- Feb 8, 2015
ZeroEm said:Seems the faster you ride the heaver the trike needs to be! Just a thought.
That has a lot to do with weight distribution and frame geometry. A longer wheelbase can mitigate the tendency for a trike to lift the rear wheel when braking hard, and so too can shifting the rider and battery more toward the rear. While shifting the weight back adversely effects handling making the trike more tippy in corners, a wider front track and longer wheelbase both can mitigate this in order to expand the size of the triangle that the center of gravity must be contained within, and so too can a more reclined seat angle mitigate this.
After converting mine to electric with a heavy hub motor in the rear wheel in 2021, it no longer dived during hard braking.
This changed last year once I took the body shell off because it skewed the weight distribution in such a way that having my battery underneath the front boom was no longer viable and the trike then dove forward and lifted the rear wheel while braking. So I completely took the EV drive system apart after a few rides, because without the weight distribution set correctly, it was too unwieldly to ride, even though cornering capability improved and it seemed to become tip-proof, braking hard was too dangerous. The cornering improved so greatly that I could do donuts with this thing and slide around without tipping. But during a hard stop, it risked rubbing the battery mounted underneath the front boom against the pavement every time it dove. Now that I've added a rear suspension and extended the wheelbase, I expect this issue will be mitigated. I know with certainty it will be mitigated once I have a new body on it, but I can now put the battery safely behind the seat due to the extended wheelbase, and eliminate the issue. In fact, on the next body, like the Shell Eco Marathon cars, I intend to have the battery, controller, and motor all separated behind the rear firewall behind where I sit.