Thanks for your replies Lee and stacebg, sorry for my delay.
The stability isn't an issue, a reasonably tight center of mass located not far in front of the rear wheels, and a low center of gravity will offer stability - it's all about leverage.
But as things go, computer 3Ds are one thing, building the real thing is another, and a tandem trike is easier to build with resources to hand. I have started the frame and getting that side of it sorted, some frame pictures in a few days.
I have been playing with the exterior design as well, of course it's just simple 3D stuff. I'll just grab some screenshots ...
Accessibility for rider and passenger ..... quiz the owners of the Stallion by MotorTrike.
I have found that getting into one is much easier than getting out of one for both rider and passenger especially if you are long in the legs and ... large in the waist.
Jim Murphy
EX-Lehman & Champion Dealer Owner Operator
Iron Butt Rider 2001
WHEN HELP IS OFFERED, A SIMPLE "THANK YOU" IS APPRECIATED.
Of course one needs to lay real steel ...
Today I lasered up the rear crossmember mounts and welded them in with a new chassis member. Then set it up with wheels on and on suspension (rachet straps binding the strut cross bar down) to check ground clearances so I can design further.
Making a start at the front end ...
Mark, it looks like design and construction are progressing very well.
What do you estimate the distance of the handle bar travel will be from full lock position left to right?
Have you factored the full lock travel distance into your front end design?
Looking Good
And I come back almost a full circle ...
Having wheel problems in that I can't get what I want up front (it's complicated), and one piece of the puzzle seems to be missing in each direction I take to get to a paricular result that I wanted.
If I go back to the original Strike (Trike/Sidecar), then the offset naturally allows me to use a center hub control arm/steering that offers me a number of advantages, low profile, lower center of gravity, better aerodynamics, etc.
I have spent the last few days designing on the computer, and hitting the local parts shops resourcing cheap OEM common parts (a Toyota HiLux lower ball joint for example), and haven't hit a brick wall yet.
Not only that, but it allows me to use the rear wheel disc brake, hub and stub axle for the front wheel from the same VW Mk 4 that the engine, driveline and suspension came from, and all 3 wheels are the same size and tire. Bit weird that all the VW front stuff is up the back, and the rear stuff is up the front now!
Did some hours today designing, will laser out the parts tomorrow and see how it looks.
The new found low profile with the center hub steering at the front will allow me to build a sleek body profile over it, a bit like a Stallion but squashed I guess. ....
Is it a Trike,? is it a Sidecar? is it a Sportscar? Is it a Tourer? ... why yes, yes it is.
This Sidecar, made from Meccano sets, actually has a similar seating arrangement to my original concept.
James May's Meccano set sidecar is the closest thing I've seen yet to my concept, albeit his is a lot smaller and more cramped! ..
There was a sidecar bike a few years ago very similar to what you want to do. VW driveline complete with the rear wheels still inline. Googled it but couldn't bring it up. Did find something more radical though. Google wildmantrikes.net should come up.
Designed, lasered and folded main control arm parts ready to go together...
Still playing with styling, going to have to make a decision soon though ....
I would mention again that my computer styling skills are minimal, a little imaginination required!
Sorry for no updates Guys, I am not one of those "show a few 3Ds then disappear never to be seen again", I actually have a long history of scratch built vehicles to completion.
My engine has had a miss on one cylinder, and a few backfires, and will be back at it when I fully recover from my burnt exhaust valve ....
Dang Dude ... I was excited when I saw a new post on this thread because I love your design principles.
Having said that, I'm really jazzed to see the new post because it sounds like you got your engine stuff taken care of ... sending prayers out for a full recovery. Get well and THEN get back to work.
And I thought my misfires where impressive ... NOT!