Here is a list of all the postings Bob Mc has made in our forums. Click on a thread name to jump to the thread.
|Thread: Sewage dumping|
On the BBC News website political section, there is an item about the amount of sewage being discharged into the rivers and a graphical representation of the amounts.
It does not mention any discharges into the sea but that's where it will all end up eventually.
There were over 3 million hours worth of raw sewage discharged in 2020 into rivers with United Utilities having the majority of 726,450 hours worth of discharges the reason being overflow water during periods of prolonged heavy rain.
As far as I am concerned there should be no raw sewage dumped into rivers. I was surprised that an old pop singer of the 70's.?or was it 80's..? can't remember...didn't like his songs anyway.. ..Fergal Sharkey, who seems to be a 'clean up the waterways' figure head campaigner has voiced his opinion that it is a disgrace.
It seems to me that there has been no concerted effort to address the problem over many years which won't get any better if the infrastructure is left to carry on as normal...with the effect that eventually the rivers will become sewage ways. And here we are lecturing about climate change when every river in England is polluted.
Thanks to all who gave their information,
The overall situation then is that only in certain circumstances does actual raw sewage get dumped into rivers and the sea, I can understand that surface water may be contaminated and I would be surprised if the phosphate levels that Roger mentions are not classed as illegal.
What does surprise me is that there seems to be little in the way of surface water being checked for pollutants and that there does not appear to be any technology to make this automated rather than there being random tests.
What would be interesting is to see a map of where the sewage outflow pipes are so we can avoid those areas when visiting coastal areas or rivers.
From what I read of the ammendment, it was not just a case of stopping raw sewage but having the companies involved to pursue reducing the levels being dumped.
I am trying not to be political but I am asking this question since I am not fully conversant with the treament of sewage and perhaps a forum member could provide some information as to the reasoning behind a news item that an ammendment to reduce the amount or stop raw sewage being dumped into rivers & the sea has been defeated in Parliament.
Perhaps there is an engineering principle which cannot be achieved with the treatment of sewage at present.
|Thread: Tool post grinder step by step|
Another great video Celso... Obrigada
|Thread: Blackpool Model Show|
Blackpool Model Show...
Thought I would give this a mention as I haven't seen anything about it advertised in ME ... although there is at least one Model engineering club attending the main theme seems to be model boats....anyway I'm going to check it out in October.
|Thread: Weston Park model aircraft show|
Although I am not a model aircraft enthusiast, I was persuaded to go to the Weston Park International model aircraft show.
My interest is normally model boats but I have to say that the show on Saturday was very good, the models being displayed were to be honest ...beyond belief! ...you would be hard put to say they were not the real thing either on the ground or in the air, albeit scaled down.
The drone and helicopter displays were also something not to be missed and the manouverability of these models seemed to defy the laws of physics!
The commentator on the aircraft field was apologetic as some of the international display teams could not be there due to covid restrictions but I thought it to be one of the most well organised and interesting shows I have been to,
I was told by my compainions who persuaded me to to that there would also be model boats as well, and there was....one.. a senior gentleman and his model of the African Queen, God bless him... however there were a number of hovercraft which were quite interesting not least because of the fact that the small pond although having a weed problem did not affect the sailing of these craft one bit, something which I have found to be a rather large problem with the waters of the model boat clubs I have been to recently and rather off putting for the unwary, I just wish there could have been a better representation for model boating.
Just one more item I found fascinating was the pyrotechnic display although in broad daylight with some twenty model aircraft flying between the fireworks interspersed with what I can only call 'bombs' ... the heat of which was felt immediatly with a resounding thump on the chest afterwards ...
My congratulations to the organisers.. Bob.
|Thread: Small dc brushed motors|
Sorry to reply so late ...
was away for a few days and didn't see the responses....thanks to all who replied to my question, these have been most helpful...
am in the process of making an r/c boat, I need to find out which motor to use, I have already used a '400' type motor but have no idea what this means ... I will require a larger motor for the next build so need to know volts/amps/rpm/mechanical size etc.... is there a chart for all this?
will be grateful for any information....Bob.
Edited By Bob Mc on 23/08/2021 08:09:09
|Thread: Boat fittings...window frames.|
Thanks pgk & Ramon,
I am only a beginner and I am grateful for any suggestions regarding this build, I will most definately have a look at Wide Awake, I remember seeing it and was tempted....
I was hoping to make the clinker hull using traditional methods but people with experience seem to be saying it is not easy, ... will just have to do it and see what happens..
Thanks again. Bob.
Another good idea, thanks Perko.
My next attempt at boatbuilding is a model of a 30 foot boat originally built in the Orkneys, Kathleen.
Tthe real thing is clinker built and it seems that this is a lot more difficult to model than a carvel hull but I am going to have a try anyway since my first build attempt has gone so well, and watching it cut through the water whilst under radio control is most pleasurable.
Not wanting to give the impression I am promoting model boating but I can now involve my blessed wife in my interest by visiting various places, stretches of water or boat clubs usually with an attached park or grounds and combine it with a picnic or let her idle her way through countless knicker and bra shops where men from stable backgrounds have needed some sort of counselling or a stiff drink afterwards.
Anyway....picture of the real thing I am about to have a go at... thanks again to all who have given advice.
Thanks Martin & Bernard,
...Good ideas !!
I do like Bernards idea of machining a step in thick walled tubing..that is something I never thought of doing it that way, got to give it a try....Thanks all...!
I was worried that brass angle would deform or split but thanks again and will have a go.
I have been making a model R/C boat, which is my first attempt at model boat building, and I found that trying to make window frames out of brass to be a most frustrating process; I eventually made the 8 identical frames out of the larger sized brass olives found in plumbing fittings...as below.
You will notice there is no 'lip' on the frame but when fitted in place it gives the impression that a lip is there, however on my next project I will definately need the lip as would be found on a proper frame.
I am sure I have seen loco's with brass framed windows, is there some magical technique for doing this?
Any advice on this would be much appreciated.....Bob.
nb...the current model below...
|Thread: Scale gearbox (or how I leaned to love aluminium)|
Thats a lovely piece of machining Steve, would be interesting to know how you held it in the lathe... also is the differential a bought in item it looks very well made..
|Thread: Garmin sat nav|
It seems to me that this satnav service is a big problem, I had a car with satnav and although the maps were becoming out of date, I didn't update the version as I was about to get a much newer car.
I was told by the salesman that the car being the same model but newer was identical to the old one, and I did a calibrated tyre kick test... and sure enough on the dashboard screen there was an icon for navigation. After going through the trauma of parting with a few thousand pounds I collected aforementioned vehicle and went off quite happily... a few days later I thought to try out the navigation ... surprise surprise! there was no on board satnav device, I spoke to the salesman.... " you need a smartphone...everyone has a smartphone" .... "no they don't" I says... I ain't got one! ... its like me....its not smart enough to realise that I should take no notice of car salesmen.
"anyway...he says..its dead easy to get the phone to display the navigation map on the screen... no problem at all"
The fact is I need a larger screen to view the maps, and I don't want something hanging off the dashboard which I have to take off every time I park up, as has been said, the mobile phone icon buttons are too fiddly to mess about with.
So I obtained a smartphone to try it out, the dashboard screen informs me that I need to have the correct app for the service... but no indication of what this is... I trawled the manufacturers websites and went round in circles for a few hours eventually ending up speaking on a chat line..
A very nice lady who informs me that the car needs its software updating..."can I do it online" I says...."no" she says...you have to take it in for that service....."will it cost me" I says...."yes" she says.... so basically I have bought a smartphone and now will have to pay to have what should have been in the car in the first place...!
Its all a load of Old B********ks
|Thread: Advice required for model boat nameplate.|
Thanks everyone for your advice,
I had never thought of having an enamel badge with a smaller section I could cut off...that is a great idea...
thanks pgk and all.
Could anyone tell me where I could have a couple of nameplates for my model boat made, obviously water resistant material say brass or perspex, I have no means of making something with small text etched or carved or printed.
The nameplate is only ~ 40 x 10 mm long and need only be ~1mm thick, I don't mind paying for this, after all I have spent many hours in making the model and if I make it... it wouldn't do the model justice.
An enamelled badge type would be absolutely fantastic .. however I don't know if there is anyone doing this for 'one offs'..
I feel certain there must be someone with expertise in this subject on this forum and I would be gratefull for any advice.....Thanks...Bob.
|Thread: Fun on the water...|
The motors in my boat are brushed and although it is powerful enough it would be interesting to know how much more efficient the brushless motors are, including the electronics to provide the voltages....or how much extra run time do they provide?
Also....I am a complete beginner with boats and I opted for plastic propellors, is there any advantage in having brass props?
Ah yes boats ! that got my interest...
For my first attempt at a model R/C boat I built a twin prop motor cruiser, Ravenna, designed by Jim Pottinger.
The boat building started out when I replaced a venetian blind, I thought it a shame to throw the slats away, they are straight grained and thin enough to be bent into shape with some persuation from a little steam, and the idea came to me that they would be great for making a boat hull.
Hull nearly finished....You can see the slats on the far side.
I have not finished the painting as yet and not put the name to it, however I have tried it out on the water albeit a local stream which showed up a problem with the steering...it needed proportional control and rather than go the route of having another box of electronics I fitted two mico switches so that when the rudder is full over it disconects one of the motors and the other gives the turning torque.
The R/C control is a 2.4GHz Spectrum DX7, I think that this R/C system does not interfere with other boating radio signals but am not absolutley certain, I have been hoping to join the Etherow model boat club but at the last attempt to get there we were turned back by police who told us an unexploded bomb had been fished out of the canal....so I went home.
If there are any members of the Etherow club lookin in I would be much obliged for information to join, the last time I looked on the website the notice was that the club was in lockdown.
|Thread: uv ballast|
Replacement UV lamps & LED UV lamps.
Mick...there has already ben a discussion about this..see thread
Pond filter with UV lamp
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