Member postings for Robert Atkinson 2

Neil is totally correct. The Police typically ask "is this your car" not are you the owner. They ar intersted in both ownership and registered keeper. The owner for possession and keeper for road traffic offences.
These could both be different from the driver. An example is a leased company car. The owner is the lease company, registered keeper the limited company and the driver anyone with permission.
You need the owners permission to drive the car but in the case of a vehicle on finance or lease the entity taking out the finance / Lease as delegated authority. The finance company does not want to be the keeper because they would some liability if the driver was not identifiable following an incident.
Just because you have the V5 and you are the keeper does not mean you own the car. If it is on finance (even from the previous keeper who did not tell you) the finance company can come and take it back if te payments arn't made. Conversly dody people lease cars because they can't be seized aginst other debts.

I've been in the situation when I was stopped one night by the police when in the company (limited company but only me, owner and keeper) van. They tried to ttell me I could not drive a company van on personal use without permission. They were a bit miffed when I held a board meeting with myself and gave myself permission.

Robert G8RPI.

I've been selling on ebay for many years, mostly electronic test equipment. I used to start everthing at 99p but things have changed. It used to be an auction site but is now more of a marketplace. Starting low is now too much of a risk as many buyers don't know how to bid these days. I'd start at 25-50% of the prices suggested here. If you are prepared to ship it (look at pallet services, about £50 for mainland UK) you will open up a much bigger market and get a better price.

Robert G8RPI.

Bill raises an important point. the "tax" (road fund licence) no longer transfers with the car. It is cancelled when the car changes registered keeper. Unless your son has actually paid for new tax the vehicle will be untaxed. The online status may not update immediately especially as the previous keeper does not seem to have notified the DVLA of the sale. If they had it taxed then the website may be showing that.

Robert G8RPI.

Judging from the CE mark on the front it's more likely to be early 90's rather than mid 80's

We need more measurements than that

in addition to the two readings you have can you do

Black to Brown

Case "ground" to Green / Yellow

If there is a reading between case and Green / Yellow also measure case to brown and case to black.

The machine probably originally a dynamo may have been modiifed in the past, we can't be sure.

Basically here are two ways to wire the basic motor windings- series or parallel (Shunt) as you only have 3 wires it appears that only parallel is possible unless there is also connection to the case (as there would have been in the original dynamo).
The other thing to sort ou is the direction of running, if you reverse ONE of the windings the motor will run the other way.
There is an extra decision which is where to connect the speed controller. while it may seem opvious to connect it to both field and armature, there is no reasion why it should not be connected to just one with the other connected to the supply all the time the motor is running.

If you want to try different combinations without fireworks get a couple of 55W headlight bulbs and put one in series with two of the (positive) motor connections. This will limit the current to safe levels. The motor shaft will have to be disconnecte from any load of course.

Robert G8RPI.

Just a thought as these in light alloy and are for woodworking use you could just about use a router on lowest speed. Make up a jig in MDF rough out blanks with a hacksaw, chain drill the through slot first.....

Robert G8RPI

The slots are undercut so actually quite a challenge to make with hand tools. You would have make a lot to justify buying a mill.

Robert G8RPI.

The best option as suggested by Guy is an auction sale. A clearance firm or dealer will pay rock bottom prices. With on-line bidding an auction gets good coverage these days and many items go to end users who will pay more than the dealers who were the traditional buyers at auction. I've bought but never sold with them, but Peaker pattinson seen to be very good. see **LINK**

Look at some of their sales and then call them for advice. Probably best to put it in one of their collective sales. If looking to clear everything be sensible with starting bids i.e. low and do put a reserve unless he knows for sure he can get the reserve elsewhere for a quick sale. Big advantage of auctions for the seller is no comeback, warranty etc, everything is sold as is. You deal with the auction house not lots of individuals. It's worth batching up small items, you would be surprised what a box of bit and bobs, off-cuts etc. will go for.

Don't forget to post the auction details on here.

Robert G8RPI.

Anyone can PAY for insurance on a car but if they are not the owner the owner ust be named the benificary of the policy. This is common and happes hundreads of time every day.
What won't happen is multiple payouts if there are multiple policies covering the same loss.
What insrance companies don't like is someone with good history insuring a second car with a less experinced named driver. They (often rightly) assume the second car is actually the main vehicle for the higher risk driver.
So the non owner insuring a car as sole driver (as in OP's case) should not be an issue.. And this appears to be the caase as the OP has stated the car is insured his son.
Unfortunatly this post has turned into a bunch of opinons and anecdotes most of with are no help whatsoever to the OP who doess not drive.

Robertt G8RPI.

Joseph akes a good point about fan vibration.. Another issue is the high energy density and thermal gradient of small peltiers. Have you considered liquid cooling? just small pump and tank would be enough, you probably don't even need a heat exchanger if the tank has reasonable capacity and surface area.

Robert G8RPI.

I'd add the following,

When you son insured the car the insurance company will have asked who the owner was. Assuming he told them it was you there should be a record of that because in the case of ay a fire of theft claim the insurance should pay you, the owner, not your son. This is the same as if he had the car on lease or finance. Check the insurance documents.

As others have said, get a receipt for the sale to YOU at £700 from the seller with his name and address on it. It can be a scrap of paper torn off an envelope, push comes to shove it's up to any disputing it to prove it's fake, not you to prove it's real.

With insurance docs saying you are owner and a you having a receipt there shoul be no issue.

Robert G8RPI.

Plus one for camera CCD cooling. Called a "cold finger" .

Biggest issue with coolled LCDs is keeping condensation off the electronics. Hermetic + vacuum with bit of dessicant is ideal but hard to acheive. A separate container with replaceable large (0,5kg) silica gel bag piped to a reasonably well sealled camera head is a good compromise.

Robert G8RPI.

You don't need anything that fancy in reality. JJust a 12V transformer and a bridge rectifier will d just fine for running a motor. A 100VA 12V transformer will be big enough for intermittant use and a 150VA one for constant duty. A 25A bridge is recommened they are cheap enough.

Robert G8RPI

Actually a modern 5 or 0 weight engine oil is probably OK and better than a engine oil comtempary to the lathe. Modern oils have fewer additives that might harm yellow metal bearings.

That said I'd still go for a good SAE32 hydraulic oil.

I just bought a 5l tin (lifetime supply for me) of OM33 (UK military spec oil similar to Nuto 32. Hyspin 32ZZ meets the OM33 spec) on ebay for £10 www.ebay.co.uk/itm/HYDRAULIC-OIL-FUCHS-LUBRICANTS-MIL-SPEC-PREMIUM-QUALITY-HYDRAULIC-OIL-5L-CAN/143226367787

Robert G8RPI.

The battery has lasted because A: it was made before the total ban on mercury inn akaline cells and B: the battery is actually disconnected when the shaver is off.
Allaline cell made afetr about 2005 had no mercury added and as a result tend to leak due to hydrogen build-up. The mercury stopped the pressure build up IIRC it acted as a catalyst for a re-dsorbsion reaction. Any alkaline battery made between 2005 and about 2016 is likely to leak. Both Duracell and Energiser dropped their leakage warranties agound this time. They seem to have cured the issue though as recent batteries seem to be better and the warranties are oming back.
Modern electrnic kit discharges batteries when "off" because there is not real switch, the elecronics is active, just waiting until you push the on button.

Robert G8RPI.

+ one for Joes comments. and as Dave says fault can develop, you arn't using an extension lead by any chance?

All metallic parts of the machine that might come into contact with a voltage ove 50V in the event of a fault MUST have a path to ground (unless the machine is double insulated which is unlikely and not the case ith yours as you have an earth). This path must be designed in and able to carry the full fault current. Just continuity becuase conductive parts hppen to touch .s not good enough. Unfortunatly many machines do not meet this requirement.
The use of a 110V spindle motor may indicate a more serious fault/ design issue if the main supply is 230V.

Sponges and saltwater have no place in any safety earth.

Robert G8RPI

Commercial CNC machine or homemade?
5uA is enough for a shock. Assumuing you are in the UK or EU with 240V mains the 120V you are measuring is caused by the inut filter capacitors acting as voltage divider, The common of the filter appears to be connected to the machine metalwork but not the mains earth. This could be a fault in the machine or the workshop wiring.

Robert G8RPI.

Well if you want a gasturbine engine try Everett

https://www.everettaero.com/

I like small turbines and had several some years ago but a change in curcumstances and job move means I don't have any at the moment.

Robert G8RPI.

Anchor are still in business
https://www.anchorsupplies.com/ but a tiny store in Nottingham compared the old one. They had a "museum" collection which was lost in the fire. Their Ripley depot is still there.

Robert G8RPI

Allowing for losses and being conservative, three 18H 12V batteries would do assuming full load all the time. If you are optimistic then three 12AH would do.

However as noted above running a battery at it's 1H rate or faster is not good for it, Ii'd go for a bigger battery if you have space.

Three of these would be OK (I've never used this seller or brand) https://www.batterymegastore.co.uk/catalog/product/view/id/6518/s/victron-energy-bat212200084/category/363/

Robert G8RPI.