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Search: Posts Made By: whitecrest
Showing results 1 to 25 of 316
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Forum: Brushed/Brushless motors, speed controls, gear drives
08-20-2015, 11:28 PM
Replies: 2
Views: 951
Posted By whitecrest

Hard to say what it is from the pictures. You...

Hard to say what it is from the pictures. You may be stuck if you don't have the programming instructions.

I recall toggling the brake off on an old Tower Pro Mag 8 while at the field by...
Forum: Electric General Discussion
08-20-2015, 01:56 AM
Replies: 5
Views: 706
Posted By whitecrest

You can probably get better control of the...

You can probably get better control of the resting cell voltage by timing your flights. I personally don't rely on the LVC setting because it is generally too low, as you have noted. Just fly for...
Forum: Electric General Discussion
08-19-2015, 06:32 PM
Replies: 5
Views: 706
Posted By whitecrest

With an LVC of 3.2 volts per cell, you should...

With an LVC of 3.2 volts per cell, you should measure about 3.7 volts per cell after they have rested for a few minutes. It should not be lower than this or you risk shortening the life of the...
Forum: Brushed/Brushless motors, speed controls, gear drives
05-14-2015, 06:38 AM
Replies: 2
Views: 865
Posted By whitecrest

Try a regular servo in the throttle channel. If...

Try a regular servo in the throttle channel. If it and the other servos operate normally, the transmitter is probably Ok. If a brushless motor oscillates, one of the motor connections is bad and...
Forum: Electric Training
05-14-2015, 06:04 AM
Replies: 6
Views: 1,343
Posted By whitecrest

Hand launching works well. You'll have plenty of...

Hand launching works well. You'll have plenty of time to get back on the sticks. Be sure to always launch into the wind and be ready to provide a little up elevator to counteract the sink as the...
Forum: Electric General Discussion
05-13-2015, 05:56 AM
Replies: 1
Views: 304
Posted By whitecrest

Make sure the prop is mounted with the numbers...

Make sure the prop is mounted with the numbers facing forward. A prop mounted backwards will produce much less thrust.
Forum: Brushed/Brushless motors, speed controls, gear drives
02-05-2014, 05:28 PM
Replies: 8
Views: 688
Posted By whitecrest

It should climb very steeply. I used to fly a...

It should climb very steeply. I used to fly a Gentle Lady with a .049 years ago. That's about 100 watts using an inefficient prop (@6x3). It would climb fairly well if I could get a complete engine...
Forum: Electric General Discussion
01-28-2014, 06:40 AM
Replies: 8
Views: 1,006
Posted By whitecrest

The exact motor and prop will depend on the plane...

The exact motor and prop will depend on the plane you want to power. Generally, slower-flying planes like gliders and old-time designs use larger props and lower-Kv motors and faster planes like...
Forum: Brushed/Brushless motors, speed controls, gear drives
12-19-2013, 05:34 PM
Replies: 2
Views: 664
Posted By whitecrest

Extending the motor wires to the ESC presents no...

Extending the motor wires to the ESC presents no problems. Use reasonable gauge sizes to minimize any losses. It is only when you extend the battery-to-ESC wires that you can run into problems...
Forum: Electric General Discussion
12-14-2013, 08:42 AM
Replies: 5
Views: 522
Posted By whitecrest

Also: http://www.stevensaero.com/...

Also:
http://www.stevensaero.com/ (http://www.stevensaero.com/)
http://www.towerhobbies.com/
Forum: Electric General Discussion
09-09-2013, 06:09 AM
Replies: 5
KV
Views: 557
Posted By whitecrest

WeboCalc...

WeboCalc (http://flbeagle.rchomepage.com/software/webocalc_1.7.6/html/webocalc_imperial.html) can help answer questions like this. Just enter your plane's vital statistics (wingspan, wing area,...
Forum: Electric General Discussion
03-07-2013, 04:58 AM
Replies: 8
Views: 3,298
Posted By whitecrest

RE: Propeller advise for multiplex parkmaster

An 11x5.5 E prop is recommended for this plane. Here is an excellent review. Gas props sometimes perform well on electrics. Your APC 11x7 might work. However, electric props are generally lighter and...
Forum: Brushed/Brushless motors, speed controls, gear drives
02-20-2013, 06:00 AM
Replies: 6
Views: 7,427
Posted By whitecrest

RE: Electric motor stutters

Welcome to the forum!

Yes, that might be the ESC. If some of the FETs in one phase are bad, the motor will just oscillate or stutter. That might not affect the circuitry responsible for the...
Forum: E-Flight Power Sources
01-31-2013, 02:27 AM
Replies: 4
Views: 1,872
Posted By whitecrest

RE: E-Flite Power 15 high RPM vibration

Is there any vibration with the prop off? That ought to rule out any fundamental motor imbalance. I would think a mechanical imbalance in the prop or hub would be evident well before 6500RPM. It...
Forum: Electric General Discussion
09-21-2012, 05:25 AM
Replies: 2
Views: 783
Posted By whitecrest

RE: Remove retaining collar on motor shaft ?

I wouldn't take the collar off. It's there to securely retain the rotor assembly. It shouldn't be difficult to provide necessary clearance for the shaft and/or collar.
Forum: Electric Training
09-11-2012, 10:57 AM
Replies: 5
Views: 1,020
Posted By whitecrest

RE: EP Falcon rolling at take off ?

It sounds like it may not have adequate flight speed as you attempt to rotate. Could the wheels be binding during the roll out? In that case, a torque roll to the left seems likely. Perhaps a hand...
Forum: Brushed/Brushless motors, speed controls, gear drives
05-18-2012, 07:56 PM
Replies: 11
Views: 1,098
Posted By whitecrest

RE: reversing motor then back

No problem. Many motor wires are the same color.

Polarity must be observed when connecting the battery wires to the ESC (Red to Red, Black to Black) and the throttle plug to the receiver.
Forum: Brushed/Brushless motors, speed controls, gear drives
05-18-2012, 06:38 PM
Replies: 11
Views: 1,098
Posted By whitecrest

RE: reversing motor then back

Switch any two motor wires to reverse direction.
Forum: Brushed/Brushless motors, speed controls, gear drives
05-07-2012, 08:30 AM
Replies: 19
Views: 53,320
Posted By whitecrest

RE: How to compare electric motors and what do their specs mean.

Motor weight and Kv are useful criteria for comparing different motors. Figuring three watts per gram of motor weight is a good rule of thumb and will prevent motor overheating. Motor Kv indicates...
Forum: Brushed/Brushless motors, speed controls, gear drives
04-27-2012, 08:57 AM
Replies: 11
Views: 1,098
Posted By whitecrest

RE: reversing motor then back

It's probably stuck in the start-up algorithm until it reaches a critical speed allowing it to use normal EMF sensing of the rotor position to run in the correct direction. I've noticed that my...
Forum: Electric General Discussion
04-09-2012, 04:38 AM
Replies: 6
Views: 948
Posted By whitecrest

RE: Noisy Motor

This may be a timing issue, especially if you switched ESCs in the new plane. Programming the ESC for higher timing will often eliminate the screeching.
Forum: Electric General Discussion
03-14-2012, 06:10 AM
Replies: 9
Views: 1,071
Posted By whitecrest

RE: Wing area and weight question

I agree with BlvdBuzzard. You're about a pound overweight with just 270 sq.in. Given an average sport airframe, you should only need about 100-150 watts for excellent performance.

For...
Forum: Electric General Discussion
02-18-2012, 02:00 AM
Replies: 4
Views: 2,869
Posted By whitecrest

RE: Freeflight rubber power to RC electric ??

Lots of people are converting Guillows models to RC. Search for a few of those build threads, and you'll get a good idea what equipment they're using. There is a lot of micro gear available today at...
Forum: Electric Training
12-13-2011, 03:09 PM
Replies: 45
Views: 19,529
Posted By whitecrest

RE: Let's talk about servos - Whatever is on your mind

I used an ammeter to measure system draw without the motor on. That seemed to work well. With a 6-channel micro receiver, two HXT900s, and an 18 amp ESC, I measured about 40ma with the servos at...
Forum: E-Flight Power Sources
12-04-2011, 04:41 AM
Replies: 1
Views: 692
Posted By whitecrest

RE: Need help choosing a lipo and prop for a 50

A 12x6 seems to be a good match with the EFlite Power 25 on 11.1 volts. You will have to decide if the 12x6 will fit the plane and whether the thrust indicated will provide adequate performance. I've...
Showing results 1 to 25 of 316
 
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