3 or 8 speed conversion Trek pure aluminum trike

[davefrommd]

I have a single speed trek pure aluminum trike and know some previous models were sturmey archer 3 speed. I really want to add a 8 speed and if not possible 3 speed. am also considering the nuvinchi N360. Wish someone could tell me which model # will work. I have 5.75" inside diameter to work with. I want something durable and reliable. Any help or advice would be greatly appreciated.

[nfmisso]

The critical dimension is the O.L.D. of the hub. http://www.sheldonbrown.com/gloss_n-o.html#old

Standard sizes now are 130mm and 135mm - you need to measure your current hub and get the same , then build up a new wheel.

[davefrommd]

I was looking for an internal 3 to 8 speed hub. I need the hub to have 2 sprockets as that is what is on my trike now. I would prefer an 8 speed if possible. Just not sure which model hub to choose. 135mm would fit as it is 5.4", under the 5.75 I measured.

[nfmisso]

You are going to have to provide us with some detailed pictures of the rear hub area to assist you on this. The drive train for trikes is a bit different from bicycles.

[davefrommd]

My trike is a 3 wheel with one solid 5/8" keyed rear axle. I would prefer an 8 speed hub however a 5 or 3 speed hub would work. I need an internal hub with 2 sprockets. I enclosed a pic of a trike with a 3 speed hub. Mine has one single axle as the picture shows 2 axles.

[Cindy74]

I have exactly the same question. I am trying to buy a single speed Trek Pure Trike but don't want to buy it if I can't have at least 3 speeds. Looking for help. I have the Trek part number for the hub but it has been discontinued. Have no way to cross reference. It is Trek #291164 but I don't think that helps much. Any help would be appreciated.

[xerxes]

I found this picture:



The drive train looks to be very non-standard and probably difficult to alter or adapt.

[Cindy74]

That's the one. The bike shop I am getting it from says they can do it. I have my doubts which is why I am running around trying to make sure or see what I can do if they can't.

That picture BTW amazes me. I wouldn't want to be that hard on the frame of a trike.

[Cindy74]

The Torker conversion kit works on this bike. I had it done. Now I have another dilemma: Trek is NOT supporting these trikes even though I just bought it. Im furious. What would I do should the axle breaks. I cant even find the part number.

[Bill]

An idea look on auction sites using the keyword to the part you are looking for. Some do put the part number in with the description and some don't.

[paratri-er]

I just found this site and this thread. I currently have a Trek Pure Trike that has had a 5 speed Sturmy-Archer hub added to it. I also put road slick tires on it and a lower handlebar, road bike seat and spd pedals. My coach is building me a lighter, more stable trike that will be more suited to racing (I do triathlons), so I would be interested in selling this one. If anyone here is interested, or knows someone who would be interested, you can pm me. I am including a picture of it. The original tires, handlebars, pedals and saddle are still available if you prefer them.

[Bill]

Nice looking trike. I have a Schwinn Meridian Adult Trike. I was going to mod the single speed to a 3speed, but I really never got any answers that I needed so I just abandoned the idea. Was also looking at trying to change the front single crankset to a 3ring system as well as putting a 5-6-7spd freewheel system on the back but lol it was a pipe dream!