Cliff On the majority of Brittish locomotives the right hand crank pin leads the left by 90 Deg which is the way round I've got them and in any case if they were the opposite way round the engine should still run and run correctly except that the left hand wheels would be in advance of the right hand ones by 90 Deg.....just think of the two sides of the loco comprising of two separate engines each individually timed and independent of the other one............now if your talking three cylinder conjucated valve gear then................ Thanks for the thoughts though, my initial diagnosis is that there is a fundamental design flaw, I believe the bobbins may be the wrong length or more likely the ports have not been machined in the valve liners very accurately......now that is some grief to put right. Regards, IP Priest & Sons Model Engineers http://www.kinvermes.pwp.blueyonder.co.uk/p1.htm -----Original Message----- From: modeleng-bounce@xxxxxxxxxxxxx [mailto:modeleng-bounce@xxxxxxxxxxxxx] On Behalf Of Clif Walker Sent: 05 December 2004 17:29 To: modeleng@xxxxxxxxxxxxx Subject: [modeleng] Re: Valve Gear Modifications HI, You havn't by chance got the standard Winson problem of the wheels in the wrong way round.? This may sound daft but their instuctions never seem to state which side the leading crankpin should be on. Regards Clif ----- Original Message ----- From: "Pendragon" <idpriest@xxxxxxxxxxxxxxxx> To: <modeleng@xxxxxxxxxxxxx> Sent: Saturday, December 04, 2004 10:41 PM Subject: [modeleng] Valve Gear Modifications > Greetings all, > > Saga of the Winsons Brit continues. > > Priest & Sons Model Engineers > http://www.kinvermes.pwp.blueyonder.co.uk/p1.htm > > > > --- > Outgoing mail is certified Virus Free. > Checked by AVG anti-virus system (http://www.grisoft.com). > Version: 6.0.805 / Virus Database: 547 - Release Date: 03/12/2004 > > > MODEL ENGINEERING DISCUSSION LIST. > > To UNSUBSCRIBE from this list, send a blank email to, > modeleng-request@xxxxxxxxxxxxx with the word "unsubscribe" in the > subject line. MODEL ENGINEERING DISCUSSION LIST. To UNSUBSCRIBE from this list, send a blank email to, modeleng-request@xxxxxxxxxxxxx with the word "unsubscribe" in the subject line. --- Incoming mail is certified Virus Free. Checked by AVG anti-virus system (http://www.grisoft.com). Version: 6.0.805 / Virus Database: 547 - Release Date: 03/12/2004 --- Outgoing mail is certified Virus Free. Checked by AVG anti-virus system (http://www.grisoft.com). Version: 6.0.805 / Virus Database: 547 - Release Date: 03/12/2004 MODEL ENGINEERING DISCUSSION LIST. To UNSUBSCRIBE from this list, send a blank email to, modeleng-request@xxxxxxxxxxxxx with the word "unsubscribe" in the subject line.