Whittle flat 4 engine details needed.

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Whittle flat 4 engine details needed.

This topic has 14 replies, 6 voices, and was last updated 17 September 2024 at 21:01 by Emgee.

Viewing 15 posts - 1 through 15 (of 15 total)

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16 September 2024 at 22:21 #753935
Emgee
Participant
@emgee
Request for source of plans for the Whittle flat 4 engine serialised in Vol 21 and Vol 22 of EIM, exact dates not known.

Emgee
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17 September 2024 at 08:20 #753963
bernard towers
Participant
@bernardtowers37738
bamopro.co.uk has the index for the flat four its in two Model engine world issues so now to search for them good luck!!!
17 September 2024 at 08:57 #753975
Emgee
Participant
@emgee
Thanks for the info Bernard but no mention there of the flat 4 engine, a 2.5cc opposed twin and the V8 only get mentioned.

Emgee
17 September 2024 at 09:00 #753976
JasonB
Moderator
@jasonb
The slightly larger flat four “PEEWIT” and the opposed twin derived from it that was in ModEngWorld are not the same engine as Emgee is after. I do have the issues of SIC that the PEEWIT was in.

I suppose at 5.3cc it uses some of the V8 parts as that was 10.6cc

Complete volumes available on ebay or from Tee publishing but a bit pricy.
17 September 2024 at 12:06 #754029
bernard towers
Participant
@bernardtowers37738
Look under flat four not eric whittle
17 September 2024 at 13:09 #754040
JasonB
Moderator
@jasonb
I found a few more photos, possibly the same engine builder as the one on David Carpenter’s site
17 September 2024 at 13:53 #754044
Emgee
Participant
@emgee
Jason

Thanks for the link to the great pictures, yes it is clear from those the common parts are the cylinders, pistons and rods. the cylinder heads are also the same design but for 2 and not 4 cylinders.

Bernard, I will go back and check.

Emgee
17 September 2024 at 14:25 #754046
John Hinkley
Participant
@johnhinkley26699
Emgee,

This extract from an index PDF from the link on this page, would indicate to me that the design was also published in Model Engine World :

Not much to go on, but it might give you another line of investigation.

John
17 September 2024 at 15:29 #754055
JasonB
Moderator
@jasonb
John, a twin only has two cylinders. It’s a 5.3cc flat four “boxer” engine we are after.

There is also an earlier mention of a “Flat Four 4-stroke” but whether that is the one Emgee wants or the Peewit I am not sure. Only a single issue of Mod Eng World also seems a bit short for a full set of plans, maybe just an article about one of his flat fours?
17 September 2024 at 15:44 #754057
John Hinkley
Participant
@johnhinkley26699
Good spot, Jason. Should’ve gone to Specsavers. Come to think of it – I did! Pity I didn’t have my thinking head on.

John
17 September 2024 at 15:55 #754059
Michael Gilligan
Participant
@michaelgilligan61133
Predictably good research there, Jason

MichaelG.
17 September 2024 at 16:20 #754065
Emgee
Participant
@emgee
Many thanks to all who have responded to my request, knowing now the engine is described in SIC magazine I will check my index of copies for the article.

Emgee
17 September 2024 at 16:42 #754066
JasonB
Moderator
@jasonb
No The Peewit is in SIC which is not the same. Yours has all the valve gear above the crank, the Peewit has it all below
17 September 2024 at 18:40 #754093
John Purdy
Participant
@johnpurdy78347
Engee

The Whittle engine build was described in EIM starting in Vol. 21 #7, Jan. 2000 and ran to Vol. 22 #5. I’ve sent you a PM.

John
17 September 2024 at 21:01 #754112
Emgee
Participant
@emgee
Hi John

Thanks for that information, very helpful.

Emgee
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