[quote]On 12 Aug 2011 at 12:27, Electric Blue auto convertions wrote:
> I set the curb
> idle at 700 RPMs and thats that .
With all due respect for your years of experience, I think this is not an
ideal solution, though I admit it's a tough problem.
On the plus side, it gives the EV a more familiar feel for the average guy.
It does away with jerking as the clutches engage at breakaway, or the need
for an external pump.
The problem is that it throws away one of the EV's big advantages - that it
doesn't need to waste energy idling in traffic. It also gives up what I
think is a small but nice advantage of an EV - that (with a well matched
motor and controller) you can almost move the vehicle by millimeters. It
doesn't lunge forward when you take your foot off the brake, as an ICEV with
a slushbox does.
Maybe idling the motor isn't a big range loss in the summer when you're
running the aircon anyway. But in the winter, there's no aircon to run
(though you could argue that you still need PS). You're wasting battery
energy, and that's not so good when it's cold and range is lower to begin
with.
Bottom line is that a normal factory slushbox is made for use with an ICE.
It's really not well suited for mating with a motor. A conversion built
with one will always be something of a hack job. You can make it work
better with an external pump, but it's still the wrong tool for the job.
I know it's getting tougher and tougher to find ICEVs to convert that have
manual transmissions. But there has to be a better way than hacking up an
automatic trans to work tolerably well - and just like an ICE's. I wish I
knew what to do other than go for a (pricey) custom trans, or direct drive -
also more expensive because you need a stouter controller and motor.
David Roden - Akron, Ohio, USA
EVDL Administrator
= = = = = = = = = = = = = = = = = = = = = = = = = = =
EVDL Information: http://www.evdl.org/help/
= = = = = = = = = = = = = = = = = = = = = = = = = = =
Note: mail sent to "evpost" and "etpost" addresses will not
reach me. To send a private message, please obtain my
email address from the webpage http://www.evdl.org/help/ .
= = = = = = = = = = = = = = = = = = = = = = = = = = =
_______________________________________________
| Moratorium on drag racing discussion is in effect.
| Please take those discussions elsewhere. Thanks.
|
| REPLYING: address your message to xxx@xxx.xxx.edu only.
| Multiple-address or CCed messages may be rejected.
| UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub
| OTHER HELP: http://evdl.org/help/
| CONFIGURE: http://lists.sjsu.edu/mailman/listinfo/ev
Re: [EVDL] auto trans
Linear Mode
