Domino throttle
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steven7601 10 W
- Posts: 81
- Joined: Apr 22 2017 4:26pm
Domino throttle
Can anyone tell me were I can buy a domino throttle.
Re: Domino throttle
It would be good for the original poster to put at least a general location into his settings to guide people answering his questions.
Re: Domino throttle
I bought some from them, it went fine.
Note that the Domino on the Zero is dual hall and the Domino available is 5k pot.
-methods
Note that the Domino on the Zero is dual hall and the Domino available is 5k pot.
-methods
Increasing battery voltage and controller current limit will result in a non linear experience
Re: Domino throttle
That's interesting. Where is the dual hall Domino version available? (note that I've had no problems with the sealed, weather rated pot version).
Re: Domino throttle
I have seen them overseas but they are more a company that you spec and order batches from...
So from the supplier
I am sure you could get sample batches out of them - 5 could happen but 20 is where I usually start
(Enough to convince them that you are doing an engineering evaluation)
Zero specified the dual-hall in an attempt to improve safety and interlocking around their throttles. Turns out the Sevcon wont reliably accept this input (or so I am told) so one input goes to the Sevcon and the other goes to the MBB - for a 2 factor authentication.
Big picture - we need 2 "intents" to apply power in excess of about 1hp
I like a pot with a switch at zero.
Opposite facing hall sensors do as well - but require smarts - as both are obviously analog signals.
Golf Carts have always had this inherent in the design.
I have absolutely no idea how Zero got bikes on the road which did not have interlocks on the throttles... but they did.
Regulatory is way behind in the EV scene... and motorcycles are way down the safety list... as by their very nature they are an acknowledgement of a ... eh... high tolerance for risk.
I am still ranting at those bastards (Zero) to understand that their battery design will be found to be not in compliance... but they do not listen. Mostly because they think nobody around is qualified to even understand what it does, let alone how it fails, and how this impacts regulatory.
They think they are getting away with something.
They are simply getting ready to get swatted in the ass.
Pisses me off just to think about it
So I dont
Anyway... Throttles
Pick one that is first IP67 (Domino rates their throttles)
Pick one that has a secondary interlock (Hall digital Switch, physical Micro Switch, Second analog sensor, other)
Make sure
that in some way
If voltage is cleverly applied to your throttle (vs ground) that there is no way the bike (or vehicle) can move - without the secondary intent being triggered.
We guard only against single point failure
Not against cascade or multi-point failure
... the battery ... has a single point failure... especially and end of life...
It is very easy for one of the 4 cell boxes
To have one wire dissconnected from the parallel harness
Meaning the BMS can not see or read balance it
Meaning it is not being held parallel to the other three cells
Such that when you bulk charge
It is possible for this one cell
To charge beyond safe limits
it is possible
For this one cell to discharge beyond safe limits
HOw this turns into pack failure or fire or smoke or ... anything else?
Does not matter
Its a general principle thing
We dont design single point failures into large lithium batteries that are charged indoors and discharged out where fires can start.
Likelihood?
Exponentially growing thru time
Hence why my volume is exponentially growing in the YELLING I am doing at them
They can start by hiring some Electrical Engineers on their Electric Project... instead of allowing those who dont actually know what they are talking about to ... to continue with the charade.
As always
As soon as it is fixed
I will shut up
I make no money off of them or their competitors
When I did work for them they paid shit and I was happy to leave to Tesla
Yep - I love every EV company - but when you claim to be the leaders... you better know what the frock you are doing.
-methods
So from the supplier
I am sure you could get sample batches out of them - 5 could happen but 20 is where I usually start
(Enough to convince them that you are doing an engineering evaluation)
Zero specified the dual-hall in an attempt to improve safety and interlocking around their throttles. Turns out the Sevcon wont reliably accept this input (or so I am told) so one input goes to the Sevcon and the other goes to the MBB - for a 2 factor authentication.
Big picture - we need 2 "intents" to apply power in excess of about 1hp
I like a pot with a switch at zero.
Opposite facing hall sensors do as well - but require smarts - as both are obviously analog signals.
Golf Carts have always had this inherent in the design.
I have absolutely no idea how Zero got bikes on the road which did not have interlocks on the throttles... but they did.
Regulatory is way behind in the EV scene... and motorcycles are way down the safety list... as by their very nature they are an acknowledgement of a ... eh... high tolerance for risk.
I am still ranting at those bastards (Zero) to understand that their battery design will be found to be not in compliance... but they do not listen. Mostly because they think nobody around is qualified to even understand what it does, let alone how it fails, and how this impacts regulatory.
They think they are getting away with something.
They are simply getting ready to get swatted in the ass.
Pisses me off just to think about it
So I dont
Anyway... Throttles
Pick one that is first IP67 (Domino rates their throttles)
Pick one that has a secondary interlock (Hall digital Switch, physical Micro Switch, Second analog sensor, other)
Make sure
that in some way
If voltage is cleverly applied to your throttle (vs ground) that there is no way the bike (or vehicle) can move - without the secondary intent being triggered.
We guard only against single point failure
Not against cascade or multi-point failure
... the battery ... has a single point failure... especially and end of life...
It is very easy for one of the 4 cell boxes
To have one wire dissconnected from the parallel harness
Meaning the BMS can not see or read balance it
Meaning it is not being held parallel to the other three cells
Such that when you bulk charge
It is possible for this one cell
To charge beyond safe limits
it is possible
For this one cell to discharge beyond safe limits
HOw this turns into pack failure or fire or smoke or ... anything else?
Does not matter
Its a general principle thing
We dont design single point failures into large lithium batteries that are charged indoors and discharged out where fires can start.
Likelihood?
Exponentially growing thru time
Hence why my volume is exponentially growing in the YELLING I am doing at them
They can start by hiring some Electrical Engineers on their Electric Project... instead of allowing those who dont actually know what they are talking about to ... to continue with the charade.
As always
As soon as it is fixed
I will shut up
I make no money off of them or their competitors
When I did work for them they paid shit and I was happy to leave to Tesla
Yep - I love every EV company - but when you claim to be the leaders... you better know what the frock you are doing.
-methods
Increasing battery voltage and controller current limit will result in a non linear experience