Member postings for Martin W

Iain

You say that the stepper motor rotates but it judders when turned by hand. All/most stepper motors won't spin freely and have a cogging effect that can be felt when turning the shaft by hand and no power applied. This is due to the permanent magnet poles passing and being attracted to the winding/stator poles. While each step is small the effect of breaking the attraction of the poles can feel like running your finger on a smooth wet surface where it grabs randomly and you have to apply more force to move and you get a slip stick or a juddering motion.

I think the best way to test the motors, if you can, is to power them up and drive them slowly to see if they run smoothly without any problems. Hope this helps, not particularly clear I realise, and I hope that I am not teaching my gran how to suck eggs. Really depends on the level of judder but this will be affected by the size of motor.

Martin

Neil

Have just done the same as Mike and creating and Renaming a New Folder was virtually instantaneous. That said I don't have a very complicated file structure which may make a difference.

Martin

Edited By Martin W on 10/11/2016 11:35:04

As they say 'A picture is worth a thousand words' and there's enough in Neil's post to cover a lot of awkward challenges.

It would be well worth while looking at the clack/check valves ,You've only got to look at the trouble Ron Hancock had with clack/check valves leaking on his Black 5 these were all 'NEW Commercial items and they all leaked. It was only after a great deal of help from a member of this forum he eventually managed to overcome the problems and is now happily steaming. Good luck and I hope you solve the problem quickly.

Dianne

There is a design for a small steam engine here. It uses a spool type valve gear the design of which may be suitable for your application, the reverse motion is achieved by reversing the steam flow rather than changing the phase of the valve gear which keeps things simple.

Hope this is useful

Martin W

Tony

Some of the problems have been highlighted above but it can go much further that as Michael Horner indicates.

Just to expand the scenario a bit;

Name and phone number not really a problem, but then we can expand the information a bit. Land line phone number gives us the area code and the posting gives areas of interest with specific equipment mentioned. With a little bit deeper digging it is almost a certainty that one can find all the Joe Bloggs in that area. Couple that to his phone number and there is a fair chance you have the address. Go to street maps and usually you can walk up to almost the front door, take a good view of the front of the premises and what there is in the area of interest. Switch to satellite view and any sheds etc, size of garden, any pathways to the rear of the property or possible routes in/out can be assessed.

Now we have a total picture of where that person lives and at least one of his interests; trawl through other sites and it could well reveal other interests and whether he has any other assets i.e. model steam locos etc. A little more digging and you see whether he is likely to be retired or not and who else plus their ages are likely to be resident at that address.

All this can be done anonymously from your desk chair while drinking a cup of tea plus a small outlay to the odd website for data. Using this information and a false utilities bill or bank statement and it may be possible to make various financial agreements for which poor Joe Bloggs will be responsible.

All this from a name and a telephone number posted on a website.

It may a bit melodramatic but it gives you an idea of how a couple of scraps of what appears to be innocuous information could lead to. There have been posts on this site about locos being stolen from people's workshops and it is indeed feasible that the thieves used information gleaned from engineering/hobby sites to identify their target.

Hope this helps to explain why I made the comment about using the PM on this site

Martin W

PS

No I am not paranoid but I like to keep some of my personal details to myself though it is getting more difficult.

Edited By Martin W on 02/10/2016 16:48:22

Rob

I would suggest that in future if you want to give personal details to another member of the forum then you contact them through the 'Message Member' personal messaging system, see the bar at the bottom of each post. This way you don't disclose any personal information to whomever might be browsing this forum whether they are members or not.

Cheers

Martin W

Thanks Ketan I couldn't remember which company it was.

Martin W

I ordered some bits from CPC at about 1330 yesterday, they were delivered at 1101 this morning and were easy to track on the UPS site. That's what I call service especially as it was standard delivery at no charge. The best was from a company, I can't remember the name, who when you logged onto the tracking site actually showed where the delivery van was and gave an estimated delivery time.

Just tried it and it loaded fine after a short delay.

Excellent result Ron, I have followed your trials and tribulations through this build. Well done and I hope she performs even better when you fit the clack valves Julian has sorted out. Many happy hours of steaming.

Martin

Hi

There's a description of direct drive washing machine motors here. As can be seen from the pictures the motor case rotates and it is quite large. Not something I would try to drive a lathe with anyhow.

Martin

Edited By Martin W on 20/09/2016 19:05:12

Personally I would have used some side cutters and a pair of long nosed pliers to remove the birds nest. Just a thought as I believe it would be a lot safer.

Martin

Neil

Clogs drilling 100's of holes Gordon fixing satellite dish

Martin

Ian

Couldn't agree more with your comments though lugging a good sized drill up and down a step ladder doesn't sound attractive. The other problem that unless he is secured safely then if the drill bit jams, with that extra torque, remaining on the ladder could be somewhat challenging.

It would be best to work off a stable platform with, as you suggest, a more powerful and controllable drill and not risk an involuntary collision with terra firma .

Martin

Timothy

I agree with you that some types of print will suffer from colour fading but Canon suggest that their ChromaLife 100+ inks on their paper will last 100 years!! However when you read the small print there seem to be fairly demanding conditions required to achieve this. Having turned 70 I don't think I'm in a position to challenge them .

Martin

Unless I have missed it something that hasn't been raised is matching your monitor to your print source. If this is not correct then trying to colour balance your images is rather pointless. Another problem is that if you are printing at home then depending on the paper you are using often has an impact on the colour balance. This can happen using the same type of paper i.e. Photo Glossy produced by different manufacturers and is common to most inkjet printers even 5 ink units.

I suspect that dye sublimation don't suffer from this but don't have any experience to back this up.

Martin

Mick

Are all your drivers up to date ? If not then there can be problems running things like printers and some programs. There are several 'Driver Updating Packages' out there for free though you will need to be careful when installing as some may contain unwanted software additions etc.

Martin

And I thought it was there to dunk the bits in when they got too hot when being sharpened, though it might double up as a new and novel de-rusting solution .

Martin

Edited By Martin W on 10/06/2016 10:59:12

Shame the crushed orange soft drinks can wasn't removed before the photograph was taken, rather spoils the set up.

Martin