niconj Posted January 21, 2014 Report Share Posted January 21, 2014 (edited) Hello, so I've got a new Because Simple Trials frame and with it a new KMC Z610HX chain, which, so I've read, is a very good chain for trials. I run a Trialtech 18T sprocket on the front and a Hope Pro II Evo Trials (the one with the strong bolts) on the back and have two Shimano DX sprockets; 14T and 15T. Now I tried fitting the 14T first but the chain is either too short or way too long (the end caps of my Hope stand over the frame half their diameter). It gets better with the 15T but again, it's either too short or the end caps are just standing over the dropouts, maybe 2mm. So I went on the Because website (which is crap btw) and couldn't find any information for which gear ratio the frame was designed. It couldn't possibly be 18/16 now could it? The problem I have is that I can ride 18/15 w/o any problems but as soon as the KMC chain lengthens*, the end caps will stand over more. Could this be a problem? I also have notched snail cams that are mounted on the outside. Thanks, Nico. *How much does it lengthen on the initial rides? Edited January 21, 2014 by niconj Quote Link to comment Share on other sites More sharing options...
Martin Reynolds Posted January 21, 2014 Report Share Posted January 21, 2014 Have you tried using a half link? The trials specific one allows for better chain length, and are far stronger than normal half link chains Quote Link to comment Share on other sites More sharing options...
niconj Posted January 21, 2014 Author Report Share Posted January 21, 2014 (edited) Have you tried using a half link? The trials specific one allows for better chain length, and are far stronger than normal half link chains I've got a half link (this one) but don't know whether it is "trials specific". From what I've read though, half links aren't really good. Edited January 21, 2014 by niconj Quote Link to comment Share on other sites More sharing options...
Martin Reynolds Posted January 21, 2014 Report Share Posted January 21, 2014 I've got a half link (this one) but don't know whether it is "trials specific". From what I've read though, half links aren't really good. Looks like the same as the gusset one. Got a picture of the setup with 15T and it slighly out the dropouts? 2mm doesnt sound that bad, especially when you're using a pro 2 and you can really tighten the bolts up properly. Quote Link to comment Share on other sites More sharing options...
niconj Posted January 21, 2014 Author Report Share Posted January 21, 2014 (edited) Got a picture of the setup with 15T and it slighly out the dropouts? 2mm doesnt sound that bad, especially when you're using a pro 2 and you can really tighten the bolts up properly. No it doesn't but the chain is new and will lengthen quite a bit, won't it? The K710 I've had before was like a rubber band. I weigh 13.5 stone if that matters. Edited January 21, 2014 by niconj Quote Link to comment Share on other sites More sharing options...
Martin Reynolds Posted January 21, 2014 Report Share Posted January 21, 2014 No it doesn't but the chain is new and will lengthen, won't it? yes it can, but it can depend on the chain. If it doesnt streach, you'll be fine, and if it does, it could be the right length if you remove the half link, if you see where im coming from? Quote Link to comment Share on other sites More sharing options...
thinkdougie Posted January 21, 2014 Report Share Posted January 21, 2014 Don't use a half link you'll hurt yourself badly. Run the slack chain and use a chain tensioner like the heatsink or a spoke. Quote Link to comment Share on other sites More sharing options...
CalopS Posted January 22, 2014 Report Share Posted January 22, 2014 Try a 13. Quote Link to comment Share on other sites More sharing options...
narrowbars Posted January 22, 2014 Report Share Posted January 22, 2014 Ran mine 18-14t without any issues. Same chain as well 610hx Quote Link to comment Share on other sites More sharing options...
dave33 Posted January 22, 2014 Report Share Posted January 22, 2014 The 610 doesn't stretch to much compared to 710. Maybe you could post a couple of pics to see the location. Quote Link to comment Share on other sites More sharing options...
niconj Posted January 22, 2014 Author Report Share Posted January 22, 2014 (edited) Ran mine 18-14t without any issues. Same chain as well 610hx How is that possible? I've got the frame without disc though. Might have a different chain stay length. My dropouts look shorter too. http://www.becausebike.com/Product.php?bid=4&aID=51 Edited January 22, 2014 by niconj Quote Link to comment Share on other sites More sharing options...
AdamR28 Posted January 22, 2014 Report Share Posted January 22, 2014 Any pics of setup? Where did you get the frame? Quote Link to comment Share on other sites More sharing options...
isitafox Posted January 22, 2014 Report Share Posted January 22, 2014 If your stays are 367 then you're between sizes though 18-14 should work at 368 and 1mm shouldn't make that much difference! Quote Link to comment Share on other sites More sharing options...
Greetings Posted January 22, 2014 Report Share Posted January 22, 2014 Any pics of setup? Where did you get the frame? Me. The frame dropouts look different to the ones narrowbars posted. I'm a bit baffled by this myself, would like to see some pics too. The CS seems to be between ~364 and 370. Quote Link to comment Share on other sites More sharing options...
isitafox Posted January 22, 2014 Report Share Posted January 22, 2014 That's the problem with Because doing about 18 different frames! 1 Quote Link to comment Share on other sites More sharing options...
niconj Posted January 22, 2014 Author Report Share Posted January 22, 2014 Here are some pictures. It doesn't look too bad but as I said, the clamping washer ist already 1-2mm over the frame and as soon as the chain lengthens, will be standing over way more. This might cause some problems. In the pic it is a 15t cog. Because 1 von niconj auf Flickr Because 2 von niconj auf Flickr Because 3 von niconj auf Flickr Quote Link to comment Share on other sites More sharing options...
isitafox Posted January 22, 2014 Report Share Posted January 22, 2014 What's weird is the website gives the cs length as 367mm and running 18-15 your stay will come out at either 365mm or 378mm neither of which that pic looks to be unless the 367mm is measured right to the very end of the dropout. Any chance you could measure it? EDIT: That looks like the kind of position the wheel should be in if you run 18-14??? Quote Link to comment Share on other sites More sharing options...
niconj Posted January 22, 2014 Author Report Share Posted January 22, 2014 (edited) 18/14 will put the washer way out or have the chain too short. How do I measure it w/o taking off the crank and stuff? Also, I don't mind running 18/15 (btw. the bike is sold like this on a couple of websites); will I be ok with a lengthened chain or not? Edited January 22, 2014 by niconj Quote Link to comment Share on other sites More sharing options...
isitafox Posted January 22, 2014 Report Share Posted January 22, 2014 Measure from the centre of the BB to the centre of the rear axle, cranks can stay on Quote Link to comment Share on other sites More sharing options...
AdamR28 Posted January 22, 2014 Report Share Posted January 22, 2014 Looks almost perfect to me with 18:15. The chain will stretch only a marginal amount, not enough to be a problem. Quote Link to comment Share on other sites More sharing options...
narrowbars Posted January 22, 2014 Report Share Posted January 22, 2014 Running 18-14t could you not just file the dropout to allow the wheel to go a bit further forward? Quote Link to comment Share on other sites More sharing options...
niconj Posted January 22, 2014 Author Report Share Posted January 22, 2014 (edited) Measure from the centre of the BB to the centre of the rear axle, cranks can stay on Will do. Running 18-14t could you not just file the dropout to allow the wheel to go a bit further forward? Doesn't work as the Magura pads would be over the lower edge of the rim. Looks almost perfect to me with 18:15. The chain will stretch only a marginal amount, not enough to be a problem. Are you sure? My previous K710 felt like a rubber band. Also, will I have to run the snail tensioners with those hope bolts? I am a fairly strong rider (not trials, but track bike) and don't want to retighten the bolts every other hour. Edited January 22, 2014 by niconj Quote Link to comment Share on other sites More sharing options...
AdamR28 Posted January 22, 2014 Report Share Posted January 22, 2014 Are you sure? My previous K710 felt like a rubber band. Yes, Z610HX is nothing like a K710. 1 Quote Link to comment Share on other sites More sharing options...
dezmtber Posted January 22, 2014 Report Share Posted January 22, 2014 I needed to use the snail cams on mine but yours is alloy so it may just work without. Quote Link to comment Share on other sites More sharing options...
niconj Posted January 22, 2014 Author Report Share Posted January 22, 2014 I needed to use the snail cams on mine but yours is alloy so it may just work without. The reason I'm asking is that the snail cams have a smooth surface and the Hope washers don't so it's snail cams holding hub at the cam bolts vs. serrated washers on both sides on the frame. Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.