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Old 06-23-2008, 03:10 PM   #1
JohnS
 
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Default Halo triple radial

In response to overwhelming demand - well one actually, thanks Ralph. I am now going to attempt to post my first photo on here
The full version of this engine is a 5 cylinder arrangement. I was going to build a modest V twin version but as I had made a spare cylinder and head I decided to go for a three cylinder version. I believe Bogs is planning a build of the full 5 cylinder version later in the year. I think I am pushing my personal boundaries in making three of everything let alone five !

I am now approaching the stage where I need, to drill holes, angled and offset to accommodate the valve tappets. I already have a spare crankcase front section so I shall be practising on that !

John S


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Old 06-23-2008, 03:25 PM   #2
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Default Re: Halo triple radial

That's a very good looking engine. Nice work indeed. Can't wait to hear it run...

Chuck


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Old 06-23-2008, 03:58 PM   #3
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John,

At last you have got over your shyness and come out of the closet.

Now you are really showing you have got over the newbie hump.

Very well done. You have achieved wonders in the last month or so, keep it up.

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Old 06-23-2008, 04:00 PM   #4
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Very nice work John! About how large is it? I am bad with scale.
Tim
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Old 06-23-2008, 04:21 PM   #5
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Default Re: Halo triple radial

Nice! I want to build one of those in a very bad way.

Eric
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Old 06-23-2008, 05:04 PM   #6
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Quote:
Originally Posted by Bogstandard
Now you are really showing you have got over the newbie hump.
Not kidding .......... ............. very nice work John

CC
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Old 06-23-2008, 05:41 PM   #7
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Default Re: Halo triple radial

Thanks guys !!! Your words of appreciation really do inspire me to progress to the next stage. As a bit of light relief I am now working on a special flywheel. If it works out OK you will all be the first to know - if it doesn't I shall go back in my closet (Bogs).

Zeusrekning - you were asking about scale - all I can say its tiny (should have gone to specsavers - uk joke, almost). On my next post, don't hold your breath I will include something in the pic to give an idea of size - no not that !!!)

John S
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Old 06-23-2008, 06:08 PM   #8
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Default Re: Halo triple radial

Don't want to hijack John's post, as it will get better and better, but here is the original question about Halo, and contains all that needs to be known at the moment. It looks difficult, but in fact when it is broken down into little pieces, with a bit of care, someone with a couple of normal engines under their belt should be able to complete one.

http://www.homemodelenginemachinist....php?topic=1987

I will be doing a blow by blow account later in the year. Using manual machinery.

For Tim, here are some dimensions:

.375 pistons with .375 stroke (square engine)

The engine is just under 5 inches overall OD

The cylinders are .75 inches OD

The crankcase is 1.65 OD

The Drive shaft is 1/4"

These are taken from Liney's site.

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Old 06-23-2008, 11:00 PM   #9
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Default Re: Halo triple radial

Thank you John, I see now how well you can build

It has a very clean and symmetrical set of lines about it (the way it is supposed to be ). You are definitely at a higher level...

Hopefully I can achieve repeatable accuracy in the future? Until then I shall be turfing out one off odd pieces and hoping they all work with each other Speaking of which I find myself intrigued about the flywheel!!??

Please feel very welcome to post even the smallest part for us to see in the future... That's what this section of the forum is all about, showing off your talents... ( no not that one!! )



Ralph.

P.S. Be carefull John... posting pic's and general chat can become quite addictive!!!

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Old 06-23-2008, 11:14 PM   #10
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Default Re: Halo triple radial

Quote:
You are defiantly at a higher level...
Gee, John doesn't seem defiant at all.


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