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Old 11-09-07, 02:31 AM   #1
yamcha
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Dahon Vitessi 8 spd internal hub conversion

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?
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Old 11-09-07, 07:56 AM   #2
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Find out the length of the rear triangle before you do anything. Then come back and post your findings.
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Old 11-09-07, 11:29 AM   #3
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Quote:
Originally Posted by yamcha View Post
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?

When I was in the market for my first folder, I had a choice between a Piccolo, Boardwalk D6 and S1, or a Vitesse D3. I chose the Boardwalk S1 since the bike's frame is made of steel and I can open up or close in the rear dropouts to whatever the size of the internal hub I chose. I did that and here is the finsihed product:

http://www.flickr.com/photos/world-of-folding-bicycles/265102674/in/set-72157594461421431/

The Vitesse model line, being made of aluminum, must have the bike part perfectly match the size of the dropout. You cannot modify or "cold set" the frame like that or it will fail on you. For more information on this topic see Sheldon Brown's web page:

http://www.sheldonbrown.com/frame-spacing.html

Last edited by folder fanatic; 11-09-07 at 11:36 AM.
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Old 11-09-07, 11:31 AM   #4
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The LBI guy who put on the Shimano 3spd on my Boardwalk said he could do it no problem.
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Old 11-09-07, 11:38 AM   #5
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The LBI guy who put on the Shimano 3spd on my Boardwalk said he could do it no problem.
Saying it and actually doing it are two different things. I would proceed with caution here. Now I think people will see why I tend to chose steel over aluminum.
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Old 11-09-07, 12:16 PM   #6
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Saying it and actually doing it are two different things. I would proceed with caution here. Now I think people will see why I tend to chose steel over aluminum.
Assuming that it can be done, what do you think?
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Old 11-09-07, 03:09 PM   #7
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I wouldn't change the rear triangle spacing of an aluminum bike. What is the spacing on there now?

I did convert a Tikit over to a 7sp SRAM internal hub (and drum brake) a few weeks ago. I think internal hubs are great, and they are a natural fit for folders. In a year (hopefully the i9 is available by then) I expect that my only bike without an internal hub will be my tandem.
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Old 11-09-07, 05:56 PM   #8
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Originally Posted by yamcha View Post
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.

Have fun,
Bruce
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Old 11-09-07, 09:42 PM   #9
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Thanks Bruce. The reason I want an internal hub is because it is less maintenance in general and that it shifts better and can be shifted while stopped. I think a simple chain tensioner wouldn't be a big deal.
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