Glitching Boat Problems

[WesleyC]

I just bought a kyosho wave master last week. I get it in and put in all my electronics center the steering setup the ESC and test eveything on the bench and it works great. I put it in the water for a quick run around the pond and it is real glitchy. I hit the throttle and it's real sparatic and the sterring servo goes absolutly crazy. What am i doing wrong with my setup? I have a duratrash blast ESC that came with it a futabs 2ph TX and RX and s standard 3003 servo. Please help

[4bells]

Do you have capacitors installed between the motor leads? http://www.loyalhannadockyard.com/Motor%20Noise%20Suppression.htm

http://davesrcflight.mysite.wanadoo-members.co.uk/frame_pages/electric_flight_frame2.htm#Interference%20suppress ion.

[WesleyC]

No I don't I'll try that. But why would it glitch in the water and not on the stand?

[Umi_Ryuzuki]

The metal prop shaft grounds the boat?

Is the connection from the motor to the shaft a metal or plastic ?
Some other RTR boats were getting "RF" because of a metal u-joint at that connection.

[WesleyC]

Umi It's a dolphin II motor (I know it's not a great motor) I think it is a metal on metal connection and that was my first thought was a grounding issue. How can I fix it? Would the capacitors help any with that?

[Kmot]

No I don't I'll try that. But why would it glitch in the water and not on the stand?
Because you are only a couple feet away from your boat.

Have you done a range test? With the antenna collapsed walk away from your model and see how far you get while still having control and no glitching. You should be able to get at least 50' away. Do this while making the motor run. I bet you will see glitching while it is on the stand.

Now, you will still need to do something about it.

BTW, I have a Kyosho Speed Vee with the same Dolphin setup and there is no glitching because of the motor.

[ropanach]

If your wireing is running to close to the drive shaft & motor this will cause glitching, make sure your antani is also running away from motor & shaft, but do install three 1u resesters to the motor, here is a pic of how it should be ran, if you have all readey done all this, then check to see it there is a cell phone tower close by, this will all so glitch out your boat, good luck.

[Shaun Hendricks]

Also check your battery connector. If you are using Tamiya (white) connectors, you may be introducing RF interference in the form of an arcing battery connection.

[WesleyC]

Kmot
I experienced the glitching just in a bath tub test and I tried it with TX antenna up and down still with the same result. I will have to try the resistors and let ya'll know what happens.

ropanach
thanks for the diagram I will give that a try.

Shaun
I am using deans connectors with this setup. but i will also check my soldering job on those to make sure it's not my connectors.

[Shaun Hendricks]

Wesley, unlikely a soldering problem with Deans. If you can't casually tug them apart, your solder job is likely good. I'd look elsewhere like the capacitor issue.

[thething84]

i sure somewhere i heard, that the reason they only glitch in water, is bacuase there is a strain on the motor.

[charge1(ds)]

I heard the mention of resistors. That would be bad. That is liek shorting it with a small load. You want .1 Microfarud capacitors .1 uF with afunky U mining micro. Any arking will cause rf glitching. Did you break in the motor? Those area's where the brushes meet the comm. Unless borken in will cause serious arking. Break in the motor. Run it slowely on your bench. Give it the good portion of a pack. Then test for glitching in your tub and see how it goes.

[Umi_Ryuzuki]

heard the mention of resistors. That would be bad. That is liek shorting it with a small load. You want .1 Microfarad capacitors .1 uF with afunky U mining micro.

Nice Catch... :cool:

[WesleyC]

sorry I meant caps I'm going to pick them up today from the shack

[LtDoc]

WesleyC,
Am I understanding you correctly, you've only done testing in a bathtub? Haven't done a range test as recommended?
The capacitors are a very good idea for any brushed motor, and I would recommend you putting them on yours. I'd also recommend the range test that 'Kmot' suggested, since the transmitter and receiver being that close can certainly result in 'glitching', even when everything is just fine (signal overload).
Good luck.
- 'Doc

[WesleyC]

Doc I have put it in the tub and in the pond near my house it glitches in both. How ever I was about the same distance from the boat in both cases. I will do the range test as suggested later today or tomorrow along with the caps and let you guys know how it pans out.

[WesleyC]

Just wanted to thank all you who helped with this. The caps solved the problem. now I need to get a water jacket for the motor and battery and I should be good.