Edwards Radial5 converted to metric

Home Model Engine Machinist Forum

Help Support Home Model Engine Machinist Forum:

This site may earn a commission from merchant affiliate links, including eBay, Amazon, and others.

Michael Rosenbauer

Well-Known Member
Joined
Nov 11, 2019
Messages
62
Reaction score
20
Location
Germany
Introducion:
I found the Plan for the Edwards Radial 5 at "CRABCAD" the plan was "provided" as open cource by Robert Sigler.
My decision was to convert the drawings to metric dimensions draw them with DesignCAD and machine it.
Some drawings are modified, because I feel not convenient with Mr. Siglers solutions.
When I draw the plan I was easy convicted to modify my small mill Optimum BF20 to a CNC version.
Some of the parts are not realy able to realise with a conventional mill for example the cam disc.

I started with the cam housing, and then with the crank housing.
 

Attachments

  • DSC04078.JPG
    DSC04078.JPG
    125.2 KB · Views: 439
  • DSC04077.JPG
    DSC04077.JPG
    147.5 KB · Views: 450
  • DSC04081.JPG
    DSC04081.JPG
    223.3 KB · Views: 427
  • DSC04085.JPG
    DSC04085.JPG
    199.3 KB · Views: 444
  • DSC04086.JPG
    DSC04086.JPG
    162.1 KB · Views: 449
Hello Jos,
thanks ! Yes I make two . One to sell cheap, just for the material´s at the next project.
I sell the better one ;-).
Can you explain how you machine a cam?
Did you build it imperial ?
Where did you buy the gears?
I would appreciate if you can help with an adress
 
Last edited:
Hallo Michael,
I made a dividing disc with 360 holes and used it to mill each cam lobe according the lift chart that is supplied with the Edwards drawings. It is fully explained in the thread about my Edwards radial 5 build. Because it wat the most difficult part, it was the first part I made. If this didn't work, there was no point in proceeding with other parts. Because of this, you will find the post on this subject in the beginning of the thread.

About gears: the Mädler company in your home country offers a vast range of metric size gears so I think you don't have to use imperial sizes.

Grüsse aus Holland,
Jos
 
Hello Jos,
yes I could find anything needed by Mädler.
I watched your tread yesterday and I am very impressed of your craftsmanship.
 
I make some progress
10 Zylinder completed. 27.00mm bore and beginning with the Cylinder heads.
I made 2 tools. One for the Cylinder finalisation on the laith.
the second tool is for fixatation of the cylinderhead. You can find it in the vice;)
I started today with the cylinderheads. I hope I finish them end of next week.
The CNC was also incharged but it was a little fail, I converted the bearing bore up to 14,25 but the bearings I will use have a 14mm outer diameter. :rolleyes:
So I know now the CNC can make it:D
 

Attachments

  • DSC04108.JPG
    DSC04108.JPG
    47.6 KB · Views: 427
  • DSC04115.JPG
    DSC04115.JPG
    147.9 KB · Views: 446
  • DSC04106.JPG
    DSC04106.JPG
    178.2 KB · Views: 447
  • DSC04119.JPG
    DSC04119.JPG
    214.7 KB · Views: 439
  • DSC04095.JPG
    DSC04095.JPG
    133.7 KB · Views: 452
Sorry Jos for the late answer,
I converted the plan to metric and using metric sizes. So I am using M3
 
Impressive. Can U share the metric drawings?
 
Hey Peter nice to hear from you.:)
First I wanted to stay with the imperial gears, but it is so easy to get the same gear reduction (number of teeth) at the German supplier and I didnt get the imperial easy in germany.
The out side teeth gear wheels I made myself. The inside is about 40€ each. Thats Ok.
The distances are within a few tenth.
So it is easy to align.
 
Ah, that makes sense. So I assume you selected module-1, crankshaft = 18 tooth, idler-1 = 18 tooth, idler-2 = 12 tooth, ring = 48 tooth?
Look forward to your building pics!
 

Latest posts

Back
Top