Luna BBSHD Ludicrous V2 controller documentation

[AZguy]

Yes - throttle behavior ideally should be consistent and unchanging

This is especially important managing higher powers IMO

My BBSHD was one of those that had the "PAS-override" issue where you couldn't use the throttle while pedaling and we came up with a parameter set that effectively overrode the PAS altogether and I set it up with three levels of maximum throttle (~750W, 1000W & 1500W) and after a bit I just always left it alone. In that mode I'd have to use the throttle 100% of the time and really didn't like it changing even though the differences weren't all that great and not that high.

I did an electrical mod at least a couple of years ago to address the "PAS-override" - best thing I could have done, didn't realize how much that bothered me until I fixed it

I tried tying the throttle to the PAS levels and even at those lower powers thought what a really bad idea. The worst part was that you couldn't command more power than the PAS level... but having it be different was also really bad, especially since the difference between PAS 1 and 9 is almost 20:1 in my setup...

[marcos]

Yes for me that would be close enough, but I think AZguy wants the exact same behavior, and that's not exactly the same

[StvMan]

Marcos/Azguy, Would I be correct in saying that AZguy’s config preferences would be met by choking back the PAS% while leaving the MAX motor current at 150A (or in the profile settings MaX watts). While you wouldn’t reach max in PAS, you would always have much more (if not max) using throttle for those critical moments.....correct?

[adamlivi]

Think I hit a firmware bug. Wanna discuss here or offline?

[marcos]

after you stop pedaling the motor will be driven for 4 seconds with a very small current (18mA if you are in level 9 IIRC) so the motor doesn't go to 0 rpm right away.

[adamlivi]

I noticed that in the latest firmware update there was this feature "PAS keeps the motor spinning at minimum current to prevent chain slapping". How is this implemented as I have not noticed this behavior, Thanks

[AZguy]

Cool Marcos - I figured it would be easy to address in code

My background is decades, more than a million miles, plenty of track time and desert racing motos and so I may have a different perspective on the throttle. For me it really needs to be consistent and I'm likely ok with full throttle being full power although I'd likely limit full power on this controller for both PAS and throttle... throttle needs to be consistent and exceed the power of the lower PAS levels which I would likely set a lot lower than most people - e.g. the maximum current in PAS1 on my BBSHD is just 1.8A (<~100W).

[adamlivi]

Marcos. 3 second ramp up is nice. Feels like a locomotive

[adamlivi]

Thanks Marcos. Slower was the correct guess. Thanks. I’ll play with that.

[marcos]

We discussed this and it was done that way to avoid users getting injured with the default 150A setting.

Eventually it this be configurable from the app, but if its a hard requirement NOW you can change the code, its very few lines of code. I rode it your way for quite some time until we agreed to tie throttle to the levels.

[marcos]

Hi Adam, I think you need to define "softer". I'm not sure if you want a slower response (heavy filtered PAS input) or just lower torque like ncmired pointed out.
If you want your throttle to react slower, you go to Apps->ADC->General->Positive Ramping time
If you want your PAS to react slower, you go to Apps->PAS->Positive Ramping time

These two settings introduce a delay. if you set it to 1.0, it will take 1.0 seconds to reach 100%

If you just want to reduce the torque you can do that using profiles.

Personally I just keep my motor current limit maxed out (150A at the throttle) and just play with App->PAS->PAS Max Current for lower PAS torque

[AZguy]

I definitely don't want the throttle to change *ever* aside from diddling the parameters - it should behave the same always so we can get our muscle memory working with it proper

If max so be it although I'd be happy with it less - I've had motos where max throttle can dump you on your butt or break the rear wheel loose so I'm cozy that I can get used to anything as long as it's "enough"... but that's the point isn't it? I need to get used to it and if it changes that's much, much less practical... deal killer really...

I suppose since it's open source it's likely easy enough to address even if just hard coding a maximum but I'm not sure why a throttle that behaves differently depending on *any* other setting would ever be a good idea in my not so humble opinion... particularly in a higher power vehicle... a wrist will learn whatever it is but if it's not enough for the times we need a lot of power right at the moment and it's different at different times it's pointless... this seems like a serious and potentially dangerous flaw to me...

[ncmired]

It's been asked for (as an option), I believe. I initially thought I'd want full throttle power no matter what PAS level but no longer do, mainly because I don't think my drivetrain will hold up to it. It IS good that the throttle has more rotation range.

I normally use PAS 2-3, with PAS 4 reserved for "Scotty, warp 9!" rare conditions. I also have to be careful to not trip the battery BMS at PAS 4 (and above), 'cause when does I have to wait about 30 seconds to reset it. In traffic it's not fun or safe.

PAS 9 throttle - stand back / stand clear of flying shrapnel ...

[AZguy]

I can definitely say I don't want the throttle maximum to follow the PAS level - it's a requirement for my riding

One of the big things I need from a throttle is that "emergency" umph and it needs to exceed the PAS level maximum considerably

Any plans on making this an option? Be best that it can be set to some nominal level but I'd live with max throttle being max power [all the time]

[ncmired]

Hi - I've found the throttle and pass work pretty softly when set to PAS 1 - unlike the stock controller stock setup, the V2's throttle "power" is proportioned to the PAS level. Additionally, at least with the universal throttle, the throttle range expands as you go up PAS levels - unlike with the stock controller, where only the first quarter of the throttle range does anything (if this makes sense).

P.S. also, no throttle power in PAS 0 (again, unlike the stock controller usually)