Recent Posts

Pages: [1] 2 3 ... 10
1
Your Own Design / Re: Thompson Engine From Scratch
« Last post by Jasonb on Today at 04:32:56 PM »
Thanks for all the appreciative comments, even from those who like the shade of green. It's growing on me a bit but having always pictured this one being painted with Kawasaki green in my mind while designing and building the VHT Kermit Green was a bit of a let down  :disappointed: There is always this option if I still don't like it.



But onward to the important bit before anyone thinks I may not have fully finished the engine before moving on to the Heinrici. Unlike a few engines this one seemed to run better after stripping and painting and starts first time after a pull of the cord which I can get 5-6 winds around the starter pully. It's still running quite hot particularly when I lean it out which also ups the revs and makes the throttle a bit more responsive. Richening the mixture a bit slows it down to a more pleasing (to me) speed but then the throttle has little effect.

I did not play with the timing on the video as it is hard to do up the adjuster one handed and did not want to risk things coming loose as during initial testing that did happen and the brass ignition contact went through the open gears and was spat out the other side in several pieces :'(

The exposed gears and crank make it a bit noisy but it does make for a more interesting engine when running rather than having everything hidden away inside a crankcase and the dirty oil seems to wipe off Ok ;)

2
Additive Machining / Re: New 3D Printer
« Last post by maury on Today at 04:25:54 PM »
Allen, thanks for tuning in.

Also thanks for the tip on the Prusa slicer. I downloaded it, and found a few things I already like. It runs on my 32 bit shop computer for one, a big advantage for me. It seems at first glance to be a bit more mature software, but since I'm used to the cura slicer I'll have to do a project with it to find where everything is. I'm too new to 3D printing to know how to use the nuances between each to decide which one is better for an individual project.

Still working on the clock.

maury
3
From Plans / Re: Ohrndorf 5 Cylinder Radial
« Last post by Vixen on Today at 04:20:22 PM »
 :ThumbsUp:
Mike
4
From Plans / Re: Ohrndorf 5 Cylinder Radial
« Last post by Laurentic on Today at 03:48:04 PM »
Mike - exactly! 

Like I said,  "Different ships different splices as the saying goes, not to say either way is right or wrong, just the way one sees it!"

You pays yer money and yer takes yer choice - as another saying goes!!

Chris
5
Introduce Yourself / Re: Hello from Walsall in the Black Country
« Last post by Roger B on Today at 03:23:51 PM »
welcome to the Forum  :ThumbsUp:  :ThumbsUp:
6
From Plans / Re: Ohrndorf 5 Cylinder Radial
« Last post by Vixen on Today at 03:19:54 PM »
Chris,

My five cylinder 40 cc Seidel ST540 radial engine does not have a separate oil bath for the gears and cam section, it uses the oil mist in the fuel (10%).

My big, 350 cc, Bristol Mercury engines have a wet sump and the oil bath arrangement for the cam and gears.

Seems either arrangement can be made to work.

Mike
7
Vehicles & Models / Re: M5 Stuart Light Tank
« Last post by Vixen on Today at 03:01:17 PM »
I am pleased you like the content of this thread. Tracked vehicle design is a fascinating subject.

I too have enjoyed looking through my old photo albums, preparing this stuff and re-living an interesting journey of discovery.

Stay safe

Mike   :atcomputer:
8
Introduce Yourself / Re: Hello from Walsall in the Black Country
« Last post by RayW on Today at 03:00:39 PM »
Hemingway Kits sell the full set of drawings and construction notes for 28. It looks like this is the full set of Model Engineer articles. The link is http://www.hemingwaykits.com/acatalog/The_Seal___Edgar_T_Westbury.html
9
Your Own Design / Re: Thompson Engine From Scratch
« Last post by b.lindsey on Today at 02:30:03 PM »
Very nice Jason. I like the color too!!

Bill
10
From Plans / Re: Ohrndorf 5 Cylinder Radial
« Last post by Laurentic on Today at 02:00:17 PM »
Per - there is not just the ball race in the gearbox/cam section there are also the gears and the cams.  It was to ensure that these were well lubricated that on my 3 cyl radial I went for a separate section (from the crankcase) with an oil bath, perhaps Peter had the same reasoning I don't know.  Different ships different splices as the saying goes, not to say either way is right or wrong, just the way one sees it!

Chris
Pages: [1] 2 3 ... 10