Tom Sherman wrote: TandemFan wrote: [cross-posted to ARBR for Perry Butler's amusement] [cuuuut] not necessarily a bad thing, as several issues with short chain lines go away that make wide range gearing difficult. Why would short chainlines make wide range gearing difficult? Cross chain without guilt for instance. Then combine a rohloff/nuvinci + a schlumpf drive == 0 cross chain. No cross chain, but large expense. Yeah, rohloff is expensive. Nuvinci is not so bad, neither are the schlumpf drive. Together they are, but you do get a VERY wide gear range with no steps, it is all continuously variable. I dont think i need more range than what the Nuvinci can give me, which is a little wider than the 8 gear derailure i have now. If normal bikes can live with some cross chain, so can a recumbent. Cross-chaining becomes much less of an detriment with a long chain line. You get other problems with a long chainline. If something hits it trash or some plants. But as you said above, it's a question about tradeoffs. I just dont like long chainlines. And neither those tubes they run in. |
Ads |
#12
|
|||
|
|||
Chain idler efficiency - roller vs. toothed
Jon Bendtsen wrote:
Tom Sherman wrote: Jon Bendtsen wrote: Adam Kadlubek wrote: On 28 Kwi, 00:37, Jon Bendtsen wrote: Tom Sherman wrote: Jon Bendtsen wrote: Tom Sherman wrote: TandemFan wrote: [cross-posted to ARBR for Perry Butler's amusement] [cuuuut] not necessarily a bad thing, as several issues with short chain lines go away that make wide range gearing difficult. Why would short chainlines make wide range gearing difficult? Cross chain without guilt for instance. Then combine a rohloff/nuvinci + a schlumpf drive == 0 cross chain. No cross chain, but large expense. Yeah, rohloff is expensive. Nuvinci is not so bad, neither are the schlumpf drive. Together they are, but you do get a VERY wide gear range with no steps, it is all continuously variable. I dont think i need more range than what the Nuvinci can give me, which is a little wider than the 8 gear derailure i have now. i forgot to mention that i eventually want a Nuvinci, so i might as well go for a bike that has a short chain line + you can actually mount a child seat, i havent found others that allowed that. JonB |
#13
|
|||
|
|||
Chain idler efficiency - roller vs. toothed
"Jon Bendtsen" wrote
You get other problems with a long chainline. If something hits it trash or some plants. Most likely places of plant interaction with chain line seem independent of chain length, e.i., at chain rings, derailuers, idlers... And some recumbent designs with higher bottom brackets raise chain overall. But as you said above, it's a question about tradeoffs. I just dont like long chainlines. And neither those tubes they run in. Fine, but don't presume that all long chain lines have tubes. For instance, the Easy Racers LWB bikes have chains about 2.3 times longer than "normal" but have no tubes. Jon |
|
Thread Tools | |
Display Modes | |
|
|
Similar Threads | ||||
Thread | Thread Starter | Forum | Replies | Last Post |
Block chain, roller chain, shaft-drive, wood-rim, and world's weirdest chain | [email protected] | Techniques | 8 | April 15th 07 01:50 AM |
Recumbent chain idler | Wally | UK | 16 | January 23rd 06 09:42 PM |
Anyone out there ever use a TearraCycle chain idler? | John Knez | Recumbent Biking | 4 | January 22nd 06 05:01 AM |
Long Chain Idler Issue | Blackburn Pete | Recumbent Biking | 1 | April 20th 05 04:59 AM |