The steered-box type of trike does work for a fair number of situations, but it can present problems for people that have to ride in traffic outside small neighborhoods (especially on poorly maintained roads), depending on the area, because of maneuverability.
Have you considered building the long low delta types, like my SB Cruiser and the new trike I'm building for my brother? (and like Ddk's trikes)
They're simple designs, easy to build, easy to ride. Could be made better (some of which would make them more complicated).
As I noted above, they handle well, and (especially with their sunshade canopy) they are also high enough they can be seen in traffic (unlike a number of lower stable trikes). They don't need to be ridden "fast" but at least they can be (20MPH is all the SBC is tested to; it's fast enough for most of the streets I have to ride on).
They could be built a lot lighter if built out of good steel instead of the recycled junk I use, but the weight (down low) helps to keep them on the ground in corners at faster speeds (since I ride in traffic, the quicker I can get out of the way of people not turning with me, the safer I am).
The ones I build are compromises that aren't specifically designed around being pedalled, but they are perfectly capable of that, too. I just don't much because of joint problems (and the heat here). Instead, they are designed around carrying the cargo (or dogs), primarily, and handling well enough at up to 20MPH (the limit here) to be able to avoid potholes, debris, pedestrians stepping off the sidewalk in the middle of the street, cars suddenly pulling out of driveways or changing lanes with no signal, etc. So they don't use a bicycle saddle, but they could easily be built with one instead of the bench seat or powerchair seat presently in use on them.
The new one should be better than the old one (bigger wheels, better ride, lower deck, better stability with narrower track).
Some pics, if interested:
https://endless-sphere.com/forums/viewtopic.php?f=2&t=67833&start=525#p1310509
https://endless-sphere.com/forums/viewtopic.php?f=2&t=80951&start=25#p1328327
Have you considered building the long low delta types, like my SB Cruiser and the new trike I'm building for my brother? (and like Ddk's trikes)
They're simple designs, easy to build, easy to ride. Could be made better (some of which would make them more complicated).
As I noted above, they handle well, and (especially with their sunshade canopy) they are also high enough they can be seen in traffic (unlike a number of lower stable trikes). They don't need to be ridden "fast" but at least they can be (20MPH is all the SBC is tested to; it's fast enough for most of the streets I have to ride on).
They could be built a lot lighter if built out of good steel instead of the recycled junk I use, but the weight (down low) helps to keep them on the ground in corners at faster speeds (since I ride in traffic, the quicker I can get out of the way of people not turning with me, the safer I am).
The ones I build are compromises that aren't specifically designed around being pedalled, but they are perfectly capable of that, too. I just don't much because of joint problems (and the heat here). Instead, they are designed around carrying the cargo (or dogs), primarily, and handling well enough at up to 20MPH (the limit here) to be able to avoid potholes, debris, pedestrians stepping off the sidewalk in the middle of the street, cars suddenly pulling out of driveways or changing lanes with no signal, etc. So they don't use a bicycle saddle, but they could easily be built with one instead of the bench seat or powerchair seat presently in use on them.
The new one should be better than the old one (bigger wheels, better ride, lower deck, better stability with narrower track).
Some pics, if interested:
https://endless-sphere.com/forums/viewtopic.php?f=2&t=67833&start=525#p1310509
https://endless-sphere.com/forums/viewtopic.php?f=2&t=80951&start=25#p1328327
