Join Date: Aug 2005
Location: San Rafael, California
Originally Posted by yamcha
I am thinking about converting my Vitessi D7's crappy Neos Derailer with a Shimano Nexus 8 spd hub. What do you guys thinkg? Yes or no?
Nope, bad idea. Here's what you'll encounter using a Nexus 8spd. You have vertical dropouts so you won't be able to adjust chaintension accurately.. unless you do what I have done in the past (and Alex with his Tikit), which is to select the 'magic chainring and sprocket combo', you'll either have a chain way too tight or way too loose... you can add a chaintensioner like the Singulator, but you're kind of defeating the purpose of having a hub gear if you introduce another gear and heavy duty spring into the mix, not to mention another dangly part hanging down.. if you use the 'magic combo' as the chain wears you will not be able to take up the slack... big deal? who knows, but not as nice as being able to make minute adjustments as needed......
The other thing you'll find is that the cable routing will not be as clean using vertical drops.. the arm of the Shimano will kind of want to be in either the 11:00 or 5:00 position because of the anti-rotation washers .. note the difference in cable routing for my XP and my Xootr Swift... since the XP pic, I've converted back to 9spd with a SRAM X-9 short cage derailleur. Using a bike with horizontal drops (like the Xootr) you also can easily change rear sprockets to obtain the perfect ratio for your riding style.. I originally had a 19t sprocket on the Xootr, after riding it around for a couple of weeks I decided that I wanted to up the gear ratio a bit to stay in the most efficient gears (5 and 6) most of the time, so on went an 18t sprocket... no need to add links, just move the wheel back a bit to get proper chain tension again.
So my advice (such as it is) would be to find out why the Neos derailleur/cable/shifter is not performing (clean, service, adjust, unbend, whatever it takes), as it is a fine unit and should work great.. if you absolutely hate it, then get a derailleur hanger and install whichever derailleur you like.