Brushless motors

[Dave MilbournParticipant @davemilbourn48782]

Bryan

Whereabouts do you live? Someone local may be able to pop round and assist.

I can endorse Paul's comments about Hawk ESCs; I have four and have had no problems setting them up with the card. The factory default settings are in the main OK but you will need to alter the model type to boat and probably also the number of turns on the motor.

Dave M

[BRYAN ASTONParticipant @bryanaston57723]

Greetings Harry

I have a nameless 60 amp brushless esc that I bought from the PRofC that runs perfectly without programming in default mode but it can only take 9.6 v ,to get the performance out of the big Huntsman that has.a Turnigy 1100kv motor in it ,I need a esc that can take at least .14.4volts, I have a couple of high voltage escs that can take .60 amp but I can only get them to run in one direction, I can't have a .42 inch Huntsman charging around the pond./lake with no brakes. thank you for your reply, I will win in the end.

Paul

I will contact Cornwall Models for a solution to my problems.

Thank you for your reply

Bryan

[harry smith 1Participant @harrysmith1]

Hi Bryan

I use the Hobbyking car ESC with the program card, these handle 2-4S Lipo batteries.

These run both directions, but I limit the reverse to 25%.

What Turnigy 1100kv motor is yours??

I have used the 3639-1100 on 3S and 4S Lipo but the rear mount D3548/4-1100kv is a stronger motor.

As Hobbyking has dropped a lot of the motors, I am working out what motors are still on the website.

Harry

[Dave MilbournParticipant @davemilbourn48782]

Harry

They are probably all still there; it's just that the new website is rubbish, especially the Search facility.

Dave M

[BRYAN ASTONParticipant @bryanaston57723]

Harry

The Turnigy motor I have in the Huntsman is D.3548/4 1100 kv and I want to run it on two 7.2 v nihm in series, I have had the best performance so far using a 700 series Johnston powered by two 7.2 v nihm in series, I wonder where I stored that motor?

I shall persevere

Bryan

[harry smith 1Participant @harrysmith1]

Hi Bryan

The D3548/4-1100kv may require a 4S(14.8) Lipo battery to get the best out of the motor.

My performance motor is the 3648-1450kv with a 4S Lipo, but, not in the Sea Commander.

Would empty the canal !!!

The new Hobbyking website, yes Dave you are right, rubbish!!!!!!!!!!!!

The November sale, I save a bit on, but with the new website they losted out on all the other bits I was planning to buy!!!

Harry

[Tim CooperParticipant @timcooper90034]

All

I am finding the thread interesting with the discussion on motors, props and batteries. Do you need to buy better prop shafts for brushless motors?

Tim

[Colin BishopModerator @colinbishop34627]

The required quality, and robustness of the propshafts. tubes and couplings will depend on the amount of power you are putting through them rather than the actual power source itself.

Colin

[Paul FreshneyParticipant @paulfreshney24971]

Colin is correct, but for normal use conventional prop shafts have been fine in the four scale models of mine that have brushless motors. These 4mm prop shafts are either the slim Graupner variety, or the larger brass 3/8 inch o.d. tube with sintered bearings. Lubrication for the top bearing is essential – I have a grease nipple on each tube and after each session put a drop of standard oil on the top bearing/shaft. The lower bearing is always lubricated by water and I have yet to have one wear out.

Mu Models by Design 1/16 scale fishing boat has a 300kv motor running on 7.4v and is very powerful (300w+), but the prop shaft is a standard one with a rubber coupling.

If rpm are to be high (ish), eg as in my Sievers Pilot boat with 950kv motors on 11,1v, then decent concentric couplings are essential – It is no good if they are out of line or not perfectly true as you will get vibration and noise. This boat has the slimline Graupner shafts and is now 4 years old.

My default now is to fit the rubber type of coupling and the drivetrains have been/are near silent.

Fast Electric boats are a very different ballgame though, usually using special prop shafts, bearings and tubes.

Paul.

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