The Forum is administered separately from the rest of the website - please log in below to post
  New Posts New Posts RSS Feed - J.A.P. 45 hp engine 1909
  FAQ FAQ  Forum Search   Events   Register Register  Login Login

J.A.P. 45 hp engine 1909

 Post Reply Post Reply Page  <12
Author
Errol Martyn View Drop Down
Senior Member
Senior Member


Joined: 17 Apr 2009
Location: New Zealand
Status: Offline
Points: 157
Post Options Post Options   Thanks (0) Thanks(0)   Quote Errol Martyn Quote  Post ReplyReply Direct Link To This Post Posted: 08 Jun 2010 at 23:49
Nick,
 
Many thanks indeed for looking out for me these additional clues from Clews.
 
Re the "V4 85 mm x 110 mm side valve air-cooled"
 
Does Clews quote an hp figure for same?
 
Errol
Back to Top
NickForder View Drop Down
Senior Member
Senior Member


Joined: 01 Jun 2009
Location: Bolton
Status: Offline
Points: 1369
Post Options Post Options   Thanks (0) Thanks(0)   Quote NickForder Quote  Post ReplyReply Direct Link To This Post Posted: 09 Jun 2010 at 09:16
Errol
Clews doesn't give an ouput for the side valve engine. It didn't appear at any of the shows in 1910, and I can't find any reference to it having been fitted in any aircraft so far.
 
The Martinsyde seems to have been fitted with a 40 h.p. originally, and then with the 35 h.p. from Gilmour's Big Bat monoplane (the one that ended up in Bristol Museum until the Luftwaffe destroyed it).
 
The BAPC Aero Engines listing notes a 1909 JAP V4 side valve of 20 h.p. at the RAF Museum (Cosford), with an indication that it is on loan from Wolverhampton Industrial Engines Ltd.
 
An aged Cosford guidebook (c1980 ?) illustrates the V4 and notes : 85 mm x 110 mm, air cooled, fuel consumption 0.6 pint/HP/hour. Weight 120 lbs. Features separate, cast iron cylinders & jackets. 3 white metal crankcase bearings and ball bearings att he connectng rod big ends. JAP carburettor, magneto ignition, firing intervals, in degrees of crankshaft rotation throughout complete cyle, 180 degrees. Power output 24 h.p,. at 1800 rpm. Discovered in a store room in Wolverhampton. Fitted to Mackenzie Hughes Triplane 1910 and Moon Moonbeam Monoplane 1910.
Nick
Back to Top
Errol Martyn View Drop Down
Senior Member
Senior Member


Joined: 17 Apr 2009
Location: New Zealand
Status: Offline
Points: 157
Post Options Post Options   Thanks (0) Thanks(0)   Quote Errol Martyn Quote  Post ReplyReply Direct Link To This Post Posted: 10 Jun 2010 at 03:13
Nick,
 
Thanks again for taking the time to check. No straightforward answers, it seems, but that's often the way, isn't it?
 
Errol
Back to Top
Ichabod View Drop Down
Newbie
Newbie


Joined: 25 Feb 2012
Status: Offline
Points: 2
Post Options Post Options   Thanks (0) Thanks(0)   Quote Ichabod Quote  Post ReplyReply Direct Link To This Post Posted: 25 Feb 2012 at 12:44
Have just come across this forum. Before the JAP factory closed early 1960's I took photographs of the engines in the factory showrooms, there were three aircraft engines. The notes I made were as follows:-

1908 V8 OHV 90 x 110 37.43 BHP @1300 RPM

1909 V4 SV 85 x 110 20 BHP

Aeronca/JAP 1937 H.O. Twin 4.25" x 4" 34/36 BHP @ 2400 RPM

I suspect the OHC engine is incorrect as the first OHC motorcycle engine did not appear until around 1922. The aircraft engines also had spark plugs and carburettor designed and made by the Prestwich works. A V Roe's Triplane used a 9 HP (BHP?) single cylinder engine. The JAP Monoplane, in the Kensington Science Museum, and apart from Magneto and tyres, was probably the first aeroplane to be designed and built in one factory, A Mr H J Harding was pilot and worked in conjunction with the factory.

The V4 is probably the one I photographed at Tottenham, all the engines went to the Villiers factory in Wolverhampton and when that closed ???????

There was a book published by the factory in 1951 named 'The JAP Story' which mentions all the early achievments of the company

Hope this is of interst
Back to Top
Errol Martyn View Drop Down
Senior Member
Senior Member


Joined: 17 Apr 2009
Location: New Zealand
Status: Offline
Points: 157
Post Options Post Options   Thanks (0) Thanks(0)   Quote Errol Martyn Quote  Post ReplyReply Direct Link To This Post Posted: 25 Feb 2012 at 21:18
Ichabod,
 
Many thanks for this additonal information.
 
Errol
Back to Top
Ichabod View Drop Down
Newbie
Newbie


Joined: 25 Feb 2012
Status: Offline
Points: 2
Post Options Post Options   Thanks (0) Thanks(0)   Quote Ichabod Quote  Post ReplyReply Direct Link To This Post Posted: 27 Feb 2012 at 20:03
Hi Errol

Thanks for reply. If you enter http://www.nationalarchives.gov.uk/nra/onlinelists/GB%200069%20JAP.pdf this will take you to a Science Museum site where they list info on things J A P. If you scroll down there is a heading which may help, it is a factory publication titled '2/2 [1909] J.A.P. The J.A.P. Aero Engines J.A.Prestwich & Co. Booklet, 9p'. If you search for Science Museum Library and Archives Wroughton this brings up the web site for the archives and maybe it is possible to obtain a copy.

Best wishes

Ichabod
Back to Top
Errol Martyn View Drop Down
Senior Member
Senior Member


Joined: 17 Apr 2009
Location: New Zealand
Status: Offline
Points: 157
Post Options Post Options   Thanks (0) Thanks(0)   Quote Errol Martyn Quote  Post ReplyReply Direct Link To This Post Posted: 27 Feb 2012 at 20:50
Ichabod,
 
Many thanks, once again, for this info.
 
Cheers,
Errol
Back to Top
 Post Reply Post Reply Page  <12
  Share Topic   

Forum Jump Forum Permissions View Drop Down

Forum Software by Web Wiz Forums® version 10.03
Copyright ©2001-2011 Web Wiz Ltd.
Create your own user feedback survey
find us on Facebook Follow us on TwitterGrab our news feed