Sirocco CDL chain too loose?

[crE]

https://docs.google.com/file/d/0BztB4N7mO2y9RWNPQmxlWFJEeEE/edit?usp=docslist_api

See video. Does this chain look too loose to you?

I've pretty much nailed the rattling sound to the chain. I took the chain guard off which helped a little. But the chain appears to still be knocking against the frame...

Is the derailleur in the correct position and moving ok?

 

[RobF]

Looks OK to me.

The chain can slap against the chainstay when going over bumps, which is why some people fit a chainstay protector:

https://www.google.co.uk/search?q=chainstay+protector&client=firefox-a&hs=b8q&rls=org.mozilla:en-GB:official&channel=fflb&tbm=isch&imgil=rMT90AKovP3uQM%3A%3BOT3Je4iv6zmS0M%3Bhttp%253A%252F%252Fwww.mbr.co.uk%252Freviews%252Fproducts%252Fcsixx-chainstay-protector-review%252F&source=iu&pf=m&fir=rMT90AKovP3uQM%3A%2COT3Je4iv6zmS0M%2C_&usg=__1g-DVueqKs9278o7KHBOT499ZgA=&biw=1090&bih=557&ved=0CF0Qyjc&ei=GPcRVLq3MLCI7Abm24DgCg#facrc=_&imgdii=_&imgrc=rMT90AKovP3uQM%3A;OT3Je4iv6zmS0M;http%3A%2F%2Fwww.mbr.co.uk%2Fwp-content%2Fuploads%2Fsites%2F11%2F2012%2F11%2FC-Six-chainstay-protector.jpg;http%3A%2F%2Fwww.mbr.co.uk%2Freviews%2Fproducts%2Fcsixx-chainstay-protector-review%2F;1024;683

 

[trex]

looks OK to me too.
Do you have problem changing gears?

 

[crE]

Not really. Sometimes when climbing a hill. But I've learnt to stop pedalling for a second change, then commence pedalling. Works great.

 

[crE]

On occasion when I've mistimed or forgotten to use this technique I will get a clunky gear change

 

[trex]

As long as the chain runs smoothly over each and everyone of the rear cogs after you change gear, there is nothing to worry about. Put a few drops of oil or Lithium grease on the chain if it feels dry.
I read in another thread that your battery seems to rattle a bit. Try putting a couple of large elastic bands, going under the battery then over the rear end of the rack, in effect strapping the rear of the battery to the rack. That may stop the rear of the battery flapping about when riding over uneven surface. Put some Lithium grease around the front part of the battery that is engaged inside the controller box and also over the plastic rail that the battery slides on when you pull out the battery, that should also help eliminating rattling.

 

[crE]

Thanks Trex. I don't think it is the battery. It's very tight in place and after a few drop tests on the back wheel it doesn't seem to budge. I'm 95.76% sure it's the chain

I may invest in a chainstay protector!

 

[trex]

you can increase the chain tension a little by tightening the 'B' screw on your derailleur - give it about a turn, clockwise.

http://www.parktool.com/blog/repair-help/rear-derailler-adjustments-derailleur

 

[crE]

Thanks Trex. I did that this morning and the chain rattle has decreased massively! I have a cheap chainstay guard on order too to hopefully eliminate the issue entirely.