its my birthday and I have splashed out

[ashley needhamParticipant @ashleyneedham69188]

I have fitted some water-cooling to the motor now, 1/4 inch copper brake pipe wound around an undersized wooden “motor” turned up on my wood lathe.

 

I didnt think the coil would fit under the motor due to insufficient clearance, but the trick is taking the motor off the mount, putting the coil on and then re-mounting the motor. I will try it possibly this Sunday.

 

Actually it looks as if it may be fairly windy Sunday, so perhaps my HMS Glorious battlecruiser or the 1890s HMS DEVASTION (sort of) might be fun, as the waves crashing over the  bows looks very authentic (if you have an imagination)…(unless I fit the 12v battery in the DEVASTATION in which case the nose comes right out of the water and it almost planes, decidedly UN-authentic but jolly good fun-well it makes me larf)

 

I have been today, (sat 3rd) to the Kew steam museum, on my almost steam-era 1957  350cc Ariel, to their model engineering show, at which there is a very strong boating contingent.

There was a stand there with some flash boiler steam powered straight runners, and the dvd playing had them going fairly rapid, like. 

The man said his grandfather had been tuning a Stuart turner single cylinder engine, optimising the valve or port timing etc etc (I was sceptical at first…tuning a steam engine???). The motor did look very butch, and the optical proof was there on the stand.

 

An E-boat on one stall had three brushless motors, an IN-runner for the central shaft, and two OUT-runners for the outer shafts? I didnt ask as the answer was likely to have given me a headache. IN-runners look like ordinary motors, and OUT runners are like WW1 Bently rotary engines, the casing revolves, and has the drive shaft sticking attached to it…hmm…takes some getting used to.

 

The RN produced a very advanced steam plant for some gunboat or other during the war and that was very fast…trouble is, it only takes one bullet in the wrong pipe to disable the engine entirely, so it was not pursued (covering an expected shortage of high power petrol/diesel engines)

 

We went to a dinner-dance last night, and danced to a semi pro, or possibly proffessional band, who didnt play the sort of strict tempo music 90% of the guests wanted . Jolly bad show and one wonders how the leader did not spot such a thing….I always look at the audience when my band is playing a gig and tailor the tempos to the dancing capability displayed. it was an 8-piece and the agent website indicated a £1500 fee (not including VAT). expected better. ho hum. I had better put up my fees (to pay for more boats).

I have now tiptoed into the BRUSHLESS motor arena for my next model, the Ekranoplan–see gallery. 

 30,000 RPM at the prop should get things moving ! its a bit odd this, the more powerful the motor (which in my limited experience seems to be the RPM per volt rating) the smaller they seem to get ??

 

Unlike the Sunderland, which to be honest I was hoping might be a bit faster than it is, EXPERT opinion, from the supplied drawings and my verbal description, from Dave Charles has it that with the brushless setup i have- and if I keep the weight down (I am good at that)   the problem might be stopping it from taking off!

we dont want that, as as soon as it leaves the water, a completely different set of controls is required.but……

 

sorry to witter on, although only 6 bods I can think of will bother reading this post.

 

Ashley

 

[Paul TParticipant @pault84577]

Ekranoplan………..about time……one of those huge russian monsters or a tiny whimpy thing…….and another subject for MB [toyboater?????] I hope you got permission off a certain chap to use his image as he is know for being very upset if you dont

 

Ok so I account for 1 “bod” now lets see who else will own up.

 

Paul

[Bob Abell 2Participant @bobabell2]

Count me in 2!…………………Bob the Bod!

 

Make it bigggggg!……….Plenty on rivetsssss!………….Rusttttttt!…………Awesomeness in profusion!

 

Might it not be appropriate to have a new thread?

 

 

Just passing by……….Bod 2

[Paul TParticipant @pault84577]

Ashley

 

Try this one (you can put your action man on it)

Paul

[Paul TParticipant @pault84577]

Or even

 

 

 

 

[ashley needhamParticipant @ashleyneedham69188]

No.No No !!.it will be like the line drawing in my pictures.I think about 36 inches overall. I test floated a slightly smaller very thin hull and was pleasantly suprised by the relatively low waterline. If I make it very light…we will see.

 

Of course another mag article !! cant turn down all these hundeds of pounds, can you !!!

 

Ashley (ok, I live in hope on the fee front)

 

[Len OchiltreeParticipant @lenochiltree67043]

Hi Ashley,

 

See Dec 1997 MMI for an Akranoplan articule.

 

Len.

[ashley needhamParticipant @ashleyneedham69188]

Len, and others..the trouble with the planned Ekranoplan is that it has to look somewhat like the real thing. IF memory serves me right, the mag Ekrano`s had props at the front to drive air under the wing to assist lift. I did contemplate a ducted fan unit in the nose to blow air in a similar fashion, but it would just as likely be a water pump so current planning is not to have one. Nipping along fairly smartly will do just nicely, as I foresee that the dividing line between going fast on the water and taking off will be very small. AND if it did actually leave the water it would just as likely flip over, not being balanced for proper flight.

 

Ashley

[ashley needhamParticipant @ashleyneedham69188]

I have added water cooling to the motor now. The out-drive has a hole in it for a water scoop, and I have jammed a bit of brass pipe of a suitable dimension with the end filed at 45 degrees (or so) and then have purchased a large reel of 1/4 inch copper brake pipe.

 

This was bent around a FORMER, of 1000 year old best seasoned malonga- longa wood (or was it just cheap pine?), turned slightly smaller than the motor and all connected together with some jolly old silicon tube,

 

And it works !!    water is seen to be issuing from the outlet at 1/4 throttle, and after a few brisk runs around the pond, the whole lot is just nicely warm.

 

I have sufficient tube for about 3 more motors! so in the long run it wont have been quite so expensive…

 

Ashley

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