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Sleeve valve engine sleeves.

Technical issues not related to a DLOC car marque, eg tyres, ethanol, other car makes, etc. and legal, political and insurance
ranald
Posts: 311
Joined: Sat Feb 13, 2016 8:21 am
Location: North Wales

Re: Sleeve valve engine sleeves.

Post by ranald » Sun Oct 14, 2018 9:12 am

Just out of interest, the science museum have a 1933 Daimler 20 sleeve valve in their collection
https://collection.sciencemuseum.org.uk ... rivate-car
Maybe it has spare sleeves tucked away in it’s tool box!,

Stan Thomas
Posts: 539
Joined: Sat Feb 13, 2016 2:14 pm
Location: Penkridge. Staffs.

Re: Sleeve valve engine sleeves.

Post by Stan Thomas » Mon Oct 15, 2018 8:38 am

I've spoken to Agra Engineering, and we've had a brief conversation. Pity they are so far away.

I'll contact the Science Museum as you advise.

I've been in touch with Birmingham Museum, as they have an unidentified Daimler in store - but can't get past the "jobsworths" who answers the 'phone. That's pretty gauling considering I spent eons of time some years ago assembling one of their exhibits for free - hence my saying "If you do something for nothing, that is the value of the respect you earn".

Incidentally, there is also a 16/20 in the Coventry Museum "overflow" of un-displayed exhibits stored in a building on one of the original Daimler Factory sites - and believe me, its a veritable Alladin's Cave! So much so that I've even thought of approaching them to see if I could arrange a private Club visit.

simonp
Posts: 365
Joined: Mon Mar 07, 2016 9:59 am
Location: Birmingham

Re: Sleeve valve engine sleeves.

Post by simonp » Tue Oct 16, 2018 10:29 am

Have you already spoken to the Registrar John Pochin?

SimonP
Daimler SP 250 - "To feel its eager response as you open up is to know a new motoring adventure"(Sales brochure) The adventure continues!

Stan Thomas
Posts: 539
Joined: Sat Feb 13, 2016 2:14 pm
Location: Penkridge. Staffs.

Re: Sleeve valve engine sleeves.

Post by Stan Thomas » Wed Oct 17, 2018 5:32 pm

I asked John first!!

djl
Posts: 21
Joined: Thu Oct 31, 2019 2:24 pm
Location: Bucureşti (Bucharest), capital of România (Romania)

Re: Sleeve valve engine sleeves.

Post by djl » Thu Oct 31, 2019 6:14 pm

I don't own a sleeve valve car, but in the future it might be on my list of inrerest such a car.
So I ask from now: did any one found any person or company that can manufacture this kind of valves?
Valves (electronic tubes) are for audio what preselector gearboxes are for cars.

Stan Thomas
Posts: 539
Joined: Sat Feb 13, 2016 2:14 pm
Location: Penkridge. Staffs.

Re: Sleeve valve engine sleeves.

Post by Stan Thomas » Sun Nov 03, 2019 9:36 am

In a word - yes it would be possible to get new sleeves made.

Early type sleeves before about 1928 were cast iron, and can be made relatively easy - but at a cost!

Later sleeves were steel as they were lighter - but had to be white-metalled to form a bearing surface - but which ultimately proved to have a propensity for the white metal to errode around the exhaust ports. However, steel sleeves can be made (but at an even higher cost!!)

I have a contact who could write the CNC programme and have approached a manufacturer regarding supply of the tubing required to ground finish. I've also discussed the ramifications of Nikasil plating in lieu of white-metalling, which would give a far superior finish than original.

Stan Thomas.

djl
Posts: 21
Joined: Thu Oct 31, 2019 2:24 pm
Location: Bucureşti (Bucharest), capital of România (Romania)

Re: Sleeve valve engine sleeves.

Post by djl » Sun Nov 03, 2019 9:44 am

But does it costs more then 200 Sterling Pounds per valve?
Valves (electronic tubes) are for audio what preselector gearboxes are for cars.

Stan Thomas
Posts: 539
Joined: Sat Feb 13, 2016 2:14 pm
Location: Penkridge. Staffs.

Re: Sleeve valve engine sleeves.

Post by Stan Thomas » Mon Nov 04, 2019 6:16 am

I've not exactly gone into pricing - which in any case would be down to individual requirement, bearing in mind its not just manufacturing cost, but how desperate you are which would hike up the price.

That said, whatever you required would be "one offs", so I'm afraid the cost would be far higher that a few hundred pounds each!!

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