The new FSA Patterson front shift crankset that gives
a 1.6 multiplication using planetary gears.
http://pattersonbike.com/products/
Alternative to the Schlumf Mountain Drive?
- rifraf
- Posts: 3851
- Joined: Fri Apr 15, 2011 5:55 pm
- Location: Two Rocks, WA
Alternative to the Schlumf Mountain Drive?
Postby rifraf » Tue Feb 14, 2012 11:04 am
Surly Ogre, Extrawheel trailer.
-
- Posts: 5470
- Joined: Mon Mar 12, 2007 2:23 pm
- Location: Yangebup
Re: Alternative to the Schlumf Mountain Drive?
Postby Baalzamon » Tue Feb 14, 2012 11:49 am
And a damn sight cheaper as well. I was considering a Schlumpf drive for my Thorn, but after looking at gearing I found I would only get 4 new gears (AT) $200 each. No way was I prepared to shell out for that especially since the new gears were the higher gears. But the 28t chainring does undercut rohloff specs nicely as well so not an option either for me.
Masi Speciale CX 2008 - Brooks B17 special saddle, Garmin Edge 810
- rifraf
- Posts: 3851
- Joined: Fri Apr 15, 2011 5:55 pm
- Location: Two Rocks, WA
Re: Alternative to the Schlumf Mountain Drive?
Postby rifraf » Tue Feb 14, 2012 12:00 pm
A rider from another forum recently wrote to ask about different chain ring optionsBaalzamon wrote:And a damn sight cheaper as well. I was considering a Schlumpf drive for my Thorn, but after looking at gearing I found I would only get 4 new gears (AT) $200 each. No way was I prepared to shell out for that especially since the new gears were the higher gears. But the 28t chainring does undercut rohloff specs nicely as well so not an option either for me.
Response:
"It may be a while before the factory in Taiwan tools up larger CRs, but I may
be able to get some made locally if I can consolidate requests.
What size(s) do you think would be best?
I can't promise when they might be available, but I am working on it.
I designed the spline / snapring mounting system to allow easy removal and
replacement of various CRs.
Thankyou very much for your interest!!!"
Reply:
"I told him a 39 or 40 tooth would likely work ."
Surly Ogre, Extrawheel trailer.
- rifraf
- Posts: 3851
- Joined: Fri Apr 15, 2011 5:55 pm
- Location: Two Rocks, WA
Re: Alternative to the Schlumf Mountain Drive?
Postby rifraf » Fri Feb 17, 2012 1:33 pm
Someone pointed out an interesting (IMHO) review of the Patterson Transmission
http://www.bicycletimesmag.com/content/ ... ansmission
Theres some great pics!
http://www.bicycletimesmag.com/content/ ... ansmission
Theres some great pics!
Surly Ogre, Extrawheel trailer.
-
- Posts: 56
- Joined: Tue May 22, 2007 1:10 pm
Re: Alternative to the Schlumf Mountain Drive?
Postby icicic » Fri Jun 22, 2018 10:14 am
Baalzamon wrote:And a damn sight cheaper as well. I was considering a Schlumpf drive for my Thorn, but after looking at gearing I found I would only get 4 new gears (AT) $200 each. No way was I prepared to shell out for that especially since the new gears were the higher gears. But the 28t chainring does undercut rohloff specs nicely as well so not an option either for me.
Hey Baalzamon,
I've also been thinking about pairing a Schlumpf Drive with my Rohloff, on a heavy duty cargo bike. Thanks for this info. What do you mean though re undercutting "rohloff specs"
Cheers,
Rik
- rifraf
- Posts: 3851
- Joined: Fri Apr 15, 2011 5:55 pm
- Location: Two Rocks, WA
Re: Alternative to the Schlumf Mountain Drive?
Postby rifraf » Sun Nov 11, 2018 3:26 pm
I suspect that Baalzamon was referring to the specs for Rohloff hubs back in 2012 back when this thread was started was along the lines of a minimum 40T ring for the 16T sprocket if memory serves.icicic wrote:Baalzamon wrote:And a damn sight cheaper as well. I was considering a Schlumpf drive for my Thorn, but after looking at gearing I found I would only get 4 new gears (AT) $200 each. No way was I prepared to shell out for that especially since the new gears were the higher gears. But the 28t chainring does undercut rohloff specs nicely as well so not an option either for me.
Hey Baalzamon,
I've also been thinking about pairing a Schlumpf Drive with my Rohloff, on a heavy duty cargo bike. Thanks for this info. What do you mean though re undercutting "rohloff specs"
Cheers,
Rik
This was adjusted to the present standards of 34T/18T, I think RonK mentioned with the advent of 29ers.
https://www.rohloff.de/fileadmin/user_u ... _en_fr.pdf
Torque is the enemy of IGH's and often sited as the reasons for their failure, indeed Rohloff offer two acceptable minimum ratios with the lower one being suitable for riders under 100kg.
Not sure if it helps but you can find the various Schlumph manuals here: http://www.schlumpfdrive.com/index.php/ ... s-243.html
Surly Ogre, Extrawheel trailer.
-
- Posts: 5470
- Joined: Mon Mar 12, 2007 2:23 pm
- Location: Yangebup
Re: Alternative to the Schlumf Mountain Drive?
Postby Baalzamon » Mon Nov 12, 2018 9:12 am
WOW old thread revival here.
Never happened, but there are trikes out there with rohloffs and schlumph, just need to get the ratios right for torque as rifraf stated
Never happened, but there are trikes out there with rohloffs and schlumph, just need to get the ratios right for torque as rifraf stated
Masi Speciale CX 2008 - Brooks B17 special saddle, Garmin Edge 810
Jump to
- General Australian Cycling Topics
- Info / announcements
- Buying a bike / parts
- General Cycling Discussion
- The Bike Shed
- Cycling Health
- Cycling Safety and Advocacy
- Women's Cycling
- Bike & Gear Reviews
- Cycling Trade
- Stolen Bikes
- Bicycle FAQs
- The Market Place
- Member to Member Bike and Gear Sales
- Want to Buy, Group Buy, Swap
- My Bikes or Gear Elsewhere
- Serious Biking
- Audax / Randonneuring
- Retro biking
- Commuting
- MTB
- Recumbents
- Fixed Gear/ Single Speed
- Track
- Electric Bicycles
- Cyclocross and Gravel Grinding
- Dragsters / Lowriders / Cruisers
- Children's Bikes
- Cargo Bikes and Utility Cycling
- Road Racing
- Road Biking
- Training
- Time Trial
- Triathlon
- International and National Tours and Events
- Cycle Touring
- Touring Australia
- Touring Overseas
- Touring Bikes and Equipment
- Australia
- Western Australia
- New South Wales
- Queensland
- South Australia
- Victoria
- ACT
- Tasmania
- Northern Territory
- Country & Regional
Who is online
Users browsing this forum: No registered users
- All times are UTC+10:00
- Top
- Delete cookies
About the Australian Cycling Forums
The Australian Cycling Forums is a welcoming community where you can ask questions and talk about the type of bikes and cycling topics you like.
Bicycles Network Australia
Forum Information
Connect with BNA
Brought to you by Bicycles Network Australia | © 1999 - 2024 | Powered by phpBB ®
This website uses affiliate links to retail platforms including ebay, amazon, proviz and ribble.
This website uses affiliate links to retail platforms including ebay, amazon, proviz and ribble.