Aces High Bulletin Board

General Forums => Aircraft and Vehicles => Topic started by: Race on November 02, 2008, 04:41:31 PM

Title: Merlin Experts...
Post by: Race on November 02, 2008, 04:41:31 PM
Gents,
      Was hoping someone could tell me the cylinder spacing of a Merlin engine typically found in the Spitfire Mk IX? I am planning a scale project and dont seem to be able to find any specifications for it.

Thanks,
Race
Title: Re: Merlin Experts...
Post by: Karnak on November 02, 2008, 07:26:10 PM
I don't know the spacing, but you should specify if you mean Merlin 61, Merlin 63, Merlin 66 or Merlin 70.  All of those engines were used in Spitfire Mk IXs.  The Merlin 66 was the most common, but a lot of people seem to think of the "real" Spitfire Mk IX as being the Spitfire F.Mk IX with the Merlin 61 like we have in AH.
Title: Re: Merlin Experts...
Post by: Race on November 02, 2008, 08:49:57 PM
Karnak,
   Any series is exceptable as long as we know which one perhaps even specifications for the Mk XVI would be great.

Thanks,
Race
Title: Re: Merlin Experts...
Post by: MiloMorai on November 03, 2008, 05:58:30 AM
Shouldn't be to hard to figure out from some drawings. The bore is a known, so a 'ruler' can be made and then used to measure the distance.

(http://www.enginehistory.org/TM/V6N1ICMerlin.jpg)

(http://www.spitfire.dk/GenemskaaretMerlin.jpg)
Title: Re: Merlin Experts...
Post by: Charge on November 03, 2008, 06:09:55 AM
Ask?

http://www.enginehistory.org/

http://www.enginehistory.org/model_engines.htm

http://www.enginehistory.org/merlin_xx.htm

Barry Hares seems to have built a scale Merlin.

-C+
Title: Re: Merlin Experts...
Post by: Race on November 03, 2008, 06:26:34 AM
That engine is insane and a feat of craftsmanship. Judging by the hours he spent I would say he could have bought 3-4 of the real thing at normal shop rates.

It sounds great too!

Milo thanks for the diagrams. They help in a few ways!

Race
Title: Re: Merlin Experts...
Post by: MiloMorai on November 03, 2008, 07:29:53 AM
Race, I forgot about this Merlin, a 1/4 scale one.

http://dynamotive.netfirms.com/merlin/
Title: Re: Merlin Experts...
Post by: Angus on November 03, 2008, 09:09:35 AM
Pretty sure there is a clip on youtube of one running.
ahh..here:
http://www.youtube.com/watch?v=0xe1LL1IC7Y

Title: Re: Merlin Experts...
Post by: Angus on November 03, 2008, 09:12:12 AM
Here's a German one as well
http://www.youtube.com/watch?v=mutb7KgA9NM&feature=related
Title: Re: Merlin Experts...
Post by: morfiend on November 03, 2008, 04:43:15 PM
Ask?

http://www.enginehistory.org/

http://www.enginehistory.org/model_engines.htm

http://www.enginehistory.org/merlin_xx.htm

Barry Hares seems to have built a scale Merlin.

-C+





  Wow really cool Charge talk about a piece of art... :aok
Title: Re: Merlin Experts...
Post by: MiloMorai on November 03, 2008, 04:46:02 PM
  Wow really cool Charge talk about a piece of art... :aok

Check out the R-R Eagle, if you want to see a piece of workmanship art.
Title: Re: Merlin Experts...
Post by: 633DH98 on November 03, 2008, 04:56:47 PM
48 spark plugs?  Or is that direct injection on the model Eagle?
Title: Re: Merlin Experts...
Post by: Greebo on November 04, 2008, 03:07:34 PM
Not sure about the cylinder spacing of the Merlin, but the bore was 6 inches and the stroke 5.4 inches. There was no variation on this for any Merlin variant.
Title: Re: Merlin Experts...
Post by: Race on November 04, 2008, 04:39:14 PM
I believe you transposed those numbers....my specs show a bore of 5.4" and stroke of 6".

Ryan
Title: Re: Merlin Experts...
Post by: Greebo on November 04, 2008, 07:31:53 PM
You are right Race, my bad.
Title: Re: Merlin Experts...
Post by: gpwurzel on November 07, 2008, 08:57:28 AM
(http://i45.photobucket.com/albums/f80/wurzeluk/DUXFORDAIRSHOW041.jpg)

(http://i45.photobucket.com/albums/f80/wurzeluk/DUXFORDAIRSHOW043.jpg)

Couple of pics of Merlin/Griffon from Duxford this year, dunno if this will help in anyway.

<S>


Wurzel