Topic: NOOB needs help (lichfield) (Read 27895 times)

thebackways · « **Reply #100 on:** July 23, 2011, 11:35:46 pm »

yeah ive looked her up in the past ( i posted a pic of her original condition previously ) but my stepdad got annoyed that he couldnt get it to work, so he smashed it all up, then left her in the garden all winter...

lovely boke eh ?

MikeA · « **Reply #101 on:** July 23, 2011, 11:52:39 pm »

you get a different perspective of ya step dad once theyve split from your mum (i know) they seem t be allright in the end though.

funny the way things turn out

thebackways · « **Reply #102 on:** July 24, 2011, 01:12:19 am »

not with this guy... i can co-exist with most people...but there is really no getting on with him at all...im just glad he's gone now
i cant wait till he has taken all of his stuff so i dont have to see him again
then i can store the boats in the shed lol

Billyruffian · « **Reply #103 on:** July 26, 2011, 08:20:38 am »

Hi John,

Only just picked up your thread. I live just outside Lichfield in Hopwas and if I can be of any help just ask even though I am still learning myself. I'm a member at kingsbury model boat club and Burton. If you want to take a look at Kingsbury one Sunday morning I could always pick you up just send me a pm

thebackways · « **Reply #104 on:** July 26, 2011, 03:09:40 pm »

yeah, any help right now is a bonus. all the boats are now running ( albeit one needs a set of props ) but the main work will be building a whole new superstructure for the large tug.
which i feel is completly out of my depth having never attempted anything similar before

thebackways · « **Reply #105 on:** July 26, 2011, 11:58:34 pm »

also, after 5 mins of running around in the bath, the ESC got extreemly warm to the touch, is this a problem ? i dont want her cutting out or anything on the water :S
would a fan/ heatsync from a pc help to keep it cool ? or is it a sign that i should get a better ESC ?
originally she ran on 7.2V but after listening to advice i moved up to 9.6v

john s 2 · « **Reply #106 on:** July 27, 2011, 12:22:57 am »

Not bath,test tank lol.Check that your esc is rated for the voltage youre using. It should not get very hot.
What is the make? Try putting a fuse of the same or ideally slightly less than the rating of the esc in the
pos wire from the batt to the esc. Should it blow you are drawing too many amps. Sorry to hear youre still
having problems. John.

thebackways · « **Reply #107 on:** July 27, 2011, 12:47:26 am »

yeah i just took the sticker off the ESC to find her rated at 8.4v so im overvolting it on 9.6v unfortunatly...so i guess id better stick with 7.6 for the smaller tug and get a bigger ESC for the Alte Liebe
or continue my attempts to resurect the original ESC ( unfortunatly no more clicking thus far )

what would happen if i was to continue to overvolt the ESC ? would it burn out ?

MikeA · « **Reply #108 on:** July 27, 2011, 09:54:43 am »

dunno about running to much voltage but i had too bigger prop on my boat which made it over draw on amps. it resulted in lots of smoke!! And enough heat that if i had run into anylonger would have definately caught fire lol

definately recomend a fuze aswell. I bought this:
http://www.ebay.co.uk/itm/SELF-STRIPPING-INLINE-STANDARD-BLADE-FUSE-HOLDER-QTY-2-/190537693592?pt=UK_CarsParts_Vehicles_CarParts_SM&hash=item2c5cee7998

then bought a box of 30 mixed rated blade fuses for 99p at pound stretcher

if it was me as far as voltage is concerned i would just put the 7.2 back in better safe than sorry

john s 2 · « **Reply #109 on:** July 27, 2011, 05:12:03 pm »

Sounds like your esc might be what is called a gold brick. The Hitec Esc. These definately do not like to be
overvolted. With any esc running in excess of spec could cause failure. Best not to exceed its limits as esc
are not that cheap. Good luck John.

thebackways · « **Reply #110 on:** August 01, 2011, 12:27:53 am »

it is a 'gold brick' but its the only working ESC i have currently. ive emailed electronize about the larger ESC but they havent gotten back to me yet. unfortunatly no more sailing untill i can get the ESC issue sorted as im scared to have them burn out when a long distance from shore with no way to retreive it >_<

also got some large sheets of plywood to build the superstructre out of. mgiht be a bit thick, but £1 for 3 sheets 4ft square approx seemed to good to pass up

john s 2 · « **Reply #111 on:** August 01, 2011, 12:47:37 am »

If you wish you may find it better to ring electrolyse.Sadly model boats can fail out of easy reach. (sods law).
My padderler beached itself on a block of concrete today. Yes i knew it was there but thought as it was a
shallow draft boat id clear it. Wrong. Luckerly a long pole reached. To get back to the hitec esc.They are
very reliable but as said can not be overvolted keep to 7.2 v and all will be well. On the eletrolyse its worth
making sure that the sliding on off switch is ok. Ive had trouble with one. Just bridge across the terminals to
check. John.

MikeA · « **Reply #112 on:** August 01, 2011, 01:09:11 am »

how thick is this wood lol

thebackways · « **Reply #113 on:** August 01, 2011, 01:21:21 am »

UPDATE...
WE HAVE CLICKING FROM THE ESC
the motor instead of turning over emits a rather curious whine untill i push the stick up, then CLICK

also the plywood is 80cm x 80cm x50mm is this good enough ?

MikeA · « **Reply #114 on:** August 01, 2011, 09:35:25 am »

50mm thick ?!? as in 2 inches lol sureley you mean 5 mm

thebackways · « **Reply #115 on:** August 01, 2011, 09:37:40 am »

yeah i do. sorry typed at 1.20 in the morning...not that ive slept at all since then...but yeah
the clicking on the ESC is it changing from reverse into forward and back ( i think ) but ive still no moving probs
just different pitched wines from the motor >_<

MikeA · « **Reply #116 on:** August 01, 2011, 09:39:48 am »

is it like a high squealing wistling sound?

thebackways · « **Reply #117 on:** August 01, 2011, 09:47:57 am »

yeah, with increasing volume as i increase power but the pitch remains constant...this is the original ESC but not the original battery
original battery was a 12V 7.0aph lead acid battery
new battery is a 9.6v 4600mah Nimh pack but the battery will run the motor on the 7.2v ESC

MikeA · « **Reply #118 on:** August 01, 2011, 09:55:40 am »

my esc makes that noise i think its normal. i found something on another site:

"Yes it is normal for ESC's to do this. The ESC turns the battery power to the motor on and off at a high frequency varying the time on called the duty cycle, called pulse width modulation. The motor acts like a speaker amplifying this sound. Each motor depending on it's construction will either amplify or attenuate this sound. If it becomes a pain in the ear then the only way to stop it is to either change the ESC to another brand or change to a different motor"

thebackways · « **Reply #119 on:** August 01, 2011, 10:04:15 am »

but the issue isnt the noise...i dont mind the noise. its the issue of it not acually turning the motor at all its just making the motor make the noise in both the tugs...no movment...just noise >_<

MikeA · « **Reply #120 on:** August 01, 2011, 10:14:36 am »

have you tested it on aother motor?

thebackways · « **Reply #121 on:** August 01, 2011, 10:23:53 am »

yeah i tested it in both tugs...and a motor i have left over from a smashed up tank ( another of my stepfathers broken toys ) all produce the same annoying tone...but none of them spin the motor

MikeA · « **Reply #122 on:** August 01, 2011, 10:45:07 am »

have you checked the battery?

thebackways · « **Reply #123 on:** August 01, 2011, 10:51:01 am »

battery is fully charged, and it happens with all the 9.6v and the 7.2v batterys that i have ( i cant test the 12v battery as it only has one contact )

John W E · « **Reply #124 on:** August 01, 2011, 11:27:57 am »

Hi - to try and keep it dead simples for you and not to scare you off with all the technical stuff which you will get from the electrical wizards on here - hear goes ………

The hum or high pitched noise is coming from the motor windings on the armature.

As the speed controller switches the power on and off very fast, it makes the thin copper wire (which is wrapped around the centre armature) vibrate and just like a string on a musical instrument it makes a noise ….. simples

To stop it you can paint varnish or your wife's /your own nail varnish over the windings BUT NOT OVER THE COPPER PICK UPS AND BRUSHES but this means you have to dismantle the motor - easier to live with the noise I thinks.

aye
john

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Author Topic: NOOB needs help (lichfield) (Read 27895 times)

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