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Author Topic: my surface drive mfa piranha  (Read 1944 times)

mattf1000

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my surface drive mfa piranha
« on: December 17, 2014, 06:47:09 PM »

I've decided to go all modern with my boat with these new fangled lipos and brushless  motors. My set up was going to be ic but it's noisy and complicated. I have a surface drive set up with a octura x640 prop and need some motor, esc and lipo  options. I understand  brushed motors and nicads etc but nothing about brushless. So any help would be great  cheers
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Stavros

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Re: my surface drive mfa piranha
« Reply #1 on: December 17, 2014, 08:49:18 PM »

Where in North Wales are you from
 
Dave
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mattf1000

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Re: my surface drive mfa piranha
« Reply #2 on: December 17, 2014, 09:02:22 PM »

Flintshire mate. I've been messing with boats and cars for years. Built a f1 type tunnel hull from scratch out of balsa. That was really quick. I'll use the piranha  as a hack before I build another tunnel hull. And all the other projects I have plans for
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Mad Scientist

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Re: my surface drive mfa piranha
« Reply #3 on: December 17, 2014, 10:58:08 PM »

FWIW, when North Wales was mentioned, I thought of Component-Shop. They have added brushless motors to their product line. Inrunners and outrunners.

Tom
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mattf1000

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Re: my surface drive mfa piranha
« Reply #4 on: December 17, 2014, 11:14:53 PM »

Yes I heard of them but need to know what to get. I've no idea what size motor will work with that prop
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Stavros

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Re: my surface drive mfa piranha
« Reply #5 on: December 18, 2014, 08:50:05 AM »

40mm racing prop might be to much for a brushless motor BUT i will stand corrected on this one
I would suggest
 
 
 http://www.hobbyking.com/hobbyking/store/__18229__Turnigy_D3536_9_910KV_Brushless_Outrunner_Motor.html
 
and this
 
http://www.hobbyking.com/hobbyking/store/__15133__Hobbyking_SS_Boat_Series_125A_ESC.html

Dave
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mattf1000

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Re: my surface drive mfa piranha
« Reply #6 on: December 18, 2014, 08:55:06 AM »

Diameter: 1.57"(40mm)
 Total Pitch: 1.6x1.57=2.512"
 Shaft Size: 3/16
hope that helps
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Subculture

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Re: my surface drive mfa piranha
« Reply #7 on: December 18, 2014, 05:01:12 PM »

If it's surface drive you're going to a need a bit of revs aren't you?

mattf1000

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Re: my surface drive mfa piranha
« Reply #8 on: December 18, 2014, 05:08:00 PM »

Spoke to Prestwich Models today who recommend a 1200W  1900 KV motor, 120A esc and 4s lipos. So hopefully will make quite a nippy little boat
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