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Jones .605 Glow engine

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KEITH BEAUMONT10/06/2018 16:25:42
53 forum posts
12 photos

dsc03499.jpgdsc03451.jpgdsc03446.jpgHave recently finished the Jones .605 glow engine.Pictures should be below. Castings and drawings from Hemingway kits.It is an 80s design,before the requirement for silencers, but I did a small mod to allow the fitting of a standard OS unit, which has taken that ear splitting crackle out of the engine sound. Pity, but I have to think of my neighbours It is a thirsty beast while being run in. A 6oz tank full gives a 5 minute run time. So far It has clocked up an hour of rich running with 5% fuel. An occasional 10 second burst flat out registered just over 15000RPM,so the Schnuerle porting, the setting out and drilling / filing of which, certainly strained the grey matter, must be in the right places, It is an easy starter,and was quite easy to get the needle valve and throttle settings about right. I am at present trying out different plugs.

Roderick Jenkins10/06/2018 16:41:38
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1772 forum posts
451 photos

Very nice, Keith.

Rod

KEITH BEAUMONT10/06/2018 16:45:55
53 forum posts
12 photos

Thanks Rod.

Keith

geoff walker 110/06/2018 19:42:14
310 forum posts
132 photos

Well done Keith,

.That's an impressive test stand as well

geoff

Emgee10/06/2018 20:58:23
1157 forum posts
206 photos

Great looking engine Keith, also sound pretty powerful although you don't mention prop size used.

Emgee

KEITH BEAUMONT10/06/2018 21:12:24
53 forum posts
12 photos

Hi Geoff and Emgee.

The prop used at the moment is a 12" x8", which is the only one I have at this sort of size at the moment.

When flat out it nearly caused a crisis, pulling the workmate stand across the floor, hence the sack of rock salt laid across its base. It clearly has a lot of power.

Keith

Neil Wyatt10/06/2018 21:17:53
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Moderator
16415 forum posts
685 photos
74 articles

That's nice, I'm almost as impressed by the test stand as by the engine, I may copy that!

Clive B10/06/2018 21:30:10
24 forum posts
20 photos

Keith, The engine looks terrific; well done! Maybe you can post a video of it running?

Clive

P.S. Really like your Chenery Vee twin also. Might finish mine one day!

Roderick Jenkins10/06/2018 21:45:04
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1772 forum posts
451 photos

I've got one of those test stands:

EIAAMXQGqJRF8nz

As usual, cheaper than buying the bits frown

Rod

Edited By Roderick Jenkins on 10/06/2018 21:45:25

ChrisH10/06/2018 22:06:37
827 forum posts
12 photos

Very nice engine, looks exceedingly well made - well done.

Chris

Marcus Bowman10/06/2018 23:00:15
161 forum posts

Lovely thing.

I particularly like the colour of the anodizing on the fins.

Marcus

KEITH BEAUMONT11/06/2018 11:12:28
53 forum posts
12 photos

Thank you all for your comments.

Neil, The test stand is as Rod mentioned. I found the cap head screws on the left side got in the way of the throttle arm in a lot of cases ,so I c/bored them flush on that side.

Clice B, Good luck with your Vee twin. If you have not already done so, I suggest you read my previous where I relate my problems with compression ratio and the need for long nuts to hold the heads down.

Keith

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