Here is a list of all the postings RMA has made in our forums. Click on a thread name to jump to the thread.
|Thread: Bearing identification|
I can't help you with the specs of the bearings, but it would appear that the premature failure is due to poor seals and I would suggest putting an additional seal to prevent the dust getting to the normal seal. A seal to protect a seal in effect.
Many years ago when I worked for Timken Bearings we specified metal seals which cut into the edge of the bearing. I can't remember the trade name now but they were very thin, so didn't take up much room in the assembly. They proved very effective in hostile environments.
Having done a quick search I found Nilos rings, which appear to do the same thing. I hope that has been of some help.
|Thread: Parkside (Lidl) Cordless Angle Grinder|
I've never had a problem with the Lidl warranty whatever length the product carried. I always email Lidl customer service and they have contacted the supplier direct on my behalf and a replacement is sent. The 3 year warranty is what it says and replacements are in my experience always sent direct from the manufacturer and they've never asked for the original item to be returned. Too expensive to make it worthwhile I guess.
Products are in the main of Chinese origin, but the supplier, who offers the warranty is German.
|Thread: Black 5 missing parts|
It looks as though from the photo, you're only missing the vacuum pipe and front coupling. The vacuum stand and pipe are easily made. I couldn't find any commercial ones when I looked a while ago, and you can buy the correct coupling from Bruce Engineering (maybe others as well). The rear coupling has been made for connecting a trolley so you don't need a scale one, unless you're only displaying the model.
As said before, you only need four lamps and these are available commercially. Look up head codes on the internet and you'll see where they go.
Hope that helps
|Thread: Covid causing mental health issues.|
Mental health problems are as individual as people. The original poster is, by his own admission, happy with his lot and clearly the Covid situation hasn't affected his lifestyle and I hope that continues, but many people are affected in various ways by this year's events, some very seriously.
The thread/conversation has as always, diverted 'off track' and I don't understand what IQ has to do with mental health. Where did that come from? Some of the greatest brains around have suffered from mental health, depression isn't selective!
I have found with all utilities I can get deals on my terms if I tell them I'm leaving. BT always gets a bashing, and a few comments on here refer to individual assessment of the company, and of course everyone is entitled to their opinion.
However some research into the facts might be a good idea. The company might not have been the best when it was Nationalised, and it did have a monopoly (except for Hull), prior to Thatcher's intervention! I remember when goodwill and customer service was a priority. Unfortunately Thatcherism was all about making a profit and to hell with anything else. PO telephones became BT via a few name changes, a private company with many government strings attached. For example, the 'phone box network had to be kept and maintained by BT after privatisation, a massive loss for the company, and proved when Mercury was set up thinking it would be a money spinner.....how long did that last? The BT infrastructure also had to be made available to any new kid on the block.
The communications industry in this country is not straight forward nowadays, most new companies are foreign owned and OFCOM is pretty pathetic. From my experience it's best to shop around as soon as an increase is announced by your current supplier, it's surprising how good a deal you can get!
Edited By RMA on 14/08/2020 10:59:09
|Thread: Clubs during crisis|
Thanks for the link. It didn't come up when I did a search initially. My post can now be cancelled rather than duplicate.
Good morning all.
Just a quick survey of members of Model Engineering clubs (or any club) with regard to the crisis 'lockdown'.
Has your club locked up and virtually disappeared, or have they come up with any creative ideas to keep in touch or use some of the out side facilities, keeping withing the social distance rules of course? I'm thinking mainly of track use, but it could be anything.
Social contact is vital for any prolonged period and clubs can play a vital role in this. Maybe your club has come up with something special, if so, please share it on here.
|Thread: Pre-load of new bearings|
Thanks for the update since the '80's. I lost track of the company, and a few colleagues when they shut down in England. I know a fellow apprentice who ended up being the works engineer and went to India to set up the factory there, and then was no longer needed!
When I started in the '60's, production at Northampton was mainly for automotive and machine tools. Business boomed when the Vietnam war was on, a whole production facility for fighting vehicles, and we had many car plants around the country then. Larger bearings and railway axle boxes were produced at the Daventry factory. Large bearings used on radar installations and larger machine tools, even the BT tower in London. As a rep, I visited many customers making cars; trucks; planes; machine tools and ships, in fact anything that required bearings. What industry we had then!
It was a great place to work, they relocated from Birmingham during the war into a brand new factory which at the time was the largest factory in Europe. The only reminders now are a couple of road names on the new housing estates.....how times change!
Edited By RMA on 11/05/2020 18:00:36
Real feeling of nostalgia here reading this post. Sadly Timken (British Timken) no longer exists as they transferred operations from the UK to India and the two factories I spent my apprenticeship at are now housing estates!
I spent a while as a technical rep for the company before moving on to new pastures and I would advise anyone who has doubts about fitting bearings on a machine tool to ask the bearing company for advice. No point in trying to re-invent the wheel as it's old technology and all the info is readily available.
|Thread: Crime rate|
Yes that's quite true. In the main, the Police have to deal with the scum of society and a lot of the rebels of social distancing fall into this category I'm afraid. Experienced Police officers will think more than twice before taking action. They, like those poor health workers have unsuitable protection (if any), so why would they risk getting infected and taking it back to their family.
|Thread: taper roller headstock adjustment|
If you've eliminated all the possible causes mentioned by other's and still have the problem, it could well be the bearings after this time in service. High speed use and then a long 'lay up' would have a detrimental effect on the bearings.
Taper roller bearings are very easy to maintain. I would suggest you ascertain that the cones aren't 'stuck' on the shaft. If they are free you can adjust the preload to the recommended amount by the manufacturer. The bearing set must be preloaded. When adjusting, always keep the bearing moving. Forwards and backwards by hand will do. This ensures the roller moves to the correct position and seats on the thrust end of the cone.
If you have any doubt about the condition and you want to keep the machine it often pays to replace with good quality bearings such as Timken. They are not cheap though!
It probably doesn't apply in this case as your's is oil lubricated, but where the bearings are lubricated with grease, do not over fill. A common cause of failure is too much grease, it heats up and will wreck a bearing very quickly.
I hope you get get it sorted soon, it's very satisfying solving problems like this.
|Thread: Aircraft General Discussion|
Chinese 777 cargo flew into Stansted from China this morning. The heavies still arrive as normal, but it's a bit worrying that Wizz Air are starting passenger flights from Luton with Spain and Portugal on their destination list.
I did ask RVL about their survey flights and they said they were classified, but they did say they're taking advantage of the clear skies. The drone out of Lydd is busy as well.
With clear skies, the sound of a 747 Cargo throttling back getting established onto the ILS to Stansted yesterday, made me go outside to look at it. Very reminiscent of the days when aircraft were a rare sight! Inbound from Moscow, so cargo would be? Very interesting.
Still amazed by the amount of passenger flights into our country.....utter madness!
I'm sorry, but I don't think we had a plan! Enabling the NHS to cope is obviously necessary, but why were they so unprepared? The lack of basics such as PPE is unacceptable. When China released footage to the world of the desperate building of those hospitals in January, the rest of the world should have realised that this was serious.
As I said before, to keep reinfecting doesn't help at all. South Korea got back to normal very quickly, and now flights are again being allowed, they will have to be careful, to my knowledge they are testing at airports but my contact there hasn't reported lately.
Had the world sat up and taken measures at roughly the same time, we would all get over this a lot quicker. As it is, we will more than likely be staying in until the last country catches up. Try telling those who've lost loved ones that 'herd immunity' is a good thing!
Unfortunately this country has avoided actual lock down. It would have made more sense to close everything other than hospitals and really essential services and we could have got over this a lot quicker, as S Korea did for example. Today airports are still open and the possibility of the virus coming in from Europe; USA and the rest of the world is highly probable. No arrivals are being checked, they are let loose into the community while we are all staying in obeying the rules!
Sheer madness in my opinion. An RAF A330 left Brize Norton yesterday and routed to Goa, presumably to repatriate people. This should not happen, unless these people have been tested accurately for now being immune (highly unlikely) they should all stay where they are.
Passport renewals are not an urgency!
This thread has now reached 34 pages and there are many comments ranging from real health problems to worries about deliveries. This forum has members spread around the world and this problem is global.
We have known about this virus since December last year (first case in China in November), and we saw impressive footage of the Chinese building two hospitals in January within two weeks. That worried me then, as China wouldn't have gone to those lengths if it wasn't serious, but I was told by friends and family not to be so alarmist, it's just media hype etc etc. Why didn't so many countries around the world sit up and take notice?
We are suffering now in the UK because of lack of action and correct strategy by our government who to date have shown they are incapable of actually governing. We were under resourced right from the start and they are now trying to play catch up. We were just advised to keep on washing hands whilst singing happy Birthday. Stay indoors unless absolutely necessary, which in the main we are all complying with. However, as I write this an Alitalia flight is in the air routing from Rome to Heathrow. Three flights from JFK will take off today routing to Heathrow. These are just two examples, NO checks or quarantine for passengers when they arrive! ALL airports should be closed except for urgent cargo.
My question for our so-called government is Why? When we are doing our bit by self isolating and fearful of going out to buy food, are you still allowing infection into the country on a daily basis? I do understand it's tough for those who went on holiday during the this time and find themselves stranded, but most were aware of the risk before they went. They should be quarantined where they are until fit to come back. This is a global problem and should be treated as such. Maybe it's time for the UN to get involved?
South Korea for instance stopped all travel and tested their population right from the start and they are now recovering. Tough measures bringing faster results. Simple!
I hope you all manage to stay safe, wherever you are. For those living alone it's essential to try and keep positive as this could drag on for longer than we realise. Unfortunately no one knows and that fuels anxiety.
|Thread: There is always one|
I'm afraid there is more than one. That Kinnock MP travelled 100's of miles from Wales to see his Dad on his birthday. Some people will never get what the word emergency means.
|Thread: What are you doing to stay safe|
Not exactly true. There are many freight only aircraft in the air at the moment, and I've had details from Delta, United and Lufthansa who are filling the seats with packages as well as the cargo hold of the plane, probably worth the risk if they're carrying essential medical freight. That leaves many passenger flights still going on, some of which are rescue flights of course.
The point is that any aircraft flying from one continent, state or country to another whether freight or passenger will spread this virus. In the meantime many countries are in serious lock down and some not. Unfortunately we are not yet in the lock down position. If the world wants to recover from this we must collectively stop travelling. I've just checked North America again and it's covered with aircraft in flight....certainly not all freight!
I don't know where you live, but I have two members of my family who are Police officers and they are too busy with other things including dealing with morons who keep calling them on 999 for the most stupid things! They're not stopping people here! Not many people about anyway as most are being sensible.
True, many aircraft are freighters, but have a look on Flight Radar and see how many passenger aircraft are in the air at the moment. Last night North America looked perfectly normal!
In my opinion we have a global problem and it should be a global lock down....too many weak links, and no health service can cope with it.
I don't know of anyone actually being stopped by the Police in the UK. We simply don't have enough officers to be effective in this. The media keep on saying the UK is in 'lock down', it isn't. Boris has only issued advice, nothing mandatory other than closing selective businesses and gatherings.
I can't get to Spain for obvious reasons, but I'm in touch with my Spanish neighbours and read the Spanish press daily. That country is in real lock down, and the Police are patrolling everywhere, even the supermarkets. Spain has a massive Police force so enforcement is being carried out. One couple in Madrid have been fined 60000€ each for going to the supermarket!
Having said that, Spain has suffered badly and it's not yet contained in spite of serious lock down. A couple of reports I've read indicate that bulk purchase of useless testing kits, and football fans returning to Spain after a major football match in Italy.
As many have said on here, going out for food is the weakest link. We stay indoors for a week and then go to the supermarket, all the good work possibly undone, but there is no alternative.
I think mental health issues of many who live alone will become the major outcome of all of this. Maybe the government could start preparing for that, it would be good to be ahead of the game for once. Media headlines this morning speculating that it could go on beyond June is no help to anyone, it just fuels anxiety.
Hat's off to all the public servants....NHS, Police and Fire service, all on greatly reduced budgets, and the many who are doing a fantastic job who I haven't mentioned.
Is the world taking this seriously? I've just looked at Flight Radar and it's surprising how full the skies are with aircraft! I personally think world economy is getting more consideration than world health!
I hope you all manage to stay safe. Now off to the supermarket for my weekly essentials!
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