Model Boat Mayhem - Forum

Technical, Techniques, Hints, and Tips => The "Black Arts!" ( Electrics & Electronics ) => Topic started by: Guy on February 07, 2008, 07:07:45 PM

Title: Advice on power...
Post by: Guy on February 07, 2008, 07:07:45 PM
Hi,

I have a small trent class life boat from model slipway, it is 500mm long and 180 wide. I have installed 2x M2 prop shafts with 30mm 3blade plastic props. They are run by 2 MFA torpedo 400 motors via an mtroniks viper 15 ESP and a 6 cell 2000mAh battery pack.
 
My problem is that the plastic props have broken, got damaged in the car and lost a blade or two on the water. Also she is slightly slower then I had hoped.

Can anyone point me in the direction of a supplier of brass props for M2 shafts?

Also i have now wired one motor the opposite way around so would therefore need one RH and one LH prop, is this correct for a twin screw boat?

Is there any way i can get more power out of this set up? The battery lasts a long time so more jucy motors could be an option but would i gain anything with out changing the battery?

Thanks for any advice, Guy
Title: Re: Advice on power...
Post by: alan colson on February 07, 2008, 08:40:37 PM
I had a 3 bladed brass prop made to fit an unusual size shaft a few years back. This was done for me by a company called SHG.
Hope this helps
Alan
Title: Re: Advice on power...
Post by: Shipmate60 on February 07, 2008, 08:43:27 PM
PropShop could supply off the shelf.
But dont know the situation since the takeover.

Bob
Title: Re: Advice on power...
Post by: Stavros on February 07, 2008, 09:16:20 PM
Try red bank models Wingertaz on the forum pm him


Stavros
Title: Re: Advice on power...
Post by: DickyD on February 07, 2008, 09:32:58 PM
Hi Guy, my 400 motors run on 7.2v
I am also making the George Turner MTB which he reckons will run well on the Graupner speed 400 motor with a 7.2v 2000mAh battery and a 2 blade 25mm prop.
The MTB is more or less the same size as your lifeboat.,
Dont know if this helps. :-\
Title: Re: Advice on power...
Post by: boatmadman on February 07, 2008, 09:48:34 PM
Try Gsitek props, they are good and give excellent service.

http://www.gsitek-props.co.uk/

Ian
Title: Re: Advice on power...
Post by: Guy on February 07, 2008, 11:37:02 PM
Thanks for all your help, I wish I had asked yonks ago!!

Its reassuring to hear other peoples tales ad tips.

Guy
Title: Re: Advice on power...
Post by: OMK on February 08, 2008, 12:52:07 AM
Its reassuring to hear other peoples tales ad tips.

How else do you think the rest of us got to be such smart asses?

Welcome aboard, amigo.
Title: Re: Advice on power...
Post by: Stavros on February 08, 2008, 05:51:07 PM
PMK never a truer word spoken in jest O0


Stavros