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Old 09-10-2016, 04:54 PM   #16
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Default Voltage Monitoring

Question,are you also monitoring input voltage to the test motor side,because as amp drawn goes up voltage is dropping off,and are you able to adjust it to keep it constant, the whole reason a dyno can work correctly is to keep things constant,if you can't do this then its a total waste of time.Ive seen first hand how much the voltage drops off,and a normal 7.4 V pack is not good enough,you need to start at a 3C pack 11.1 V,that's if you plan to run your tests at 7.4 V
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Old 09-11-2016, 03:50 AM   #17
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Originally Posted by mendez View Post
On a given motor ,let's say a 17.5 , how long does it take to spool up with this wheel ?
I will get back with you to check. But usually a few seconds because i want as much points as possible
That's my worry, that the flywheel might not be heavy enough for more powerful 540 motors (I use 10.5T motors with dynamic timing, for example)...

When I saw the belt, I thought that it was a great idea, you could run the flywheel with an overdrive (where one rotation of the motor spins the flywheel by more than one), to give similar results as an heavier flywheel, but the gearing appears to be the wrong way around for that!
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Old 09-26-2016, 07:25 PM   #18
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I have some questions about this product.

Is the amperage sensor included?
How do you calibrate the sensors?
What is the sample rate of each included sensor?
Is the flywheel balanced before it is shipped?
There seem to be many things you've said will be upgraded, will these features be included at a later date, or sold at an additional charge?
The price listed most places is $299, but your website lists the product at $359, why the extra $60?
What is your development plan for the future, and when do you expect these developments to be available?

Thanks!
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Old 10-11-2016, 08:35 PM   #19
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Hey Guys,

Sorry for my late reply, I've been super busy.

So I will try to answer all the previous questions now:

Pphaneuf:

The amount of time it takes to spin the flywheel depends by your motor…Ex. For a 21.5T (high torque) the flywheel needs to be heavier (more inertia) than a 10.5T motor. Now, I have available heavier (steel) flywheels – 1063grams. we will upload a video this week.

KTJeffries:

1. The current/voltage sensors are not included
2. All of our sensors are calibrated before shipment. No need calibration.
3. A bit over 100hz is the frequency
4. Flywheels are balanced before shipment
5. All of our “additional items” are sold separately
6. Where did you see $299 ?
7. More features like the LCD and our own current sensors (not attopilot) will be available this month. This week you can pre-order both. As for the throttle Controller, it will be available in November.

Here is a quick picture of the Color & Touch LCD Screen. Hope you guys like it!
Jose
Attached Thumbnails
minipro 540 motor dyno-20161010_221813.jpg   minipro 540 motor dyno-20161011_230745.jpg  
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Old 10-11-2016, 09:02 PM   #20
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So how is this better than the Eagle Racing md2 dyno? Will your dyno results be compatible with the RC Crew Chief software many of us use?
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Old 11-02-2016, 10:27 PM   #21
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So how is this better than the Eagle Racing md2 dyno? Will your dyno results be compatible with the RC Crew Chief software many of us use?
Hi Nexxus,

How is our dyno better than MD2? In my opinion:

1- Our flywheels are covered; thus, safer. A mass spinning 20-30K it's very dangerous.

2. We offer different flywheels - light and heavy weight flywheels.

3. If you decide to make your own dyno, we sell the electronic board and flywheels separate and use our software.

4. Our software is FREE. We update it every month. For example - these month we added one new chart: RPM, VOLT, and Current vs. Time in Real-Time. We are adding a lot more charts soon!

5. Heavy duty, and easy to carry-on.

6. You can test motors with different size of shafts (3.175 or 5mm shafts) because we offer different pulleys.

7. Difficult to find online? Support? I can over and over......but again, it's my opinion.

As for the RC Crew Chief, we are not compatible at this moment.
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Old 11-03-2016, 03:40 AM   #22
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Quote:
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4. Our software is FREE. We update it every month. For example - these month we added one new chart: RPM, VOLT, and Current vs. Time in Real-Time. We are adding a lot more charts soon!
Free as in "free beer", or as in "open source"? If the latter, that would be fantastic.
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Old 11-03-2016, 04:35 PM   #23
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Originally Posted by mendez View Post
You can do a direct connect if you want too, but we do not offer the motor holder at this moment.
What adapter will I need to purchase to do a direct connection? I see on the web site that the steel flywheel has a 3.3mm=0.130" bore, but the motor shaft is 0.125". 0.005" difference is quite a bit of slop!
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Old 11-03-2016, 06:14 PM   #24
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I want one but hope you offer a package deal that has all the sensors and whatnot to accurately test and compare battery motor ESC setups .
And would also be really nice if it was compatible with Android so we could attach to our phones to activate or read ... Even a wifi or Bluetooth would be amazing also
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Old 11-05-2016, 11:06 AM   #25
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6. Where did you see $299 ?
It was included in the advertisement for the dyno:
http://rchub.com/minipro-revin-motors-all-over/
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Old 11-05-2016, 11:10 AM   #26
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I have a question regarding the dyno

1) The dyno is gear reduced 2-1 between the motor and the flywheel. This means the flywheel is spinning 1/2 the rate of the motor and is also 1/2 the load against it. Does this gear reduction cause any problems with the software that would make it unusable on other flywheel dynos that are 1-1 direct drive?
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Old 11-06-2016, 12:01 PM   #27
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Free as in "free beer", or as in "open source"? If the latter, that would be fantastic.
hehe...free beers for now.
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Old 11-06-2016, 12:09 PM   #28
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What adapter will I need to purchase to do a direct connection? I see on the web site that the steel flywheel has a 3.3mm=0.130" bore, but the motor shaft is 0.125". 0.005" difference is quite a bit of slop!
So, the adapter is not on sale yet, but we will add it to our website this month. Please see attachment for an old prototype we made. The direct will have a joint design because we want to capture different size of motors (3.175mm, 4mm, 5mm...and so on)
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minipro 540 motor dyno-20161105_110102.jpg  
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Old 11-06-2016, 12:18 PM   #29
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Originally Posted by lawton70 View Post
I have a question regarding the dyno

1) The dyno is gear reduced 2-1 between the motor and the flywheel. This means the flywheel is spinning 1/2 the rate of the motor and is also 1/2 the load against it. Does this gear reduction cause any problems with the software that would make it unusable on other flywheel dynos that are 1-1 direct drive?
Good Question...so, first, our software is only compatible with our board.
Now, you can change the ratios in the software - you can have a 1:1 , 2:1, 1:4, what ever you want.... Please see attachment for screen capture of our software settings
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minipro 540 motor dyno-untitled.png  
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Old 11-06-2016, 12:24 PM   #30
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hehe...free beers for now.
Possible to get the spec for the protocol, so we can write our own?
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