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Vol 172

Opus Proximus

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bill Maskell	26/10/2011 08:49:39
13 forum posts	Hi all, can anybody please tell me what the flywheel dimensions are for the opus proximus engine described in vol 172 please.
Weary	26/10/2011 10:02:32
421 forum posts 1 photos	Have had a quick look and cannot see any drawings nor dimensions. In the text (17 June 1994, Vol.172, No 3971, page 764) Mr Bray writes: I used the cast iron flywheel available from College Engineering Supplies on my version of the engine. Due to minor problems encountered in casting the relatively small cross sections involved and the very small difference in cost, only bronze castings will be available from this source. .... Those who wish to do so can follow my example with Suum Cuique and cut the flywheel from the solid. Suum cuique flywheel 70mm (2 3/4") diameter, six spokes, 3mm (1/8") thick rim etc., (16 Feb 1994, Vol. 172, No. 3963, page 219)
methusala	26/10/2011 10:13:43
32 forum posts	Hi Bill, I remember the series of small fabricated engines serialised in m.e in the 1990s' and all the flywheels were the same size, 2 3/4" dia as Weary has stated above. Colin.
bill Maskell	26/10/2011 10:55:36
13 forum posts	Thank you Weary and Colin for your very quick response. That is most helpful. Best wishes Bill.
Bogstandard	26/10/2011 14:09:47
263 forum posts	Maybe this can be of assistance, a build from plans supplied in ‘The Best of Model Engineer’ an Autumn 2009 special. Opus Build John
bill Maskell	26/10/2011 16:01:35
13 forum posts	Thanks John, thats brilliant. Bill
John Shepherd	26/10/2011 16:15:30
222 forum posts 7 photos	Bill Take care the original drawings had several errors, unfortunately I have no record of the corrections. It is a nice small engine but it is difficult to get running (not just my experience). Regards
bill Maskell	27/10/2011 08:21:49
13 forum posts	Thank you all very much. The information has been most helpful. Best wishes to all. Bill

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