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!
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.
Will did you end up making the car or if not why not? Loved your voyage of discovery but I always questioned why you didnt take something already wrking and amend it to what you needed. Thanks to designers like you though I am learning the resolutions of how to make my own style of tilting system. Love to chat if you have time.
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.
Cool idea. Hope you haven't given up on this.. But I also hope you simplify the design before you manufacture it. Seems like the machined aluminum blocks, for example, are overkill. That's just going to make it more expensive and heavier than it needs to be. Also takes up way too much space. Most chassis use tube. One thing to consider is that most tilting trikes depend on the rider being very high up above the pivot point in order to be able to shift the center of gravity, just like you would on a motorcycle. A driver might need to counter steer pretty heavily on this to get into a proper tilt, so as to not tilt the wrong direction due to centrifugal force. I'm not sure that'd be so safe. Have you seen the Swincar? They appear to solve this issue by placing the pivots above the center of mass. That way centrifugal force automatically swings it into the correct tilt. With your batteries stacked up so high you're going to have a high center of gravity -- combined with the tilting mechanism this will make the car very roll prone, no? I'd make more of an effort to design around putting the batteries in the floor. Anyways.. the premise is a great one, and I've been giving the same very much thought as well. I look forward to seeing more progress on this.
Do you ever do this for other people? I'm putting a triangulated 4 link in my '51 Chevy and I need to know my bar angles to set my instant center. I'm shooting for between the trans and front bumper
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
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?
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.
Sir, I am part of a BAJA Team. We are not using differential in the car. How can I make changes in steering system and A-arm suspension to get minimum turning radius? Last year we did not use differential and got really bad results regarding turning radius and front wheel traction and response. Your suggestion shall help us to get rid of these problems. Thank You.
There is an issue with the turning radius calculations: the maximum angle for the spherical bearing has to be imposed on the internal wheel, not the external. To ensure kinematic steering the axis of both front wheels must intersect on the same point on the rear wheel's axis.
Hello, I'm korean student. I'm making tilting car.Your design is very nice. So I wnat your file and advice.Please give to me that file.[ zxvw2000@gmail.com ]
There seems to be an issue (although I'm still learning). All other depictions and videos I have found connect the instant center of the arms to their OWN tire's contact patch. In this video you mention using the opposite side tire contact patch which can produce radically different results. Any clarification?
