Stirling Fan

[kustomkb]

Sorry about your cousin Doc,

Your work on your stirling is looking great!

Thanks for the pics.

 

[doc1955]

Thanks ! Dean
Thanks ! KustomKB

The clamps I am using I got from a 5s sale they had where I work. Every month they sell off thing they don't use or excess things.
I thing I payed $10 for a box of miscellaneous stuff and they were in the box.
I have a bunch of of toe clamps to way more than I'll ever use was going to take some pics and offer them here for shipping cost just haven't got around to it.

 

[doc1955]

Here is what was in a box I purchased at a sale no one else bid on it I got it for $10.00

Here is a link to the carrlane page

http://www.carrlane.com/Catalog/index.cfm/index.cfm?FuseAction=PartCheck&Product_ID=539&pn=CL-1-SAC

Here is the link to the carrlane page for this clamp.
http://www.carrlane.com/Catalog/index.cfm/index.cfm?FuseAction=PartCheck&Product_ID=539&pn=CL-15-SAC

If anyone could use any and are willing to pay shipping cost they are welcome to let me know.
There are way more that I'll ever use. Usually you only need 3 to clamp plates or parts down.

 

[doc1955]

Here is another box I got this one for $15.00

Unfortunately most all the clamps were for 5/8 bolts.

Again if anyone thinks they could use any and are willing to pay shipping let me know.

 

[Deanofid]

Doc, thanks for the generous offer. I'll send a PM about a few of these.

Dean

 

[doc1955]

Well it's been a week since I turned a spindle it been hot and humid here plus all kinds of storms.
They are saying the weather is going to start settling down I hope they are right.
I need to get moving the sooner I get done the sooner I'll have a breeze :big: :big:

I may have to break down and get air installed.

 

[doc1955]

Well I did a little in the shop today. Every time I get some time for the shop it has to be hot and humid!
Anyway I started on the connecting rods.

Grabbed some stock and milled down the thickness to size.

Scribed out position of holes.

After drill and reaming holes I took a 1/4 stripper bolt(shoulder screw)and mounted iy with a 5c collet to cut under cuts and cut end radius on each rod.

I clamped a piece of stock to my material to just have a tad more control as I wanted to climb cut around the boss to get a better finish.

I have found as long as you keep your end mil size small you can climb or conventional cut with out to many problems.

Then I put them back straight in the vise and milled the sides. All this milling was done to scribe lines just though I'd mention that. I scribe a line make my cut and blend to it.

Here they are still attached to the main stock.

And cut off.

Now I need to set them up and mill the taper on the side to taper the small end down the the proper size and mill the slot oh yeah the pockets it the sides also. Couldn't take the heat even with a fan running so it will have to wait until next time. I really do have to convince the miss's that we need to put air in the shop.

 

[Deanofid]

That looks like a good way to do two at a time, Doc. A nice long lever gave you a
a lot of control doing the radii, too. Good thinking!

Dean

 

[ksouers]

Nice one, Doc. Or is that two? ;D

 

[doc1955]

Finished the connecting rods and started the displacer head.

Cutting pocket.

Cutting taper used a drill to locate part for taper. Used a .062 in the small end then calculated what size I needed in the larg end to put it at the right angle.

Just need to be debured and a little blending.



Squared up some stock for the heads.

Dialed in on the lathe in the 4 jaw to cut the interface for the cylinder and drill and ream center hole for the bushing for the displacer rod.

Back to the mill.

Thats it for today next time finish the heads and start the bearing standards.

 

[Deanofid]

The rods look nice, Doc. Fine milling work, and makes for a good start on the finishing job.

Dean

 

[doc1955]

Thanks Kevin!
Thanks Dean!

I played hookie and called in and took a vacation day so I could play in the shop for a while today.


Set up and drilled the bolt pattern for mounting to the displacer. Nice thing was these are symmetrical
so one move on x and y and just rotate part in vise against stop and you can drill ll the holes in one set up.

Holes spot drilled.

\

drilling holes

set up and mill steps in the side for bearing standard mounting surfaces.

drill and tap holes to mount bearing standards

parts completed

material for the bearing standards

Don't know if it was ever mentioned but when you have more than 1 part to do put several layers of paper in the front and all the parts will be held securely.

Holes drilled the bearing hole drilled and reamed to size.

parts pined together and used to set parts at angle in vise with a set block uder small hole side.

Angle milled.

parts with angles milled on both sides.

parts mounted with stripper bolt in 5c collet to mill end radius again clamped lever to parts to help control swing.

Man I like my stripper bolts!

Part completed.

Oh darn the Noid is pointing out we're missing a couple parts.
Seems I only made 2 bearing standard so I get to do them again oh well.

After I get the next 2 bearing standards done I'll give the crank arms a go.

 

[Deanofid]

Thanks for the descriptions and pics, Doc. The assembly shots are looking great!

Dean

 

[ksouers]

Wow, Doc. The rods look really great.

Yep, I like symmetric parts, too. Makes it really easy on the set ups.
The bearing standards came out great. Ignore the Noid, he don't know anything ;D

 

[doc1955]

Thanks for the comments Dean and Kevin I appreciate it.
Still have not did any practice soldering yet need to try and get that done before I work on the real thing. I'd hate to get the fan blades made up only to mess up the soldering.

 

[b.lindsey]

Doc,
You've been making great progress since I last checked the thread and all the assembly shots look great also. There's a lot of work in these little fans, but they are sure worth it just to sit back and watch them run.

Bill

 

[doc1955]

Thanks Bill
I've looked at and thought about building my own for some time.
Just hope I'm up to the challenge as I know how finicky stirlings can be.
Plus the fan has me a lttle concerned I've done some silver soldering but defiantly not my forte now if it was tig welding something I wouldn't be sweating it.
I just need to get some test pieces made and get after it.
I really like the looks of Deans stirling he just finished it was a super build!

 

[b.lindsey]

Doc,
This may seem like heresy but it worked quite well on my mini-sterling fan using Jerry's plans. Rather than soft or silver soldering them to the hub, I used JB Weld epoxy. IIRC I used the quick setting version, but had plenty of time to clean up the joints and leave a nice little fillet where the base of the blades fit into the slots on the hub. After a couple of years now and lots of run time, they haven't let go yet.

Bill

 

[doc1955]

Thanks Bill if my practice pieces don't go smoothly I'll keep that in mind.
I believe I've used that on some cast iron once and had really good luck with it.

 

[larry1]

Doc, As always you work looks truly great,wish my work was half as good. larry1