Topic: round window vents?? (Read 7189 times)

loinerlad · « **on:** July 05, 2012, 08:58:26 pm »

Can anyone tell me where I can buy some round window vents to go on my model Vosper RTTL? I have looked all over the web for these and cannot seem to come up with anything

or does anybody happen to know if they have a particular name so I can carry on my search?

Hope someone can help

Bryan Young · « **Reply #1 on:** July 05, 2012, 10:26:12 pm »

"Loinerlad".....looking at the pic you posted....are you referring to the 2 circular things on the windscreen? They are called Kent Clearscreens.
Circular vents were not uncommon. I guess you'd have to make them yourself though. They were basically simple. Two slotted discs. The outer disc being fixed and the inner one rotatable. Turn the inner one so all the slots were open and get full ventilation. Close the inner slot disc and zero ventilation.

irishcarguy · « **Reply #2 on:** July 06, 2012, 02:41:07 am »

I did not know the name either but after a long search I did find them in a German model site & today emailed them for prices for shipping. They cost from 60 to 90 euros depending on size.If you need the site PM me.I can't read German but the picture told the story. Mick B.

Guy Bagley · « **Reply #3 on:** July 06, 2012, 11:02:54 am »

i think cap maquettes do them

Circlip · « **Reply #4 on:** July 06, 2012, 11:21:35 am »

Remember reading somewhere that the only stupid questions were the ones not asked? Wonder why "Newbies" don't ask or are intiimidated?

Some were not born in the age of wonderment.

Regards Ian.

Norseman · « **Reply #5 on:** July 06, 2012, 11:40:35 am »

Quote from: irishcarguy on July 06, 2012, 02:41:07 am

They cost from 60 to 90 euros depending on size.

For that price I'd want 1:1 Mick

Nice to know the proper name though - I'll save a picture properly titled so I don't forget it

Dave

Bryan Young · « **Reply #6 on:** July 06, 2012, 11:58:45 am »

Dear all only a few post below the questioner is a topic called "Kent Clear View Screens"...complet with photos and a simple way of making them. BY.

RAAArtyGunner · « **Reply #7 on:** July 06, 2012, 12:58:53 pm »

Quote from: Circlip on July 06, 2012, 11:21:35 am

Remember reading somewhere that the only stupid questions were the ones not asked? Wonder why "Newbies" don't ask or are intimidated?

Some were not born in the age of wonderment.

Regards Ian.

It was quoted to me, by an Engineer, don't ask the question if you won't like the answer.

However there is also, if you don't ask the question no matter how dumb you will never know.

Norseman · « **Reply #8 on:** July 06, 2012, 02:26:45 pm »

Quote from: raaartygunner on July 06, 2012, 12:58:53 pm

no matter how dumb you will never know.

I suspect I do - thick as a brick, but I'm willing to learn - I'm not yet decided which I'm learning the most from; my own frequent mistakes or all your advice lads

Dave

longshanks · « **Reply #9 on:** July 06, 2012, 07:32:32 pm »

I have got to agree with Bryan Young on the ease of making them -

"Simple enough to make though. Two plasticard "washers" (generally the units were painted white) glued either side of the window, a small centre hole for the disc "axle, no need to cut the actual disc as the edge rim is hidden by the outer casings. The visible part of the disc between 12 and 15", with the casing part about 2" wide. And that's it. BY. "

http://www.modelboatmayhem.co.uk/forum/index.php?topic=38085.0

Rings can be cut with hole cutters or spring compass (ie one that screws in and out)

knoby · « **Reply #10 on:** July 06, 2012, 09:35:08 pm »

modelling timbers do an etched brass in 2 sizes
http://www.modellingtimbers.co.uk/25.html

Norseman · « **Reply #11 on:** July 06, 2012, 09:48:04 pm »

I'm curious to know how many rpm would be a workable speed?

Dave

derekwarner · « **Reply #12 on:** July 07, 2012, 12:01:05 am »

Dave ...the following courtesy of Wikipeipedia thingie.

"Clear View Screens were originally developed in the mid 1930s for automobiles as a better option than standard windshield wipers[1] but were soon found more suitable for small boats and larger ships. On ships, a clear view screen or clearview screen is a glass disk mounted in a window, usually on the bridge, that rotates at high speed (~1500 rpm) to disperse rain, spray, and snow. A clear view screen is typically driven by an electric motor at the center of the disk, and is often heated to prevent condensation or icing. Clear view screens are also used in locomotives and rail transport"

When you think about it...would you not need to maintain a similar speed in the model irrespective of scale?....as we cannot scale the rain or water drops.........Derek

Kim · « **Reply #13 on:** July 07, 2012, 12:17:24 am »

Hi All,

I'm old enough to remeber seeing these on many ships but could those mor eknowelegable tell me ..
were they only mounted on flat windscreens?

From what has been said before looks like an easy job for the laser cutter.

Regards
Kim

Norseman · « **Reply #14 on:** July 07, 2012, 12:26:52 am »

Hey Derek

ooh that sounds like a finger trimming project.
I was just thinking more of a suitable speed to be 'representative'
60rpm maybe?

Dave

irishcarguy · « **Reply #15 on:** July 07, 2012, 08:54:42 am »

When I am asked a question most times I am chuffed, as the person asking the question is assuming that I know something that they don't. I generally try to help. I sure know a lot more about Kent screens today than I did yesterday though. Mick B. PS = Dave if you need one or two just let me know & the size too, when I order I will get them for you.

essex2visuvesi · « **Reply #16 on:** July 07, 2012, 09:09:58 am »

Is it possible to be a grumpy old man AND an armchair modeller? if so sign me up for the Order of the Grumpy Git (OGG)

RAAArtyGunner · « **Reply #17 on:** July 07, 2012, 09:17:11 am »

The membership is full of them

malcolmfrary · « **Reply #18 on:** July 07, 2012, 09:18:35 am »

Quote from: essex2visuvesi on July 07, 2012, 09:09:58 am

Is it possible to be a grumpy old man AND an armchair modeller? if so sign me up for the Order of the Grumpy Git (OGG)

Yes. It would be "The Recumbent Order of the Grumpy Old Git". (ROGOG)

Not quite off topic, but back in the early '60's when I was interested in bikes I recall seeing adverts in the motor cycle press about a rotating visor intended to allow clear vision in rain. It was basically a Kent Screen, but was self powered, having vanes around its edge to catch the wind and cause rapid rotation. Can't think why it didn't catch on.
Just reminded myself about the "Wal Phillips fuel injector", another wonder device of that era that came and went.

BarryM · « **Reply #19 on:** July 07, 2012, 09:21:01 am »

In this instance there is some excuse because the questioner had tried but failed to find the info required because they did not know the correct terminology. Fair enough - in this case I would help them - but those who have no problem with terminology but simply can't be bothered to do any research are those I would pass by. It might just make them do their own research instead of relying on the goodwill of others.

Incidentally, not all Clear-View Screens were driven by a central motor as Wikipedia would have you believe. I've seen some powered by an electric motor on the rim of the unit with drive transmitted to the spindle by V-belt

Barry M (MoFGOM)

Norseman · « **Reply #20 on:** July 07, 2012, 09:57:59 am »

http://www.modellingtimbers.co.uk/25.html

an item that might be of help to someone - just scroll down - and for under £2

Dave

Brani 56 · « **Reply #21 on:** July 07, 2012, 12:07:49 pm »

As far as I recall all RAF launches which were fitted with Kent Clearviews were belt driven.
Brani 56

Norseman · « **Reply #22 on:** July 07, 2012, 12:53:16 pm »

any help?

john s 2 · « **Reply #23 on:** July 07, 2012, 08:15:06 pm »

Before our beloved council scrapped the lot. Our Pier trains used the spinning glass system driven by belt from a side mounted motor. As previously described. It can get a bit wet a mile out in the Thames. One driver unit is on display in the Lynn Tait gallery Leigh. John.

Norseman · « **Reply #24 on:** July 07, 2012, 08:56:57 pm »

anything like this train - I found it earlier today?

Dave

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Author Topic: round window vents?? (Read 7189 times)