[Ovmsdev] Twizy45 testing needed

Mon Jan 27 19:44:16 HKT 2014

The "knock" sound is due to the gear box being 
coupled a little bit loosely. This knock can also 
be heard on rapid load changes.

That's why the "start" ramp is normally so slow 
(3% on the T45, 4% on the T80), SEVCON calls this 
parameter "oscillation damping for loose gear boxes".

So 100% instead is of course a radical change ;-), 
experiment with this value (first RAMPS param) 
until it sounds ok.

Range will be affected by "race modes", but you 
can also configure "eco" modes as well. You can 
also gain a little bit range through higher 
recuperation, if you carefully use the power plus. 
It's all in your foot :-)

Regards,
Michael

Am 27.01.2014 09:14, schrieb Julien (JaXX) Banchet:
> :)
>
> Well, 11km run, with a few higher speed portions.
> Achieves illegal speeds swiftly ! (I'll put it 
> back to normal)
>
> RAMPS/SMOOTHING combo kicks, literally.
>
> Actually, when putting the power on, you can 
> hear a "knock" sound, like if the motor made a 
> x° rotation to sync in some position, but I 
> could be wrong.
>
> At low speeds, pushing or releasing the 
> accelerator is immediate followed by the 
> expected behavior, making the car rock a bit.
>
> Range seems affected, no massively but there is 
> a difference, of course, will have to see that 
> over time, plus it was freezing.
>
> see ya soon !
>
>
>
> Le 27/01/2014 02:17, Mark Webb-Johnson a écrit :
>> The flexibility in the tuning of this is making 
>> me very jealous!
>>
>> Mark.
>>
>> On 27 Jan, 2014, at 3:14 am, Julien (JaXX) 
>> Banchet <jaxx at jaxx.org> wrote:
>>
>>> Sure will try tomorrow !
>>>
>>> Maybe something like this
>>>
>>> CFG RECUP 25 35
>>> CFG TSMAP N 100 100 80 50
>>> CFG TSMAP B 75 100 80 60
>>>
>>>> 39 will have a recup kick with breaks (urban 
>>>> situation anyways, barely ever over that 
>>>> speed, unless I leave early enough :-) )
>>> the sub 33kmh will have near matching values 
>>> between neutral and breaking, a no surprise 
>>> zone in other words
>>>
>>> Won’t be getting back much more juice in the 
>>> end but well, it’s still that :)
>>>
>>> Will give a shoot to the RAMPS/SMOOTH combo as 
>>> well,
>>>
>>> MfG,
>>>
>>> JaXX
>>>
>>>
>>> ------------------------------------------------------ 
>>>
>>> De: Michael Balzer dexter at expeedo.de
>>> Répondre: Michael Balzer dexter at expeedo.de
>>> Date: 26 janvier 2014 at 19:58:38
>>> À: Julien (JaXX) Banchet jaxx at jaxx.org, 
>>> ovmsdev at lists.teslaclub.hk 
>>> ovmsdev at lists.teslaclub.hk
>>> Sujet: Re: [Ovmsdev] Twizy45 testing needed
>>>
>>>> Hi Julien,
>>>>
>>>> thanks :-)
>>>>
>>>> Great to read everything works as designed :-)
>>>>
>>>> Supplementing the POWER command, you should 
>>>> also try
>>>>
>>>> RAMPS 100 100
>>>> +
>>>> SMOOTH 0
>>>>
>>>> -- this sets start and acceleration ramps to 
>>>> maximum speed and
>>>> disables
>>>> smoothing. This makes the Twizy much more 
>>>> responsive to the throttle
>>>> and
>>>> can make more difference than the 11% torque 
>>>> increase (120% will
>>>> be cut
>>>> down internally to 111%).
>>>>
>>>> For RECUP, take a look at 
>>>> docs/Twizy-Torque-Speed-Profiles.ods:
>>>> you can
>>>> shape the braking recuperation strength per 
>>>> speed. Try:
>>>>
>>>> TSMAP B 80 100 60 40
>>>>
>>>> -- this is from sheet 2 "Recup1" and will 
>>>> shift the braking recup
>>>> max to
>>>> ~39 kph. This works pretty well on the T80 
>>>> with 40% braking recup
>>>> level.
>>>> Btw: the TSMAP speed points are at the same 
>>>> for the T45.
>>>>
>>>> Regards,
>>>> Michael
>>>>
>>>>
>>>> Am 26.01.2014 19:20, schrieb Julien (JaXX) 
>>>> Banchet:
>>>>> Hi all,
>>>>>
>>>>> Hi Michael,
>>>>>
>>>>> Listen, first things first:
>>>>> Wow, what a f*cki’n crazy great job you’ve 
>>>>> done there !!!
>>>>>
>>>>> Now: well, works as expected on my Twizy45,
>>>>> Tried these on a very short run:
>>>>> POWER 120 115 110 (I believe I feel a slight 
>>>>> difference, but not
>>>> that obvious)
>>>>> SPEED 60 75 (didn’t have any slope to go 
>>>>> beyond, got up to 60 neat
>>>> and fast, kind of surprising/scary at first)
>>>>> RECUP 27 42
>>>>>
>>>>> Ok, Recup: 27 instead of the default 21 (on 
>>>>> the T45) is sensible,
>>>> at the limit of slowing down a bit to fast 
>>>> for the following cars
>>>> without a brake light
>>>>> 42 on brake is scary: you’re already at 27, 
>>>>> once you barely touch
>>>> the brake, 42% recuperation kicks in after 
>>>> half a second, so you
>>>> get your expected friction-brake slowdown and 
>>>> boom, an extra
>>>> slow down from recuperation… 42 is really too 
>>>> agressive, making
>>>> an in between/modulated foot controlled 
>>>> slowdown nearly impossible…
>>>>> Will try 25 35 (Delta of 10% instead of 15%)
>>>>>
>>>>> We’ll see…
>>>>>
>>>>> Again: w00t! in town the crazy parisians 
>>>>> will be less tempted
>>>> to push me over the road as long as I can 
>>>> keep up with their illegal
>>>> speeds !
>>>>> (note: This is to be done at your own risk, 
>>>>> mostly legal)
>>>>>
>>>>>
>>>>>
>>>>> (sorry for the lack of mail quote, I 
>>>>> deactivated the digest mode
>>>> which is kind of a pita)
>>>>> -- 
>>>>> Julien (JaXX) Banchet
>>>> -- 
>>>> Michael Balzer * Paradestr. 8 * D-42107 
>>>> Wuppertal
>>>> Fon 0202 / 272 2201 * Handy 0176 / 206 989 26
>>>>
>>>>
>>> -- 
>>> Julien (JaXX) Banchet
>>> _______________________________________________
>>> OvmsDev mailing list
>>> OvmsDev at lists.teslaclub.hk
>>> http://lists.teslaclub.hk/mailman/listinfo/ovmsdev 
>>>
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-- 
Michael Balzer * Paradestr. 8 * D-42107 Wuppertal
Fon 0202 / 272 2201 * Handy 0176 / 206 989 26