Model Boat Mayhem - Forum

Please login or register.

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

Author Topic: mersey class lifeboat problem  (Read 2549 times)

lordfortesque

  • Guest
mersey class lifeboat problem
« on: May 05, 2010, 04:03:33 PM »

Hi everyone i am having  an awful problem on first water trials sailing at full chat, turning left or right the bow digs in (it thinks its a sub)
never had this problem before and its got me baffled.
can anyone throw some light at this
cheers guys
mike.
Logged

DickyD

  • Full Mayhemer
  • *****
  • Offline Offline
  • Posts: 9,497
  • www.srcmbc.org.uk
  • Location: Southampton UK
    • SRCMBC
Re: mersey class lifeboat problem
« Reply #1 on: May 05, 2010, 05:35:48 PM »

Are your rudders turning to far and acting as a brake ?

35 degrees should be far enough.
Logged
Richard Solent Radio Controlled Model Boat Club http://www.srcmbc.org.uk

lordfortesque

  • Guest
Re: mersey class lifeboat problem
« Reply #2 on: May 05, 2010, 05:49:14 PM »

nope rudders are at 25 degrees
Logged

gribeauval

  • Full Mayhemer
  • *****
  • Offline Offline
  • Posts: 1,077
  • Tidy Bench -Tidy Mind, Messy Bench - BUSY!!
  • Location: Wakefield West Yorkshire
Re: mersey class lifeboat problem
« Reply #3 on: May 05, 2010, 07:08:05 PM »

Move your centre of buoyancy a little further aft (Shift the battery to the back a bit!!) to keep the nose a little high and make sure your trim tabs are not down. This is a problem that full size Merseys have.
Also slow down a touch on the turn, it's a Lifeboat not an F1 Hydroplane.  8)

Mike
Logged
True Lifeboat Nutter!!

lordfortesque

  • Guest
Re: mersey class lifeboat problem
« Reply #4 on: May 05, 2010, 08:00:27 PM »

thank you mike, thats an interesting coment but im not sure thats going to cure it because at the moment the bow is to high out of the water as it is when its running and i dont think it is over powered, im running two mfa 850s turning  4 blade 45 mm props
and when the boat is stationary it is balasted slightly arft.
mike
Logged

triumphjon

  • Guest
Re: mersey class lifeboat problem
« Reply #5 on: May 05, 2010, 09:06:08 PM »

so what scale is your model biult to ?  are your underwater fittings biult as to the origanal spec ?  i used to operate a 1/12 scale tyne class alongside a freinds mersey most weekends with no problems !
Logged

lordfortesque

  • Guest
Re: mersey class lifeboat problem
« Reply #6 on: May 05, 2010, 09:21:20 PM »

she is 1:12 scale built to drawings supplied by the RNLI.
any ideas
Logged

nemesis

  • Guest
Re: mersey class lifeboat problem
« Reply #7 on: June 01, 2010, 08:41:27 PM »

Hi, What batteries are you using? I have found that if you use SLAs as a power source in this model you may find that you are under the waterline. Solution could be to use lighter batteries to get the boat out of the water and up to the correct waterline.
                                                Nemesis
Logged
Pages: [1]   Go Up