Grubee gt2 multi-speed?

S

shepdiesel

New Member
So I have been drooling over the Grubee gt2 bicycle for a few months now and have finally convinced my wife to let me get one. My only question is can you get them in a multi-speed or convert them to a multi-speed? What I really want to do is switch both hubs over to halo spin doctor disc hubs and get a jack shaft to run off the multi-speed. so does anyone know if this will work?
thanks
 
Blowbyu says "Sold Out" . Pirate says "Sold Out". If you know better, please let me know. I want a GT-2 , but looks like no more are available . As soon as I can, I am going to take a GT-1 .
 
The short answer is "No", but people seldom settle for the short answer on this forum so let's put it this way...

The problem you will have to overcome is the width between the drop outs. It's designed for single speed hubs, or for internally geared hubs, which are the same width. In short, it's NOT designed to accept hubs that run traditional multi-speed cassettes.

Now, that said, several people I've read about have successfully "encourages" the rear triangles on other bikes to widen to accept these hubs and there's no reason to think this cannot be done with a GT2 frame.....

Well, ok, one other issue, you'll have to find a way to mount a derailleur. It's not designed for one so you'll have to get inventive, but it probably can be done. Take a look at the frame photos at Grubee's site to get an idea what you're in for.
 
If you use a nuvinci hub, perhaps the spacing issue with multi-speed cassettes would not be a problem?
 
i remember a thread where a guy had a GT-2 crack on him after 3 weeks, he was not a happy camper.

tried finding the thread but i couldn't come up with it.
 
I believe that thread was about the stem (handlebar mount) cracking. I've got hundreds of miles on mine with no problems. I even hand a basket off the handlebars to haul groceries in. I suspect in his case the bike was mistreated a little.
 
Just received yesterday, a GT1 I ordered from "Pirate" on Tuesday. Opened it today, low and behold, it is a GT2. Not too disappointed. Martin 1940D28.
 
You can use one of these types of derailleur.
Can be used on almost any drop out and all it uses a grove of the drop outs to stay aligned.
I use them all the time as chain tensioners, but it can be easily used as a normal derailleur.
 

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AslansMonkey said:
The short answer is "No", but people seldom settle for the short answer on this forum so let's put it this way...

The problem you will have to overcome is the width between the drop outs. It's designed for single speed hubs, or for internally geared hubs, which are the same width. In short, it's NOT designed to accept hubs that run traditional multi-speed cassettes.

Now, that said, several people I've read about have successfully "encourages" the rear triangles on other bikes to widen to accept these hubs and there's no reason to think this cannot be done with a GT2 frame.....

Well, ok, one other issue, you'll have to find a way to mount a derailleur. It's not designed for one so you'll have to get inventive, but it probably can be done. Take a look at the frame photos at Grubee's site to get an idea what you're in for.
Click to expand...

the GT2 is 135mm. you must use a multi gear casette hub if you do not use the surly SS hub, or ther grube hub.
 
im using a gt2a-s frame with multigear setup. my derailer in the back is an adaptor for the drop outs and im running 7 gears. I know there is a youtube video of a guy running the same frame with a jackshaft kit with a derailer adaptor in the back as well.
 
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