Tech => Tech Help => Topic started by: skadamo on April 29, 2009, 12:45:41 AM
Title: Tuning Power Delivery of an Electric Motor?
Post by: skadamo on April 29, 2009, 12:45:41 AM
Back when I owned my Cannondale e440 I used to hang out on thumpertalk and cannondaler.com. The Cannondales (now ATK's) are fuel injected and you could hook up a laptop to them and upload a custom map for power delivery. You could tune such things as throttle response, idle speed, rev limit, etc. People really geeked out on this stuff and I think it attracted some people to the bike. Here is a summary of the basic tuning... http://www.harrymoto.com/MX/maps.html
Now obviously some of these things are irrelevant with an electric motor. However, how about throttle response? I imagine there are situations where you don't want 100% torque at the instant the throttle is opened. For example, wet, rocky, rooty trails in the eastern United States. Is this something electric motorcycle manufacturers and guys building the bikes should consider engineering? Tunability of power delivery? Or does this post prove I just not grasping the way the electric motor works? :D
Title: Re: Tuning Power Delivery of an Electric Motor?
Post by: Bogan on April 29, 2009, 03:00:51 AM
i see what you mean, and it sounds like a good idea. Would probably be quite easy to do with a bit of programing, just put in a max motor torque increase rate, or a torque limit. Some programable controllers already have the torque limit, though dont know of any with an adjustable increase rate. Could even put a switch on the bars to flick between different settings on the fly
Title: Re: Tuning Power Delivery of an Electric Motor?
Post by: skadamo on April 29, 2009, 08:39:16 PM
Cool, thanks for the info Bogan.
Title: Re: Tuning Power Delivery of an Electric Motor?
Post by: picasso on May 04, 2009, 12:24:27 AM
You can just setup a circuit to ramp up or down the signal from the throttle.
Title: Re: Tuning Power Delivery of an Electric Motor?
Post by: Bogan on May 04, 2009, 02:39:39 AM
You can just setup a circuit to ramp up or down the signal from the throttle.
good idea, hook it up to a choke style lever mounted on the throttle side and you could have max torque adjustment on the fly
Title: Re: Tuning Power Delivery of an Electric Motor?
Post by: skadamo on May 06, 2009, 08:50:55 PM
Go to 2:09 seconds into this video. It mentions the Enertia throttle response has been tuned down and power delivery is fully tunable including "throttle map". I don't know if it can be done on the fly though...