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Posts by royfellows

Showing 3818 results below:

Author Message
Topic: Hapoy new year!
royfellows

Forum: General Chat   Posted: 31/12/2017 18:27:00   Subject: Hapoy new year!
Cheers old friend, and the same to you. And hopefully a year of further successes for CMT.
Topic: Battery charging warning
royfellows

Forum: Lamps & Lighting   Posted: 27/12/2017 15:24:45   Subject: Battery charging warning
Yes, that similar to what I was doing but using the blue MF cases. Looks alright.
Topic: Battery charging warning
royfellows

Forum: Lamps & Lighting   Posted: 27/12/2017 11:04:30   Subject: Battery charging warning
[quote="Tamarmole"][quote="RAMPAGE"]Even the Oldham T cells leaked sometimes.[/quote]

I still use an Oldham T everyday at work. I will be sad when it dies as I do have a soft spot for them
Topic: Fellows lamps forum.
royfellows

Forum: Lamps & Lighting   Posted: 27/12/2017 10:27:44   Subject: Fellows lamps forum.
New: The Dragon EX

Same as D1800 but with following changes to Spec:

Analogue design with two simple modes from each switch throw,

Water resistance raised to IP 68 – 5
Topic: Battery charging warning
royfellows

Forum: Lamps & Lighting   Posted: 27/12/2017 10:02:36   Subject: Battery charging warning
[quote="Tamarmole"][quote="RAMPAGE"]Even the Oldham T cells leaked sometimes.[/quote]

Gaffer tape over the vent holes.

I still use an Oldham T everyday at work. I will be sad wh
Topic: Battery charging warning
royfellows

Forum: Lamps & Lighting   Posted: 26/12/2017 21:04:11   Subject: Battery charging warning
Hi John
I have known the lead acid batteries leak, major cause for concern if brought into contact with ropes.

I think that in retrospect, to talk about "the good old days" one has to
Topic: Battery charging warning
royfellows

Forum: Lamps & Lighting   Posted: 26/12/2017 18:41:17   Subject: Battery charging warning
I was told a story by SH of Talybont about a chap who wore a NIFE batty under a wetsuit,..... and it leaked.

You wont want to hear the rest, but he nearly died.
Topic: Battery charging warning
royfellows

Forum: Lamps & Lighting   Posted: 26/12/2017 13:45:24   Subject: Battery charging warning
[quote="Morlock"]Whilst refreshing my understanding of the Vanadium cell I found this little interesting snippet.

From Wiki.

"Lithium Ion batteries, for example, are typically d
Topic: Battery charging warning
royfellows

Forum: Lamps & Lighting   Posted: 26/12/2017 11:31:19   Subject: Battery charging warning
I have just taken a 2 cell Li Ion power bank out of my stock room which was charged on assembly about 2 weeks ago and kept for a customer who doesn't want delivery until after the holiday. The room al
Topic: Happy Christmas
royfellows

Forum: General Chat   Posted: 25/12/2017 09:54:16   Subject: Happy Christmas
I am on my own all day but will no doubt find something to do.

Hope to get out tomorrow.

I was in Devonshire Cavern at Matlock yesterday and then went on to Stoney M, never saw a
Topic: Fellows lamps forum.
royfellows

Forum: Lamps & Lighting   Posted: 23/12/2017 13:11:23   Subject: Fellows lamps forum.
Well here is the finished Scorpion prototype, ready for extensive testing.

[link]113688[linkphoto]113688[/linkphoto][/link]

Fully GoPro Compatible
Max output 3500 lumens
Topic: Battery charging warning
royfellows

Forum: Lamps & Lighting   Posted: 23/12/2017 09:42:21   Subject: Battery charging warning
Off thread, but relevant to current discussion:

Considering the main parts of a typical Transmission & Distribution network, here are the average values of power losses at the different ste
Topic: Battery charging warning
royfellows

Forum: Lamps & Lighting   Posted: 22/12/2017 17:23:18   Subject: Battery charging warning
A funny old thing is that I have an HP Mini 110 netbook and the battery went south a year or so back. All I could find to replace it was a £10 off eBay thing. I expected junk but what I got is quite g
Topic: Fellows lamps forum.
royfellows

Forum: Lamps & Lighting   Posted: 22/12/2017 16:05:27   Subject: Fellows lamps forum.
Hi again
I have just had a letter from the Patents Directorate. It seems that my patent is approved for the heat conduction and dissipation system as used on the Trigon. Finalisation Feb 2018
Topic: Battery charging warning
royfellows

Forum: Lamps & Lighting   Posted: 22/12/2017 08:16:05   Subject: Battery charging warning
[quote="Morlock"]Roy, how many full charge/discharge cycles can one get out of a reputable make 18650, ball park sort of figure?[/quote]

It isn't a 'sudden', its a 'gradual' and its usually
Topic: Battery charging warning
royfellows

Forum: Lamps & Lighting   Posted: 21/12/2017 21:23:09   Subject: Battery charging warning
Genuine though?
Topic: Battery charging warning
royfellows

Forum: Lamps & Lighting   Posted: 21/12/2017 20:29:28   Subject: Battery charging warning
The plane that came down was due to a pallet of Li Ion batteries igniting, but I am unable to determine any more information.

As most are aware on here, the Chinese produce a vast amount of
Topic: Battery charging warning
royfellows

Forum: Lamps & Lighting   Posted: 21/12/2017 19:48:33   Subject: Battery charging warning
You can travel with them but you need to state the watt hour rating, I give this on the web site for my power banks. There is also a max you can take on board an aircraft.

With respect I di
Topic: CALENDAR - LAST CHANCE SALOON!!!
royfellows

Forum: General Chat   Posted: 21/12/2017 17:53:01   Subject: CALENDAR - LAST CHANCE SALOON!!!
I have always thought that the word "should" is such a big, big word considering it only contains six characters.
:lol:
Topic: Battery charging warning
royfellows

Forum: Lamps & Lighting   Posted: 21/12/2017 17:51:06   Subject: Battery charging warning
[quote="AndyJ23Uk"]hey - i can confirm that extreme low temps is very bad for discharge profiles too

[/quote]

NiCad or Li Ion batteries please?

I think that this thre
Topic: Battery charging warning
royfellows

Forum: Lamps & Lighting   Posted: 21/12/2017 14:24:26   Subject: Battery charging warning
I have just been looking at the data sheet for the Panasonic NCR18650B cells used in my most popular lamps.

Charging, as I said should never be done below 0C, and according to manufacturers
Topic: Acrow jacks, trench struts and base jacks
royfellows

Forum: General Chat   Posted: 21/12/2017 11:37:39   Subject: Acrow jacks, trench struts and base jacks
Thanks, I have one that was given me and wondered about sourcing some more.
eBay, yes, should have known.
Topic: Fellows lamps forum.
royfellows

Forum: Lamps & Lighting   Posted: 20/12/2017 17:57:28   Subject: Fellows lamps forum.
Mm, I dont know about that. I am moving into sensible lamps for really sensible people, I have heard that there are quite a few about, but not round our way.

It appears that sensible people
Topic: Fellows lamps forum.
royfellows

Forum: Lamps & Lighting   Posted: 20/12/2017 15:46:32   Subject: Fellows lamps forum.
Hello people

With Christmas 2017 a mere few days away its a good time to wish all my friends and customers a happy Christmas and a good New Year.

Off the usual subjects, here is
Topic: Fellows lamps forum.
royfellows

Forum: Lamps & Lighting   Posted: 16/12/2017 09:07:34   Subject: Fellows lamps forum.
[quote="The Fresh Prince of Portreath"]I will.
;)

Took the trigon out this evening. It's still a very good lamp.[/quote]

A hot date?
:lol:
Topic: Fellows lamps forum.
royfellows

Forum: Lamps & Lighting   Posted: 15/12/2017 19:14:41   Subject: Fellows lamps forum.
You will need to get your order in for the new Scorpion when announced,
You liked the Scurions crisp beam, I took this on board and now use better centre spot reflectors that give same light qual
Topic: Super torches, whats out there?
royfellows

Forum: Lamps & Lighting   Posted: 15/12/2017 14:00:19   Subject: Super torches, whats out there?
You can use an ordinary high power torch and put a clear plastic bag over the end to diffuse the light. One of my tricks.
Topic: BCA Insurance
royfellows

Forum: General Chat   Posted: 14/12/2017 10:21:16   Subject: BCA Insurance
Its a general principal that you cannot contract out of law. The policy is a contract, between the insurers and the insured and as such is subject to UK law, it says this in the policy document.
Topic: BCA Insurance
royfellows

Forum: General Chat   Posted: 13/12/2017 22:05:54   Subject: BCA Insurance
I agree on that. If mineral rights are in separate ownership then the mine is mineral property not soil landowners. This is the situation at Craig y Dinas where soil landowner is Welsh Government, lan
Topic: BCA Insurance
royfellows

Forum: General Chat   Posted: 13/12/2017 21:11:57   Subject: BCA Insurance
also, Public Liability insurance is a requirement for delegates at the annual NAMHO conferences, and sorry, this includes mine in 2019.
Some underground sites on the meets list are Welsh Governme
Topic: BCA Insurance
royfellows

Forum: General Chat   Posted: 13/12/2017 20:53:05   Subject: BCA Insurance
[quote="The Fresh Prince of Portreath"]

Check your small print.[/quote]

Just did:

"Any activity approved by the insured, including but not limited to:

Cave,
Topic: Grey Gold /Greenside
royfellows

Forum: North West England   Posted: 13/12/2017 17:01:31   Subject: Grey Gold /Greenside
Ordinary mining practice requires shots to be fired at end of shift to allow the noxious fumes from nitro based explosives to clear overnight.

I am an ex car salesman who explores as a hobb
Topic: Grey Gold /Greenside
royfellows

Forum: North West England   Posted: 12/12/2017 22:19:26   Subject: Grey Gold /Greenside
Your all missing the Nazi train full of gold bars which could be very easily transported in the brand new Spitfires all crated and buried somewhere else.
Topic: BCA Insurance
royfellows

Forum: General Chat   Posted: 12/12/2017 20:42:20   Subject: BCA Insurance
As Legal and Insurance officer of CCC I would personally advise it for the cost. It goes with BCA membership and is not available on its own.

It is a good thing to have from a personal poin
Topic: Grey Gold /Greenside
royfellows

Forum: North West England   Posted: 12/12/2017 11:21:45   Subject: Grey Gold /Greenside
Good old Dave
:lol::lol::lol:
Topic: Grey Gold /Greenside
royfellows

Forum: North West England   Posted: 11/12/2017 23:10:33   Subject: Grey Gold /Greenside
I think that the story of nuclear weapons being tested underground in either Excelsior or Greenside may come from the same shop as the steam locomotives in storage under Box Hill, John Taylor was a Co
Topic: Battery charging warning
royfellows

Forum: Lamps & Lighting   Posted: 11/12/2017 16:14:42   Subject: Battery charging warning
Just a heads up with the weather
Its dangerous to charge Li Ion batteries in sub zero temperatures.

Laptops, mobiles etc are usually kept in the house. Caving gear often in garden shed
Topic: Lliwedd Copper Mine
royfellows

Forum: North Wales   Posted: 08/12/2017 11:55:31   Subject: Lliwedd Copper Mine
I maybe go and have another look next year, its been along time.
Topic: Lliwedd Copper Mine
royfellows

Forum: North Wales   Posted: 07/12/2017 13:05:36   Subject: Lliwedd Copper Mine
From memory the adit is a drive on the lode that eventually opened into a narrow stope. Interesting explore but nothing really exciting.

Next visit I found the collapse and climbed above to
Topic: In the news recently...
royfellows

Forum: North America   Posted: 07/12/2017 09:22:00   Subject: In the news recently...
Its probably a culture thing
Issues with this at Nenthead pale into insignificance compared with anywhere within easy driving distance of London.
Topic: Fellows lamps forum.
royfellows

Forum: Lamps & Lighting   Posted: 05/12/2017 16:31:07   Subject: Fellows lamps forum.
Scorpion latest

I have finally received my sample batch of front glasses after 6 weeks! Confirmed that they same as stock sample and just ordered quantity. When quantity order shipped and i
Topic: Super torches, whats out there?
royfellows

Forum: Lamps & Lighting   Posted: 03/12/2017 20:24:16   Subject: Super torches, whats out there?
[quote="Vanoord"]
Could conceivably get 4 18650s in that pack, but the 5V bit slightly confuses me. I suppose it may well not be 5V exactly...[/quote]

Its very common.
A parallel
Topic: Super torches, whats out there?
royfellows

Forum: Lamps & Lighting   Posted: 03/12/2017 19:39:47   Subject: Super torches, whats out there?
It has the essential strobes as well!
Topic: Super torches, whats out there?
royfellows

Forum: Lamps & Lighting   Posted: 03/12/2017 15:00:37   Subject: Super torches, whats out there?
[quote="SimonRL"]Totally unconnected, but look at this monstrosity:

https://www.ebay.co.uk/itm/Elfeland-35000LM-5x-T6-LED-Headlight-Headlamp-18650-Rechargeable-Head-Torch-Lamp/382220305008<
Topic: Super torches, whats out there?
royfellows

Forum: Lamps & Lighting   Posted: 29/11/2017 22:38:15   Subject: Super torches, whats out there?
As daft as it sounds my favourite at the moment is a £20 off eBay Chinese job that I wrote a seriously critical hatchet job on this website.

Found water getting in so fitted a waterproof sw
Topic: Super torches, whats out there?
royfellows

Forum: Lamps & Lighting   Posted: 29/11/2017 17:47:39   Subject: Super torches, whats out there?
Try ordering now
:lol:

Just sold last of my lamp stock and waiting parts.
Topic: Super torches, whats out there?
royfellows

Forum: Lamps & Lighting   Posted: 29/11/2017 17:30:33   Subject: Super torches, whats out there?
Yes, Fasttech are very good, I buy stuff in bulk, but beware long delivery times on single items, they end up on the 'slow boat'.
Topic: Super torches, whats out there?
royfellows

Forum: Lamps & Lighting   Posted: 29/11/2017 16:44:11   Subject: Super torches, whats out there?
You might want to experiment with modding a torch so its just bare emitters for photography, can then be placed behind rocks etc.
Topic: Fellows lamps forum.
royfellows

Forum: Lamps & Lighting   Posted: 29/11/2017 16:42:39   Subject: Fellows lamps forum.
[quote="gNick"]You are right and I am wrong, I am obviously having a early onset senior moment. It is indeed a polycarbonate one according to the Scurion website as well.

[/quote]

Topic: Fellows lamps forum.
royfellows

Forum: Lamps & Lighting   Posted: 29/11/2017 08:10:35   Subject: Fellows lamps forum.
[quote="gNick"]That my Scurion glass is glass I can confirm because it looks, feels and sounds like glass - I am an engineer after all!
[/quote]

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