Adult Tricycle Differential
10-16-17, 11:37 AM
#26
Banned
Rear would have 2 axles 1 for the wheels, the other for the drive shaft that would turn the freewheels on its ends
and have 2 short chains to fixed gear hubs..
like they did on cars in the Victorian era...
NB: there are a few left hand threaded freewheels .
driving a simply flipped over RH one would unscrew with power applied..
regular hubs, just have driven gear to the right of the rim, like on a bike.
weld up the frame to support both ends of the axle, maybe bodge 2 bike frames to be working the drive.
....
and have 2 short chains to fixed gear hubs..
like they did on cars in the Victorian era...
NB: there are a few left hand threaded freewheels .
driving a simply flipped over RH one would unscrew with power applied..
regular hubs, just have driven gear to the right of the rim, like on a bike.
weld up the frame to support both ends of the axle, maybe bodge 2 bike frames to be working the drive.
....
Last edited by fietsbob; 10-18-17 at 09:48 AM.
10-18-17, 09:23 AM
#27
Senior Member
Join Date: Nov 2008
Location: South Jersey
Posts: 1,959
Bikes: Too many Bicycles to list
Mentioned: 10 Post(s)
Tagged: 0 Thread(s)
Quoted: 90 Post(s)
Liked 137 Times
in
45 Posts
While I have seen Diffs listed for trikes in the past I have not lately. You can look at some Lawn Mower supply places or local Small engine repair shops for something that would work. Back in the 70's & 80's small Riding mowers were built using them some with axles as small as 5/8" dia and some had sprockets that worked with singe speed 1/8" chains on their drive sprockets.
Glenn
Glenn
10-18-17, 02:06 PM
#28
Senior Member
Join Date: May 2005
Location: IL-USA
Posts: 1,859
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 111 Post(s)
Likes: 0
Liked 5 Times
in
5 Posts
... However, it should be noted that having two wheel driven in the rear is not really necessary if the wheels are on solid floors or pavement. Usually, having a single driven wheel with a freewheeling one is enough. That's why Samagaga also provides an "easy turn" gear system.
SAMAGAGA
SAMAGAGA
For example--in the case of a delta trike, where you want to turn so sharp that the trike basically pivots on one of the rear wheels, and one rear wheel doesn't really spin at all. For a trike that is used in confined spaces or at slow speeds, you end up doing these kinds of turns a lot--and not being able to do them becomes a major annoyance.
A differential can do that, but a double-freewheel axle can't.
And a single-drive rear wheel can only turn one-way (either left or right, which ever is opposite the drive-wheel side, but it won't let you turn both left and right).
Double-freewheel axles work much better well for off-road or slippery-surface use but a real bicycle differential is still better for high maneuverability on solid ground.
Likes For Doug5150:
10-18-17, 02:41 PM
#29
Banned
OK Doug I suspect the guy wants us to search the internet for him and offer a link, it happens a lot
10-23-17, 05:31 PM
#31
Senior Member
Join Date: Feb 2015
Location: Mission Viejo
Posts: 5,805
Bikes: 1986 Cannondale SR400 (Flat bar commuter), 1988 Cannondale Criterium XTR, 1992 Serotta T-Max, 1995 Trek 970
Mentioned: 20 Post(s)
Tagged: 0 Thread(s)
Quoted: 1943 Post(s)
Liked 2,164 Times
in
1,323 Posts
As you move forward on this you may want to incorporate an electronic peddle assist and steering. I can see steering being a bigger issue since it is done by adjusting the speed/direction of one of the rear wheels.
John
John
Thread
Thread Starter
Forum
Replies
Last Post
elizilla
Adaptive Cycling: Handcycles, Amputee Adaptation, Visual Impairment, and Other Needs
14
05-22-23 02:25 PM
