What Did You Do Today 2019

[Nigel Graham 2Participant @nigelgraham2]

B++++y wink symbols! Does this site really need these gimmicky emoticons or whatever they're called these days?

I was sure I'd placed a space between the word " pre-loved " and the " mark!

[Nick Clarke 3Participant @nickclarke3]

Nigel –

It was a duplicate post that I forgot to mark as such, but looking back it was in fact remarkably accurate!!

Will try to do better today.

Nick

Edited By Nick Clarke 3 on 25/07/2019 13:22:44

[Neil WyattModerator @neilwyatt]

Sweat… 33.6 in my office.

Afraid I had three small choc ices plus a home-made banana and coffee milkshake for lunch.

And what an anti climax – looks it's only the second hottest day on record.

Neil

[JasonBModerator @jasonb]

That sounds quite comfy Neil, spare a thought for those of us who have been working on a roof all week.

luckily I did not get blown off when the Air ambulance decide to land in the garden next door yesterday.

[John HinkleyParticipant @johnhinkley26699]

Yep. Far too hot to work in the garage today, so I've spent a while working on the internals of a 5-speed transaxle gearbox – my next project. So far, I've just about finalised the general layout and drawn up the mainshaft gear clusters assembly in Alibre Atom. For scale, the far right gear pair ( 1st and reverse ) are both 63mm diameter and the ( dummy ) shaft is 150mm long

Next step – the input shaft and associated gears and then the revese gear idler set-up.

Right now, I'm going to let my brain cool down.

John

[Neil WyattModerator @neilwyatt]

Posted by JasonB on 25/07/2019 15:42:52:

luckily I did not get blown off when the Air ambulance decide to land in the garden next door yesterday.

The lengths they will go to to drum up business!

N.

[Mick B1Participant @mickb1]

Bloke from Carriage and Wagon dept. asked about router collets cos one of his had broken up. Couldn't find anything quite the same on the web (.250" bore x 16.75 mm OAL), so made him this outa silver steel:-

Didn't harden it because the previous had broken up where the petals join the base ring, and I thought silver steel's probably tough enough as bought and it'd be silly to risk embrittlement.

Rookie error in 3 o'clock slot where I did my mental arithmetic wrong in getting the slitting saw on centre – spotted and corrected it before any real harm done. Seems to work, but will await user comment.

[duncan webster 1Participant @duncanwebster1]

Went to York railway museum, very enjoyable visit and pleasant ride on the train apart from the last leg Manchester/Warrington, there wasn't even standing room. Good bit is that if we had have had a crash we couldn't have fallen over. When they must know it is going to be packed in rush hour why not use more than 2 coaches. Oh I forgot, this is the North West, all the money is being spent on Cross Rail. To quote Manchester Evening News

'

Transport spending per head in London is still DOUBLE the figure for the north, a think tank has claimed.

Not only that, but since the launch of the 'Northern Powerhouse' five years ago, per-person spending in the capital has risen twice as much as in the north

[Boiler BriParticipant @boilerbri]

Nice one Duncan. Good day out at York.

We just driven to Criccieth. Brought some RC modelling stuff with me to fit to my Roundhouse loco.

Looks like a good weekend ahead.

B

[BazyleParticipant @bazyle]

Posted by Neil Wyatt on 25/07/2019 18:17:08:

Posted by JasonB on 25/07/2019 15:42:52:

luckily I did not get blown off when the Air ambulance decide to land in the garden next door yesterday.

The lengths they will go to to drum up business!

N.

I sense a conspiracy. A few years ago when one landed near me (on common land as no gardens that big round me) I was up my chimney at the time. The year before they had the bright idea of landing on the cricket ground but had to lift the stretcher over the gate 'cos it was locked. It was on the ground about 20 minutes so plenty of time to get down and find a camera.

[JC54Participant @jc54]

Our air ambulance people must be more resourceful, when her that must be obeyed was air lifted after a very serious RTA they just took a fence down and fire brigade rebuilt it. God Bless the Air Ambulance people. You never know you may need them next… John

[Martin King 2Participant @martinking2]

Hi all,

Had the Dorset Air Ambulance land in our field a couple of years ago and it is now a designated landing site for them if needed.

https://www.dropbox.com/s/b5rpya2400sme6d/GOPR0274.avi?dl=0

https://www.dropbox.com/s/l0l59k8cwozb9en/GOPR0307.avi?dl=0

They do such great work and need all the support they can get!

Cheers, Martin

[John HaineParticipant @johnhaine32865]

Finally got the modified dial of my synchronome "reinvention" mounted to the backboard.

This photo caught the moment where the stepper that controls the gravity arm has just placed it on the pallet (every 40 pendulum cycles). Lots of tidying to be done and a case to make, not to mention regulating the timekeeping.

[duncan webster 1Participant @duncanwebster1]

John, does the stepper have some kind of cam to lift/drop the gravity arm? I trust this is going to be written up for ME, it's about time we had something different

[John HaineParticipant @johnhaine32865]

Duncan, indeed it does. There's an opto looking at the cam to allow the arduino to set it to its home position on power up or reset. Also of course an opto sensing the pendulum, which is offset to one side of centre so the software can work out which way the pendulum is swinging.

[Russell EberhardtParticipant @russelleberhardt48058]

Interesting project John. I look forward to more details. May I suggest a weight tray halfway up the pendulum rod to make regulating easier?

Russell

[John HaineParticipant @johnhaine32865]

Russell, indeed, that's one of the features to be added in the next round of updates. There are 3 ways to regulate the clock. Coarse – periodically adds or subtracts 2 second increments to the displayed time. Medium – via a weight tray. Fine – trimming the amplitude by changing the impulsing interval (currently 80 seconds), though I have other plans for amplitude. None of these require a rating nut adjustment.

At some point I also need to make a PCB to replace the frightful electronics breadboard!

[IanTParticipant @iant]

No real excuse to not get on with some gardening yesterday but snuck off to the Shed later on when someone wasn't looking …

I've had a bearing (in a blind hole) that I need to replace lying around on the bench & annoying me, so (having carefully researched on YT) I decided to try the 'grease & rag' hydraulic method. I even turned up a close fitting punch to try to improve the seal. I'm afraid all I managed to do was to completely compact the rag in the bearing and the bearing hasn't moved a micron as far as I can tell. Later today I'm going to try bread instead of cloth (having re-read the comments under the YT posting).

Not entirely wasted time however. A grateful son gifted me a Hemmingway 'Keats' kit recently – and as this is ideal shaper work, I also had the trusty Acorntools 7" roughing out the castings. Not a quick process (and more to do) but one where you can be doing other things in parallel (such as getting bearings out) – so in a strange way – shaper work can be very time efficient…

As an aside, I already had a 'Chinese' Keats I purchased some time ago and had only used once – but needing it for something a bit more challenging recently – found that it was very badly made – with clamping bolts drilled at quite an odd angle and the clamping piece with completely unequal side pieces. So that was a bit disappointing – but even so it would have been very hard to set-up the required operation with it – hence the new H/W kit… which is very well presented and an interesting project too (well done Son!)

I guess I will eventually tidy up the commercial Keats but it's an annoyance none the less…

Regards,

IanT

[donkeyParticipant @donkey]

Ian T

try plasticene instead of grease or playdough.

always worked for me when I was a machine tool fitter for good old British Leyland.

Brian

[IanTParticipant @iant]

That's a thought Brian. Thanks.

Grandma says we have certainly have Playdough but I'm not sure if we still have plasticine – I'll have to have a discrete rummage in the Grandchildrens' toy-boxes…

IanT

Edited By IanT on 28/07/2019 12:00:57

[Ian S CParticipant @iansc]

Don;t know about the rag (unless it's to cover the area in case the grease squerts out). The punch/rod needs to be a fairlt close sliding fit in the bearing, then a good solid thump, it may need more than one whack, and maybe a little more grease.

Ian S C

[martin perman 1Participant @martinperman1]

Posted by IanT on 28/07/2019 10:20:08:

No real excuse to not get on with some gardening yesterday but snuck off to the Shed later on when someone wasn't looking …

I've had a bearing (in a blind hole) that I need to replace lying around on the bench & annoying me, so (having carefully researched on YT) I decided to try the 'grease & rag' hydraulic method. I even turned up a close fitting punch to try to improve the seal. I'm afraid all I managed to do was to completely compact the rag in the bearing and the bearing hasn't moved a micron as far as I can tell. Later today I'm going to try bread instead of cloth (having re-read the comments under the YT posting).

Not entirely wasted time however. A grateful son gifted me a Hemmingway 'Keats' kit recently – and as this is ideal shaper work, I also had the trusty Acorntools 7" roughing out the castings. Not a quick process (and more to do) but one where you can be doing other things in parallel (such as getting bearings out) – so in a strange way – shaper work can be very time efficient…

As an aside, I already had a 'Chinese' Keats I purchased some time ago and had only used once – but needing it for something a bit more challenging recently – found that it was very badly made – with clamping bolts drilled at quite an odd angle and the clamping piece with completely unequal side pieces. So that was a bit disappointing – but even so it would have been very hard to set-up the required operation with it – hence the new H/W kit… which is very well presented and an interesting project too (well done Son!)

I guess I will eventually tidy up the commercial Keats but it's an annoyance none the less…

Regards,

IanT

Ian,

Somewhere in the blackhole I call my workshop/garage I have a tool for removing blind bearings, it involves removing the ball retaining ring and passing two pullers through and turning them to hook on the inner or outer race and using a puller to lift the bearing out.

martin P

[IanTParticipant @iant]

I've previously tried turning an eccentric lip on a high tensile bolt Martin, then inserting and wedging it in place but that didn't budge it. I haven't actually tried heating it first, so that may be worth a go after I've cleaned it up a bit – then I'll have another run at the hydraulic method… We'll see..

IanT

[Martin CargillParticipant @martincargill50290]

I have both internal pullers and insert pullers that need you to break the bearing cage to insert a small flat sided ball into the space where a ball should be. However I have also managed to remove blind bearings by using an expanding masonry fixing bolt to grip the inner of the bearing and then improvising a slide hammer to shock the bearing into releasing. What is the bearing in?

Martin

[IanTParticipant @iant]

Well we didn't have any plasticine, so I went for the bread option but made a mash of it with the grease. A few packings and hammerings later and I had succeeded in blowing the metal shield out of the bearing top and thereafter further applications of bread/paste just pumped out between the bearing balls. I also heated the unit up before trying this in the hope of easing things btw.

So the lesson learned is that hydraulic pressure is very effective but not always in quite the way you need!

The shaper work went well again – so it was not a total loss of effort and I can always replicate the part (a tailstock live centre) if I need to as fortunately it is not that complicated to remake.

IanT

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