Steel cable transmission

[Gordon Ferguson]

Hate to admit that he is right , but Marc's solution re 3d printing is the obvious way to go ......... My ramblings were "so last century" 

[Arno Boudoiron]

Ouch! Challenging work! 
I have a dummy question: do the pulleys have to turn?
How many pulleys do you need for your project?

I noticed: According to the pictures there are 10 spokes, but 6 on the original drawing. Am I wrong?

Awesome work
Cheers Peter

A.

[Peter_T1958]

Hi gents

It is quite incredible how much assistance I am given from this community! Even support in 3d printing was offered from a member...  I am overwhelmed! Thanks a lot!

@Gordon and Marc
You are certainly right, that 3d printing is the obvious way to go ... and it would surely give an excellent result. Unfortunately I have no experience in that technologie up to now.

Gordon, your ideas aren't "so last century" especially in relation to what I am able to do on my desk. So thank you very much for your "ramblings", they helped a lot and provided a fresh impetus to my work: Why not trying it the same way the original was probably made! Yeah, that is it, and it's clear now: I do not have to do the full circle... This doesn't make it too much easier, but it is a new approach I will follow!

@Arno

I have a dummy question: do the pulleys have to turn?
How many pulleys do you need for your project?
I noticed: According to the pictures there are 10 spokes, but 6 on the original drawing. Am I wrong?

1) The pulleys (I need two of them) won't turn - this will be a static model
2) It is almost shameful that I hadn't noticed that until now. You are right: On the original drawing there are only six spokes; in the picture there are always ten. I don't understand how this could happen. I looked at the photos surely a  thousend times ... 
Thanks, Arno, you saved my day!

@Chuck


As I notice now the shape of the outher rim isn't exact the same as in the factory drawings too. I urgently have to redo my sketches!!!   

Peter

[Peter_T1958]

Hate to admit that he is right , but Marc's solution re 3d printing is the obvious way to go.

As I wrote before I have no experience in that technologie up to now, nevertheless the problem was solved in this way sooner than expected...

After several attempts I had to admit, that there was no reasonable solution in Styrene to this problem (too weak). Therefore I was very happy to accept Volkers grateful offer to do the 3d data model for me, so to speak as a Christmas present :-)
Thanks a lot Volker!!!

Yesterday I received the result from Shapeways. Very clean print!




Cheers, Peter

[Gordon Ferguson]

Great result. The whole thing is coming together rather well

[Arno Boudoiron]

Nice! 

[Ray Dunakin]

Looks great!

[Chuck Doan]

Very nice! I could not imagine scratchbuilding two of those.

[finescalerr]

Shapeways to the rescue again. Excellent! -- Russ

[Design-HSB]

Hello Volker and Peter,

that is successful teamwork.

[Peter_T1958]

That is nearly true, but Volker himself is the team    All I could contribute was a drawing and some mesurements!

BTW: He created that virtually overnight - I could hardly believe it!

[lab-dad]

That is neat!
Will it be used "as-is" or will it be cast in brass?
The reason I ask is you said the styrene was not strong enough.
-Marty

[marc_reusser]

Simply lovely.

[Max Corey]

Very nice.  Interesting technology I know very little about.  Only way I would have otherwise thought to make those would be to either cast them in aluminum or machine them with the CNC mill at Kalamazoo Industries, both some work.

[Peter_T1958]

Will it be used "as-is" or will it be cast in brass?
The reason I ask is you said the styrene was not strong enough.
-Marty

Hi Marty
I do not have any experience in such material yet, but I intend to use it "as-is". I meant, the styrene wasn't strong enough to work on with saw and file and without Volkers help I would have had to change to brass. But without lathe or milling machine that would have been a huge challenge ...

May I also take this opportunity of asking you where do you get the brass bevel gears on your breathtaking Shay (a feast for the eyes!!!)?

Peter