Fantastic! Ive built a few model tilting 3 wheel Radio Control trikes... thinking about trying to make a light electric full size - you are way ahead of me though! But inspirational too!
you could rotate your rod ends thru 90 degrees to give more tilt but then you would reduce your steering angles.. ' I am looking at building a tilting 3 wheeler too - the best design front uprights I have found is on the Brunelli leanster... I am aiming for 45 deg tilt... Roger
Roger Dunkley good idea! What if I tilted the axis of the rod ends 45 degrees - I'd have 50% more tilt angle but 50% less steering angle right? I guess it's all a trade-off - so I'd need to set a minimum steering radius and then maximize the tilt angle that would give me that steering angle.
The upper and lower , front and back Heim joints on the inner ends of the A frames should have been mounted 90 degrees from where they are so there would not be any restriction to the tilt. Do the shocks have an inner spring to force the system back to center upright position or do you need to add exterior shock springs to do that?
Interesting. I'm working on a similar design (on my YT channel if interested). Look up misalignment spacers to increase the angle of misalignment a lot. Looks like you don't need rod ends on the inner ends of the arms anyway, just hinges would do.
the upper arm cannot be solid/fixed length. the outter wheel must always be more inclined than the inner one. the solution is to make the controls for the steering, to move the upper arms in a syncro pulling that makes both the wheel turn and tilt.
rotate your rod end bearings 90°. you're going to run into steering linkage issues. and shock clearance at the suspension Rises. Take a look at Dean sundahl SRP long travel banshee. and modified to your pivoting frame
This does not work. The springs must not be attached to the frame. Otherwise it will prevent the tilt. With this system, the driver tilts only in the wrong direction. The springs must be closed at the top, but not in the body! The springs must not be in direct contact with the upper arm. Because this prevents the tilt.
What about steering? Ok I love tilting three wheelers and four wheelers. The intrigue is multiple. Emulating the feel of a two wheeler with the stability of a stand alone platform allows the potential for all season riding including the practical application of weather protection! What is often missing in these designs is another advantage of a two wheeler which is (narrow track profile). Allowing many advantages such as parking where cars can’t. Also lane splitting and access to pedestrian pathways. The whole point for me in the tilting is for a narrow track vehicle to not flip over in a turn. So if you create a tilting vehicle who’s profile is not less than 24” wide you have missed a very valuable point to going through with this added engineering base. Not sure this example meets this potential!. Also for me personally it must be electric powered. If your going to be cutting edge negating this option is very disappointing and short sited.
Definitely i am with you. Please could you tell your ideas? In my own trike design, i think 3-5 degree negative camber. Rods will provide correct ackerman angles. And very limited tilting. While tilting, should rear wheel be tilted as well? or a spherical joint in middle of body, and only front wheels can be tilted? It can be driven by pedals at front wheels and electric driven. But i cant go on about how can i achieve both electric motor drive and pedal drive at the same time? And different front wheel speeds at turns?
