415H O-ring Chain

Fabian · #1 10-12-2009, 09:11 AM

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 s

Fabian

Fabian · #2 10-12-2009, 10:24 AM

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

**Bikeguy Joe** · #3 10-12-2009, 12:28 PM

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

That's just me though.

**Bikeguy Joe** · #4 10-12-2009, 12:29 PM

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

Outrunner · #5 10-12-2009, 08:28 PM

Quote:

Originally Posted by Bikeguy Joe

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

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.

Fabian · #6 10-13-2009, 07:14 AM

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

**Bikeguy Joe** · #7 10-13-2009, 11:40 AM

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

wildemere · #8 10-13-2009, 08:35 PM

"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.

Technocyclist · #9 10-14-2009, 04:14 AM

Quote:

Originally Posted by Fabian

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

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...

**BarelyAWake** · #10 10-14-2009, 04:23 AM

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.