415H O-ring Chain

Discussion in 'Motorized Bicycle General Discussion' started by Fabian, Oct 12, 2009.

  1. Fabian

    Fabian New Member

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    G'day all

    I'm only asking this question as i've done the research and haven't been able to find a manufacturer that makes an o-ring chain in 410 heavy duty and 415 heavy duty.

    I know there is next to "no" chance of finding such a chain, but does anyone know if there's a manufacturer who makes specialist small size o-ring chains in specifically 410 and 415 heavy duty spec.

    Fabian
     
  2. Fabian

    Fabian New Member

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    Ok,

    Been doing more research and i've come up with a solution to the problem of finding a manufacturer that makes a 415H O-Ring chain for our motorised bicycles.
    In Japan they sell a lot of specialised chains for small cc racing categories that we don't even know about, or even get to see the specifications on chain manufacturers english speaking websites.

    I'm sure they would make a 410H O-Ring chain but as i can't read Japanese, the research side of things is almost impossible.

    Photo attached of RK 415H O-Ring Chain
    Other manufacturers would make a similar product but i haven't been able to find anything.

    Fabian
     

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  3. Bikeguy Joe

    Bikeguy Joe Godfather of Motorized Bicycles

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    I wouldn't waste my time or money on a chain like that, it would be complete over kill.

    That's just me though.
     
  4. Bikeguy Joe

    Bikeguy Joe Godfather of Motorized Bicycles

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    Not to mention it would probably rob you of a little precious horsepower.
     
  5. Outrunner

    Outrunner New Member

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    I must say, that I agree with BgJoe obout the chain. It's just not needed. Just buy
    a good quality chain from sick bikes and go riding.
     
    #5 Outrunner, Oct 12, 2009
    Last edited: Oct 12, 2009
  6. Fabian

    Fabian New Member

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    When you only have 15 outer links in a chain circuit, the cycle period is quite high over 100 kilometers as compared to a single speed setup which may have 50 or more outer links to distribute power.
    The extra friction would be negligible with an o-ring racing chain.

    I'm prepared to pay for quality (it always works out better in the end) just like the SickBikeParts Jackshaft kit.
    I chose the Delux version over the standard version only because i couldn't get a Super Platinum Megaspec version of the Jackshaft kit.

    Same as the power generation/power assist project i'm working on.
    Will it be affordable - "NO" it won't be, but i'm prepared to pay for something that drips quality and when 50 kilometers from home, i know it's going to reliably 'get me back to my starting point'.

    Fabian
     
  7. Bikeguy Joe

    Bikeguy Joe Godfather of Motorized Bicycles

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    I hope you aren't planning on using a chinabuilt kit then...
     
  8. wildemere

    wildemere New Member

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    "Small CC" Motorcycle racers avoid O ring chain because of power losses.

    This is at the expense of maintenance though.

    O ring chain was designed for durability and low maintenance on Road Bikes or extreme conditions like enduro racing.

    Also, they dont typically have a 10t sprocket that will further sap power with bending losses.

    Its a myth that O ring chain out lasts non-O ring chain. Its the construction materials and lubrication that determine chain life. A high tensile steel non O ring chain will outlast a mild steel O ring chain.

    The ultimate "quality" setup for you would be Titanium chain and sprockets using the best fully synthetic chain lube. Or design a gear drive...

    Anyway, O ring chain is old news, if you must have a rubberized chain then its X rings or V rings you need.
     
  9. Technocyclist

    Technocyclist Motorized Bicycle Senior Technologist

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    That chain is too thick, it will probably won't fit, depends on the engine. It did'nt fit mine. So I used BMX half links...
     
  10. BarelyAWake

    BarelyAWake New Member

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    Even the domestic equivalent (41) of the 415 is a bit too beefy in my opinion, I'd really like to switch to the "heavy duty BMX chain" others have mentioned in the interest of reducing drag and noise.

    If anyone has a part number I'd love it if ya gave me a shout out ;)

    As so many are successfully running jack shafts and thus - their regular bike chain is taking all the drive load, I really think the oversize 41/415 is just plain unnecessary. In addition such a BMX chain is often available in far better quality than the kit supplied 415 or even a 41 picked up from a local hardware store.
     
  11. Technocyclist

    Technocyclist Motorized Bicycle Senior Technologist

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    Yaban BMX Half links MK918

    Hi BA,

    Here's a link of the part number, MK918 Yaban Half Links BMX Chain. It claims to have a 1.5 ton breaking point. I'm using this on the shifter kit. However, this chain does stretch a lot.

    YABAN Chain Industrial Co., Ltd.
     
  12. BarelyAWake

    BarelyAWake New Member

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    This un?
    Eastern Bikes Half-link 1/2 x 1/8-inch Silver BMX Chain

    If so - then it's a 1/2 x 1/8-inch size/pitch? I'm not runnin' a jackshaft (I wish lol) so this would be for the engine sprocket to rear drive sprocket, supplied with the kit.

    If indeed that's the size/pitch, Thanks a million man! Tho I might go to my local bike shop and see what they've got...

    I suppose I could bring a section of chain to match spacing lol - but I always seem to forget o_O
     
  13. Technocyclist

    Technocyclist Motorized Bicycle Senior Technologist

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    Yup, it's the same MK918... 1/2 x 1/8 chain size. Just tell the bikeshop it's a BMX chain and they'll know the size.

    You're welcome. :)
     
  14. BarelyAWake

    BarelyAWake New Member

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    lol - you DID post a link, I didn't see it all hidden at the bottom there :p

    Thanks again... man, I need more coffee heh
     
  15. Sydneysider

    Sydneysider New Member

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    somewhere I read that dirt in the chain is the biggest factor even bigger than the load, that causes them to wear.. the cleaner the chain the less stretch, is this true?
     
    #15 Sydneysider, Oct 14, 2009
    Last edited: Oct 14, 2009
  16. Technocyclist

    Technocyclist Motorized Bicycle Senior Technologist

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    Chain Stretching

    This can be open for debate... It is said that never to use wd40 in cleaning your chain, why? because when you clean the chain this way, it removes the metal shivers that actually maintains the clearances in the chain and avoids it from stretching. On the other hand, if the debris on the chain are corrosive or abrasive then it will shorten the chain's life or make it stretch a lot and increase the clearance between the chain links. I think there should be a balance on how much cleaning is done. I usually wipe the sides of the chain with a degreaser and re-oil it, wipe off excess oil. Sometimes, i use graphite powder lubricant... Hope this answers your query... :)
     
    #16 Technocyclist, Oct 15, 2009
    Last edited: Oct 15, 2009
  17. wildemere

    wildemere New Member

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    Read this online book about chain technology.

    Table of Contents

    Then you will understand everything there is to know about chain drive.

    Things like its wear characteristics , lube requirements, tension settings, noise, vibration, chordal harmonics and construction.

    After reading such an engineering document, all will be clear.
     
  18. Technocyclist

    Technocyclist Motorized Bicycle Senior Technologist

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    Thanks, wildemere, I found the answers in Chapters 2.2.4 and 7.2.4.
     
  19. Bikeguy Joe

    Bikeguy Joe Godfather of Motorized Bicycles

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    wildermere- You've got a space between the word "characteristics" and your comma.
     
  20. Bikeguy Joe

    Bikeguy Joe Godfather of Motorized Bicycles

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    Also when using proper grammar, it is not correct to start a sentence with the word "then".
     

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