Model Boat Mayhem - Forum

Please login or register.

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

Author Topic: Hobbyking hydropro inception propellor question  (Read 749 times)

Mustang

  • Shipmate
  • *
  • Offline Offline
  • Posts: 23
  • Model Boat Mayhem is Great!
  • Location: Ireland
Hobbyking hydropro inception propellor question
« on: October 22, 2017, 09:16:50 AM »

Hi.....could someone please explain the size of the 2 supplied props with the inseption
One for 4s one for 6s.....my question is why is the prop on 4s  larger than the 6s.
I think the motor is 1300kv but not 100% sure.      Thank you.
Logged

JimG

  • Full Mayhemer
  • *****
  • Offline Offline
  • Posts: 373
  • Model Boat Mayhem is Great!
  • Location: Dundee
    • Dundee Model boat Club
Re: Hobbyking hydropro inception propellor question
« Reply #1 on: October 22, 2017, 11:54:02 AM »

The rpm of the motor is basically kV x voltage. It will therefore rev higher on the 6S pack than it would on the 4S pack. The higher revving motor will either need a higher current or a smaller prop to reduce the load. To keep the current within the maximum for the motor and esc they provide a smaller prop.

Jim
Logged
Dundee Model Boat club
http://www.modelboating.co.uk

martno1fan

  • Full Mayhemer
  • *****
  • Offline Offline
  • Posts: 2,457
  • Location: Blackpool
Re: Hobbyking hydropro inception propellor question
« Reply #2 on: October 23, 2017, 03:41:08 PM »

As Jim says ,basically they used the wrong setup in this boat in my opinion but for the money its a good boat however you must change the battery connectors for bullet connectors as the ones that come on it get way too hot and fail.5-6 mm bullets will work much better .
Logged

Mustang

  • Shipmate
  • *
  • Offline Offline
  • Posts: 23
  • Model Boat Mayhem is Great!
  • Location: Ireland
Re: Hobbyking hydropro inception propellor question
« Reply #3 on: October 23, 2017, 03:51:17 PM »

Thanks mart.....could you suggest a setup?  I personally think it is way over proped
I have changed the bullet connectors to 6mm and also a 200amp esc.
  Thanks again
Logged

martno1fan

  • Full Mayhemer
  • *****
  • Offline Offline
  • Posts: 2,457
  • Location: Blackpool
Re: Hobbyking hydropro inception propellor question
« Reply #4 on: October 24, 2017, 07:48:52 AM »

Personally id swap out the out runner for a water cooled in runner maybe a 4092 1600 kv on 6s .Boats pretty light so that motor should work .What i would also suggest is if your going that route remove internals and start again and while shes empty put a layer of glass cloth or carbon fibre inside using epoxy as these boats are very weak , a guy on another forum broke two first time out in light chop  {:-{ . Design of the boat seems good its an issue with the vaccum moulding where some areas are thinner than others.
Id change to an all in one flexshaft setup also and new hardware,sounds like a lot of work but i think its worth doing once the hull is strengthened .
Logged

Mustang

  • Shipmate
  • *
  • Offline Offline
  • Posts: 23
  • Model Boat Mayhem is Great!
  • Location: Ireland
Re: Hobbyking hydropro inception propellor question
« Reply #5 on: October 25, 2017, 07:03:49 AM »

Thanks all for the advise etc etc........looking for a new project now winter approaching 😣
Logged

martno1fan

  • Full Mayhemer
  • *****
  • Offline Offline
  • Posts: 2,457
  • Location: Blackpool
Re: Hobbyking hydropro inception propellor question
« Reply #6 on: October 26, 2017, 02:04:01 PM »

I have a new cat im producing shes 36"  long,a friend in Australia made the plug on his cnc machine im also looking to do some larger ones when i can afford to buy the plug and make new moulds .
Logged

Mustang

  • Shipmate
  • *
  • Offline Offline
  • Posts: 23
  • Model Boat Mayhem is Great!
  • Location: Ireland
Re: Hobbyking hydropro inception propellor question
« Reply #7 on: October 27, 2017, 12:09:22 PM »

Nice....I'm after something like a lifeboat etc.....so you make these boats?
Logged

martno1fan

  • Full Mayhemer
  • *****
  • Offline Offline
  • Posts: 2,457
  • Location: Blackpool
Re: Hobbyking hydropro inception propellor question
« Reply #8 on: October 29, 2017, 02:15:54 PM »

Yea been building hulls for over 8 yrs just shipped one of my  57" Arrow hulls to Newzealand .
Logged
Pages: [1]   Go Up