Kepler wrote:Decided it was time to fit the derailleur to the Fighter. Not too difficult to do but there were a few things that should be pointed out.
Glad to see more people doing this now. I think it's worth the extra hassles involved for the added flexibility a derailleur allows. Especially once the batteries run out.
Not sure on the details of how mine was setup, Voicecoils did a great job of getting it all up and running for me.
Kepler wrote:The cluster on this bike is an 8 speed 11-32 and with such a large first gear, I figured l should use a long cage derailleur to deal with large chain wrap. Mechanically this worked out well with no problems selecting all 8 gears. However, I think I will probably change this out for a short cage in the future just to improve ground clearance and overall look.
Mine is a 7 speed, with a long cage also. Voicecoils recently removed an extra couple of chain links for me to prevent chain hop (top and bottom gears), and this also means the cage doesn't hang quite so low when in top gear. Might be something you can also do?
Kepler wrote:Another issue I came up against was that the hanger was fitted quite far back on the swingarm. This caused the chain wrap not to be adequate especially on the 11 tooth. The fix for this was to move the wheel back as far as possible in the swing arm. Once this was done, I could stand on the pedals as hard as I could on the 11 tooth.
The hanger on mine was too far back as well I think...Voicecoils can confirm, but he managed to work around it. What's the symptom's seen when there's not enough chain wrap? I haven't seen any chain slippage on my 11T.
Kepler wrote:Shifter is a cheap Sunrace 8 speed twist shifter on the lefthand side of the bike. This is actually mounted in the inverted position as its designed to go on the righthand side. However I quite like it as you wind the shifter towards you to shift up. Kind of like twisting the throttle to go faster.
Mine's a Microshift. Nice and slim..works well, and I even managed to slip my wires for my power limit button underneath it the other day.
Kepler wrote:I think I may have some issues with loosing the chain off the chain ring but will look more closely at this if the problem arrises.
Yeah, so as mentioned, this was an issue for me...I've yet to confirm if removing the couple of chain links has eliminated this, but so far so good. I was seeing the chain come off both the front chain ring (both sides) and the rear cluster (both sides). One of the other issues I had was the chain would get sucked in between the tire and swingarm on large bumps. A quick jolt of the pedals seemed to sort this out and snap the chain back up. Since remounting the rear wheel in a different position it doesn't seem to be an issue any more though.
My main issue with the chain coming off was when shifting down to 7th (11T) too fast or hitting a bump and having the chain skip onto the axle next to the 11T cog. I would be ok with it if I could just shift back up to get the chain back onto the gears, but it doesn't catch even when I shift all the way up. I'm thinking I might kill 2 birds with one stone and utilize Cruzxia's clamp solution
to clamp the axle and help stop the chian from dropping so low down when it comes off the 11T. What do you think?
Another issue that's just cropped up this morning is the chain ring guard (again) seems to close to the chain ring. My chains hitting/rubbing it quite badly...I'm gonna have to attack it with a spanner again to bend it out.