Model Boat Mayhem - Forum

Please login or register.

Login with username, password and session length.
Pages: 1 [2]   Go Down

Author Topic: MAGIC SMOKE ALL THE WAY FROM HONG KONG  (Read 8430 times)

rmaddock

  • Full Mayhemer
  • *****
  • Offline Offline
  • Posts: 2,047
  • Location: The Lake District, U of K.
Re: Chineas 120A???? ESC
« Reply #25 on: June 16, 2012, 05:11:21 PM »

...what is the difference between English amps and Chinese ones?

It's like the difference between real time and Microsoft time.....you know, the one they show on progress bars.  {-)
Logged

john44

  • Full Mayhemer
  • *****
  • Offline Offline
  • Posts: 1,382
  • member of the Potteries Model boat club
Re: Chineas 120A???? ESC
« Reply #26 on: June 16, 2012, 05:16:49 PM »

Many thanks ACTion, btw, what is the difference between English amps and Chinese ones?
Many thanks,
Nick
Can,t wait for your comparative answer on that one Dave.

john
Logged

John W E

  • I see no ships !!
  • Full Mayhemer
  • *****
  • Offline Offline
  • Posts: 8,504
  • Location: South shields
Re: Chineas 120A???? ESC
« Reply #27 on: June 16, 2012, 05:19:52 PM »

Logged

Norseman

  • Full Mayhemer
  • *****
  • Offline Offline
  • Posts: 3,486
  • Location: Huyton, Liverpool
Re: Chineas 120A???? ESC
« Reply #28 on: June 16, 2012, 06:06:11 PM »

When a complete newbie I was recommended/sold a blue chinese esc by a local model shop  -  so it's not just an internet thing.
Fortunately I approached a proper boat modeller (about a problem I was having with a servo) and he warned me about the esc I had.
As he said 'all that work you'll put in to build / refurbish the boat and then you willingly put a match to it'.

Shouldn't it be a trading standards issue? Goods not fit for purpose / not as desribed / dangerous to children.

Dave
Logged

ACTion

  • Guest
Re: Chineas 120A???? ESC
« Reply #29 on: June 16, 2012, 06:19:42 PM »

We think that the Chinese manufacturers quote peak/surge current values while we Brit manufacturers tend to quote maximum continuous current handling capability. You should choose your ESC on the basis of the latter - the former has little practical meaning.
I have said elsewhere that it would be almost impossible to pass 110A continuously through a speed controller with that paucity of cooling and such thin cable. At 12v that would be 1320 watts, or more than a one-bar electric fire. Just check out the thickness of your average domestic cooker cable - yep - it's 6 sq.mm, and that is for a maximum of 30A.
Apart from fast electrics (which is a euphemism for ritual abuse involving motor, batteries and speed controller) you should not need anything rated more than 30A for "normal" modelling applications - not even with a noisy, hungry old beast like an 850.
If you need another opinion look no further than John Elsy's cautionary tale.
Ref Trading Standards, who's going to bother them - and do you think they will be bothered - for a five quid speed controller? Any serious issue they might have would be with the manufacturer, and these things are made in deepest darkest China.
Dave M
Logged

Norseman

  • Full Mayhemer
  • *****
  • Offline Offline
  • Posts: 3,486
  • Location: Huyton, Liverpool
Re: MAGIC SMOKE ALL THE WAY FROM HONG KONG
« Reply #30 on: June 16, 2012, 06:48:07 PM »

Hi Dave

As a trader you will know much much better than me what the trading standards people usually do/don't do.
I do know that in the past knowsley have seized toys deemed dangerous, and goods that are simply fake.
My main point is I just wouldn't buy a Chinese esc again, and as the 'Old Chestnut' is mentioned so often on
here, I wonder why people (who aren't newbies) still take the chance on losing an expensive boat.

Dave
Logged

Colin Bishop

  • Full Mayhemer
  • *****
  • Offline Offline
  • Posts: 10,222
  • Location: SW Surrey, UK
Re: MAGIC SMOKE ALL THE WAY FROM HONG KONG
« Reply #31 on: June 16, 2012, 07:40:28 PM »

If I'm making a model boat I don't want to worrry about whether a borderline Chinese cheapie will/won't do the job. I simply want something that will plug into the RX and just work. Life's too short. And so I will buy an ACTion or other reputable UK unit that will do just that. It's called value for money! Whatever you do, you can always get something cheaper and some people seem to pursue that as a goal but, as ever, you usually get what you pay for one way or another.

Colin
Logged

malcolmfrary

  • Full Mayhemer
  • *****
  • Offline Offline
  • Posts: 5,551
  • Location: Blackpool, Lancs, UK
Re: MAGIC SMOKE ALL THE WAY FROM HONG KONG
« Reply #32 on: June 17, 2012, 12:38:07 AM »

If I'm making a model boat I don't want to worrry about whether a borderline Chinese cheapie will/won't do the job. I simply want something that will plug into the RX and just work. Life's too short. And so I will buy an ACTion or other reputable UK unit that will do just that. It's called value for money! Whatever you do, you can always get something cheaper and some people seem to pursue that as a goal but, as ever, you usually get what you pay for one way or another.

Colin
You get what you pay for, but only after you pay for what you get.
in vino veritas, as it happens, at the moment.
Logged
"With the right tool, you can break anything" - Garfield

irishcarguy

  • Full Mayhemer
  • *****
  • Offline Offline
  • Posts: 2,374
  • Happiness is running from a grizzly and escaping
  • Location: Calgary N. W. Alberta, Canada
    • Britishcars International. org.
Re: MAGIC SMOKE ALL THE WAY FROM HONG KONG
« Reply #33 on: June 19, 2012, 07:31:56 PM »

In the Auto trade we talk of German horses & Japanese ponies & never the two will meet. Junk is Junk & if you are foolish enough to spend your hard earned money on junk you can't be saved from yourself. My policy when buying is research the the item I am buying, decide what I am going to buy & then search for where I can get the best price, but never forgetting service. This formula works for me 99% of the time. Mick B.
Logged
Mick B.
Pages: 1 [2]   Go Up