Here is a list of all the postings Bikepete has made in our forums. Click on a thread name to jump to the thread.
Thread: Hardinge HLV-H KL-1 |
29/05/2023 11:03:24 |
Russ, the spindle dimensions are readily available online per e.g. here and suggest you read this whole thread before expending too much effort on a metric banjo: (there's a dimensioned drawing of the metric banjo on page 2 of that thread if you do feel the need to make one) Edited By Bikepete on 29/05/2023 11:12:34 |
Thread: Question about selling |
24/11/2022 16:33:55 |
Also: **LINK** |
Thread: Frustration |
17/09/2022 08:09:49 |
Unless I missed something, isn't the course of least resistance here just to buy a cheap webcam (under a fiver posted via UK Ebay, assume similar in NZ), go through whatever rigmarole they want, and have done? |
Thread: Workshop Machines - How Big is Too Big? |
16/09/2022 21:03:52 |
I am probably at the heavy end of the spectrum with a 2 ton mill and an HLV lathe in an only slightly larger than average single garage... Now facing a house move (after 20 years) and will probably have to get in professionals. It'll cost, but I don't plan on making a habit of moving and once they're in place I do enjoy using these bigger old machines. |
Thread: CO2 - Dumb question |
15/08/2022 15:00:40 |
Posted by blowlamp on 15/08/2022 14:20:07:
Posted by Bikepete on 15/08/2022 13:57:37:
I'm afraid I disagree. Changing the subject and "moving on" means you do not have to take responsibility for the graph and argument that you promoted. You promoted a graph using USA data which covers only ca. 1.87% of the earth's surface, and claimed that this disproved the global CO2 vs temperature correlation. I provided a counter-example from a reputable source, using global data which shows a clear correlation, to demonstrate that the USA data is not globally representative. Unless you can acknowledge that the graph you posted is misleading, I do not think there's much prospect of useful further discussion.
Quoting myself: "Rather than argue with each other about whose graph is best, let's pretend for a moment that my graph is either totally wrong or doesn't exist." What you mean is that once your graph is looked at critically & in isolation it shows itself for what it is and doesn't actually support your agument very well. I like the way your graph illustrates a drop in temperature despite high CO2 and a rise in temperature with lower CO2 - over decades.
Martin. No I don't mean that at all. By concentrating on that concrete example I was just hoping you might realise that Corbyn used a clearly misleading graph. Perhaps you might then start to question why he did that, and to ponder what else could be misleading in his paper... Anyway, FWIW I found this resource really useful when I was reading up on the subject - a very readable history which takes you through all of the logical steps via which the scientific case has been made (including many mis-steps and initial wrong understandings by scientists), and how the skeptical arguments (including the ones you made, e.g. on CO2 here) have been examined and addressed... Good luck with your quest for understanding, I'd best get back to work. |
15/08/2022 13:57:37 |
Posted by blowlamp on 15/08/2022 13:33:51:
Posted by Bikepete on 15/08/2022 12:38:21:
Posted by blowlamp on 15/08/2022 12:13:00:
Posted by Bikepete on 15/08/2022 10:47:11:
Posted by blowlamp on 15/08/2022 10:11:47:
I don't see anyone explaining the lack of correlation between temperature and CO2 levels in the graph I posted on page 5, over a more than 100 year period.
Martin. That's a cherrypicked regional dataset (for the USA). Not useful evidence about global trends. And I'm unsure it's even accurate for the USA. A reverse google image search shows the graph was taken from a paper by well known climate denier Piers Corbyn. Of course there is the "one fact vs 100 scientists" thing already quoted above, but against that, would people not agree that some souces are more credible (and likely to be correct) than others? Here's a similar graph which does show global trends from the first vaguely credible source (a USA university) that came up on Google:
"...taken from a paper by well known climate denier Piers Corbyn..."
You mean this Piers Corbyn? "Piers Corbyn is an astrophysicist and Director of WeatherAction longrange (months and years ahead) forecasts. He has a First class degree in Physics from Imperial College and an MSc in Astrophysics from Queen Mary College. He has published numerous peer-reviewed scientific papers, starting from an early age, on subjects ranging from meteorology to cosmology and galaxy formation and has presented at many international conferences." Your own graph doesn't look very convincing, at either the start, the middle or the end, to be honest.
Martin.
So do you acknowledge that I answered your question with my point about the graph you posted being a regional dataset, and that this explains why it is not representative of global temperature vs CO2? If not, can you justify why USA data (bearing in mind that the USA covers ca. 1.87% of the surface area of the world) is an appropriate dataset to use to represent global trends? Edited By Bikepete on 15/08/2022 12:40:43
Rather than argue with each other about whose graph is best, let's pretend for a moment that my graph is either totally wrong or doesn't exist. If we now look at your graph in isolation, do you think it really shows that temperature & CO2 track one another? I see some divergence (over decades) where I wouldn't expect it, so I don't think either of us can rely on our graphs to tell the whole story. Even if temperature & CO2 were in lockstep, it still needs to be proved that human activity, rather than (say) Solar activity caused it and also that raised CO2 levels are a cause rather than an effect of warming. What's important to me is that we can discuss matters like this.
Martin.
Martin. I'm afraid I disagree. Changing the subject and "moving on" means you do not have to take responsibility for the graph and argument that you promoted. You promoted a graph using USA data which covers only ca. 1.87% of the earth's surface, and claimed that this disproved the global CO2 vs temperature correlation. I provided a counter-example from a reputable source, using global data which shows a clear correlation, to demonstrate that the USA data is not globally representative. Unless you can acknowledge that the graph you posted is misleading, I do not think there's much prospect of useful further discussion. |
15/08/2022 12:38:21 |
Posted by blowlamp on 15/08/2022 12:13:00:
Posted by Bikepete on 15/08/2022 10:47:11:
Posted by blowlamp on 15/08/2022 10:11:47:
I don't see anyone explaining the lack of correlation between temperature and CO2 levels in the graph I posted on page 5, over a more than 100 year period.
Martin. That's a cherrypicked regional dataset (for the USA). Not useful evidence about global trends. And I'm unsure it's even accurate for the USA. A reverse google image search shows the graph was taken from a paper by well known climate denier Piers Corbyn. Of course there is the "one fact vs 100 scientists" thing already quoted above, but against that, would people not agree that some souces are more credible (and likely to be correct) than others? Here's a similar graph which does show global trends from the first vaguely credible source (a USA university) that came up on Google:
"...taken from a paper by well known climate denier Piers Corbyn..."
You mean this Piers Corbyn? "Piers Corbyn is an astrophysicist and Director of WeatherAction longrange (months and years ahead) forecasts. He has a First class degree in Physics from Imperial College and an MSc in Astrophysics from Queen Mary College. He has published numerous peer-reviewed scientific papers, starting from an early age, on subjects ranging from meteorology to cosmology and galaxy formation and has presented at many international conferences." Your own graph doesn't look very convincing, at either the start, the middle or the end, to be honest.
Martin.
So do you acknowledge that I answered your question with my point about the graph you posted being a regional dataset, and that this explains why it is not representative of global temperature vs CO2? If not, can you justify why USA data (bearing in mind that the USA covers ca. 1.87% of the surface area of the world) is an appropriate dataset to use to represent global trends? Edited By Bikepete on 15/08/2022 12:40:43 |
15/08/2022 10:47:11 |
Posted by blowlamp on 15/08/2022 10:11:47:
I don't see anyone explaining the lack of correlation between temperature and CO2 levels in the graph I posted on page 5, over a more than 100 year period.
Martin. That's a cherrypicked regional dataset (for the USA). Not useful evidence about global trends. And I'm unsure it's even accurate for the USA. A reverse google image search shows the graph was taken from a paper by well known climate denier Piers Corbyn. Of course there is the "one fact vs 100 scientists" thing already quoted above, but against that, would people not agree that some souces are more credible (and likely to be correct) than others? Here's a similar graph which does show global trends from the first vaguely credible source (a USA university) that came up on Google:
|
Thread: How to machine a flat and a slot on each end of small bar that are in line with eachother |
09/08/2022 13:06:31 |
Posted by Rex Hanman on 09/08/2022 12:53:18:
Posted by Bikepete on 09/08/2022 12:44:22:
Use a scrap end of rectangular bar stock to hold it by the 3mm diameter section (split and clamp screw). Then you can do slotting & milling operations on both ends in one operation, assuming you have enough travel, or easy enough to re-position if not. And you can just flip it over to do the other side. Had the same idea but the 3mm part won't pass through a 3 mm hole, though something like a big end cap or bearing cap would hold it. Good point! |
09/08/2022 12:44:22 |
Use a scrap end of rectangular bar stock to hold it by the 3mm diameter section (split and clamp screw). Then you can do slotting & milling operations on both ends in one operation, assuming you have enough travel, or easy enough to re-position if not. And you can just flip it over to do the other side. |
Thread: Hardinge HLV |
29/07/2022 11:01:26 |
I moved from a Myford ML7 to a narrow bed HLV, no regrets at all... just do try to get one with as many accessories as you can as you'll struggle to find them separately. One thing not yet mentioned is powering it - do you have three phase? The motor on mine (and I think most) is two speed three phase and 380V - and you don't really want to replace it as it's (a) ridiculously heavy and (b) super-finely balanced, allegedly... I've done a VFD conversion with a step-up transformer (and some re-wiring of the electrics) to run it on single phase mains, but a rotary converter would be easier, assuming you don't have 'real' three phase on hand. |
Thread: Changing my Email client |
22/03/2022 22:40:08 |
Posted by Dr. MC Black on 22/03/2022 22:05:05:
Will Pegasus work on an AppleMac running OS 10.6.8 ? It's a Windows only program (XP onwards). I believe there are various ways to run Windows programs on Mac OS - but I have no direct experience. |
22/03/2022 14:42:58 |
Posted by Dr. MC Black on 22/03/2022 13:56:29:
Eudora allows redirection as distinct from forwarding. I have never found any other email client software that allows redirection. Pegasus Mail has this, assuming by redirect you mean what I think you mean (forward unaltered aka "bounce", so it reaches your chosen recipient pretty much the same - with just an extra line in the headers to document the redirection - as if it had been sent to them by the original sender - thus allowing your recipient to reply by default to the original sender, not to you). It's still under active development (since 1990!) and has worked brilliantly for me for 20+ years. But it's arguably not as user-friendly as some alternatives (perhaps because it's so feature-rich and configurable), and it's also heavily dependent on the continued health and dedication of just one main developer, so maybe not an obvious first choice. But worth a look, IMO... (and it's free for both private and business use). Edited By Bikepete on 22/03/2022 15:07:46 |
Thread: Holbrook lathe on Ebay |
28/10/2021 13:39:14 |
See here: https://www.model-engineer.co.uk/forums/postings.asp?th=125235&p=1 Edited By Bikepete on 28/10/2021 13:43:10 |
Thread: Hardinge HLV H |
01/10/2021 11:48:24 |
A quick further thought - it may be that importers of HLV "clones" can provide accessories such as backplates or chucks, if making them yourself is not the preferred option. In the UK, this supplier says "We have a complete range of tooling and spindle tooling to fit the Hardinge Lathes as well as our popular new Linear Cyclematic Lathes": and they also list a brand new Hardinge taper fit faceplate on UK Ebay: Fernando, maybe you can also find a EU importer of one of the "clone" brands who might also be able to provide accessories to fit your HLV-H? |
22/09/2021 16:08:11 |
Hi Fernando, I checked the page you found at Shars.com, but I could only see chucks there with the D-series mounting. So unless I missed something, those will not be relevant for your lathe. Buying used is risky. I have the older version of this lathe (the narrow bed HLV) and the chucks that came with it are very worn. Used chucks with the Hardinge taper mount could also be worn, and are rare, and will still be quite expensive... Do you have another lathe which you could use to make a new backplate yourself? Congratulations by the way - you have a great lathe which should be a pleasure to use. And remember, you can do a LOT of work with just collets, until a solution can be found for the chucks. If you already have a set of ER collets, by the way, you can use an adaptor like this: and similar items are also available for ER 40 collets. This lets you cover a big range of diameters without spending a LOT of money on a full set of 5C collets...
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22/09/2021 11:42:30 |
The difficulty is that the Hardinge spindle nose (a 4 degree taper with locking pin) is pretty much specific to that brand and backplates and chucks to fit are hard to find. There are some available (not cheap!) in the USA e.g. but I've not seen them advertised in the UK or Europe - would also be interested to hear if anyone has a source! Another option is to make one - Google Images search for "Hardinge taper drawing" will find the spindle dimensions... A small chuck could also be mounted using the 5c spindle taper e.g.
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Thread: Use Chequer (Tread) Plate as Roofing Sheet? |
05/08/2021 08:51:17 |
Is EPDM (aka rubber membrane) an option rather than felt? Nowadays I always prefer it - it lasts basically forever, 20 years so far on my shed with no issues, advertised as 40+ years expected. Offcuts, adhesive etc. readily available on Ebay. Still needs a ply base, but because it never leaks that doesn't deteriorate. |
Thread: Upvc front door |
12/07/2021 10:59:33 |
Posted by Bob Brown 1 on 11/07/2021 14:46:54:
The UK introduced a “right to repair” law on July 8. However, it does give manufacturers a two-year window to make the necessary changes to abide by the new legislation. While true, this is unfortunately irrelevant to door locks. The new law covers only the following items (taken from a convenient summary from Which? but also confirmed by the actual legislation) For now, the right to repair laws only cover:
They also cover non-consumer electronics, such as light sources, electric motors, refrigerators with a direct sales function (eg fridges in supermarkets, vending machines for cold drinks), power transformers and welding equipment. |
Thread: Is buying a custom ground tool my only option?? |
30/06/2021 19:01:20 |
Could you modify a lazy susan bearing maybe? Available big as you want, cheap as chips.... e.g. |
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