[ausev] xantrex

[Aaron Choate]

That sounds really interesting.  It sounds like what we already do with the
vacuum accumulator for the brake assist.  I would be interested to hear if
anybody tries this or has seen this on a car/EV.

/Aaron

On Wed, Nov 19, 2008 at 9:31 AM, <jefoy at mindspring.com> wrote:

> Just a thought but I would expect the transition from power assist to no
> power assist could be disconcerting at best, dangerous at worst, if it
> happens unexpectedly or in a less than predicatable manner. I would opt for
> a simple on dash toggle over any type of momentary switch. Give yourself an
> indicator light to tell if it is on or off (as a reminder to turn it off
> while cruising). Save the power assist for low speed manuvering like parking
> or downtown driving.
>
> On a different note, since hydraulic assist works by pressure differential
> and at rest (or in a straight line) excess pressure is simply bypassed
> through the pump, would an accumulator tank and pressure switch achieve the
> same goal? I am picturing an air over oil tank to store power steering fluid
> under pressure. When you have used the system pressure down to a fixed level
> by steering input, a pressure switch activates to run the pump long enough
> to pump the accumulator back up.
>
>
> Jack Foy
>
>
>
> -----Original Message-----
> From: Rob H
> Sent: Nov 19, 2008 9:14 AM
> To: AustinEV News Announcements and General Discussion
> Subject: Re: [ausev] xantrex
>
> I'd considered using my clutch pedal to activate the P/S pump.  Since I'm
> clutchless, it currently hangs dejected near the brake pedal and gazes
> longingly at the accelerator.  I find it easy enough to go without P/S, but
> it would make a difference for my wife.
>
> Rob
> RAVolt.com / EVAlbum 995
>
> On Wed, Nov 19, 2008 at 7:53 AM, BUZ DILLON <extreme2 at flash.net> wrote:
>
>> That power steering draw is nuts.  Installing the relay to shut it off or
>> going to a manual steering rack would probably get you a noticeable range
>> boost in cold and warm weather.  My Lectra loses a bit of range in colder
>> weather.  The cooling fan for the motor and controller does not come on
>> which makes up for some of the capacity loss.  Also since it is a motorcycle
>> I rarely ride it in really cold weather.  Turning off my headlight is
>> probably a similar drain to your steering in proportion to battery capacity
>> and doing so makes it pull hills better after a few miles.  Storing and
>> charging in a somewhat heated garage also helps a lot.
>> Buz
>>
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>>
>
>
> --
> Rob
> ____________
> Rob Hirschfeld
>
>
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