My trike is a success and does about 1600 km a year.
A friend wanted to try and build one as well , however his has strange
behaviour ? he lives over 4 hours drive away and under the current
circumstances I cannot visit to try it for my self.
He has the ability to change the pivot angle about 10' either side of the
60' he started with , mine is 56'.
These are his comments :
I have tried a few more simple runs up and down this lower end of my
street. I have taken the opportunity to coast “feet off” in all runs.
I have also taken the trike into the car park yard of the BT exchange where
there is no camber as such but the surface is sloped.
I have the following observations to impart:
1. If there is a slope or camber to the road the front end wants to
go UP the slope (towards the centre of the road).
2. The angle of the pivot magnifies this effect. More vertical pivot
= *LESS* turning force; more laid-back pivot = *MORE* turning force.
3. Trying this same coasting with feet off trick travelling in the
wrong direction up/down the road on the wrong side of the road the
Left/Right turn is reversed, the front end still wants to climb the
This rather suggests to me that it is the fluidity and “relative lack of
friction/resistance even when under load” of the pivot that allows the
behaviour to occur.
Any ideas what might be happening ?