WARNING: NEVER LOAD A TUNE CARD IF YOUR BOARD ISNT RIDEABLE YET
EDIT: This tune card is OUTDATED, as it does some things to try to combat the nose hunting issues caused by IMU confusion/drift. This problem has been solved pretty much completely beginning with Dado’s Stable V6 Firmware, meaning even a much more basic tune is extremely versatile both on street and trail. Go check out my latest tune card for V6!
Hey y’all! As FloatLife Fest quickly approaches, I’ve been working on my own personal tune tailored to high speed trail riding, and wanted to share what I’ve been running so far! While it still has its quirks, it has in many ways been a game changer for me and absolutely crushes the majority of trails I’ve thrown at it so far. It also rides beautifully on street, though feel free to tone down certain features like Torque Tiltback and Variable Tiltback and set P/Mahony KP to 22/2.2 for an even smoother experience!
The goal was to keep as close to the classic FM board feel and control as possible, while also still taking advantage of some VESC benefits. This is why the use of Tune Modifiers are limited, with Turn Tilt and Booster disabled and Bump Comp fairly subtle, in an effort to keep the board predictable and controllable. However, Torque Tilt is actually used fairly heavily in order to take advantage of extended uphills and hard accelerations from a stop (I personally use Torque Tilt strength of 0.45 vs. the 0.25 in this card, but I only weigh 105lbs, definitely experiment with this!). For flatter/uphill heavy trails, I will sometimes bump Turn Tilt up to a strength of 3 or so, depending on the scenario.
One of my favorite quirks I’ve been messing with is Variable Tiltback. I’ve found that implementing a subtle variable tiltback almost has a similar effect to XR pushback, making the board feel a bit more solid as you push it up to speed. It’s worth experimenting with this one to find a rate and angle that you like (1000 ERPM ≈ 2mph), and even adjusting Constant Tiltback to alter your starting nose angle. By default, my tune uses a rate and max that, in practice, makes the nose approach 1 degree of tilt as you approach ~22mph. Ways you can strengthen this include doubling the rate to 0.2 (get to max angle at a sooner speed), and increasing the max angle to something like 1.5 or 2.
Last bit, I’m not sure if it’s some magic sauce with my I and Deadzone value or what, but any bonks, drops, etc. on this thing feel amazing and always land SOLID, no matter how nose/tail heavy you are or how much the wheel freespins. I have yet to get sent into a tail drag from a bonk. This makes bonks/drops to downhill MUCH more confidence inspiring.
EDIT: I have found that for trails where IMU drift (nose dipping) is a serious issue, Turn Tilt actually helps a ton! This is because as the IMU Pitch value drifts in bumpy terrain, so does IMU Roll, so Turn Tilt actually tends to trigger tiltback in response to IMU drift, keeping the nose up much more. I have found strength values of 6-9 are most effective for this use case, though feel free to experiment with the strength, as well as raising the maximum nose angle.
Just be wary of side effects this may introduce. Using turn tilt will make the board feel a tad less smooth and more twitchy/unpredictable, even on smooth ground at times. It can also trigger tiltback in scenarios where it is unwanted, such as on off-camber ground, downhill berms, and the rare situations in which IMU drift causes the nose to actually raise instead of dip. For this reason, I will leave it out of my base Tune Card, but it has actually been a game changer for me for trails, so feel free to give it a shot! Just use caution and ride safe!
Anyways, I hope you all get a chance to try it out sometime and see what you think! Keep in mind that this tune card is very much a “base,” and I’d encourage anyone to fine tune settings as needed, just as I do on a trail-by-trail basis.
I’ve linked the configs below, and the XML’s have been manually modified to only include the described parameters. This means you should be able to load them both up while preserving any personalized values (motor config, IMU calibration, battery specs, startup, tiltbacks, etc.). However, please make sure you backup your original configurations regardless to be safe, and please let me know if there are any issues with the configs. Happy shredding!
Tune Config Download: https://drive.google.com/file/d/1SlMgioIamFUzaysxEZy8Stx6hqgF77F3/view?usp=sharing