Model Boat Mayhem - Forum

Please login or register.

Login with username, password and session length.
Pages: [1] 2   Go Down

Author Topic: water pump as an exhaust  (Read 4986 times)

gregforward27

  • Shipmate
  • *
  • Offline Offline
  • Posts: 11
  • Model Boat Mayhem is Great!
  • Location: bradford
water pump as an exhaust
« on: January 10, 2014, 04:42:19 PM »

Hi there im new today to this forum. I have a 1/16 th trent lifeboat and i am trying to make water pulse out of my exhausts when running. can anyone mabe help me solve it and what water pump i would need if any and setting up ? Many thanks guys :)
Logged

gregforward27

  • Shipmate
  • *
  • Offline Offline
  • Posts: 11
  • Model Boat Mayhem is Great!
  • Location: bradford
Re: water pump as an exhaust
« Reply #1 on: January 10, 2014, 04:43:43 PM »

I HAVE BEEN TOLD I CAN USE A CAR FLASHER ???? TO MAKE THE WATER PULSE
Logged

Rottweiler

  • Full Mayhemer
  • *****
  • Offline Offline
  • Posts: 2,173
  • Location: Carharrack Cornwall
Re: water pump as an exhaust
« Reply #2 on: January 10, 2014, 06:34:09 PM »

use a servo with  the gears taken out, and a double arm horn that when revolving gently compresses the waterpipe,this will then give you an intermittent outflow.
Mick F
Logged

gregforward27

  • Shipmate
  • *
  • Offline Offline
  • Posts: 11
  • Model Boat Mayhem is Great!
  • Location: bradford
Re: water pump as an exhaust
« Reply #3 on: January 10, 2014, 06:56:41 PM »

sounds good but a bit technical for me at the mo :-)
Logged

gregforward27

  • Shipmate
  • *
  • Offline Offline
  • Posts: 11
  • Model Boat Mayhem is Great!
  • Location: bradford
Re: water pump as an exhaust
« Reply #4 on: January 10, 2014, 07:39:49 PM »

Would the be another option on this. just seems to me as a bit difficult :)
Logged

malcolmfrary

  • Full Mayhemer
  • *****
  • Offline Offline
  • Posts: 5,564
  • Location: Blackpool, Lancs, UK
Re: water pump as an exhaust
« Reply #5 on: January 11, 2014, 10:51:23 AM »

I HAVE BEEN TOLD I CAN USE A CAR FLASHER ???? TO MAKE THE WATER PULSE
The direction indicator control box is just an interactive relay.  Put power on, it repeatedly switches its contacts on and off until you turn it off.  Using it to power the pump rather than lights, the pump will pulse.  If you've ever had an indicator bulb fail, you will have noticed that the indicator then flashes a lot faster.


Quote
use a servo with  the gears taken out, and a double arm horn that when revolving gently compresses the waterpipe,this will then give you an intermittent outflow.
Surely leave the gears in and remove the electronic bits, just leaving the case, gears and motor.  Apply power to the motor, you get a slowly rotating output shaft.  A cam on that (preferably a roller cam) would act like a peristaltic pump in reverse, it would compress a soft rubber tube enough to interrupt the flow.  The risk is splitting the tube, which then becomes a flooding mechanism.

What is it with these gratuitous insertions of /size and /font instructions when putting a quote into text on here?  It doesn't show until after  posting, when it suddenly appears as a row of dotted lines......
Logged
"With the right tool, you can break anything" - Garfield

grendel

  • Full Mayhemer
  • *****
  • Offline Offline
  • Posts: 1,697
  • Location: Canterbury, Kent, UK
Re: water pump as an exhaust
« Reply #6 on: January 11, 2014, 10:57:38 AM »

maplins used to do a water pump kit (toy) that had a proper piston pump that pumps in spurts, maybe you could get one and modify it for your boat.
Grendel
Logged

grendel

  • Full Mayhemer
  • *****
  • Offline Offline
  • Posts: 1,697
  • Location: Canterbury, Kent, UK
Logged

Martin [Admin]

  • Administrator
  • Full Mayhemer
  • *****
  • Offline Offline
  • Posts: 19,059
  • Location: Peterborough, UK
    • Model Boat Mayhem
Re: water pump as an exhaust
« Reply #8 on: January 11, 2014, 01:18:38 PM »


I've also heard or restricting the outlet opening and fitting some sort of small bladder or balloon after the pump causes spurting...
Logged
"This is my firm opinion, but what do I know?!"    -   Mayhem FaceBook Group!

HUNTER

  • Hunter
  • Full Mayhemer
  • *****
  • Offline Offline
  • Posts: 1,087
  • Is my cocoa ready yet?
  • Location: Eastbourne
    • Hunter Systems
Re: water pump as an exhaust
« Reply #9 on: January 11, 2014, 01:28:30 PM »

Hi,
We at www.huntersystems.co.uk have just produced a Pulse Displacement Pump to simulate cooling water pulsing from the marine engines exhausts which looks a lot smaller than the one in the photo posted by Grendel. Setting up requires connecting to a battery (leads supplied) and water in (all piping is supplied) Runs on 6 to 12 volts and is in stock now. O0
Regards
Graham

http://shop.huntersystems.co.uk/simulated-engine-water-coolant-pump-2612-p.asp


Hi there im new today to this forum. I have a 1/16 th trent lifeboat and i am trying to make water pulse out of my exhausts when running. can anyone mabe help me solve it and what water pump i would need if any and setting up ? Many thanks guys :)
Logged
Is my cocoa ready yet?

McGherkin

  • Full Mayhemer
  • *****
  • Offline Offline
  • Posts: 384
  • Location: Plymouth
Re: water pump as an exhaust
« Reply #10 on: January 11, 2014, 04:12:38 PM »

Hunter, what's the price of that and is it OK for continuous running?
Logged

Big Ada

  • Full Mayhemer
  • *****
  • Offline Offline
  • Posts: 2,021
  • Location: Kent UK
Re: water pump as an exhaust
« Reply #11 on: January 11, 2014, 05:08:27 PM »

17.95 it says on their Web Site
Logged

McGherkin

  • Full Mayhemer
  • *****
  • Offline Offline
  • Posts: 384
  • Location: Plymouth
Re: water pump as an exhaust
« Reply #12 on: January 11, 2014, 08:20:43 PM »

Just looked on the website. Am I right in saying it's some form of peristaltic pump then?

And what sort of speed does the water come out at as well? My boat will be using the water to cool the motors before chucking it out the exhausts.
Logged

gregforward27

  • Shipmate
  • *
  • Offline Offline
  • Posts: 11
  • Model Boat Mayhem is Great!
  • Location: bradford
Re: water pump as an exhaust
« Reply #13 on: January 11, 2014, 09:22:36 PM »

thats fantastic guys for the help :) i do like that maplins pump but i think the simulated water pump is the one for me which i will be buying monday if in stock still :) a bbig help though. One question it does come with pipes and leeds, i might need a little help installing it though i think it will be ok :). The price is fantastic. I will be needing two pipes for my lifeboat does this mean i will need like a spliter to make one go into two ?
Logged

grendel

  • Full Mayhemer
  • *****
  • Offline Offline
  • Posts: 1,697
  • Location: Canterbury, Kent, UK
Re: water pump as an exhaust
« Reply #14 on: January 11, 2014, 09:43:55 PM »

I would suggest a tee piece similar to one in your windscreen wiper on your car on the output pipe
Logged

derekwarner

  • Full Mayhemer
  • *****
  • Offline Offline
  • Posts: 8,043
  • Location: Wollongong Australia
Re: water pump as an exhaust
« Reply #15 on: January 11, 2014, 09:44:21 PM »

Guys....the Hunter displacement pump seems a bargin  :-))

Considering the low speed & duty cycle....should be near indestructible

It is not just scale lifeboats that showed spurt spurt engine cooling water, but all of those tramp steamers with piston driven condenser cooling pumps

I will copy this note to Graham @ Hunter & ask if it is a true peristaltic pump & what nominal displacement per minute?.....Derek

 :o ...oops there is no e-mail address  >:-o ......I won't telephone from OZ....... >>:-(
Logged
Derek Warner

Honorary Secretary [Retired]
Illawarra Live Steamers Co-op
Australia
www.ils.org.au

gregforward27

  • Shipmate
  • *
  • Offline Offline
  • Posts: 11
  • Model Boat Mayhem is Great!
  • Location: bradford
Re: water pump as an exhaust
« Reply #16 on: January 11, 2014, 10:34:54 PM »

i saw a T piece on ebay 1.99 that will do it just fine :) many thanks
Logged

derekwarner

  • Full Mayhemer
  • *****
  • Offline Offline
  • Posts: 8,043
  • Location: Wollongong Australia
Re: water pump as an exhaust
« Reply #17 on: January 11, 2014, 11:15:55 PM »

If twin water exhaust outlets are required......naturally as grendel suggests a common plastic T piece would be ideal ....Aquarium shops sell them for $1.00 for 4 pieces
The Dubro people also have very inexpensive spring wire clips  :-)) to clamp the silicone tubing over the barbs in the pump & other fittings etc

Another point for consideration is to make each discharge tube the same length & of the same orientation...this will ensure an equal volume of water is pumped or expelled on each pulsation........Derek
Logged
Derek Warner

Honorary Secretary [Retired]
Illawarra Live Steamers Co-op
Australia
www.ils.org.au

HUNTER

  • Hunter
  • Full Mayhemer
  • *****
  • Offline Offline
  • Posts: 1,087
  • Is my cocoa ready yet?
  • Location: Eastbourne
    • Hunter Systems
Re: water pump as an exhaust
« Reply #18 on: January 12, 2014, 10:50:26 AM »

Sorry people, I put the info for the Pump onto the instruction leaflet but left it off the on-line shop's details - what an idiot!!
Hear is the full spec. for this unit.

Connection is via battery connection wires.
Also includes two off silicone tubing.
Input Voltage is 6 - 12volts dc
Current draw is 80mA
Flow Rate is 0-60 ml/min      Higher the input voltage - faster the rotation rate - faster the flow rate.
Pump Rotation Speed is 0.1-100rpm
Motor Size is Dia. 27.6 x Height 37.9mm
Pump Size is Dia. 31.7 x Height 20.1mm
The Flow Direction is controlled by the positive and negative connections.
All of this info. is available on the on-line shop at www.huntersystems.co.uk where you will find all of the info. such as email address and ordering details.

I must warn you about the stock levels and price. The unit has been a raging success and has taken us by surprise. The stock that we built has gone down very fast. The problem I have is that I am about to go into hospital again for another round of operations which will hit my production for at least three weeks afterwards so please be patient.

I set the RRP at 24.95 as being the standard costing but then set the first hundred at the special price of 17.95 given 5 off. Once the first hundred have gone the price will have to go up a wee bit to make a profit - sorry. <:(

Regards
Graham
Logged
Is my cocoa ready yet?

derekwarner

  • Full Mayhemer
  • *****
  • Offline Offline
  • Posts: 8,043
  • Location: Wollongong Australia
Re: water pump as an exhaust
« Reply #19 on: January 12, 2014, 11:15:52 AM »

Thanks for the clarification Graham.......  :-))
@ 6 Vdc  = ~40mA & ~50RPM + silicone tubing & 30ml/minute 
I stand by my previous comment that this product should be near indestructible [in the intended application] & is a bargain  O0

We hope the Medicos are helpful for you......... one would hope that all of the remaining stock of the 2612 coolant pump is sold by the time you are back on deck....... {-)......Derek
Logged
Derek Warner

Honorary Secretary [Retired]
Illawarra Live Steamers Co-op
Australia
www.ils.org.au

gregforward27

  • Shipmate
  • *
  • Offline Offline
  • Posts: 11
  • Model Boat Mayhem is Great!
  • Location: bradford
Re: water pump as an exhaust
« Reply #20 on: January 12, 2014, 08:22:09 PM »

im a buyer :D
Logged

McGherkin

  • Full Mayhemer
  • *****
  • Offline Offline
  • Posts: 384
  • Location: Plymouth
Re: water pump as an exhaust
« Reply #21 on: January 12, 2014, 08:53:41 PM »

So am I  :-))
Logged

HUNTER

  • Hunter
  • Full Mayhemer
  • *****
  • Offline Offline
  • Posts: 1,087
  • Is my cocoa ready yet?
  • Location: Eastbourne
    • Hunter Systems
Re: water pump as an exhaust
« Reply #22 on: January 13, 2014, 04:00:39 PM »

Hi People,
Just to let you know that we have just sold our last unit from the 100 units that we put together as a new product promotion, however, I will be working on the next batch asap, hopefully before hospital grabs me.
I would like to thank all the guys who ordered one (they will be in the post shortly).
If you want to order from the next batch, please do so and join the waiting list. The orders will be sent out in date order.
The price will be remain the same on this next batch but will be going up after.
Best Regards
Graham <:(
Logged
Is my cocoa ready yet?

gregforward27

  • Shipmate
  • *
  • Offline Offline
  • Posts: 11
  • Model Boat Mayhem is Great!
  • Location: bradford
Re: water pump as an exhaust
« Reply #23 on: January 13, 2014, 05:23:42 PM »

argh noooo :) i miss out on that batch do we pay now or wait until theres a product to take to checkout ? cant wait to get mine :D

Logged

HUNTER

  • Hunter
  • Full Mayhemer
  • *****
  • Offline Offline
  • Posts: 1,087
  • Is my cocoa ready yet?
  • Location: Eastbourne
    • Hunter Systems
Re: water pump as an exhaust
« Reply #24 on: January 13, 2014, 05:28:47 PM »

Ok, I have set the on-line shop to accept all of the future orders so that we can work out the date order, however the downside is that Paypal  <*< will take your money when you order.
Sorry but there is no way out of this. <:(
Regards
Graham
argh noooo :) i miss out on that batch do we pay now or wait until theres a product to take to checkout ? cant wait to get mine :D
Logged
Is my cocoa ready yet?
Pages: [1] 2   Go Up