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Member postings for Adrian R2

Here is a list of all the postings Adrian R2 has made in our forums. Click on a thread name to jump to the thread.

Thread: Bleeding hydraulics
08/10/2020 08:58:12

Second the extend/retract a few times advice. I'll add that the working pressures in a tractor hydraulic system are huge (e.g. 2500psi), and any attempt to bleed them would be potentially hazardous. Resist the temptation to loosen any fittings when the engine is running or if there is any residual load on the system. When I park a machine up I try to work all the levers after switch off to depressurise it.

Thread: Mc Donald Model tractor
06/10/2020 13:34:04

Ah, I see now. I'd assume differential between the axles but clearly not. Coming on well, keep at it.

06/10/2020 11:12:53

I'm trying to imagine the gear setup here - presumably the two black marked bosses at the front are cross shafts for the actual gear change, then the blue one is an idler and the differential goes under one of the humps? If so what's the second, a transmission brake perhaps?

Thread: Suitable motor for universal pillar tool?
05/10/2020 14:37:23

I converted my ancient lathe to 3 phase with an inverter drive a few years back. Didn't get as far as rigging up the pendant but it has made the machine much nicer to operate, only minor quibble being a bit of static hiss on the radio which I haven't managed to suppress.

On the DC side when my kids were smaller and I converted a Sonic 7 (think half scale Lotus 7) from petrol to electric using the drivetrain from an off road mobility scooter - bonus there was that the drive controller incorporates lots of safety features e.g. handles full forward to full reverse gracefully.

So either could work for the UPT if a motor is available in suitable size. I realised I made a typo above, the GHT book says 1/12th hp motor so in metric we are only talking 75W or thereabouts. I would only anticipate using this device for small drills, say up to 5mm so controllability will be more important than oomph.

05/10/2020 10:31:23

Indeed. I made the missing pulleys and mounting block over the weekend and tried the Bodine motor. Not a very good test as I was using a piece of string as a drive belt (proper one in post) but it starts with quite a jerk so DC may be the way to go to get variable speed and soft start if no other reason.

01/10/2020 08:46:50

Thanks folks. I've got a Bodine motor which I will try, but I will need to remake the jockey wheels first as the set that came with it (on a separate freestanding post) are too big to - more like the ones on this similar tool http://www.myford-lathes.com/misc2.html - and don't align properly with the spindle.

30/09/2020 12:39:25

It's just turned up in the post - flicking to the appropriate page he recommends a Parvalux SD28, 1/2th hp at 1400rpm, so yes the sewing machine one will be much too fast.

30/09/2020 11:45:04

I bought what I now know is a Geo Thomas Universal Pillar Tool at the weekend. I admit I didn't know that was what it was at the time but it looked interesting and the seller was a friendly chap so deal was done.

It came with the sensitive drilling head but no accessories, so I have ordered a copy of his book and can have the fun of finding or making those, but getting to the point there was no motor either so what should I be looking for to suit the device? My first thought was a sewing machine motor, description of which says 180W and up to 10,000rpm - would that be good or perhaps a bit too fast and whirry?

Thanks in advance.

Thread: P.S.Waverley
17/09/2020 09:18:31

How long do you want it to run for? Could you power a steam engine from a refillable Co2 bottle as used on small welders or soda streams? Or use an electric compressor to fill an air tank?

(Tin hat on, I have no idea what the consumption of a suitable engine would be and haven't done the sums...)

Thread: Mc Donald Model tractor
08/09/2020 09:26:33

Very neat.

A probably daft question on the castings with holes - have you ever tried patching small defects? Perhaps prepare the edges of the missing bits under a flux of some sort and then pour in some new molten metal? From what I can see you have formed all the important bits so just a question of stopping the oil falling out.

20/08/2020 08:45:27

Thanks for that. I bet it gets quite warm in your workshop with it running My teenage son got interested in casting last year so we built a furnace from an old propane cylinder and reclaimed a burner from a space heater as my blowtorch wouldn't generate enough heat. We've done a few things since but haven't really got the hang of making the sand moulds yet hence the curiosity as to what others are using. I've been following your compatriot "Olfoundryman" on youtube for tips to try and improve.

Keep us updated with the build,

Adrian

Thread: Pinnacle bench drill chuck key
18/08/2020 15:17:25

Well done, you must have a good steady hand, things I try like that rarely end up circular. Glad it worked out anyway.

Adrian

18/08/2020 11:54:46

Do you have a bench grinder with a good rest? If so rig up a stop block and grind the end of the key rotating it against the stop block, should get it close enough.

You need to take 0.75mm off each side so clamp the stop block with a shim of that thickness and the key against the wheel, then remove the shim and commence grinding.

Thread: Mc Donald Model tractor
17/08/2020 11:09:05

Hi Fred,

Interesting old tractor, I bet that has a nice chug to it when running. I'd be interested in some photos of your casting setup if convenient.

Adrian

Thread: Are these Flexispeed accessories?
13/08/2020 10:28:21

I've got the compound/topslide, however no holes in it that will line up with the either the angle bracket or vice.

Adrian

Edited By Adrian R2 on 13/08/2020 10:56:42

13/08/2020 09:01:23

Thanks, it's useful at least to know that these are intended for use with the lathe. I've found a picture now that also shows the lathe with the angle bracket and a fully machined vice as you describe. It also had a proper vertical slide but looks like that was an option. I hadn't thought of trying to remount the cross slide, will have to look at that again.

Likewise I haven't use this for anything for a while but would still like to know what I've got.

Adrian

12/08/2020 10:19:18

Thanks for the reply Neil - do (A) and (C) give some vertical slide capability? If so where do you mount them?

(B) pivot for a hand held tool, interesting idea, I wonder what the tool holder would have looked like. Re-examining the bits again last night I noticed that the small hole has a spring inside it - some sort of pin or ball detent?

Adrian

11/08/2020 11:38:57

Can anyone tell me if the items below are accessories for this Flexispeed, or if they have just been put in the same box because they are painted a similar hammered blue.

A is an angle bracket, but doesn't seem to fit anywhere on the lathe.

B might be a riser, it is the same width as saddle; doesn't appear to fit tailstock.

Bolt holes on vice C are on same centres as A but different diameters.

Thanks in advance for any help.

(p.s. I do have the lathe cross slide but it was removed in this photo)

img_3265.jpg

img_3266.jpg

Thread: Melting bronze
03/08/2020 09:32:38

I melted some scrap copper once and poured it into a "non-stick" thin steel yorkshire pudding tray. This approach had worked fine for aluminium but the copper stuck so well that I ended up cutting the tray into segments and then grinding the steel remants off. Not recommended!

Thread: Is Iron / Steel endlessly recyclable ?
15/07/2020 16:03:52
Posted by William Chitham on 15/07/2020 15:24:29:

Does it matter if you mix up ferrous and aluminium?

Not if you are just dumping it in a "metal" skip. If you intend to sell it you will get more money for separates.

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