Search found 6545 matches

by GlennW
Tue Jul 17, 2018 4:25 pm
Forum: I.C. Engines
Topic: O-Rings as piston rings
Replies: 22
Views: 748

Re: O-Rings as piston rings

Italy, what a great place!

Some day I'll make it back there.
by GlennW
Tue Jul 17, 2018 2:10 pm
Forum: I.C. Engines
Topic: O-Rings as piston rings
Replies: 22
Views: 748

Re: O-Rings as piston rings

tornitore45 wrote:
Tue Jul 17, 2018 5:39 am
used O-rings for a Tich.
Interesting, but

What is a Tich? Steam? OR IC?
I'm guessing that your Hoglet is internal combustion?
Hoglet.jpg
by GlennW
Mon Jul 16, 2018 9:49 am
Forum: General Discussion
Topic: TGP for hydraulics
Replies: 21
Views: 654

Re: TGP for hydraulics

Check out a screen door closer at Ace or Home Depot, etc. as they should have a chrome plated shaft about that diameter.

I just made some hydraulic shafts from 12mm chrome plated shaft, but I don't see anything near 1/4" available.
by GlennW
Tue Jul 10, 2018 7:01 pm
Forum: Welding
Topic: Eye protection for silver soldering?
Replies: 5
Views: 250

Re: Eye protection for silver soldering?

I just wear my regular prescription glasses and have never given it another thought.
by GlennW
Tue Jul 10, 2018 10:36 am
Forum: I.C. Engines
Topic: O-Rings as piston rings
Replies: 22
Views: 748

Re: O-Rings as piston rings

I'm not used to that. :)
by GlennW
Tue Jul 10, 2018 8:53 am
Forum: I.C. Engines
Topic: O-Rings as piston rings
Replies: 22
Views: 748

Re: O-Rings as piston rings

warmstrong1955 wrote:
Tue Jul 10, 2018 7:49 am
Not sure I recall correctly, but I think Bill's problem at first was seal drag. (friction) So Mauro's comment about 'deepening the groove', is a sound one.
That is what I was referring to with the "trial and error" method.
by GlennW
Tue Jul 10, 2018 7:31 am
Forum: I.C. Engines
Topic: O-Rings as piston rings
Replies: 22
Views: 748

Re: O-Rings as piston rings

I doubt that you will find specific application data for what you are wanting to do, so most likely the "trial and error" method will come into play! The info I posted is for a linear actuating cylinder with an O-ringed piston. It seems to me the "real" Bill (seal killer) did a similar project and g...
by GlennW
Mon Jul 09, 2018 4:23 pm
Forum: I.C. Engines
Topic: O-Rings as piston rings
Replies: 22
Views: 748

Re: O-Rings as piston rings

According to my O-ring catalog:

Clearance between the piston and cylinder to be .005"

Groove diameter to be bore diameter minus .114"

Groove width to be .090"

This for a moving piston seal, but it does not specify if hydraulic or pneumatic.
by GlennW
Sun Jul 01, 2018 9:37 pm
Forum: The Junk Drawer
Topic: Tesla cars
Replies: 29
Views: 1293

Re: Tesla cars

To clarify my first post, in my opinion, Tesla is the leader in electric cars and battery technology, not the big 3.
by GlennW
Fri Jun 29, 2018 6:06 pm
Forum: The Junk Drawer
Topic: Tesla cars
Replies: 29
Views: 1293

Re: Tesla cars

Mr Ron wrote:
Fri Jun 29, 2018 3:04 pm
If he would concentrate all his efforts on just one thing like cars instead of trying to reinvent the world, he might just be competitive with GM, Ford and Chrysler.
Actually, GM, Ford, and Chrysler are the ones that can't compete with Tesla!
by GlennW
Wed Jun 27, 2018 10:56 am
Forum: Home Shop CNC
Topic: Mirroring a part
Replies: 7
Views: 648

Re: Mirroring a part

I usually just plow ahead and make the mistakes so I know the answers for later... I have mirrored parts before, but as you have already done, I draw it accordingly, and just flip the CAD drawing and generate new code. I always drip feed the machine anyway. I'm kind of curious to try the "mirror" fu...
by GlennW
Wed Jun 27, 2018 10:06 am
Forum: Home Shop CNC
Topic: Mirroring a part
Replies: 7
Views: 648

Re: Mirroring a part

I've never tried the "Mirror" function on my controller, but I'm curious if the location of the "part zero" comes into play as it does in CAD.

I forgot to root through the manual last night to see what is involved.