Model Boat Mayhem

Mess Deck: General Section => Chit-Chat => Topic started by: Boatbuilder2011 on June 15, 2011, 04:28:44 pm

Title: I Learnt a valuable lesson today
Post by: Boatbuilder2011 on June 15, 2011, 04:28:44 pm
I learnt such big lesson today one I won't repeat again :( I decided to go to our club pond still as a new member I don't no the code to the rescue boat so I put the pt boat in water took it out to the centre of the lake and bank me being an idiot didn't super glue or thread lock the prop on :( stupid mistake I no having no momentum and no way getting the rescue boat on the water as it's chained down I started to panic I was thinking of what I had in the car to help and found a tow rope and tennis ball after 30 mins off throwing it out and gently bumping it against the boat I finally got it in big time lesson learnt :( has any one else ever done anything like this
Title: Re: I Learnt a valuable lesson today
Post by: Circlip on June 15, 2011, 05:20:29 pm
Seen this a few times before. Screw threads are normally RH threads so having a prop that screws onto the shaft clockwise when looking at the shaft end means that to ensure the prop stays on, the shaft should rotate anti - clock so you need a prop that generates thrust when rotating anti - clock.

  Before anyone jumps in with "It's a PT boat, so multi propped", retrieval wouldn't have been a problem, one of them would have been going the "Right" way.

  For the clock rotation fraternity, a locknut on the shaft in front of the prop would not go amiss.

  Regards  Ian.
Title: Re: I Learnt a valuable lesson today
Post by: nhp651 on June 15, 2011, 05:47:02 pm
easily done, boatbuilder........you won't be the last.
after my first time with an expensive large prop i for ever after lockeked it up with a backing nut and then drilled through the propeller boss and secured it with a small split pin made from thin brass wire.never lost another since.
neil.
Title: Re: I Learnt a valuable lesson today
Post by: Martin (Admin) on June 15, 2011, 06:31:37 pm
I know the feeling!

http://www.modelboatmayhem.co.uk/Builds/S130/images/Prop%20boing.MOV

http://www.modelboatmayhem.co.uk/Builds/S130/Part_4.htm
Title: Re: I Learnt a valuable lesson today
Post by: triumphjon on June 15, 2011, 07:58:05 pm
think most modellers have at some time either lost or broken a blade or more from a prop , mine are all locked to the shafts with the locking nut .
Title: Re: I Learnt a valuable lesson today
Post by: RaaArtyGunner on June 15, 2011, 11:16:20 pm
easily done, boatbuilder........you won't be the last.
after my first time with an expensive large prop i for ever after lockeked it up with a backing nut and then drilled through the propeller boss and secured it with a small split pin made from thin brass wire.never lost another since.
neil.

 :-)) :-))
Title: Re: I Learnt a valuable lesson today
Post by: john s 2 on June 16, 2011, 03:31:21 pm
Yup. I lost the prop on my first boat. Did what a well known boat shop said, (do it up tight) Lost it of course.
Now use a lock nut.. Did the shop know id lose the prop and buy another?. John.