Did you know your aftermarket dash display can (possibly) do this?
Racing without ABS (antilock braking system) in the dry on a good set of slicks is one thing, but it can be a bit of a handful in the wet especially if you haven't had the chance to gain a lot of seat time in your vehicle to dial in your left hoof.
Short of fitting ABS, there's no way around it, but there are some things you can do to help you keep tabs on things and avoid lockups, and one we show here is a wheel lock-up indicator via our dash display.
There is more than one way to do this logic wise which Andre here runs through, and there are of course some downsides depending on the data you have access to when it comes to the limitations of such a system as explained, but every little bit helps at the end of the day and this 'quick and dirty' setup is certainly better than letting Jesus take the brake pedal for you.
The car this is being setup on is a rough-ish old EF Honda CRX running a K20 swap with aftermarket rods, cams, Jenvey Dynamics ITBs and a slightly increased compression ratio to put out 250hp at the wheels.
Electronics wise the car is running an EMtron SL4 ECU and a MoTeC C127 dash/data display unit which does the 'heavy lifting' here for us. The car also runs an aftermarket pedal box which allows the team to tinker with the brake bias easier if required, but for now they simply need more data before deciding what does and doesn't work.
Interestingly while the rear of the car had no wheel speed sensors at all, the front did come with one from another model of Honda (parts are awesomely interchangeable on these) but rather than a Hall sensor etc it uses something different that our aftermarket ECUs require a pull-up resistor to make use of. We threw that in the bin though and have opted for something else.
As well as allowing this lock up light, the wheel speed sensors will also help us setup our pit limiter function to avoid penalties or worse for speeding in the pit-lane, and traction control for when things get damp or tyres fade.
This 'Today at HPA' update came before members webinar '312 | Switched Cam Control — Emtron' which can be found in our members-only webinar archive page.
------------------------------------
TIME STAMPS:
0:00 - Aftermarket Dash Option/s
0:30 - K-Swapped Honda EF CRX
1:41 - Ben & Andre Are Sooks
1:52 - Slicks Ain't Cheap
2:02 - Lock Up Light Solution
2:30 - Wheel Speed Sensor
3:02 - Wheel Speed Teeth Removed, But Oddly
3:38 - Factory Style ABS Sensor, Magneto Resistive Sensor
4:39 - In the Bin, Hall Sensor Used Instead
5:22 - MoTeC Trigger Recommendations
6:54 - Worked Anyway For A Test Before Replacing
7:27 - Rear Wheel Speed Sensors A Little Harder
8:17 - Why Do This & More Than One Way
9:12 - Speed Input
9:38 - The Setup/Logic
12:08 - The Downsides & Data
15:02 - 3D Table Setup GPS Vs Drive Speed
16:58 - Not Specific To MoTeC Dash
------------------------------------
Interested in learning how to do your own wheel alignment for the track or street? Start with a free alignment & suspension 101 lesson now.
Comments
No one has commented on this page yet.