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Member postings for peak4

Here is a list of all the postings peak4 has made in our forums. Click on a thread name to jump to the thread.

Thread: Hydrogen
09/01/2023 18:31:14
Posted by Steviegtr on 09/01/2023 09:53:14:

Has anyone thrown synthetic fuel into this yet. F1 seem to have it now. Or is that just as dirty .

Steve.

Sort of, see my post on P1 of this thread; 08/01/2023 15:59:28

What is HVO made from?
PeakHVO is synthetically made through the hydrotreatment process from vegetable oils, grease waste or residue from food industry and agriculture. These 100% renewable raw materials can be regrown when stock is needed, making it a sustainable fuel.

http://www.peakhvo.co.uk/faqs

The only trouble for me was the price per litre of 40p over their normal premium diesel.

Bill

Thread: Next Mystery Item!
09/01/2023 17:34:14
Posted by Martin King 2 on 09/01/2023 17:15:17:

Bill,

problem solved! Well done Bill, thanks so much for that stunning research.

what along, drawn out process the crown making is.

cheers, Martin

I'd originally thought it might be for drawing out cartridge brass into small cylinders, so wasn't too far off the mark.
After that I cheated and used Google .
A fresh Google search window now has an icon to the righthand end of the search box, for "Search by Image"
Right click your third image (in Opera browser anyway) and copy image URL, then paste into the Google image search box.
First hit showed an example of a similar device.

Alternatively, visit this site, where you can search Google, Bing and Yandex.
https://smallseotools.com/reverse-image-search/

I understand why some folk might be reluctant to use the latter, but it often yields interesting results, though one has to be a bit intuitive sometimes if you Russian is as limited (absent) as mine.
Also Yandex sometimes doesn't recognise the URL, maybe due to blocking somewhere with the current conflict/sanctions, although I did have problems before that, but right click the source, copy image, and paste from clipboard seems to work.

Bill

09/01/2023 16:48:47
Posted by Michael Gilligan on 09/01/2023 16:45:08:

That looks remarkably promising, Bill

MichaelG.

It looks like they made long straight ones as well as this round variety, see P16 of this pdf
https://www.qmc-sabahalsalem.com/wp-content/uploads/2019/01/museum-Digital-Book.pdf

This is a start for your patent searches
https://patents.google.com/patent/GB190207678A/en

Bill

Edited By peak4 on 09/01/2023 16:58:06

09/01/2023 16:23:21

I've no idea if this ID is correct, but could it be a dental press?
https://mcleodhistory.pastperfectonline.com/webobject/0D8A867C-28B1-4D65-A226-428217916246

Some in the US would seem to be made by WM Sharp, and one gets a mention on P 110 of this document (P117 of the pdf)
https://www.tmd.ac.jp/files/topics/40387_ext_04_5.pdf

Bill

Edited By peak4 on 09/01/2023 16:45:33

Thread: Recycling HDPE
08/01/2023 18:46:53
Posted by Vic on 08/01/2023 18:43:19:

Gosh, looks a bit messy. I’d have to wait until someone went out for the day to do that! smiley

Maybe a trip to the charity shops next week to see if anyone has donated a flat grill like the one in the video.

Bill

Thread: Hydrogen
08/01/2023 18:44:57
Posted by Michael Gilligan on 08/01/2023 18:27:57:
Posted by peak4 on 08/01/2023 15:09:40:

That graphic is Figure 9 in This Report ( p28 of 36 page pdf download)

.Thanks for the link, Bill … I have downloaded the document, to read this evening

Meanwhile, for more convenient reference, here is a decent image of Figure 9

.MichaelG.

Edited By Michael Gilligan on 08/01/2023 18:29:23

See also my second comment on this thread re HVO, which seems to have come on the scene since that report was published.
Technology moves on with liquid fuels, as it does with battery storage; I've read elsewhere about an improvement on batteries, using some sort of Iron based system, but that still needs power transmission capacity within the more domestic side of the national grid.
This might be less of an issue with electric power in the lorries and busses, which form the main reason for the report, as they are more likely to be working out of industrial estates or similar.

Bill

Thread: Recycling HDPE
08/01/2023 17:33:01

By coincidence, I was watching the abbreviated version of this video on Facebook the other day.
Turn the sound down though unless you're into repetitive electronic "music"



If you want the safely warnings added by the video producer, have a look on Youtube.

Bill

Thread: Hydrogen
08/01/2023 15:59:28

Do bear in mind that the report is over 5 years old and is primarily referring to freight & busses.

I came across this version of renewable/bio diesel the other day; Peak Oil is a local distributor, just outside Chesterfield, Derbyshire, who sell fuel and lubricants privately and commercially.
They have an unmanned 24 hour pump which dispenses their own branded diesel, which certainly burns cleaner, as seems to be evidenced by my own MOT tests.
I've not tried this HVO Diesel, available through a different pump, as it was 40p/l more expensive than their normal Super Diesel.
http://www.peakhvo.co.uk/
https://www.peakoil.co.uk/about-peak-oil/peak-oil-history/

Bill

08/01/2023 15:09:40

That graphic is Figure 9 in This Report ( p28 of 36 page pdf download)
https://www.transportenvironment.org/wp-content/uploads/2021/07/Full_%20Roadmap%20freight%20buses%20Europe_2050_FINAL%20VERSION_corrected%20(2).pdf

Bill

Thread: Micrometer Question
03/01/2023 22:06:16

At $799, I thought about it for a moment, but fortunately they seem to be discontinued.
https://www.starrett.com/metrology/product-detail/T221XL

Bill

Thread: Chinese diesel heater
03/01/2023 02:39:44
Posted by Steviegtr on 02/01/2023 21:55:26:
Posted by Robert Atkinson 2 on 02/01/2023 21:28:41
.....................

Steve, Does you unit you bought have any approval or certification marks?

Robert G8RPI.

compliance.jpg

This is the bit I find interesting/amusing.

Steve's package shows a CE mark, which at face value is a valid one, and not "China Export"
Unfortunately we don't know if it's actually valid, or a misrepresentation, deliberate or accidental
The difference is explained HERE
http://www.ce-marking.org/what-is-ce-marking.html

The IIMS, as mentioned in a post above, explain what would be a valid mark, and then show the wrong one.
https://www.iims.org.uk/uk-to-accept-ce-certified-products-with-recreational-craft-directive-until-end-of-2021/

Bill

Thread: M10 x 1.0 Fine
01/01/2023 23:31:46
Posted by Vic on 01/01/2023 22:00:50:
Posted by peak4 on 01/01/2023 12:10:21:

Would THESE do from Zoro?
https://www.zoro.co.uk/shop/fasteners/screw-plugs/m10x1-00-mf-skt-plug-screw-din908/p/ZT1086461X

Bill

They look nice, but the postage is 2 1/2 times the cost of the bolts. 😉

I've not looked today, but they regularly have good stuff on offer, which can go into stock to get above minimum order for free postage.
Check out imperial silver steel, which is what I ordered last time.
2m lengths were cheaper than 1m ones in some sizes.

Bill

01/01/2023 12:10:21

Would THESE do from Zoro?
https://www.zoro.co.uk/shop/fasteners/screw-plugs/m10x1-00-mf-skt-plug-screw-din908/p/ZT1086461X

It's worth searching for M10 extra fine, rather than just fine.

See also Taper
https://www.zoro.co.uk/shop/fasteners/screw-plugs/m10x1-00-mf-skt-pipe-plug-din906/p/ZT1086418X 

And Straight Stainless
https://www.zoro.co.uk/shop/fasteners/screw-plugs/m10x1-00-mf-skt-pipe-plug-din906-a2/p/ZT1086425X 

For other larger jobs
https://www.fusionfixings.co.uk/product/search?search=m10+extra+fine 

Bill

 

 

Edited By peak4 on 01/01/2023 12:47:27

Thread: Video Camera … Lens Bayonet
31/12/2022 20:54:15
Posted by Michael Gilligan on 31/12/2022 20:38:24:
Posted by old mart on 31/12/2022 20:30:57:

Peak 4 has the answer, that adaptor is for the Panasonic F10. The exact part number for the C mount lens adaptor is in the F10 manual. […]

.

Thanks, both … that’s just what I needed to know yes

MichaelG.

I can't edit my earlier post now, but if you follow the second link to the RadioMuseum, it looks like there was an adaptor for the F15 lenses to the earlier F10, which would explain the flange length differences, so the later F15 (B4???) lenses could be used on the F10, but not vice versa.

Bill

31/12/2022 20:12:30

Well I certainly don't know what it fits, but this seller from 2014 is including one with some other bits and claims it's for a Panasonic F10, so that might be a place to start looking.

https://www-astrosell-it.translate.goog/annuncio.php?Id=45711&_x_tr_sl=auto&_x_tr_tl=en&_x_tr_hl=en&_x_tr_pto=wapp

There seems to be quite a few of those cameras about, but I don't know which other models might share the same lens mount.

It looks like that model was superceded by the F15, but Can't find any old literature saying what mount they used, though I think both were 2/3 sensor, so I wonder if they were an early B4 mount.
The trouble is that B4 and C have totally different flange to sensor distances.

See part way down this page for the adaptor numbers for various lenses
https://www.radiomuseum.org/r/panasonic_ccd_video_camera_f10_mark_ii_vw_f1515xe.html

Bill

 

Edited By peak4 on 31/12/2022 20:46:27

Thread: Not sure what this is
30/12/2022 16:33:49

Head over to eBay and do a search on "slip gauge accessory"

There's a couple on there at the moment, though with a few more parts than your set.

Bill

Thread: Tool and Cutter Grinder Air Bearing
29/12/2022 19:39:36

I too have one which I use occasionally on my Clarkson, though it's a bit big for it really.
In my case it uses very little air at all; I have a small Gast diaphragm compressor, originally for keeping +ve pressure in underground cables.
It's very similar to an airbrush compressor, but I find the air flow is so low that it gets quite hot; it really needs an air bleed.
One thing I would consider is adding a small desiccator; mine is just the little plastic bowl type, to which I've added male and female airline connectors.

Enjoy the new toy, it really is a lot easier than whatever you've used before.

Since I last used it, I've completed a small portable compressor setup using a Gast flat twin, with a 10l pressure vessel and pressure regulator switch etc.
I've yet to try it on the air spindle, but I'm sure it will be well over spec for the job.
Have a look on Ebay UK only and search for
"air compressor pressure switch control valve"
Once you get above about £9.75, you will find some controllers complete with gauges, fittings and other useful bits.

Bill

Thread: Parallelism of carriage to spindle. Taper.
28/12/2022 20:05:39
Posted by Frances IoM on 28/12/2022 19:30:23:

Isn't a quick test for alignment to put centres in both head + tail stocks and see if a thin rule can be held vertical between them?

Surely that would only work if you know the tailstock offset is correct (i.e. zero).
One you have set up the lathe to turn parallel unsupported by the tailstock, then it might be a quick guide to re-setting the tailstock after an intentional. between centres, taper turning session.

Bill

Thread: Myford Metric Lathe Leadscrew
28/12/2022 19:55:49

N.B. read my previous post first, and get your head around why you need to maintain the indexing between gears from the spindle to the leadscrew drive.
It doesn't help that the terminology often used is misleading; whilst yours may be described as a metric lathe, the leadscrew is imperial.

If you have a thread dial indicator on your machine, there is a way to make your life easier, when cutting up to a shoulder, but reversing the lathe to run back to the start must be done electrically via the motor on a Myford.

This video provides a good explanation, and would work equally well for cutting imperial threads on a lathe with a metric leadscrew.

 

If you can't currently reverse your motor electrically, shout up and you should get some assistance on the wiring and switching.
For the time being, don't try machining with the lathe in reverse; there is a chance you could unscrew the chuck, this is only about returning the carriage for another cut.

Bill

Edited By peak4 on 28/12/2022 20:01:59

28/12/2022 19:30:31
Posted by Nick DoubleYa on 28/12/2022 19:18:04:

Thanks Mike, I think the only option is to wind the chuck back by hand for each pass? I imagine if I engage the tumbler gears to reverse it, backlash would cause thread misalignment?

It's not just the backlash, you would lose the indexing between the gears in the drive chain.
As far as I'm aware, Myford never made a S7 with a metric leadscrew; all are 8TPI
The cross and top slides had metric screws, with the appropriately marked thimbles.
On the end of the leadscrew, you might have a hand wheel; on an imperial lathe it has 125 divisions, whereas on a metric one, it will have a different number. (I'm not sure what off the top).

When screwcutting metric threads on the Myford, it's convention to run the lathe motor backwards, after withdrawing the tool a bit, to return for a fresh cut.
If you don't give the tool clearance, by withdrawing it a bit, that's when you strip the previously cut thread pass, due to backlash.
Don't disengage the feed, or the tumbler.

Bill

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