|
|
Thread Tools | Display Modes |
#1
|
|||
|
|||
Long Chain Idler Issue
I am riding an Evox LE (Semi-Recumbent) in Ottawa, Ontario, Canada and I
am hearing a lot of noise from the single chain idler on the return portion of the chain. The idler is riding on a post that is mounted on a hanger from the frame. There is no bearing there, only a bushing and I would like to find a suitable replacement that has sealed bearings. The current idler has about an inch (2.5 cm) of shaft to accomodated the side to side chain movement on the 8-speed cassette. Has anyone got some advice concerning the following questions? Is it necessary to allow that much play for the idler to travel side to side? Should I use a modified roller-blade/skateboard wheel with a groove cut out for the chain? Should I get a sealed bearing derailleur idler with teeth and use that? Is there a company that could supply an idler with sealed bearings? The same bike is also branded as a Mikado Quetzal LE. Here is a link to the specs. http://www.mikadobicycles.com/en/popup_specs.asp?id=5 I am refering to the idler near the back wheel rim. Thanks for your help. |
Ads |
#2
|
|||
|
|||
Is it necessary to allow that much play for the idler to travel side to side? too little side-side play will result in high angles at the chain/derailleur/chainring/cluster. Wedgies do ok with high angles, but not the extreme inner-outer or outer-inner. Should I use a modified roller-blade/skateboard wheel with a groove cut out for the chain? That's a fair approximation of what other idler wheels look like. And probably how they start their life. There are not enough bents to warrant a special production run just for us (sadly). Should I get a sealed bearing derailleur idler with teeth and use that? They are a smaller diameter than the idler wheels, and without enough tension on the chain it may hop off easily - long chains do have lots of play on bumpy surfaces. Is there a company that could supply an idler with sealed bearings? Terracycle (http://www.terracycle.com/parts.htm) sells idler kits, single and double for power side, return side, and over/under. |
Thread Tools | |
Display Modes | |
|
|
Similar Threads | ||||
Thread | Thread Starter | Forum | Replies | Last Post |
Billy removes support from Peewee (seeXXXVII for a Laugh) | Di | Social Issues | 3 | October 29th 04 05:31 AM |
Is my chain too long? | Bob Marchese | General | 8 | August 27th 04 01:31 PM |
Actual data for the chain cleaning debate | TBGibb | Techniques | 60 | January 11th 04 03:32 AM |
Team vs Strada | mjbass | Recumbent Biking | 43 | January 5th 04 04:28 AM |
Too-Wide Chain: More Likely To Break? | (Pete Cresswell) | Techniques | 12 | December 21st 03 05:51 AM |