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Member postings for Ron Laden

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

Thread: Reducing Volts and Amps
11/08/2018 09:07:21

Morning guys,

I am looking at a new project at the moment and I have a couple of questions.

If I have a 24 volt supply (2 x 12V - 75 amp batteries in series) and a non adjustable 100 amp motor controller is it possible to reduce the output voltage and amps from the controller.

Ideally I would want the voltage to be 18 volts and have the amps adjustable or if its simpler set to a maximum of 60 amps.

Also am I correct in thinking that if I have 4 motors wired in parallel from the controller they share the current, so at 60 amps each motor would see 15 amps..?

Many thanks

Ron

p.s. I forgot to say that the motors are rated at 12 to 24 volts and having spoken to the manufacturer a lot of people run them at 24 volts but you have to reduce the available current to under 20 amps so I am thinking 15 amps to be safe. I know if you double the voltage to a motor the speed doubles, the motors are rated at 2400 rpm so 4800 on 24 volt. If I go with 18 volts I am assuming the rpm would increase by 50% to 3600 or isnt it that simple.

Edited By Ron Laden on 11/08/2018 09:14:13

Edited By Ron Laden on 11/08/2018 09:32:29

Thread: 5 inch 0-4-0 Shunter
10/08/2018 16:54:39

I am about to start building the loco body and as mentioned I am going with a Class 08..ish style body. The 08 is of course a 0-6-0 loco but there was a prototype built as a 0-4-0....wink....well thats my story and I,m sticking to it.

I was going with a typical green BR body but I found a few other colours for the 08 and I rather like the grey version in the picture below it is a bit different. I may well go for it when it comes to the painting and finishing stage.

08 grey body.jpg

Edited By Ron Laden on 10/08/2018 16:55:07

Thread: Stuart D10 very early model.... nuts and bolts
09/08/2018 11:21:21

Hi John,

I wonder if Poly Models (Bruce Engineering} could tell you.

Tel: 0115 9736700.

Ron

Thread: Spares for cheap Bandsaw
07/08/2018 15:19:20

Well at the risk of seeming more stupid than I am, I will own up and say I found the make and model number of the saw. In my defence, when I carried the saw from the shed to the bench the label was facing away from me and as soon as I put the saw on the bench I opened the hinged cover, again away from me. This morning I closed the cover and there was the make and model number label as clear as day.

Anyway, surprise, surprise I have found the tyres and a new toothed drive belt on line from Solent Tools. The make is NuTool and model number HBS9-4, as soon as I googled the make and model quite a few links came up.

I still have the rubber sheet on the way but I can hold on to that for future use should I need it.

So happy I have found the correct tyres and a new drive belt but feeling a bit of an idiot for not looking for the makers label which was in an obvious place.

Thanks for all your help though guys, much appreciated.

Ron

07/08/2018 11:25:41
Posted by Muzzer on 06/08/2018 22:58:52:

Funny - the generic 4x6 Chinesium bandsaw doesn't use these tires / tyres - the blade runs directly on the cast iron drive wheel. Yours may well work without needing a replacement if you remove the perished remnants. Just a thought....

Murray

Hi Murray, my machine is fitted with alu wheels and as you can see ran on tyres.

Ron

Thread: Are you a Man or a Mouse When Milling?
07/08/2018 11:20:55

Thanks Andrew for the explanation.

You will probably have gathered that when I start out with a mini mill I will be in the mouse camp..lol

Ron

Thread: Spares for cheap Bandsaw
07/08/2018 10:26:17

Thanks Rex,

I have just spoken to Axminster but they cant help, they have a belt which is the right size but it is a "T" shaped belt and mine are flat.

So I have just ordered some solid neoprene rubber strip from ebay and will give it a go at making my own. The strip I have ordered is reinforced with cotton and sounds quite hard wearing so hopefully it will do the job.

Ron

Thread: Are you a Man or a Mouse When Milling?
07/08/2018 10:12:25

Now I dont know the first thing about mills or milling but I will be buying a mini mill in the future. I am quite prepared to be shot down in flames but is it right that a cutting tool is glowing red hot, my feeling is thats it not but what do I know..?

I can appreciate the need to want to remove as much material as possible and speed up the job but at what point do you decide that the DOC and WOC and feed is just too much. Andrew you say "so what" to "the smaller machines aren,t that rigid" but surely pushing a machine that hard cant be doing it any good in the long term.

As I mentioned I,m quite prepared to be corrected.

Thread: Spares for cheap Bandsaw
06/08/2018 21:58:32

Thanks Michael, I think making my own tyres is probably the way to go

Ron

Thread: mystery tool
06/08/2018 20:34:47
Posted by V8Eng on 05/08/2018 00:20:39:

It’s very late for brain work but I will hazard a guess at it being a medical trepanning tool (for making holes in a skull).

 

If you have seen the film Master and Commander, remember the scene with the ships surgeon using one of these tools to cut a disc out of an injured deck hands skull. The shipwright was sitting close by and filing a silver coin to fit and plug the hole....a good film worth watching if you havnt seen it.

Edited By Ron Laden on 06/08/2018 20:47:58

Thread: Spares for cheap Bandsaw
06/08/2018 20:22:36

Thanks Bill

Well that sounds like a good way of doing it, which obviously works.

No I am a fair way from Buxton, based in North Devon.

Ron

06/08/2018 20:07:31

Thanks guys, I have found a few leads that may help, will have a phone around tomorrow.

It seems that the tyres are made of Urethane and from what I,ve seen so far they are not cheap, depending on size, £50 or more for a pair of tyres....?

Will see what tomorrow brings but I may be buying some rubber strip and making my own.

The tyres I am looking for are 233 mm dia x 12 mm wide x 2,5mm thick.

cheers

Ron

 

Edited By Ron Laden on 06/08/2018 20:08:29

Edited By Ron Laden on 06/08/2018 20:08:48

06/08/2018 14:58:35

Hi guys,

A picture below of whats left of the drive wheel tyres on my cheapie brand bandsaw. I dug it out of the shed this morning in whats probably 10 years since it saw the light of day. The saw is in very good condition considering the time its been hidden away but as you can see the wheel tyres have dried up and completely perished.

I have no idea of the make of the saw but it is probably Chinese or Indian. I know there are suppliers where you can get various sizes of blade but wondered if anyone knows if its possible to get hold of other spares and if so from where..?

Thanks

Ron

dsc06036_edited-1.jpg

Edited By Ron Laden on 06/08/2018 14:59:06

Edited By Ron Laden on 06/08/2018 15:00:04

Thread: 5 inch 0-4-0 Shunter
05/08/2018 16:31:07

Hi Jeff,

Why didnt I think of that..? Thats a great idea, a body for the girls and one for me when I want to be a bit more serious about it.

Thanks Jeff

Ron

Thread: What Is The Most Beautiful 'Thing' In The World?
05/08/2018 13:09:57

Difficult to answer, I dont know about the "most beautiful" but something that completely took my breath away was Michelangelo,s sculpture of David.

I was working in Florence a few years back and I went to see it and just couldnt believe what I was seeing. It is 17 feet tall and the detail is beyond belief and to consider this was carved from the solid with hammers and chisels over 500 years ago. I stood looking at it and my mind wouldnt stop thinking how could a man do this..?

I know Michelangelo was considered a true genius and when you stand in front of the sculpture of David there is no doubting that to be true.

Thread: 5 inch 0-4-0 Shunter
05/08/2018 10:44:46

Thanks guys,

I was going with British Rail Green with more black and yellow chevrons on the front and at the rear of the cab.

Pink...? I just cant get my head around that at the moment, I,m hoping it will be forgotten and go away but knowing the great grand daughters it probably wont.

Ron

05/08/2018 09:24:49

Chassis top plate (3mm steel) added as well as the front and rear plates again in 3mm steel. Need to turn up some buffers and add a front and rear clevis type coupling as well as a bit of detail for the plates and chassis side frames.

It will then be the body to build, I,ve decided on 6mm MDF for the main body parts and yes it will be sealed, primed and painted so quite weather proof. The beauty of MDF is the sheets are generally very flat and the surface finish is very good so its not too difficult to produce a good finish.

I have decided to go with a class 08 shunter type body though as I mentioned before this is obviously not a scale loco but a look alike. Our two great grand daughters for whom I am building the loco keep mentioning a Thomas the Tank face on the front and one of them even suggested the loco should be pink...surprise

Regards

Ron

dsc06032_edited-1.jpg

Thread: Digital Calipers
03/08/2018 08:56:05

I have a Mitutoyo Digimatic which I just worked out is 35 years old, it is still as smooth as silk and just feels right. I also have a cheapie version and though it is 9 years old and still working it just doesnt feel the same. Thinking about it, I guess that nine times out of ten I pick up the Digimatic rather then the cheapie.

Thread: Milling for beginners
03/08/2018 08:20:58

Thank you Jason, I enjoyed those, very informative.

If as you advise, using a small amount of Maxsyn cutting fluid, would that be neat fluid..?

Regards

Ron

Thread: Stanley - Quality?
03/08/2018 07:47:24
Posted by Ady1 on 02/08/2018 23:59:38:

I find their tools fine, very reasonable quality. Same for Halfords Aldi and Lidl

And I bet that Halfords, Aldi and Lidl tools are all made in China, not everything from China is low quality.

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