Today I acquired...........

[Hood]

I've a mate who uses them, their only faults being they don't slice bread and make the tea. I'm a bit wary of plastic with modern, and future*, fuels, also I like the jerry can bayonet spout, and spouts for the above are difficult to get, or so he tells me.

*Hydrogen molecules are so small they diffuse through plastic. They are lighter than air so I reckon storing them in an inverted metal jerry can should be a goer.

They don't have the fuel in them long enough to have any issues in that respect

 

[Brad93]

Lots of the boats use these plastic ones from Canada I think, they rate them very highly but probably cost about £100



View attachment 349705

We've got one of those. Sure it's MOD or USAF. We've had it 20 years I'd say.

 

[brewdexta]

Bottom and other such expletives, I'm too busy to be ill

Fortunately my back is a bit better or the likely coughing would be really painful.

At the moment just have a headache and shivers. The misuss has it too, she's got body aches and no energy. Looks like the kids will have to take the dog out for a few days, the eldest did yesterday, Peggy promptly rolled in fox poo.....

 

[James1979]

Lots of the boats use these plastic ones from Canada I think, they rate them very highly but probably cost about £100



View attachment 349705

I’ve got a couple of the 1l ones for the bike. Had a MOD one for a lot of years but lent it out and never got it back. The MOD ones were embossed with ‘Water’, or at least mine was.

I don’t like the steel cans at all. Too many blocked filters and carbs. Not seen the stainless ones. They look good. Non sparking too I’d think which is handy.

 

[Onoff]

Trust me you need a bigger mat !
Rubber might not be great if it gets oily. I was using a bit of duck board, over a big peice of old lino.
In some ways Im lucky having a tiny shed for the lathe, swarf cant go all that far.

I scored a couple of HV mats they were chucking out from somewhere. Comfy underfoot etc, non slip and easy enough to de-swarf.

I'd take a picture but whilst on the floor they're obscured by other stuff on the floor...

 

[25.4_mechanic]

stainless ones. They look good. Non sparking too I’d think

Really???

 

[Dr.Al]

A Milwaunkee Fixtec grinder nut.

chuck it in the bin

Good plan. I bought two of them for two of my grinders. They stayed on the grinders for about two weeks before I went back to the original nuts. Most of the time I can undo the original nuts by grabbing the flap wheel or whatever. Occasionally I need to reach for the pin spanner. I thought the fixtec ones would be better, but they just mean I need to reach for a pair of pliers rather than the pin spanner. I think the fixtec ones are in the bottom of a drawer somewhere, never to see the light of day again.

 

[James1979]

Really???

Depends on the grade, but should be low discharge?

 

[25.4_mechanic]

Depends on the grade, but should be low discharge?

[BAM = Bundesamt für Materialprüfung => Federal Office for Materials Testing]

Authors: Thomas Grunewald
Co-authors: Rainer Grätz, L. Holländer
Document type: Lecture
Publication Form: Presentation
Language: German
Year of first publication: 2016

Synopsis:

Experimental investigations on grazing impacts with different types of stainless steel in explosive atmospheres, each consisting of hydrogen, acetylene, ethylene or propane with air, have shown that their ignition probability depends on both the type of fuel gas mixture and the level of kinetic impact energy. An influence of the chromium content in the stainless steel on the ignition probability by mechanically generated impacts could not be proven in the investigated range of chromium content, although an increasing chromium content actually lowers the oxidising ability of separated particles of increased temperature. Furthermore, other material properties such as thermal conductivity, specific heat capacity, density and hardness have an influence on the ignition probability of mechanical stainless steel impact events in hydrogen/air mixtures. As the thermal conductivity of the stainless steel increases, the ignition probability decreases. No influence could be proven for the specific heat capacity, density and hardness.

For impact processes, the standard EN 13463-1:2009 (DIN, 2009) specifies limits for the maximum kinetic impact energy below which the development of an effective ignition source can be assumed to be improbable. A distinction was made between impact processes with low-sparking metals, e.g. copper, brass, and impact processes with so-called "other materials". The limit values of these other materials result from BAM tests with unalloyed structural steel. In such impact processes, oxidation processes of individual particles with atmospheric oxygen are assumed, which ignite the gas mixture due to the high temperature rise.

However, in industrial applications such as the chemical industry, stainless steel is predominantly used instead of ferritic steel. In general, stainless steel highly alloyed with chromium is considered to have a lower spark probability in impact processes compared to ferritic steel, since the oxidation capacity of stainless steel particles decreases with increasing chromium content.

In the BAM impact tests, a decreasing oxidising capacity of the particles could be observed, but no decreasing ignition effectiveness of stainless steels with increasing chromium content.


FWIW (interessting that I never before asked this myself...)

Have a nice sunday all,

Carsten

 

[bricol]

Depends on the grade, but should be low discharge?

I'd be careful - not much difference to mild steel with 304, and the assumption is that other grades are pretty similar. You wouldn't use them in environments needing to be spark free.

 

[Hood]

We've got one of those. Sure it's MOD or USAF. We've had it 20 years I'd say.

Canadian and US forces use them, they are excellent from what the fishermen say. Only issue they had was if they got hot the lids could be hard to turn with the expansion of the fuel but that was easily solved with a spanner cut from some 5mm aluminium.

 

[bricol]

[BAM = Bundesamt für Materialprüfung => Federal Office for Materials Testing]

Authors: Thomas Grunewald
Co-authors: Rainer Grätz, L. Holländer
Document type: Lecture
Publication Form: Presentation
Language: German
Year of first publication: 2016

Synopsis:

Experimental investigations on grazing impacts with different types of stainless steel in explosive atmospheres, each consisting of hydrogen, acetylene, ethylene or propane with air, have shown that their ignition probability depends on both the type of fuel gas mixture and the level of kinetic impact energy. An influence of the chromium content in the stainless steel on the ignition probability by mechanically generated impacts could not be proven in the investigated range of chromium content, although an increasing chromium content actually lowers the oxidising ability of separated particles of increased temperature. Furthermore, other material properties such as thermal conductivity, specific heat capacity, density and hardness have an influence on the ignition probability of mechanical stainless steel impact events in hydrogen/air mixtures. As the thermal conductivity of the stainless steel increases, the ignition probability decreases. No influence could be proven for the specific heat capacity, density and hardness.

For impact processes, the standard EN 13463-1:2009 (DIN, 2009) specifies limits for the maximum kinetic impact energy below which the development of an effective ignition source can be assumed to be improbable. A distinction was made between impact processes with low-sparking metals, e.g. copper, brass, and impact processes with so-called "other materials". The limit values of these other materials result from BAM tests with unalloyed structural steel. In such impact processes, oxidation processes of individual particles with atmospheric oxygen are assumed, which ignite the gas mixture due to the high temperature rise.

However, in industrial applications such as the chemical industry, stainless steel is predominantly used instead of ferritic steel. In general, stainless steel highly alloyed with chromium is considered to have a lower spark probability in impact processes compared to ferritic steel, since the oxidation capacity of stainless steel particles decreases with increasing chromium content.

In the BAM impact tests, a decreasing oxidising capacity of the particles could be observed, but no decreasing ignition effectiveness of stainless steels with increasing chromium content.


FWIW (interessting that I never before asked this myself...)

Have a nice sunday all,

Carsten

UK HSE did similar testing in the 90's - I had to refer to it in my first job for storage and mixing vessels for rather flammable adhesives and their even more rather explosive gases . .

 

[zeppelin builder]

some big tooling for the dsg

 

[Ruffian]

Canadian and US forces use them, they are excellent from what the fishermen say. Only issue they had was if they got hot the lids could be hard to turn with the expansion of the fuel but that was easily solved with a spanner cut from some 5mm aluminium.


View attachment 349735

Wouldn't expect anything else from you! Looks awesome spanner.

 

[Brad93]

some big tooling for the dsg View attachment 349738

DSG? Pics olease

 

[Kram]

Good plan. I bought two of them for two of my grinders. They stayed on the grinders for about two weeks before I went back to the original nuts. Most of the time I can undo the original nuts by grabbing the flap wheel or whatever. Occasionally I need to reach for the pin spanner. I thought the fixtec ones would be better, but they just mean I need to reach for a pair of pliers rather than the pin spanner. I think the fixtec ones are in the bottom of a drawer somewhere, never to see the light of day again.

So far they are easily loosened, and I'd say able to put the same torque therough the handle that If normally expect to use on a pin spanner. I like them. There are pin spanner hooes, but a bigger size..
The bigger diameter is the main annoyance, with a 115mm it will reduce cutting depth, and mean more hacksaw'ing for 60mm+ round bar.

 

[zeppelin builder]

DSG? Pics olease

not used it much for a couple of years
as the forward clutch needs new sparkplug brushes , i changed the oil to modern stuff and the brush cant cut through the oil film
been using the chinese one for small jobs and its quite handy has 13/8 spindle bore

 

[zeppelin builder]

still sorting through yesterdays delivery

some long drills
some large reamers and some strange reamers with carbide tips and paralell drive end any ideas ?

 

[Onoff]

Good plan. I bought two of them for two of my grinders. They stayed on the grinders for about two weeks before I went back to the original nuts. Most of the time I can undo the original nuts by grabbing the flap wheel or whatever. Occasionally I need to reach for the pin spanner. I thought the fixtec ones would be better, but they just mean I need to reach for a pair of pliers rather than the pin spanner. I think the fixtec ones are in the bottom of a drawer somewhere, never to see the light of day again.

I put a blob of aluminium anti seize paste on the M14 shaft. Seems to help.

 

[Sergei Slovenija]

Canadian and US forces use them, they are excellent from what the fishermen say. Only issue they had was if they got hot the lids could be hard to turn with the expansion of the fuel but that was easily solved with a spanner cut from some 5mm aluminium.


View attachment 349735

I believe the canister was molded from HDPE and then treated with fluorine gas from the inside. A thin film of fluorinated polyethylene was formed, impermeable to large fuel molecules. In the US, this used to be a common practice.