ajcoholic

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Would anyone have any information regarding an engine (rotory valve four stroke, called the Matador 60) designed by Derek Giles, and presented in the British model magazine RCM&E??

I don't know the year or any other info. But it looks very interesting and I would love to have a go at trying to build one.

Thanks!

Andrew

ajcoholic

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Well, I found out the issue is October 1985. Also found out that you can still order copies of past articles through the publisher, which I did.

Interesting project in the works!

AJC

blw

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Andy,

It would be interesting to see what you have planned. I may have that issue.

ajcoholic

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I am hoping the reprint of the article come with the drawings... will see in a few weeks when they get here. I later saw there is also a twin version of the same engine, and I think I will order those as well.

Its a horizontal rotary valve in the head style, similar to the Webra T4-40/60/80 design.

AJC

gkamysz

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The photo here must be incorrect?

http://www.myhobbystore.co.uk/produc...dor-60-60-twin

Motorboy

I has the complete plans of the Matador 60, both single and twin engine. The twin engine are not a real boxer engine such as a OS engine, more like as a Saito with the two connecting rods to the same crank pin and the extra camshaft to other cylinder.. The engine are the 4 stroke engine with poppet valve engine and the camshaft has the helical gear crossed to the rear drive shaft who are driven by crank pin. There are no casted parts, mostly machined by solid aluminium bar etc..

I has still not builded the engine of the plan.

Also there are no rotating valve as the webra engine with Aspin valve.

ajcoholic

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Oh well, then the photo in the magazine must be of something else, as it certainly looked like a RV engine to me...

Will take another look. Maybe my eyes arent working as good as they used to?

AJC

ajcoholic

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Nope, eyes are fine.

WHatever engine they have on the top right hand corner of page 73, of that 50th anniversary edition of RCM&E, it is most definitely a rear belt driven, overhead rotary four stroke engine. And, they call it the Matador 60 by Derek Giles.

If they (the magazine) put in a wrong photo, I would still like to know if this mystery engine is available for home building.

I dont know why, but I have always had a "thing" for belt driven rotary valve four strokes. I just think they are cool!

Here is a shot of mine, I built this about 7 years ago from scratch. I made a casting for the case. The rest is bar stock. Its a brute, but it was a proof of concept design.



and a shot of the case for scale

jeffie8696

Now that makes me smile!

gkamysz

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That looks fantastic.

ajcoholic

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Here is the photo from the magazine... doesn't that look like a rear belt driven four stroke??



AJC

w8ye

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Can you have valve overlap in a rotary valve four stroke like in a poppet valve four stroke like a OS or Saito?

ajcoholic

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YEs, I guess depending upon the valve design. In my own engine, I had the intake and exhaust openings in the rotary valve separated and closed off from one another - but there was a period of (sorry I forget the number of degrees) time when both valves were open. I based my timings on the T4-40.

AJC

blw

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You have a nice looking engine.

Kmot

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From Model Engine News, photos of an engine titled "Matador"

w8ye

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That's a rear cam push rod engine

ajcoholic

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And certainly not the same engine as shown in the magazine...

Perhaps someone at RCM&E, in preparing the 50th anniversary edition, took the wrong photo for the caption?

I would still like to know what engine IS in the photo... but finding info on these model engineering projects from years past is like pulling hen's teeth...

Oh well - its fun to talk about it.

AJC

Kmot

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Yup, that's what motorboy said it was and he has the plans.

gkamysz

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The pic in the magazine looks like OHC and small judging by the size of the plug. Maybe, 2.5cc?

Greg

Motorboy

This engine are same as my engine in plan, but with valve cover on cylinder head.

In the plan are 2 alternative: with or without contact breaker. No change in compression ratio both for gas or glow plug engine fuel.

The helical gear for this engine must be ordered from gear wheel manufactur, but can make own gear wheel as i did with homemade tools as here :

[youtube]http://www.youtube.com/watch?v=HcG9Eoyf9aI[/youtube]

ajcoholic, i did not knew about the other engine with rotary valve made by Derek Giles, really nice engine. [8D]

This is no problem to have overlap, the holes are in angle to make overlap into the mainhole in the cylinder head. [sm=thumbup.gif]

w8ye

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Good video

bogbeagle

I had the plans for the Matador, at one time. Never built it.

It definitely has poppet valves.

earlwb

There must have been at least two different engine designs using the same name then.

ajcoholic, great job on the engine build. I love it.

Motorboy

Exactly, it was a bit silly that Derek Giles used the same name on 2 different engines so we do not know which of these engines, we talked about.

gkamysz

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There is no way the one in the magazine photo Andrew posted is 10CC though.