Search found 284 matches

Go to advanced search

by cmfalco
Thu Aug 22, 2019 5:07 pm
Forum: Main Chat Forum
Topic: Which Bronze to use ?
Replies: 28
Views: 1604

Re: Which Bronze to use ?

USA (I believe) has 218 volts. As far as I know the lowest level of 3-phase in the U.S. is "208V," but 400V, 415V, 480V and higher are typically available in industrial areas. However, it is uncommon here for 3-phase power to be supplied to residential neighborhoods so the next step up fr...
by cmfalco
Wed Aug 21, 2019 10:16 pm
Forum: Main Chat Forum
Topic: Which Bronze to use ?
Replies: 28
Views: 1604

Re: Which Bronze to use ?

British Oxygen Co. (BOC) charge an annual rental on their cylinder which is quite extortionate We're lucky in the U.S. in that some time between the 1970s when you couldn't, and the 2000s when you could, a law must have passed that now allows us to buy, rather than rent, bottles. The last bottle I ...
by cmfalco
Wed Aug 21, 2019 3:33 pm
Forum: Main Chat Forum
Topic: Which Bronze to use ?
Replies: 28
Views: 1604

Re: Which Bronze to use ?

Everything takes up space though. I have two and one's quite big. I have two lathes in the space of one. The smaller one has an 11" (diameter) swing, but I have a rare attachment for it that sits on the ways and turns it into a 15" lathe, albeit reducing the length of the bed. I've only n...
by cmfalco
Tue Aug 20, 2019 6:46 pm
Forum: Main Chat Forum
Topic: Which Bronze to use ?
Replies: 28
Views: 1604

Re: Which Bronze to use ?

Having two lathes is a bit of a luxury... A person can't have too many lathes. The bush for the back gear on my used lathe was worn out when I bought the machine some years ago and had I not had access to a second lathe to make a new bush I would have been in trouble since it also required machinin...
by cmfalco
Sun Aug 18, 2019 8:51 pm
Forum: Main Chat Forum
Topic: PTFE tape on fuel tap unions ?
Replies: 5
Views: 495

Re: PTFE tape on fuel tap unions ?

PTFE tape is used on tapered pipe threads. If the threads are parallel the sealing is by some mechanism other than the threads. For BSPP (British Standard Pipe Parallel) threads tightening the nut on the threads presses two pieces of metal against each other (i.e. the rounded end of the pipe and its...
by cmfalco
Sun Aug 18, 2019 7:12 pm
Forum: Main Chat Forum
Topic: Which Bronze to use ?
Replies: 28
Views: 1604

Re: Which Bronze to use ?

I'd be a bit reluctant to replace either the nut or leadscrew on its own. That's an excellent point. Using the DRO I added to my mill a few months after buying it, I measured the backlash of the X and Y lead screws. For the X the backlash is 0.001" at one end and 0.002" at the other end, ...
by cmfalco
Sun Aug 18, 2019 5:13 pm
Forum: Main Chat Forum
Topic: Which Bronze to use ?
Replies: 28
Views: 1604

Re: Which Bronze to use ?

taps... are a bit of a blunt instrument. I mentioned different classes of fit with taps because I didn't know your background. This is a case of the "right" way of doing something being more complex than the much easier "possibly-OK" way and I didn't want to be a person who insi...
by cmfalco
Sat Aug 17, 2019 9:06 pm
Forum: Main Chat Forum
Topic: Which Bronze to use ?
Replies: 28
Views: 1604

Re: Which Bronze to use ?

I have six types of bronze on the shelf, including phosphor and 660. For this purpose I wouldn't hesitate to use 660. However, your real problem will be cutting threads in it with less backlash than you already have. Sorry if I'm telling you something you might already know, but taps come in various...
by cmfalco
Wed Aug 14, 2019 5:27 pm
Forum: Main Chat Forum
Topic: 1930 cam profiles.
Replies: 14
Views: 2112

Re: 1930 cam profiles.

Hi can anyone help me with 1930 model F cam profiles please. When I read this I assumed Michael wanted the cam profile, i.e. a plot of lift vs. angle. I have yet to run across such plots for any Ariel cam but measured them myself for the cams on my 1928 Model C. For what it's worth, the mild Gold S...
by cmfalco
Mon Aug 12, 2019 1:45 am
Forum: Four stroke
Topic: Single Cylinder Ignition Timing
Replies: 9
Views: 1260

Re: Single Cylinder Ignition Timing

cmfalco wrote:
Mick D wrote:my procedure is to determine a point ...
Oops, I meant to correct a typo in my previous post but screwed up and created a new post that the forum won't let me delete. So, I reduced the size of the quoted text and added this explanation.

Go to advanced search