Who makes a dyno for brushless motors
 

What companys make dynos for brushless motors?

Speed Passion does

NEXUS RACING


http://www.nexusracing.com/product_i...oducts_id=2392

anyother ones beside the speedpassion?

try stormer hobbies
https://www.ssl-stormerhobbies.com/c...t.pl?pn=TPMC01

they have one

You should note that there is a difference between a motor checker and a dyno. A motor checker will check the motor without a load (Kv rating). Kv ratings stands for how many RPM's (K) per volt (v) without load. Be careful here, because you can make a motor look great if you are only looking at Kv. For example, small diameter rotors, weaker rotors, and high timing, will look outstanding for Kv ratings until you put a load on it. There are brushless motor checkers available, but keep in mind they are free spinning the rotor with no load. That's only half of the information you need.

Horsepower on the other hand, looks at the combination of RPM AND Torque. Adding a load to the test motor is necessary to determine it's true power.

HP (Watts) = RPM x Torque
746 Watts = 1 electric horsepower

The McPappy Racing DIY Brushless Dyno has just been released. There is a lot of information on the web site. Please visit the following link for the details: RC Brushless Chassis Dyno

* Updated version Dyno version 2.0. Click on the video or pictures for high resolution

+ YouTube Video

http://www.mcpappyracing.com/images/...sis_dyno_t.jpg
http://www.mcpappyracing.com/images/dyno/IMG_8051t.jpg
http://www.mcpappyracing.com/images/dyno/13_inch_t.jpg

McPappy Racing

I want to wake this forum up again to see what's new on the market. Im looking for either a DIY plan or a small unit.

We've made our dyno better by including a chassis dyno platform. So it can do all of the above, plus the added convenience of a chassis dyno.


http://www.mcpappyracing.com/images/...6358t_plus.jpg

http://www.mcpappyracing.com/images/dyno/IMG_6442t.jpg

http://www.mcpappyracing.com/images/dyno/IMG_6479t.jpg

I added some switches to mine to control different load levels for a better picture of the whole power band.
http://www.mcpappy.com/images/IMG_7398t.jpg
http://www.mcpappy.com/images/IMG_7394t.jpg

If you just have a single load, it's possible to make it optimal at that load level but fail at other levels. I found being able to hold it different load levels is better overall and is seen on the on the track.

McPappy are the only ones selling a brushless dyno setup, although for pure testing of brushless motors it comes with a lot of things you don't need, and still requires purchasing of all the electrics. All you need are:

1. A good balanced flywheel. Find a friend with a lathe, or get a machine shop to make one up. It's not a big job.
2. A Novak Sentry data logger (available from Novak)
3. A servo controller (a few dollars off eBay)
4. Some mounts and a safety shield (okay so you'll need some DIY skill for this bit).
5. A spreadsheet for doing all the calculations. There's a basic one knocking around somewhere from John Stranahan.

Here's my DIY unit which I built during last winter. It's been massively useful in motor analysis, ESC (boost) adjustment, gearing calculation etc.

http://www.rctech.net/forum/attachme...2531_small.jpg

The safety shield is vital. When I'm doing boosted testing that 300 gram flywheel is spinning at 40000RPM. If it comes off (which it has once) it could cause serious injury.

Fantom Dynos and TurboDynos can be set up to work also and you might find those used. All you need to do is add a receiver, radio and speed control. I am sure with a good electronics person could design a system that would replace the radio system as all you need with each of those is a way to make the ESC go to full throttle instantly.

The track is my dyno.:nod:

You only need a slave ESC, receiver pack, and a servo controller to use the Fantom Dyno with brushless motors.

With the TurboDyno you only need a slave speed control and a servo controller.

Dyno
 

I started working on a dyno last night. I had a fantom laying around and I was looking thru my stuff and found a ko propo positive negative adapter to abc to run a brushless motor that they gave away in Vegas one year. I soldered it to the dyno power wires and threw in a brushless motor . Hit run and it ran the motor showed a screen with rpm but no amp draw or other info . Anybody have any idea if I can make this work to show the amp draw and watts .

The track is my dyno too...lol.... No need to kill the fun with such tools....lol...