Patterson Transmission

[Night Train]

Any thoughts about the Patterson Transmission two speed chain ring?

 

[Rickshaw Phil]

I like the look of that. Especially as they say it will fit any bike with a standard 68mm bottom bracket.

I've been daydreaming lately about building up a bike with 700c wheels and a Sturmey Archer 8 speed. Combine my spec with this device and it gives a potential gear spread of 30 to 157 gear inches. Perhaps better for a fast recumbent.

 

[deptfordmarmoset]

I'm not sure how it works after looking at the site. Does it work like hub gears at the rear so that front ring turns faster than you're actually pedalling when you shift down?

 

[Rickshaw Phil]

I'm not sure how it works after looking at the site. Does it work like hub gears at the rear so that front ring turns faster than you're actually pedalling when you shift down?

I believe so. It's an epicyclic gearbox, the same as a hub gear, and selecting high range gives an overdrive of 1.6:1 according to their info.

 

[Night Train]

I like the look of that. Especially as they say it will fit any bike with a standard 68mm bottom bracket.

I've been daydreaming lately about building up a bike with 700c wheels and a Sturmey Archer 8 speed. Combine my spec with this device and it gives a potential gear spread of 30 to 157 gear inches. Perhaps better for a fast recumbent.

This is what I had in mind.
I have looked at the Schlumpf Speed and Mountain drives but I have tried and don't like the ankle kick button to change gear.

The Patterson cable gear change looks easier to use and has a more sleek look to it. I think it might also be cheaper, even when imported from the US.

 

[StuAff]

I'd heard of this before, does have one or two advantages over the Schlumpf- not least price. Apparently the chainrings can be changed, so though there's no choice when you buy it, you could fit a different size ring.

 

[Rickshaw Phil]

The Patterson cable gear change looks easier to use and has a more sleek look to it. I think it might also be cheaper, even when imported from the US.

Any idea what sort of cost it might be? I don't see that info on the site.

 

[Night Train]

Any idea what sort of cost it might be? I don't see that info on the site.

http://pattersonbike.com/products-page/
The order page says $299.

 

[mickle]

Weird. Didn't the SRAM FSA group already have a two speed epicyclic unit almost identical in spec to this but targeted at the heavy duty off-road crowd?

 

[Rickshaw Phil]

http://pattersonbike.com/products-page/
The order page says $299.

Thanks for that. I must be blind - never saw that page.

 

[mickle]

28t to 45t ??

 

[Night Train]

Prices look good in Ebay US.
http://www.ebay.co.uk/sch/m.html?_n...m=350592993944&_osacat=0&_ssn=cycleclubsports

 

[RecordAceFromNew]

Some interesting comments and replies from the inventor here.

 

[andrew_s]

Weird. Didn't the SRAM FSA group already have a two speed epicyclic unit almost identical in spec to this but targeted at the heavy duty off-road crowd?

The Truvativ Hammerschmidt
Also cable operated, also 1.6:1 overdrive, introduced about 2008

 

[Night Train]

Spendy! $668!