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Member postings for Ian Parkin

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

Thread: DC Treadmill Motor
17/05/2019 09:57:23

I don’t want to rain on your project Mervyn but i will say that direct drive wont work without a reduction of perhaps 15 fold...just saying

16/05/2019 10:25:53

If this is to replace the manual handle for lifting the head of your mill that motor wont work you need a geared motor that has an output of perhaps 60 rpm.

look for one of these on ebay a parvalux geared motor 12 or 24v

dsc00854 (large).jpg

You only then need a low amps ( 3 or so ) power supply and a simple dpdt switch

Edited By Ian Parkin on 16/05/2019 10:26:28

Thread: fobco drill
15/05/2019 08:08:37

This is how they work on most fobco’s I’ve had both stars and larger

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14/05/2019 16:49:37

take the clamping mechanism out and look at it

its a bolt with a collar ( loose) that has a piece machined out of it to fit round the shaft

and a nut at the other end with a similar part machined out.

when you tighten the 2 pieces pull together and grip the shaft

theres no moving of the casting

Thread: Larger VFD/Motors
06/05/2019 11:10:43

Its an Emerson commander control techniques one

its by far my preferred choice of vfd’s if i’m Buying one new

easy to configure and the instruction book is only 40 pages long and they seem to do everything i’ve Wanted i’ve Probably installed 40 of these on various machines in day job

06/05/2019 10:37:27

This meter is showing the load on the single phase input on my 3hp 2.2 kw motor running via a vfd under no load and running the spindle with a cut on ,on a Colchester student

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Edited By Ian Parkin on 06/05/2019 10:38:49

Edited By Ian Parkin on 06/05/2019 10:39:35

Thread: Bandsaw speed
01/05/2019 19:15:55

Is it a Inca saw?

I use my Inca for cutting non ferrous materials with no adjustments

You cant really speed control that motor

replace motor with 3 phase or bring the motor off and use pulleys to slow it down if you think you need to

Thread: joining green laminated belt
27/04/2019 14:59:59

Though if you just clamp your scarfed joints into 2 slices of alloy and hold it at 100 c for 30 mins you should be good to go

27/04/2019 14:58:57

You probably have a habisat belt

this the official kit that they recommend.

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Thread: Building a Belt grinder - advice please.
25/04/2019 13:59:10

Peter

i went for the 1440 rpm motor so i can run it from 20hz to 100hz Or 570 rpm to 2800 rpm

so with my 200mm driving wheel i can go from 361metres/min to 1758 m/m (that’s 100km/hour)

Its been very useful so far i have built a mop shaft to take 200mm dia mops or wire wheels taking the drive with a rubber flat belt

25/04/2019 11:01:36

I built a 2x 72 grinder using a 3 phase 2hp motor 1440 rpm driven from VFD so variable speed

It can be stalled easier than i thought or rather the over current trip on the vfd trips out

I used a pallet truck wheel as the driver so 200mm dia

Thread: Heavy Machine Removals - any suggestions?
19/03/2019 10:41:07

What sort of cost is prohibitive?

i have a lorry with crane sometimes available in those areas

Thread: Anyone got a hydrogen generator?
14/03/2019 10:07:00

John R

it certainly looks well made

its like a small welder 30cm x 20 x 20cm and weighs 5 kg empty

i’ve only done edge polishing but the flame looks good enough for precision heating of small parts/jewellery etc

it runs for about 20 seconds and then switches off on a pressure switch then cycles on/off as you use the produced gas

Edited By Ian Parkin on 14/03/2019 10:08:39

13/03/2019 15:55:16

Well i filled it with my mix of 150g naoh and 1 litre of water and filled the booster with methanol as directions and it certainly works well.

as said teh flame is very hot and virtually invisible though it polished some 15mm Perspex edges very well..

How long should i leave the electrolyte in? And if it should be removed can i save it and reuse?

 

It was only £110 delivered from Belgium by ups 

Edited By Ian Parkin on 13/03/2019 15:57:26

13/03/2019 11:37:50

Has anyone got one of these hydrogen generators i bought it for acrylic edge smoothing but seems it can be used for small repairs on jewellery etc

it came with some naoh 500grms.the instructions say make up a 15% solution..so that’s 150gr of naoh to 1 litre of water?

anyhow does anyone use one and have any operating tips?

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Thread: Myford Lathe on Ebay
07/03/2019 07:41:55

What’s the part between the 2 biscuit tins that looks like it clamps on the bed and has 2 arms with what looks like a offset centre ?

Thread: Machine cleaning.....
26/02/2019 12:47:52

whilst i cant speak for flash ultra i can recoomend" elbow grease" which is sold in the cheaper outlets at only a £1 for a spray bottle.

i buy it in dozens when i need it spray it on brush and wipe

it also works well around the house too

Thread: Rack operated tailstock
23/02/2019 07:11:21

dsc00689 (medium).jpgHere is one I made for a Colchester student out of a mini steering rack

Thread: Telephone / Internet Scams
18/02/2019 07:59:43

I had a call the other day re stopping unwanted calls.

the Indian sounding woman was most insistent that I was responsible for the landline bill and I was a homeowner and younger than 85.

i responded with well I’m 87

call ended immediately

whats the method in only targeting under 85 year Olds?

Thread: Overload trip
08/02/2019 21:06:03

Remember that the current draw for this motor is only 33mA so even a fuse will struggle to protect that

I’d agree that some way of detecting a stoppage would be best

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