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: What are these wheels /tyres?|
i had searched for “all terrain vehicle” to no avail
”atv “ brings up loads !!!!!
|Thread: Chinese speed controller|
where are you Rob?
I can do you a small 3 phase motor and vfd cheaply if you want
and a 3phase and vfd is only 240v so no more hurty than what you have now
|Thread: Worx 20V drill issue|
The coming to an abrupt stop is the brake circuitry working perhaps?
|Thread: mark 1 1/2 student with an inverter|
So mount your inverter VFD and wire in the 3 wires out to your motor after charging the motor terminals to delta from star...
its best to supply the power to the vfd via an isolater
you can use your original handle switch and the reverse switch easily it don’t make any difference low or high voltage
your start switch just wants a normally open pair
your reverse wants a common to a NC one way and to a NO for reverse so whichever way your reverse switch is it sends a supply to the vfd to start in the relevant direction
You do need to be able to use a meter on continuity to work out the switches
you may also have a switch to the key on the cupboard and one on the gear guard
POST pictures of what you have if you are unsure
Edited By Ian Parkin on 11/06/2019 12:56:55
Edited By Ian Parkin on 11/06/2019 13:24:42
Short answer NO
You need to wire directly to the motor from the VFD
then use the switches to control the VFD
Exactly the machine i have with VFD but i have a clutch too
|Thread: A kitchen table workshop. Tool grinding problems|
Steve I was going to post you this gratis if you think you may use it
Whats the problem with a bench grinder?
noise or mess or size or expense?
If its noise and expense let me know and i'll post you something
Edited By Ian Parkin on 28/05/2019 14:48:26
|Thread: DC Treadmill Motor|
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
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
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|
This is how they work on most fobco’s I’ve had both stars and larger
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|
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
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
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|
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|
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
You probably have a habisat belt
this the official kit that they recommend.
|Thread: Building a Belt grinder - advice please.|
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
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?|
What sort of cost is prohibitive?
i have a lorry with crane sometimes available in those areas
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