1914 Renault 70hp V-8 ENGINE

Hi John,
Yes,the Crankcase ,Timing Gear Cover,and Sump components are all cast in Aluminium, by use of patterns made from museum engine. Cylinders cast in aluminium from ADC Cirrus 1 pattern before machining to ancestral Renault profile. Cylinder Heads laminated from 7 sections cast in silicone rubber moulds with low-temp alloy. There are no Pistons/Rods Crankshaft (centre) or Camshaft,but everything else is there in metal except wooden flywheel.The Prop shaft rotates. Pics attached of raw castings.[ATTACH=CONFIG]250395[/ATTACH][ATTACH=CONFIG]250396[/ATTACH][ATTACH=CONFIG]250397[/ATTACH][ATTACH=CONFIG]250398[/ATTACH][ATTACH=CONFIG]250399[/ATTACH]

Brian, are the engine cases actual castings or did you use alternate materials? Either way a huge endeavour.

Regards
John

Thanks for your kind approval P & P.
I got my buddy in Moron, Argentina, to photograph his Dataplate square on (image attached of the Wolseley Renault 80hp plate) then photoshopped wording changes,top and bottom.I then gave the revised image to a local Nameplate/Control Panel fabricator who do both engraved and etched ‘plates.The image is then used to create an acid resist overlay to a sheet brass (bit like decal) so that only the “ground” between letters and data-cartouches is acid-etched away. I drank the whisky first and then hit the stamps as if anybody had done it by hand (how true). Fixing was by 4 Hammer-Drive Pins into the Ali Sump. [ATTACH=CONFIG]250390[/ATTACH][ATTACH=CONFIG]250389[/ATTACH][ATTACH=CONFIG]250391[/ATTACH]

Cheers
Brian

Well done

Engineman, Sir, I doff my hat, what a great job !
Can you explain the process of photo etching your brass dataplate, certainly looks the goods.
I like how the number stamping was done with a whiskey in hand ! A true piece.

Hi again all,
More pics ref Renault 70hp V-8..Real and Dummy.
The dual-engine Test-Bed image was taken at Montrose c 1914, and shows a neat “built on the station” gallows, with at LHS a 70hp Pusher-configured unit (ducted fan and carb at prop-end) and RHS another “Pusher but an 80hp unit. For Renault V-8 type-spotters,check the valvegear .The 70hp had symmetrical heads all-round(exh pushrod on rhs of cyl.centrelines) 80hp heads were handed in 2 pairs in each bank. The 70hp, with staggered banks of cyls, had con-rods side by side on common crankpins,while 80 hp had fork/blade rods so cyls were in line across engine.The other b & w image shows a 70hp under test at Rolls Royce Derby 1915.I made a “special dataplate” for the dummy engine,photoetched on brass .This was based on a photograph of an Argentinian Museum engine, with mods to reflect place of manufacture (my garage, not BMW).[ATTACH=CONFIG]250363[/ATTACH][ATTACH=CONFIG]250364[/ATTACH][ATTACH=CONFIG]250365[/ATTACH][ATTACH=[ATTACH=CONFIG]250366[/ATTACH][ATTACH=CONFIG]250367[/ATTACH][ATTACH=CONFIG]250368[/ATTACH]

Thank you Paul,
your help with verifying that your Cirrus cylinders’ dimensions would allow me to use some new castings and modify them to Renault profile made a big difference to progress on the project. Your name is now permanently displayed by the exhibit on our “Acknowledgements” board
When I checked an ADC V-8 for cylinder profile on a DH51, I found that the scalloped fin recesses characteristic of the Renault’s side inlet valve were still there, although Halford had made the ADC engine ohv for both exhaust and inlet.
Airdisco had bought thousands of surplus Renault cylinders, which found use on the V-8 and Cirrus 1.The ADC-V-8 also retains the Renault’s outside flywheel.Anoraks-list is still pending. Cheers Brian[ATTACH=CONFIG]250350[/ATTACH][ATTACH=CONFIG]250351[/ATTACH][ATTACH=CONFIG]250352[/ATTACH]

A superb effort with the Renault Engineman! It really does look the part.
I am looking forward to seeing the fruits of your labour an the next project, the J.A.P. 🙂

Happy Christmas Engineman and all,

What a strange situation regarding the engines owners, ah well, it takes all sorts, I have a pair of series 5a Lions, one a runner, the other waiting a rebuild, they are beautiful to work on.

https://www.youtube.com/watch?v=x5xASjW6SSY

Andy

Happy Christmas Andy,
Your suggestion re Old Warden has died a death. I’ve visited twice and taken photos through the glass cover. I contacted the actual owners in Brum months ago. They refused to allow me measurement-access, even if Shuttleworth agreed.Their final excuse was there might be asbestos present ! I only asked for external measurement, with no dismantling,so was most disappointed. I have two other prospects for this operation and am very hopeful of one of them coming good in the New Year.
Thanks for your interest anyway. Napier Lions eh ? oooooooooh
Cheers
Brian

Happy Christmas Sabrejet (F86 or F100 ? )
Thanks for the offer of assistance with Richard C,but I don’t want to aggrevate the man in case he was about to send my dimensions questionnaire back ! However, if my other inquiries fail and R hasn’t responded by end of January I might take you up on your offer. Its a kind thought.
Cheers
Brian

Morning Engineman,

Take a trip down to the Shuttleworth collection, they have an example of that engine and are always happy to help people with a project such as yours.

Andy

Brian,

I’ll see the car & driver a few times in 2017 I’m sure: I’ll broach the subject if you like.

The “small car” (GN ) trundles up Shelsey Walsh in 37 secs,which puts a few modern racers to shame. However,though live I’ve yet to get a response from the intrepid pilot about running a rule under his bonnet.
Meantime, attached pics show mock-up (prior to real thing)of a 1908 J.A.P.[ATTACH=CONFIG]250335[/ATTACH]cylinder/head we do know about. Back on the Renault, I still have to add a few oil leaks.[ATTACH=CONFIG]250333[/ATTACH]
Brian

Thanks gents, for your kind words. They make the toil worth while, after one has “given it away” having lived with it for so long. I chickened-out on making a dummy Claudel Hobson Carb when delivery date loomed and exhausts were still to do.
I could add it later, but I have a pressing commitment to get data together to build a running 1909 J.A.P. 35hp V-8 ohv aero engine. It’s a simpler engine ,but reference motors are few (four) and owners/guardians very shy about letting one measure things(even externally.Back to the Renault….when I got to the first build-up of the 839 parts(inc fasteners) the challenge was indeed becoming “enjoyable”. A Clerget (for the Museum’s Camel ) was going to be next, but I decided I should let another volunteer have a go, or tidy up the replica that is installed at the moment.
Attached another image of Le Moteur, and BE2a[ATTACH=CONFIG]250331[/ATTACH].
Brian

Have seen one of the V8 JAP’s running: works very impressively in a small car!

Thanks gents, for your kind words. They make the toil worth while, after one has “given it away” having lived with it for so long. I chickened-out on making a dummy Claudel Hobson Carb when delivery date loomed and exhausts were still to do.
I could add it later, but I have a pressing commitment to get data together to build a running 1909 J.A.P. 35hp V-8 ohv aero engine. It’s a simpler engine ,but reference motors are few (four) and owners/guardians very shy about letting one measure things(even externally.Back to the Renault….when I got to the first build-up of the 839 parts(inc fasteners) the challenge was indeed becoming “enjoyable”. A Clerget (for the Museum’s Camel ) was going to be next, but I decided I should let another volunteer have a go, or tidy up the replica that is installed at the moment.
Attached another image of Le Moteur, and BE2a[ATTACH=CONFIG]250331[/ATTACH].
Brian

That looks fantastic Brian, well done, did you enjoy the challenge, and would you make another ?

How about a Gnome next?

Please post some more photos when you get a chance

Jules

Noooo! RAF 4 surely? Then do a BE.12.

That looks fantastic Brian, well done, did you enjoy the challenge, and would you make another ?

How about a Gnome next?

Please post some more photos when you get a chance

Jules

Further to my update on the “Visit to Montrose Air Station ” thread,here are few pictures of my dummy-engine effort,completed August 1st 2016,after two years work.It necessitated 86 drawings to be created to make the parts,although its not a runner.
Brian[ATTACH=CONFIG]250328[/ATTACH][ATTACH=CONFIG]250329[/ATTACH]

The next revision was the WS which i read had a different oil pump layout, one being internal?
there is one in Canada, see

http://en.wikipedia.org/wiki/Renault_80_hp

There is also this but I dont know what it is

http://www.powerhousemuseum.com/collection/database/?irn=213294

Er…can’t Renault help??

Unfortunately, the “modern” industrial history in France is a never ending story starting from 1789.
Renault have changed many times his statut from private venture to national company…
Many companies didńt survive these changes. ( bugatti, Voisin, Caudron, Morane Saulnier, Dewoitine, Nieuport etc etc…)
Moreover many tech drawings was burned ( same for every wood made planes…) by germans during the ww2.

Historic Aeronautic archives are a still a real problem in France. Since a decade a kind of new efforts are made…let´s cross fingers.
You probably will have more chance for your search anywhere but in France.

olivier