10-04-2017, 01:15 PM | #1 |
owner, Holmes Hobbies LLC Join Date: Nov 2004 Location: Volt up! Gear down!
Posts: 20,290
| Have tech questions? Will answer.
Post up electronics tech questions and I'll do my best to answer them until I burn out. It would be great to have some distractions from the circus of memes on facebook. I'll start first. HOw are the electronics on the TRX-4? answer: Servos are easy to burn out, steering servo is undersized for the weight, needs at least 300oz/in. ESC and motor are adequate, but don't have much control getting through a bind. |
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10-04-2017, 01:23 PM | #2 |
Yashua Join Date: Sep 2010 Location: Learn the parable of the fig tree
Posts: 3,661
| Re: Have tech questions? Will answer.
Do I need a BEC? Thanks for your dedication John . Bob |
10-04-2017, 01:26 PM | #3 |
owner, Holmes Hobbies LLC Join Date: Nov 2004 Location: Volt up! Gear down!
Posts: 20,290
| Re: Have tech questions? Will answer.
If you are running anything except an SHV500 servo, yes you do Just got v2 SHV which is 2s through 4s direct power compatible. Its super quick on 4s. |
10-04-2017, 02:00 PM | #4 |
Rock Crawler Join Date: Jul 2013 Location: Kansas City
Posts: 760
| Re: Have tech questions? Will answer.
What is the best way to break in brushes that are NOT from HH? In a glass of water?? Do I just run the motor and then break it down and clean the can and armature?
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10-04-2017, 02:48 PM | #5 |
owner, Holmes Hobbies LLC Join Date: Nov 2004 Location: Volt up! Gear down!
Posts: 20,290
| Re: Have tech questions? Will answer.
If they are serrated face, 3 minutes at 3v and then spool it up once on pack voltage. If they are curved face, same thing but keep checking the face every minute until broken in. If the curve is wrong it may take a little while. If they are flat face and you don't have a brush shaper , go ahead and pull out the cup of water and be prepared to dry and reoil after. |
10-04-2017, 03:31 PM | #6 |
Pebble Pounder Join Date: Dec 2013 Location: Island County
Posts: 110
| Re: Have tech questions? Will answer.
An old myth I have heard among flyers: Running a brushless motor at partial or lower throttle is harder on the motor, making the esc/motor work harder and hotter, than higher or full throttle. Example here, If I'm running my Puller Pro Standard 2700 KV at a little under 1/4 throttle for an extended time, it is harder on the motor than running it at higher throttle, around 50-60% for a while. Any truth to this? |
10-04-2017, 03:44 PM | #7 | |
I wanna be Dave Join Date: Jun 2017 Location: Humboldt county
Posts: 4,482
| Re: Have tech questions? Will answer.
I've also heard that electric motors are happiest when they are spinning faster. Quote:
What does it take to get the broader range in voltage? | |
10-04-2017, 04:19 PM | #8 | ||
owner, Holmes Hobbies LLC Join Date: Nov 2004 Location: Volt up! Gear down!
Posts: 20,290
| Re: Have tech questions? Will answer. Quote:
Quote:
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10-04-2017, 05:32 PM | #9 |
Newbie Join Date: Jun 2013 Location: North Carolina
Posts: 26
| Re: Have tech questions? Will answer. HH Torquemaster BR Mini Dual connections I posted that thread and then found this 1 and thought as owner of HH, who better to ask questions! |
10-04-2017, 07:24 PM | #10 |
Rock Crawler Join Date: Apr 2015 Location: Paola, ks
Posts: 925
| Re: Have tech questions? Will answer.
In the brushed world, where would the puller 400 compare to a brushless? Sent from my SM-N920V using Tapatalk |
10-04-2017, 07:36 PM | #11 |
Rock Crawler Join Date: Apr 2015 Location: Paola, ks
Posts: 925
| Re: Have tech questions? Will answer.
What is the difference between your waterproof version and regular puller pro? I bought this 3500 used and was told it's not the water proof version, but the sensor boards looked coated when I pulled it apart to silicon conformal coat them. Sent from my SM-N920V using Tapatalk |
10-05-2017, 09:11 AM | #12 | |
Rock Crawler Join Date: Jul 2013 Location: Kansas City
Posts: 760
| Re: Have tech questions? Will answer.
2 Quote:
Edit: during the break in , the motor in or out? Is it best connected to the drive line or no? Last edited by realsickclown; 10-05-2017 at 09:15 AM. | |
10-06-2017, 11:05 AM | #13 |
Quarry Creeper Join Date: May 2009 Location: Scotland, UK
Posts: 401
| Re: Have tech questions? Will answer.
Apart from the bearing on shaft output end of the motor, what are the differences between the Trailmaster Sport 550 motors and the Traxxas Titan 21t 550 motors?
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10-06-2017, 02:23 PM | #14 | |||
owner, Holmes Hobbies LLC Join Date: Nov 2004 Location: Volt up! Gear down!
Posts: 20,290
| Re: Have tech questions? Will answer. Quote:
Quote:
Quote:
This is what we use to shape brushes- Fussy Brush Kit - Parts and Accessories - Motors Much better magnets. The Trailmaster stalls less and handles more predictably in a bind. | |||
10-06-2017, 03:44 PM | #15 |
Pebble Pounder Join Date: Nov 2013 Location: Southeast MI
Posts: 153
| Have tech questions? Will answer.
Can the little 0.5A BEC on the TorqueMaster mini BR support a small light bar like this: https://www.horizonhobby.com/product...20-p-los230005 If not, how about the two BECs together with the Mini BR Dual? (I’m using the Nightcrawler body for a MOA build ) Thanks! Last edited by karajabola; 10-06-2017 at 03:49 PM. |
10-06-2017, 05:08 PM | #16 |
Newbie Join Date: Oct 2017 Location: Australia
Posts: 28
| Re: Have tech questions? Will answer.
What can you run 4s on in your puller brushless motor series? Sent from my iPhone using Tapatalk |
10-06-2017, 10:43 PM | #17 | |
owner, Holmes Hobbies LLC Join Date: Nov 2004 Location: Volt up! Gear down!
Posts: 20,290
| Re: Have tech questions? Will answer. Quote:
3500kv is awesome on it, racing or otherwise. 4500 hasn't been tested on the track running 4s, it would be pretty uncontrollable power though. | |
10-06-2017, 11:48 PM | #18 |
I wanna be Dave Join Date: Sep 2012 Location: Victoria, BC
Posts: 2,257
| Re: Have tech questions? Will answer.
What's the improvements / differences on the v2 500 series servos vs. v1?
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10-07-2017, 03:36 AM | #19 |
Pebble Pounder Join Date: Aug 2016 Location: N/A
Posts: 178
| Re: Have tech questions? Will answer.
Dear JRH: For a scale crawling application, everything else being equal, which setup would give more torque? 1) Puller Pro 2200kv, OR 2) Puller Pro 2700kv geared down to operate at approximately the same vehicle speed as the 2200kv. |
10-07-2017, 09:43 PM | #20 |
I wanna be Dave Join Date: Dec 2009 Location: Outside DC
Posts: 2,997
| Re: Have tech questions? Will answer.
JRH, I usually gear down my drivetrain (axles, spur and pinion) for better torque and smooth startup. I always use a shallow throttle curve with high startup. Typically using puller pros and ble. I always get confused on KV though. Given the previous...what would be better for torque and slow crawling? 2200, 3500 or negligible difference? Would a 3500/2700 with throttle EPAs shortened feel the same as a 2200 wide open at startup? Thanks in advance. Just reread Mav's post...kind of similar...edit: Does a throttle curve significantly change the amount of power or torque to a given KV motor? Last edited by Bulldog; 10-07-2017 at 09:48 PM. |
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