By continuing to use this site, you agree to our use of cookies. Find out more

Member postings for David Bingham

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

Thread: Electricity Supply
11/06/2019 02:06:20

My favourite pub topic. As member of the Institution of Engineering and Technology and retired electricity distribution engineer, you are pretty on the mark. Apart from the total required generation, the 415volt cables in a street full of electric cars coming on line at the end of a working day would be a disaster ! In the best scenario, the fuses at the local substation would blow, given a very high load or worse, under a more modest overload would cause cables to overheat and fault permanently. In my opinion, the drive for "smart meters" is to enable tariff boosts or, even, disconnection for load sheding to control this.

I would be more than enthusiastic to see all electric vehicles but it requires an astronomical investment in the electriicty infrastructure.

Thread: Graham Butcher's Warco Mill
25/08/2011 00:23:30
Hi John, I picked up the thread from Albums page 9. Unfortunately, he has not entered any personal details, so I don't know how you might contact him? Dave.
24/08/2011 01:27:51
Hi Mike and Mick. Just to clarify, My machine already came with its X - axis feed. I've added a drive to the down travel only ( have I got mixed up with my Z's and Y's ??).
As I said, my arrangement is pretty crude - for manual downfeed I simply slip off the drive belt. If it is the downfeed which interest you, I could try to post a couple of photos, though this might not be for a couple of weeks. Dave
22/08/2011 00:55:58
We'll never beat H & S - Too many cushy jobs and big profits for PPE etc. suppliers!!!
22/08/2011 00:37:42
The dimmer switch needs to be suitable for inductive loads and they can require a minimum load to work. Nonetheless you have come up with a solution that meets your requirements and that's all that matters. Its good to hear from someone else who recognises the capabilities of wiper motors in the workshop. I also built a wiper motor powered hacksaw from a feature in an early Model Engineer's Workshop - not very speedy but beats the drudgery of manual sawing - which I only do when absolutely necessary! Dave.
21/08/2011 01:22:59
I have one of these. A nice machine. Bought second hand and was equipped with a wiper motor to provide X axis feed (required over voltage of around 25v to give decent travel rate).
Tired of reaching up and round to operate the Z axis feed and column lock, I, crudely fitted a Daewou wiper motor and toothed belt drive from a food processor plus a simple lever at the front linked to the rear column lock.
Hardly CNC, but this has saved me suffering " Miller''s elbow" from the awkward position of the top mounted Z axis handwheel and reaching to the rear mounted column lock.
Cost was £5 for the motor from the local scrap yard (sorry, vehicle dismantler and re-cycler!) .
My 25v + power supply is by 2 battery chargers connected in series (12V SIDE ONLY!!!) with a smoothing capacitor paralleled across the output. Speed is controlled by a lamp dimmer switch to supply the battery chargers.
All very crude but I am very pleased with the arrangement.
 
Magazine Locator

Want the latest issue of Model Engineer or Model Engineers' Workshop? Use our magazine locator links to find your nearest stockist!

Find Model Engineer & Model Engineers' Workshop

Sign up to our Newsletter

Sign up to our newsletter and get a free digital issue.

You can unsubscribe at anytime. View our privacy policy at www.mortons.co.uk/privacy

Latest Forum Posts
Support Our Partners
cowells
Sarik
MERIDIENNE EXHIBITIONS LTD
Shopping Partners
Subscription Offer

Latest "For Sale" Ads
Latest "Wanted" Ads
Get In Touch!

Do you want to contact the Model Engineer and Model Engineers' Workshop team?

You can contact us by phone, mail or email about the magazines including becoming a contributor, submitting reader's letters or making queries about articles. You can also get in touch about this website, advertising or other general issues.

Click THIS LINK for full contact details.

For subscription issues please see THIS LINK.

Digital Back Issues

Social Media online

'Like' us on Facebook
Follow us on Facebook

Follow us on Twitter
 Twitter Logo

Pin us on Pinterest

 

Donate

donate