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[flundle]

Greetings each.
I have just sent Peter the Drawings by email.  I think the book is too big to do that but the CD is on its way Peter.

I have had problems with my CD writer for some time.  It seems to work OK then when you put the CD into another PC, nothing!  When you right click properties on Drive D (my cd drive) it show a fiull disc with no available space.  So of I go to PC world and guess what. Sorry Sir, we don't do drives with that plug anymore!
I am going to change my PC soon and this time its going to be a Mac! 

[ACTion]

Flundle
We use Misco to supply our PC gear, and they stock both SATA and IDE CD-ROM drives. PC World are just about OK for printer cartridges - if you're desperate. Your problem may be that the discs aren't being finalised after copying. Roxio software is prone to this and it's a PITA to sort. We bought a cheapo Nero program and it now works a treat.
DM
(Sorry for hijacking your thread, Peter - hope you may forgive me in time.....)

[flundle]

Wow that was quick!  many thanks, I will invest in a copy.
Peter, its all yours again! 

[dodgy geezer]

Wow that was quick!  many thanks, I will invest in a copy.

Before you do that, try downloading a free CD burning package. I use the free version of this - http://www.deepburner.com/ - and it works a treat for me...

[johno 52-11]

Peter

If you are looking for simulated cooling on a model lifeboat the time you want it is when the boat is stationary or moving slowly. This can only be achieved with a pump. Water pickups only work when the boat is moving and by the time the water is coming out the exhaust the boat will be moving to quick to see it. If you are worried about the continuous running of a pump you can do what we have done and fit a switch which is controlled by a servo that is on a Y lead from a speed controller this way the pump is turned of when the boat is over half throttle

[Xtian29]

Make yourself a peristaltic style pump using suitably sized (tiny) silicone fuel tube and a roller passing a semicircular surface, somewhere in the drive system.! It won't use much power. The flow will even "pulse" at the same revs as your drive shaft, for even more realism!

 Using the smallest ball race I could find, I made a pump about 20 mm dia and fitted it inside the edge cleaning brush cavity of my iRobot "Roomba" robot vacuum cleaner so that the overheating electric motor could be cooled via a water jacket and separate radiator!! It pumped water through the water jacket, then on to a radiator that dumped the heat into the brush airflow. The water then returned to the  pump and it worked a treat! The worlds smallest enclosed water cooling system....... The flow rate is governed by the pipe size and the surface speed of the roller.

You have owned a peristaltic pump all your life! That's how your intestines pump the sludge about!!

[Peter Mealing]

Hi All,

I'm grateful for all of the kind pointers and advice.

Adrian produces a superb model without doubt. A totally different concept and I as a past manufacturer (as a hobby) of the finest quality 1:6 RC scale WW 2 model tanks myself, I know the difficulties of producing quality!

Supply difficulties are becoming more and more obvious I can see for myself with items I buy and sadly, I don't think that will improve for a while. Patience is a strong point of mine but the 'Health Issues' and fast approaching my State Pension lets the mind wander!

These Beta Blockers whatever they are do work.

BP and all that goes with it back to normal! Just an operation, I say just!

Make yourself a peristaltic style pump using suitably sized (tiny) silicone fuel tube and a roller passing a semicircular surface, somewhere in the drive system.! It won't use much power. The flow will even "pulse" at the same revs as your drive shaft, for even more realism!

Yup, I'll do that as soon as I've finished making this rocket to fly to the Moon next week! A joke!

Not within my capabilities probably I'm glad to admit.

You can as Chris hinted at take this all 'too far' if you are not careful and it is after all one's hobby.

I intend to make the Tamar as well as I can and the point about sharing our knowledge and our ideas on web sites such as this is really 'when push comes to shove' what it should all be about I think.

Maybe I think old?

I have sadly in my time met a few who are in their own particular field of expertise 'Legends in their own minds' and guard what knowledge they have as if it were the 'Crown Jewels!'

Point made and over.

As I said I'll post what I do in pictorial form as it may help others.

All ready to go. All of the Action modules I will need (superb stuff and a real nice guy to boot), brushless motors, LiPo packs, you name it.

(Maybe a rocket to the Moon is not such a silly idea with all of this stuff!) Another joke!

Again Chris and all that have posted and helped a sincere thank you.

Best wishes.

Peter.

[ACTion]

How about using a small water-jet drive unit? Graupner do a Mini unit which probably could be adapted to split the flow into two outlets, and the speed could be adjusted by varying the voltage to the impeller motor.
Just a thought......................
DM

[Peter Mealing]

Hi Dave,

Thanks for the thought.

Maybe a rocket to the Moon would be in fact simpler?

Best wishes.

Peter.

[Roadrunner]

You can as Chris hinted at take this all 'too far' if you are not careful and it is after all one's hobby.

I intend to make the Tamar as well as I can and the point about sharing our knowledge and our ideas on web sites such as this is really 'when push comes to shove' what it should all be about I think.

I think the whole topics going to far in regards to the simple question on how to make a water cooling effect, sat here reading the thread its like the answers are not there going off the replys coming. There's a ton of stuff i know, I won't post it all simply because I don't have too, there not ''kept secrets'' but i do enjoy the looks of some when they go ''how the hell did you do that??!!'' nothing like a little smile and a wink.

Sticking to the point 

I as a past manufacturer (as a hobby) of the finest quality 1:6 RC scale WW 2 model tanks myself, I know the difficulties of producing quality!

Makes me wonder if you did all that how come you can't work out a simple solution to moving water to give an effect? (sorry i sound stuck up here but that's how it reads to me)

The simple answers are there water cooling inlets controlled via the props, water pumps, or as Dave suggested mini water jets ( although i think they are to powerful for the job but a good alternative)

That's it basically... pick one... no point looking for a solution that's ''reinvented the wheel'' its just not there, well not on water pumping anyway!

Maybe a rocket to the Moon would be in fact simpler?

DOUBT IT, sucking water through a straw or playing with physics... i know which one easier 

[CJ1]

Dear Peter,

To get back to simple, and thinking laterally, I agree you need a small capacity pump of some sort and one that runs at 6volts...ish. You can get small ones like that at garden centres for fish tanks and ornamental ponds. I've just installed a small one in my patio pond that produces a small trickle and runs off a 240v to 6volt transformer. There would certainly be plenty of room in the Tamar for it.

I've just made up the Speedline exhaust outlets and the flap hinges nicely. That flap will disrupt the flow of water as it "bounces" on the water coming out and make it look realistic.  Watch this YouTube clip to see that. http://youtu.be/-nG4VPEED4o

At speed, I don't think anyone would see that it is still a trickle. When I gave my hull it's first trial, once it was running I couldn't even see in the wake behind it that one of the propellers had dropped off!!



Whilst looking for that photo, I've found the photos of the jigs I used to allign the shafts.






Chris

[CJ1]

Also look at 3mins 50secs on this video for a great shot of cooling water at low speed.

http://youtu.be/RKo82gEkLmk

Chris

[johno 52-11]

It should be pointed out that it is the exhaust gasses that are causing the movement in the video of the Tamar being launched. When adding simulated cooling water it can be helped by adding a balance weight to the inside of the flap. This works on the Severn and if you add smoke as well you get a better result.