DIY Hub Dyno -Baller version
Posted: Mon Nov 01, 2021 1:30 am
Something that I've been toying with for a few years, was adding a Hub Dyno along side my existing chassis dyno for my own/customers higher HP vehicles.
I had received quotes over the years from Mainline & Dyno Dynamics, but could never justify the $95-110k asking price, since I can go weeks without using my existing one. So I then decided to go down the path of "building" my own, borrowing idea's from some existing units people had made already & publicized on youtube etc.
So i started investigating my options, I started with getting a quote for some retarders back in Nov 2019 from a local supplier.
CFK-390(192V) @$8,810 plus GST
CFK-500(192V) @$9,493 plus GST
Max Brake Torque NM - 3370 / 3820
Made by KLAM in Spain
Thinking bigger is always better, I went with the CFK-500's (realized i definitely went over-kill once they arrived)
Control System - Off the shelf from sportsdevices.com
SP6 - AWD capable/upgradable (If i want to make some smaller front pods later on)
$10.8k once customs was paid
Retarders took a couple of months from ordering to rocking up back in Nov 2020, I then ordered the control system around feb this year.
Fabrication wise, I can't weld to save my life. Luckily one of my friends has a business that does Drill rig refurbs, so they produce a lot of replacement parts & thus have a Drafty & boiley's on staff.
So with a design done in cad.
they started fab a few months back (in-between jobs) & on friday we dropped one of the retarders into a frame after fitting wheels for test fitting, before final welds/modifications are done before it get's painted.
Originally we were going to use a hydraulic jack to adjust the angle of the dyno, but decided to go even simpler & use a turn buckle. Since i'm lazy & will probably set/forget it. Most cars I've used on hub dyno's are always supported under the diff anyway.
Still waiting on the various machined hubs & shafts, speed sensing will come from a 60 tooth reluctor that will get sandwiched to the shaft adapter.
Will update as we get more done, then show the electrical side.
I had received quotes over the years from Mainline & Dyno Dynamics, but could never justify the $95-110k asking price, since I can go weeks without using my existing one. So I then decided to go down the path of "building" my own, borrowing idea's from some existing units people had made already & publicized on youtube etc.
So i started investigating my options, I started with getting a quote for some retarders back in Nov 2019 from a local supplier.
CFK-390(192V) @$8,810 plus GST
CFK-500(192V) @$9,493 plus GST
Max Brake Torque NM - 3370 / 3820
Made by KLAM in Spain
Thinking bigger is always better, I went with the CFK-500's (realized i definitely went over-kill once they arrived)
Control System - Off the shelf from sportsdevices.com
SP6 - AWD capable/upgradable (If i want to make some smaller front pods later on)
$10.8k once customs was paid
Retarders took a couple of months from ordering to rocking up back in Nov 2020, I then ordered the control system around feb this year.
Fabrication wise, I can't weld to save my life. Luckily one of my friends has a business that does Drill rig refurbs, so they produce a lot of replacement parts & thus have a Drafty & boiley's on staff.
So with a design done in cad.
they started fab a few months back (in-between jobs) & on friday we dropped one of the retarders into a frame after fitting wheels for test fitting, before final welds/modifications are done before it get's painted.
Originally we were going to use a hydraulic jack to adjust the angle of the dyno, but decided to go even simpler & use a turn buckle. Since i'm lazy & will probably set/forget it. Most cars I've used on hub dyno's are always supported under the diff anyway.
Still waiting on the various machined hubs & shafts, speed sensing will come from a 60 tooth reluctor that will get sandwiched to the shaft adapter.
Will update as we get more done, then show the electrical side.