Cycling and bicycle discussion forums. 
   Click here to join our community Log in to access your Control Panel  


Go Back   > >

Recumbent What IS that thing?! Recumbents may be odd looking, but they have many advantages over a "wedgie" bicycle. Discuss the in's and out's recumbent lifestyle in the recumbent forum.

Reply
 
Thread Tools Search this Thread
Old 10-19-09, 04:49 PM   #1
dogbitteneear
Senior Member
Thread Starter
 
Join Date: Mar 2005
Location: MIAMI, OK
Bikes: TE CLONE AND TE CLONE WITH JACKSHAFT
Posts: 119
largest gearring availble for lwb

I am trying to convert my lwb tour easy clone to a vehicle that can approach or exceed 35-40mph.
Any suggestion as how to do it?
dogbitteneear is offline   Reply With Quote
Old 10-19-09, 06:49 PM   #2
BlazingPedals
Senior Member
 
BlazingPedals's Avatar
 
Join Date: Dec 2004
Location: Middle of da Mitten
Bikes: Trek 7500, RANS V-Rex, Optima Baron, Velokraft NoCom, M-5 Carbon Highracer, homebuilt recumbent
Posts: 8,730
For 40 mph, all you need is standard gearing and a downhill -- with a 700c wheel, a 53/11 gear, and 110 rpm, you'll be at 41 mph. If you want to hold those speeds, you'll need a big motor, a bigger chainring, and a full hard-body fairing.
BlazingPedals is offline   Reply With Quote
Old 10-20-09, 03:38 AM   #3
Doug5150
Senior Member
 
Join Date: May 2005
Location: IL-USA
Bikes:
Posts: 1,659
Hostel Shoppe still sells the Vuelta chainrings, up to 60T. That causes other problems however, in that there's a limited range that a front derailleur can reach across, unless you rig up compound gearing somehow (two rear deraillers like on the Rotator Pursuit, or using a Schlumph drive crankset).

There's no easy methods for making good full-fairings I've ever seen, particularly for a two-wheel bike. For an easy-to-implement (and safer) fairing, you could just go with a front Zipper or Mueller and a body sock kit.

With this combo, you may not be able to get up to 40mph on level ground but you'd hit it pretty easily down hills.
~
Doug5150 is offline   Reply With Quote
Old 10-20-09, 05:48 AM   #4
BlazingPedals
Senior Member
 
BlazingPedals's Avatar
 
Join Date: Dec 2004
Location: Middle of da Mitten
Bikes: Trek 7500, RANS V-Rex, Optima Baron, Velokraft NoCom, M-5 Carbon Highracer, homebuilt recumbent
Posts: 8,730
Unless you're expecting to have a hill do all the work for you, hitting 40 mph, even with a full fairing, will require a significant output of watts. Speed ain't free.
BlazingPedals is offline   Reply With Quote
Old 10-20-09, 09:49 AM   #5
bobbycorno
Senior Member
 
bobbycorno's Avatar
 
Join Date: Sep 2007
Bikes:
Posts: 2,544
Quote:
Originally Posted by dogbitteneear View Post
I am trying to convert my lwb tour easy clone to a vehicle that can approach or exceed 35-40mph.
Any suggestion as how to do it?
1) Find a long (as in a few miles), steep hill.
2) Ride to the top.
3) Turn around and come back down. Don't touch the brakes.

You should hit 35-40 mph no sweat.

SP
Bend, OR
bobbycorno is offline   Reply With Quote
Old 10-22-09, 07:34 AM   #6
dogbitteneear
Senior Member
Thread Starter
 
Join Date: Mar 2005
Location: MIAMI, OK
Bikes: TE CLONE AND TE CLONE WITH JACKSHAFT
Posts: 119
fyi I have a tailbox on my bike(a version of andrew carson's diy recumbent Lwb). It has a clearance of about 10 inches for the 50 teeth gearring.
dogbitteneear is offline   Reply With Quote
Old 10-22-09, 07:43 AM   #7
gcottay
Senior Member
 
gcottay's Avatar
 
Join Date: Jul 2007
Location: Green Valley AZ
Bikes: Trice Q; Volae Century; TT 3.4
Posts: 3,772
Quote:
Originally Posted by dogbitteneear View Post
fyi I have a tailbox on my bike(a version of andrew carson's diy recumbent Lwb). It has a clearance of about 10 inches for the 50 teeth gearring.
Is there a sentence or two missing? With a human sitting there between the tail box and large ring ten inches of clearance between the two does not make sense.
gcottay is offline   Reply With Quote
Old 10-22-09, 05:14 PM   #8
aikigreg
Recumbent Ninja
 
Join Date: Jan 2005
Bikes:
Posts: 2,135
I know Dennis Grelk makes chainrings to order, CNC machined. I think he has the facilities to make up to a 100 tooth ring. How big are your quads?
aikigreg is offline   Reply With Quote
Old 10-25-09, 02:59 PM   #9
oddball
Senior Member
 
oddball's Avatar
 
Join Date: Jul 2008
Location: Puyallup WA US (near Seattle)
Bikes: Bacchetta Giro 20, Specialized Roubaix, Kona Jake the Snake, Cannondale Super V, Electra Straight 8
Posts: 90
Schlumpf Speed Drive or High Speed Drive. http://www.schlumpf.ch/antriebe_engl.htm
How big a gear you want?
oddball is offline   Reply With Quote
Old 10-26-09, 04:32 PM   #10
dogbitteneear
Senior Member
Thread Starter
 
Join Date: Mar 2005
Location: MIAMI, OK
Bikes: TE CLONE AND TE CLONE WITH JACKSHAFT
Posts: 119
I'm currently looking at either Hostel shoppe gearring supply or Raptobike. Either have a decent supply of gearrings. I may need a 130 bcd crank arm. Any advise?
dogbitteneear is offline   Reply With Quote
Old 10-27-09, 10:46 PM   #11
Jeff Wills
Insane Bicycle Mechanic
 
Jeff Wills's Avatar
 
Join Date: Mar 2008
Location: other Vancouver
Bikes:
Posts: 7,893
Quote:
Originally Posted by dogbitteneear View Post
I'm currently looking at either Hostel shoppe gearring supply or Raptobike. Either have a decent supply of gearrings. I may need a 130 bcd crank arm. Any advise?
130mm BCD is the road "standard". Any Shimano road crankarm made since the 70's will work.
__________________
Jeff Wills

Comcast nuked my web page. It will return soon..
Jeff Wills is offline   Reply With Quote
Old 10-28-09, 05:42 AM   #12
BlazingPedals
Senior Member
 
BlazingPedals's Avatar
 
Join Date: Dec 2004
Location: Middle of da Mitten
Bikes: Trek 7500, RANS V-Rex, Optima Baron, Velokraft NoCom, M-5 Carbon Highracer, homebuilt recumbent
Posts: 8,730
Quote:
Originally Posted by Jeff Wills View Post
130mm BCD is the road "standard". Any Shimano road crankarm made since the 70's will work.
Almost. The key word being "standard." Compacts are 110mm BCD.
BlazingPedals is offline   Reply With Quote
Old 10-28-09, 11:29 PM   #13
Jeff Wills
Insane Bicycle Mechanic
 
Jeff Wills's Avatar
 
Join Date: Mar 2008
Location: other Vancouver
Bikes:
Posts: 7,893
Quote:
Originally Posted by BlazingPedals View Post
Almost. The key word being "standard." Compacts are 110mm BCD.
I love standards- there's one for everyone!
__________________
Jeff Wills

Comcast nuked my web page. It will return soon..
Jeff Wills is offline   Reply With Quote
Old 10-29-09, 04:02 AM   #14
charly17201
Senior Member
 
charly17201's Avatar
 
Join Date: Jan 2008
Location: Tulsa
Bikes: RANS Formula LE, Giant Escape 1
Posts: 583
When I saw this pic I thought of this thread.....

http://farm3.static.flickr.com/2597/...7ef796f0_o.jpg

That chain ring is HUGE. Just totally impractical for your application I'd think.
charly17201 is offline   Reply With Quote
Old 10-29-09, 05:38 PM   #15
dogbitteneear
Senior Member
Thread Starter
 
Join Date: Mar 2005
Location: MIAMI, OK
Bikes: TE CLONE AND TE CLONE WITH JACKSHAFT
Posts: 119
FYI My tour easy clone (with a tiller and tailbox)wheel base is 66". that does not include front part of
tire to tailbox end. O-----O >
dogbitteneear is offline   Reply With Quote
Reply


Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off



All times are GMT -6. The time now is 10:48 AM.