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Member postings for Pete.

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

Thread: My (little) bit for the planet..
21/12/2022 22:14:47

The fact this gives you energy independence in a part of the world where things are less guaranteed is a big plus, if it helps the environment also that's a bonus, I think it's very impressive personally.

Thread: Milling machine spindle runout
21/12/2022 22:06:59

Matt, there have been a few threads on this subject recently, one was a 60 degrees V design for checking roundness, I think there was some info there that might help you check your spindle, there was this thread https://www.model-engineer.co.uk/forums/postings.asp?th=183984 where there was some discussion about your problem.

Gavlar, nothing serious I was just going to mention you should have an M16 hole in the first web between the bed way for putting a lifting hook if you need to lift it again.

Thread: Multi Metal Store
20/12/2022 22:31:23

I've found GWR to be a good supplier for fasteners etc, always decent prices and rapid despatch.

Thread: Milling machine spindle runout
20/12/2022 21:56:40

Gavlar, which model of X10 lathe did/do you own, do you still have it?

Thread: Privacy Glass in cars
14/12/2022 00:50:47
Posted by Keith Wyles on 13/12/2022 17:08:10:

Lorries will leave their back door or curtain sides open when parked up empty, to stop criminal damage to an empty lorry. Vans often need to security of extra door locks. If all a criminal can see is empty cars or blacked out cars doesn't it make it more likely that they might be broken into? Just curious if their is evidence either way?

I parked up near the city centre of Leicester last year and witnessed two men brazenly walking car to car putting their face to a car window with their hands cupped around their eyes to see better, they were walking car to car without a care in the world so I believe they do look for something to steal before smashing your window, not living in an area like that is probably a much better option than tinted windows.

14/12/2022 00:34:27

When I can't see through the vehicle in front, I do pull back a shade. Vans, lorries, caravans and buses make it advisable to drop back a bit; they all make it difficult to see trouble ahead - such as a car in front of them doing an emergency stop.

It's about time rather than distance. Human reaction time varies from about 100mS to 500mS or more. It gets slower with age, so beware pensioners who imagine they have the same reactions they had as a teenager; they don't. Interestingly, the fastest reaction times are achieved by boys in their early teens, and it's not maintained after age 20. After about 35, the deterioration becomes marked, and it's one of the fitness issues that finishes sporting careers.

Anyway, assuming the driver reacts within 333ms, and is in a line travelling at 30 metres per second (nearly 70mph), how much is notice is needed to stop safely?

333mS is 10 metres, so that's too close - the driver hits the brakes at the moment he ploughs into the wreck. In this time-frame the driver doesn't alter the outcome at all. His fate depends on how much energy is absorbed by the vehicle crumpling, how fast the airbag deploys, how effective the seat belt is in an extreme collision, and if the vehicle is struck by whatever is behind. Being seriously rear-ended is more likely if tinted windows prevent the driver behind reacting quickly.

666mS is 20 metres, which is still too close. Nothing happens for 10 metres and then the brakes go on. They have to stop the vehicle within 10metres, which is unlikely even if the tyres don't skid and the driver applies them optimally, and he doesn't have time to think.

A full second gives the vehicle 30 metres of stopping space, which is much better. Even so, the probability is the car will still be doing 20 or 30mph at impact. Although the driver might still end up in a meat sandwich due to being rear-ended, his chances of escaping serious injury are good.

Allowing two full seconds gives 60 metres of stopping space, which seems to prevent most accidents, especially as dead-stop emergencies are rare. We usually get more time to react.

I was taught to leave a 4 second gap between me and the vehicle in front. An over-cautious allowance when I was young, it makes more sense now my concentration isn't so good. Anyone else find driving at night unusually tiring? If so, allow a bigger gap. Same if distracted. Having a row with the wife, getting lost, dying for a pee, drunk, ill, tired, using a hone, or being unwell all play havoc with reaction times.

Statistically half of those reading this post are below average drivers. Anyone apart from me prepared to admit it? All my friends and colleagues consider themselves good drivers, including one who totted up enough points to be disqualified, and another who spent 3 months in hospital recovering from 'polytrauma' after a head-on crash due to him doing 80mph on the wrong side of the road.

Though I'd describe tinted windows as 'mostly harmless', I don't see much need for them apart from undertakers Private Ambulances. I suppose others might see them as a mildly anti-social selfish affectation, probably driven by a big-headed numpty proclaiming he's "special". Tinted glass wouldn't stop me buying a decent second-hand car though.

Dave

Edited By SillyOldDuffer on 13/12/2022 10:11:07

I'm indifferent on tinted windows, my car has them but only because the previous owner had it done, rear 3 windows on a hatchback done in a very dark tint and front light, it does hinder the ability to reverse at night time, I wouldn't bother doing it myself but it's already there so I just leave it, I must admit I do like the privacy in slow moving traffic but earlier today while driving I did think about what people had said and maybe there is a point to be said about seeing the car in front of the car fronts brake lights, but only in slow moving traffic.

When actually driving I tried looking through through the car in fronts windscreen driving at 40mph about 20 car lengths behind them which is what I deemed safe for that road at that time, and my vision isn't good enough to see anything of value from that distance through their window, the approach I generally use is as you say just gently put the brakes on to put a bit of distance between my car and the car in front, then continue at your previous speed.

14/12/2022 00:16:21
Posted by Michael Gilligan on 13/12/2022 09:10:08:

Posted by Pete. on 12/12/2022 23:07:13:

[…]

Edit, I was looking for a measurement of distance? As safety is clearly subjective given the driving behaviour I witness nearly every time I go anywhere in my car, clearly people have very different ideas about what is safe.

.

Long time ago, when I did the ROSPA advanced driving course, the easy answer to that was “Two Seconds

… There was even a ‘mantra’ at the time: Intended to drum it Into people:

”Only a fool breaks the two-second rule”

Do the sums, and you will see close correspondence with the multitude of “stopping distances”

… it still works for me [except, of course, when somebody dives into that massive gap]

MichaelG.

Most people seem incapable of leaving a safe distance in front of themselves, when they see someone driving a safe distance they assume you've left space for them to cut in, bring on semi autonomous vehicles that have sensors blocking drivers from cutting in where there isn't space or driving too close to the car in front.

12/12/2022 23:07:13
Posted by Nicholas Wheeler 1 on 11/12/2022 08:18:50:
Posted by Pete. on 11/12/2022 00:02:57:
Posted by Nicholas Wheeler 1 on 09/12/2022 09:11:17:
Posted by Pete. on 09/12/2022 00:28:22:

If you find yourself needing to view through the car in fronts windscreen to see the road, you should probably slow down a bit, put a bit of distance between your car and the car in front and use your own windscreen to view the road.

You don't do it to see the road.

You do it to see what is happening in or near the road, so you're ready for the car in front slowing down, turning off, pulling out, swerving out of the way of a pothole or any of the other things that can seriously ruin your day.

Most things that surprise drivers are visible if they're paying enough attention and looking far enough ahead!

How far behind the car in front are you? country road, twists and turns 45~50mph safe travelling speed, how far behind the car in front would you be?

Far enough that I can see in front of it. That can also be done by moving the position of the car in your lane. And yes, it often requires adjusting to a slower speed than I would use if the road were clear. It takes practice and patience which is the bit that rules out lots of drivers road users achieving this. As I think this thread shows...

It's perfectly possible to drive through the rush hour traffic on the M25 without touching the brakes by looking at all the traffic.

So if you can see sufficiently, what difference does tinted rear windows make?

 

Edit, I was looking for a measurement of distance? As safety is clearly subjective given the driving behaviour I witness nearly every time I go anywhere in my car, clearly people have very different ideas about what is safe. 

Edited By Pete. on 12/12/2022 23:12:26

Thread: Up grade milling machine
11/12/2022 00:14:55

Rigid is not an attribute that comes to the top of my mind when describing the SX3.5.

Posted by jaCK Hobson on 10/12/2022 15:33:26:

10mm R8 collet not tight enough - probably only hand tight after I got distracted while looking for spanner thing. Try doing yours up hand-tight and see what happens in a large chunk of cast iron at high feedrate. Mine started out as .5mm finishing cut but was more like 5 mm when i hit the stop button.

I don't think Bill was taking your comment in a strange direction, he was just reading what you wrote.

Thread: Privacy Glass in cars
11/12/2022 00:02:57
Posted by Nicholas Wheeler 1 on 09/12/2022 09:11:17:
Posted by Pete. on 09/12/2022 00:28:22:

If you find yourself needing to view through the car in fronts windscreen to see the road, you should probably slow down a bit, put a bit of distance between your car and the car in front and use your own windscreen to view the road.

You don't do it to see the road.

You do it to see what is happening in or near the road, so you're ready for the car in front slowing down, turning off, pulling out, swerving out of the way of a pothole or any of the other things that can seriously ruin your day.

Most things that surprise drivers are visible if they're paying enough attention and looking far enough ahead!

How far behind the car in front are you? country road, twists and turns 45~50mph safe travelling speed, how far behind the car in front would you be?

09/12/2022 00:28:22

If you find yourself needing to view through the car in fronts windscreen to see the road, you should probably slow down a bit, put a bit of distance between your car and the car in front and use your own windscreen to view the road.

Thread: How long should I keep my recently vapour blasted steel engine components before getting a primer coat down
06/12/2022 19:11:47

Why is it late in the year to paint something? I've just been in my unheated garage to check the Union T&C Grinder cabinet I sprayed Sunday afternoon and it's as expected, just fine, I'm genuinely confused why you shouldn't paint at this time of the year?

img_20221206_185341.jpg

Thread: What is it?
19/11/2022 22:06:12
Posted by Craig Brown on 19/11/2022 06:45:35:

I seem to remember the KW of the motors being less than I was expecting for their physical size, maybe only 0.5KW (0.75ish HP), but I will check and get back to you.

I too was impressed by its mass for its size, they are an odd height though, when I commission mine I will be raising it slightly on a stand.

I can take some photos and dimentions of the horizontal support if you like, wouldn't be much work to make one.

Thanks that'd be good, if I can can find a horizontal arbor I'd like to have that capability, so I probably will make a support, photos dimensions would be helpful.

Yes the height of the machine is odd, or should I say the height of base, quick assessment gave me a 400mm sub base height to get the table to my hip, I'm an average 5' 11" so if you're tall you might need to increase that a bit.

19/11/2022 21:33:58

I did also find this, it lives on with a few changes.

img_20221119_211042.jpg

img_20221119_211349.jpg

19/11/2022 21:31:49
Posted by Pete Rimmer on 19/11/2022 09:44:57:

I'd say that was about as perfect a small workshop machine that it's possible to get for reasonable money. I would have bought it in a heartbeat.

I thought thought it was pretty good too, and the fact it has int30 on both spindles sealed the deal, I can swap tooling between my VM30.

19/11/2022 21:27:04

Thanks for that, it's definitely less than you'd think, my motor is three phase and having no tag on it I opened it up check if it's dual voltage, it's not so I took it off to weigh it and it's 13.2kg which is about what I'd expect from a 1hp 0.75kw which is what I'll likely replace it with.

It also has an odd tapered shaft on the motor.

img_20221119_210146.jpg

img_20221119_210512.jpg

18/11/2022 19:20:48

Mystery solved, thanks Craig, I had a look at your photo album, I remember seeing yours for sale but my brain remembered it as a slightly different machine, but no it is the same and yes I did purchase this it just got delivered today.

It was local so I was able to go and have a look at it before the auction ended, I thought it was a pretty solid little machine so put a bid in.

I see you have the horizontal support section and Arbor, which mine does not have which is a shame but it wasn't silly money so can't complain.

Could I ask what power your motor is on the vertical spindle, the rating plate has been removed on my, I'm guessing 1hp?

18/11/2022 15:39:50

I had a Pinnacle 9x20 Taiwan lathe made in 1988, it was actually very well finished, it had hardened bed ways with nice grinding, hand scraped cross slide ways, the only thing that let it down was the gear train, it was a metal plate attached to the back of the headstock with all the gears on, it seemed like an afterthought and everything meshed quite poorly, I'm not sure if all 9x20 versions are like this?

It was supplied by a company called Excel machine tools which are in the midlands.

I've scraped some paint off and there is Warco green underneath, so it's possible they could have imported it

18/11/2022 14:52:47

Anyone know what this little mill is? It was listed as a "Baby Bridgeport" as the seller didn't know either, the hammerite monster removed the nameplates during the attack, I've added a photo with a 300mm/12" combination square to give some scale it's not huge in size, but seems pretty well made with tapered gibs on both table axis and pretty heavy castings.

But at a loss to what it is I'm guessing 80's or early 90's Taiwan import? Anyone have any idea?

img_20221118_142146.jpg

img_20221118_135925.jpg

img_20221118_135935.jpg

Thread: bandsaw / jigsaw
16/11/2022 23:03:18

I own a Femi but it wouldn't be my first choice for sheet metal work, I've just been making a shelf for inside a tool cabinet, using an 18v Makita shear it took me about 40 seconds to cut a 500mm x 700mm shelf out of 1mm sheet steel.img_20221116_205246.jpg

Makita shear 2

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