scorpatic Posted December 30, 2013 Report Share Posted December 30, 2013 As The topic says, I want too fit a long life chain to the Ossa, as I am in sand, mud and dust a lot. I am told the chain is wider by a little but uncertain as to how much and whether it will round the drive sprocket. I know I have to increase the size of the chain tensioner cage. Any clues? Quote Link to comment Share on other sites More sharing options...
maxbikes Posted December 30, 2013 Report Share Posted December 30, 2013 I don't know if it will fit.but personaly I prefer to use non o ring did standard chain,and pressure wash it and light oil after use.i find chain will last long time.if you use o ring chain you can damage o rings with pressure washer and don't last much longer. 1 Quote Link to comment Share on other sites More sharing options...
lineaway Posted December 30, 2013 Report Share Posted December 30, 2013 An o-ring chain has may applications. One of them is not on a trials bike. They are heavy and power robbing. How many miles do you think you ride every time out? Our bikes usually have low miles , high hours. I usually go through two standard chains per a set of sprockets, which is still cheaper than one o-ring chain. (I know that you learned that was not proper, but our sport is quite different.) Quote Link to comment Share on other sites More sharing options...
baldilocks Posted December 31, 2013 Report Share Posted December 31, 2013 O ring chains were being used in the ssdt in the late 80's early 90's. I used them myself and after ssdt used it the rest of the year. It would need adjusting once or twice in all that time. You cant fit them to a gas gas pro or a beta as the chain is too wide, ossa maybe the same. Down sides are you do lose power 5 - 10% and if the chain breaks you need a tool to re fit chain link as its a press fit. Non o ring chains have improved to the extent renthal or regina chain will last the ssdt. Bear in mind also that oring chains are harder on the sprockets. Id buy a renthal R1 chain in your shoes. Quote Link to comment Share on other sites More sharing options...
digga Posted December 31, 2013 Report Share Posted December 31, 2013 Yeah as the other members have said I would give an o-ring chain a miss,due to size restictions and power loss,I have had a great run with an ( RK-GB520MXZ4/Gold ) (non 0-ring) chain,had it on a 2001-321 Gasser for a few years,On my 2012 Ossa I have been running a (DID-ERT2/Gold ) for the past 12months,it has barely stretched,both of these are lightweight motocross chains all rated over 8000lb tensile strength. But in saying all this I remove the chain after every ride,wash in fuel,let dry and then soak it in a tub of oil for an hour or two,then hang to drain excess and refit to bike prior to next ride,yes its a task but I am still on the original sprockets (that came on the Ossa) and the DID chain that I fitted to the bike just after buying it. From what I have seen over the past years all the "trials chains" by ( Regina,Iris & CZ ) are just junk,they just stretch week after week,its never ending till they wont fit the sprockets. Quote Link to comment Share on other sites More sharing options...
jkmr1 Posted December 31, 2013 Report Share Posted December 31, 2013 I Agree with digga. Fit a good quality non O-ring MX chain. Will last for years if looked after. In my experience, lightweight trials chains are rubbish. Quote Link to comment Share on other sites More sharing options...
baldilocks Posted December 31, 2013 Report Share Posted December 31, 2013 Regina make two one is rubbish the better one is as good as a renthal. I jet wash the bike spray chain with wd40 and thats it. Haven't heard a good report on an Iris chain, ever ! I get 6 months out of either renthal or the better regina Quote Link to comment Share on other sites More sharing options...
tony27 Posted January 1, 2014 Report Share Posted January 1, 2014 Isn't the renthal actually made by regina anyway? I used to use an o-ring on my jt35 in the 90s but since I've had shercos I find the better regina lasts well, a lot of guys use did mx chain but the 1 they really liked isn't available anymore Quote Link to comment Share on other sites More sharing options...
trialtrial Posted January 1, 2014 Report Share Posted January 1, 2014 I can understand wanting an o ring chain for trail riding with a trials bike. Lots of sustained riding through harsh conditions wears down a chain really fast. DID X ring chains have 50% less friction than other O ring chains, so that might be something to consider for a trials bike. The stock chain width is about 0.700" The DID narrow 520VX2 is 0.736" I haven't tried it, but it might work, but will probably excessively rub the front sprocket "chain protection plate" and wear it prematurely. I can see anything on the motor side that would wear. Quote Link to comment Share on other sites More sharing options...
scorpatic Posted January 6, 2014 Author Report Share Posted January 6, 2014 Thanks chaps, will check out the Renthal MX chain.. Quote Link to comment Share on other sites More sharing options...
lotus54 Posted February 15, 2014 Report Share Posted February 15, 2014 I fit the DID narrow to my Explorer. The original chain was junk- I ride in the mud a lot and often 40-50 miles of tight single track on a ride. Maybe loose a little power, but it has so much less than my 300 KTM that I didn't notice it. If you use a rivet link I think it would fit right in. The clip link is wider than the rest of the chain by a fair amount. I didn't have a rivet link, so I opened up the chain tensioner block a little- works great! I wish it had an enclosed chain...but nobody does that anymore. Quote Link to comment Share on other sites More sharing options...
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