Are Jaguars and Talons compatible? Nothing that I have found shows that there are any key differences that would create problems if we used both on the same bot, but I’m curious if anyone has insight on this. Thanks!
Depends how you want to use them.
-Mixing in the drivetrain - NO
-Elsewhere - Sure, unless the two motors are sharing the same load
Why not?
-Elsewhere - Sure, unless the two motors are sharing the same load
Why not?
Well Ether,
I would suspect because the motor curves are different??
What’s the exact explanation or correction?
He means the controller curve. A Victor has a different curve from the Talon, which has a different curve from the Jaguar. Mix up the motor controllers and some motors are not spinning as fast as others, causing strafing in the drivetrain, or abrasion in a motor set, when a motor needs to fight the less power being received by a different motor. In real life, while these issues are quite minimal because a lot of work is done to make the curve more linear, It isn’t what you want for precision operation!
The code is something that hasn’t been discussed too much. Using the same motor controller for at least a specific component will ensure that the code stays cleaner and easier to understand. You don’t want to look at programming jargon, where half a subsystem runs code for a Victor/Talon, and the other half runs the Jaguars. That just becomes very messy and can be hard to understand.
It’s OK to combine motors with different motor curves.
For example, a CIM and a mini-CIM on the same gearbox.
My bad, as Yash 101 said, I meant controller curves
So why is that not OK,if it’s OK to combine motors with different curves?
Hmmm good point. I just always assumed it was just bad practice.
SO does it have much effect???
If you’re trying to do closed-loop control there might be situations where it might be preferable to match the controllers.
Hey CD, any teams out there who used 1 Jag and 1 Talon for each 2-CIM gearbox on each side ?
Slightly different but same principal I guess: This year we had 3 884 victors from vex and then 1 884 from Ifi and there was a significant difference in our drive train as it would turn ever slightly to the side. However, those were not jaguars or talons so not sure about that combination of those two. Also, all of the victors were tested beforehand and worked well. Just figured this would help a bit even if it wasn’t what you were looking for exactly
Well…IFI owns VEXPro so essentially it was just an older 884 and a newer one. There was a year there where they rebranded their stuff. So accordingly, we have IFI spikes and VexPro Spikes
Unless you swapped the two left-side Vics with the two right-side ones and observed that the problem switched sides, you can’t conclude that the turning was caused by a difference in the Vics.
You could run unmatched tires on your car but I would not recommend it.
Not analogous.
Are you saying Victors and Talons are compatible? We have two victors and two talons (only one jag, that was a mistake). Would having half Victors and half Talons cause issues?
And now 90% of the students are looking up the definition of analogous.
Talons and jags were built to do different things. Just like street tires and snow tires were built for different tasks. Sure they will drive your car but are they best suited for the task together?
They were both built to control the voltage applied to brushed DC motors.
They both use the same switching method and the same switching frequency.
Let’s explore this together. What do you think would be some of the possible problems with controlling a 2-CIM gearbox open-loop with one Talon and one Jag, on each side of a skid-steer bot?
No. Not saying that.
I am searching for the source (hard data or well-reasoned theoretical considerations) of the apparent conventional wisdom that Jags and Talons are never compatible in any application.
We have two victors and two talons (only one jag, that was a mistake). Would having half Victors and half Talons cause issues?
I think that’s a question worth discussing (and possibly testing). I wouldn’t recommend risking your 2014 season on it.
We replaced all of the victors today with all 888s and no other changes and it is working perfectly now so unless we didn’t have something screwed in tight then it probably was that as we are driving perfect now. I’m not sure though