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Zoe on steep hills

Posted: Sun, 29 Jul 2018, 11:45
by doggy
I have a 33% driveway. To put this into perspective, the steepest public road in Sydney is 25%. The Guinness Book of Records lists 36% in NZ as the world's steepest public road.

So, I was concerned before buying Zoe because some ICE cars cannot get up and almost no trucks.

Enquiries on the SpeakEV UK forum allayed my fears and my calculations suggested Zoe can make it up 40+%. These calculations used the wheel size, motor torque, overall reduction ratio, force of gravity and a modest acceleration figure.

The good news is that Zoe makes it with no problems. I can even stop in the middle of the hill and take off again. Power usage is not very high, about 30kW (torque is the key).

However, she won't do it, even with a run-up, in Eco mode.

I suspect all EVs could make it up my driveway given their generally high torque from low revs.

Cheers,
Dave

Re: Zoe on steep hills

Posted: Sun, 29 Jul 2018, 12:38
by antiscab
The hill start assist feature with the auto brake makes it pretty easy too. Eco mode is a gimmick, it just limits you to 30% Max throttle

Re: Zoe on steep hills

Posted: Sun, 29 Jul 2018, 13:20
by doggy
True, and I do not use Eco normally. But Eco might be useful if you have 10km to a charge point and the juice is marginal (e.g. 1kWH left). It also cuts back on the aircon.
Cheers,
Dave

Re: Zoe on steep hills

Posted: Sun, 29 Jul 2018, 14:54
by coulomb
doggy wrote:
Sun, 29 Jul 2018, 11:45
I suspect all EVs could make it up my driveway given their generally high torque from low revs.
I had a driveway recently that a Prius (2007) would not go up.

Re: Zoe on steep hills

Posted: Sun, 29 Jul 2018, 15:47
by mikedufty
Good to hear. It would be interesting to know if an i-MiEV could make it up, I think it could once moving, but would be concerned the soft start they have programmed into it might prevent it moving from a standstill. Has handled everything we've thrown at it easily so far though, so the soft start might just mean you need to wait a bit.

Re: Zoe on steep hills

Posted: Wed, 01 Aug 2018, 14:53
by LouB
Hi
It's reassuring to see that the Zoe can easily negotiate quite steep driveways.
I had my first test drive of a Zoe Intens last week from Sydney City Renault. It felt quite zippy but, because of the 60 kph limits in that area, I did not get the chance to try it at highway speeds. How does it perform when accelerating from an on-ramp and matching the traffic at 110 kph? How does it handle long uphills when already travelling at 110kph ?

I would not expect it to match an BMW i3 but, is it adequate, or do you have to change to the slow (left lane)?

BTW my wife was very impressed, especially with how quiet it was and with the surprisingly large boot. I liked it, but the turn indicator being on the left of the steering wheel took some getting used to.

Lou

Re: Zoe on steep hills

Posted: Wed, 01 Aug 2018, 22:10
by antiscab
Accelerates plenty quick for me, and I'm a lead foot

Re: Zoe on steep hills

Posted: Thu, 02 Aug 2018, 06:06
by doggy
Hi Lou,
No problems at all with speed and acceleration. However I have only been on 100km/hr not 110km/hr roads so far.
I have only owned European cars for the past 54years so no problems with the stalks for me (or my wife)!
The only time I have a problem is when I drive an Australian car- which is rare. But I am sure you would get used to it after squirting the windscreen a few times!
Cheers,
Dave