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Search: Posts Made By: mattnin
Showing results 1 to 25 of 500
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05-02-2009, 01:05 AM
Replies: 8
Views: 645
Posted By mattnin

RE: Lipo parallel? possible?

The only issue is what Access said, make sure they are about the same voltage before you try it. Otherwise it will work perfectly. Even if they are different C ratings, and different capacities, it...
04-25-2009, 03:06 PM
Replies: 146
Views: 57,399
Posted By mattnin

RE: Another brushless 'myth', lower KV = more torque

I'll be getting back my dyno middle of next week with a new upgraded amp sensor, so I'll be able to do that test

Matt
Replies: 210
Views: 15,389
Posted By mattnin

RE: Slash running with sc10

For everyone's information, at the Western Slope Challenge, a Slash took 2nd place. The Slash nearly TQ'd to a factory sponsored AE driver running a demo SC10. The final running order was SC10,...
04-15-2009, 11:57 AM
Replies: 56
Views: 7,967
Posted By mattnin

RE: Sheograth's SC10 build

Here are some pictures of mine. I put every single factory team part on it that I could, minus titanium nitride shock shafts only because the LHS is out. This truck has titanium turnbuckles, FT...
Replies: 12
Views: 1,043
Posted By mattnin

RE: Anybody got an SC10 I got some questions

T4 arms will break if you hit hard enough, but if you don't wreck much it isn't a problem. With my Factory T4, I broke a rear a-arm about 2 months ago and I don't even remember the last time I broke...
Replies: 12
Views: 1,043
Posted By mattnin

RE: Anybody got an SC10 I got some questions

It is too long for ST class. Here are some pictures of mine. I put every single factory team part on it that I could, minus titanium nitride shock shafts only because the LHS is out. This truck has...
03-20-2009, 12:51 PM
Replies: 146
Views: 57,399
Posted By mattnin

RE: Another brushless 'myth', lower KV = more torque

Ahh, I forgot about doing that test. I haven't done anything with the dyno past week since my laptop broke so I couldn't test anything at the track, but I should be able to do this test this weekend...
03-16-2009, 03:46 PM
Replies: 146
Views: 57,399
Posted By mattnin

RE: Another brushless 'myth', lower KV = more torque

I am using an RS Pro. I assume the 30 degrees of boost happens at all RPMs. It definitely makes the motor run warmer. After the dyno run, the motor was already at 144F. Yea, this dyno makes it draw a...
03-15-2009, 03:58 PM
Replies: 4
Views: 594
Posted By mattnin

RE: Factory Remanufactured Novak Anyone???

I have purchased a Novak remanufactured ESC and motor before, and they were what seemed like perfect condition, as good as new if you ask me. If it was marked as a new ESC, I wouldn't have known the...
03-14-2009, 11:12 PM
Replies: 146
Views: 57,399
Posted By mattnin

RE: Another brushless 'myth', lower KV = more torque

Access, I know what test you are referring to. That was the test that John Stranahan did. I did not run that test. I merely posted his results here.

Argess, the peak current I seen with the all...
03-14-2009, 10:02 AM
Replies: 146
Views: 57,399
Posted By mattnin

RE: Another brushless 'myth', lower KV = more torque

Argess, I do have a current measurement now. That is how I'm getting efficiency. If there is any test you are interested in, let me know and I will publish the #'s

Here is my novak 13.5 motor,...
03-13-2009, 08:32 PM
Replies: 146
Views: 57,399
Posted By mattnin

RE: Another brushless 'myth', lower KV = more torque

Access, you were wanting to know if the device takes consistent dyno readings, well here you go. This should eliminate all doubts :-) I ran a previous dyno test involving the hacker vs some more...
03-13-2009, 04:05 PM
Replies: 146
Views: 57,399
Posted By mattnin

RE: Another brushless 'myth', lower KV = more torque

30,000 is the max I'm willing to go more like it :P It gets pretty scary at those high RPMs. We'll just have to extrapolate past that for predicted RPM readings. The 7.5 is the lowest wind I feel...
03-13-2009, 01:45 PM
Replies: 146
Views: 57,399
Posted By mattnin

RE: Another brushless 'myth', lower KV = more torque

As requested, Novak 7.5 w/ sintered rotor (not bonded like said previously), and a Novak 13.5SS w/ sintered rotor.

http://arcadechamp.net/radio/DYNO/novak75vsnovak135.jpg

...
03-13-2009, 10:44 AM
Replies: 146
Views: 57,399
Posted By mattnin

RE: Another brushless 'myth', lower KV = more torque

http://arcadechamp.net/radio/DYNO/Novak1350boost1.jpg

http://arcadechamp.net/radio/DYNO/Hacker1350boost1.jpg

http://arcadechamp.net/radio/DYNO/Hacker-vs-Novak.jpg
03-12-2009, 09:23 PM
Replies: 146
Views: 57,399
Posted By mattnin

RE: Another brushless 'myth', lower KV = more torque

Argess, I only have another 7.5 Novak bonded older motor, a hacker 13.5, my novak 13.5, and a friends Novak 13.5 right now, but I plan on getting motors of all different winds to test. I will post...
03-12-2009, 05:05 PM
Replies: 146
Views: 57,399
Posted By mattnin

RE: Another brushless 'myth', lower KV = more torque

Here ya go guys, ran the Novak 13.5 vs. the Hacker 13.5. I'll let you draw your own conclusions.


Hacker 13.5
http://arcadechamp.net/radio/Hacker,%20Sentry%20Data.pdf

Novak 13.5
...
03-12-2009, 04:47 PM
Replies: 146
Views: 57,399
Posted By mattnin

RE: Another brushless 'myth', lower KV = more torque

I could actually quite easily come up with an equation for the graph coming after the throttle is released (friction). I am getting good at it as that is what we had to do to predict angular...
03-12-2009, 01:13 PM
Replies: 146
Views: 57,399
Posted By mattnin

RE: Another brushless 'myth', lower KV = more torque

Access, yes I am using a larger and heavier flywheel than the fantom. I will eventually dyno the 7.5 motor once over I get over my fears using this thing hehe. This thing spins up and I can tell it...
03-12-2009, 12:37 AM
Replies: 146
Views: 57,399
Posted By mattnin

RE: Another brushless 'myth', lower KV = more torque

Here you guys go, big preview of the dyno data spreadsheet. First posted here :D

http://arcadechamp.net/radio/Hacker,%20Sentry%20Data%20OO%20compat%20v2%20x%202.html
03-10-2009, 03:37 PM
Replies: 146
Views: 57,399
Posted By mattnin

RE: Another brushless 'myth', lower KV = more torque

Access, there is a very good reason why that torque curve is like that, it is because it is definitely inaccurate. See, I am having a problem with the dyno that I am not able to solve just yet. I...
03-09-2009, 09:29 PM
Replies: 146
Views: 57,399
Posted By mattnin

RE: Another brushless 'myth', lower KV = more torque

Access, I'll try that out and see what happens. I can measure efficiency now, I have the current sensor. The only motors I have are a hacker 13.5, novak 13.5, and a novak 7.5. I have a sensorless...
03-06-2009, 12:07 PM
Replies: 10
Views: 679
Posted By mattnin

RE: Custom Radio?

I modified a stick radio to work 'goofy foot' so to speak. My brain is also wired backwards and I was doing the exact same thing that you were. Here is a picture of my stick radio, and I love it. But...
03-05-2009, 07:46 PM
Replies: 146
Views: 57,399
Posted By mattnin

RE: Another brushless 'myth', lower KV = more torque

A spreadsheet is being worked out right now that will approximate, however very accurately, a correct angular acceleration at each RPM reading. I will paste a message from John Stranahan where he...
03-04-2009, 07:01 PM
Replies: 146
Views: 57,399
Posted By mattnin

RE: Another brushless 'myth', lower KV = more torque

Yea, I have a Novak 13.5 but I loaned it to James. I will be getting it back on Saturday at the races. I will be doing tests on everything soon with the current tester as well. However, there may be...
Showing results 1 to 25 of 500
 


 
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