Products > Test Equipment

Test Equipment Anonymous (TEA) group therapy thread

<< < (25231/27435) > >>

med6753:

--- Quote from: mnementh on July 12, 2022, 07:51:40 pm ---
--- Quote from: bd139 on July 12, 2022, 05:25:45 pm ---
--- Quote from: med6753 on July 12, 2022, 05:24:01 pm ---
--- Quote from: bd139 on July 12, 2022, 05:21:58 pm ---I wouldn’t worry about precision there. They are usually specified to -20% +100%. A 5600uF is fine for the 5000uF

--- End quote ---

Of course and I realize that. But anal me insists we be as close as possible.  |O :P :-DD

--- End quote ---

Been there. I’ve untrained myself from that way as it was getting expensive  :-DD
--- End quote ---

Meh. I'd have slapped a couple 2700uF on there so I could keep the leads through-the-PCB short, which is kindof the point of that adapter and all the different hole patterns it supports. Leaving those leads long like that fucks the ESR of the cap right to hell. :-//

mnem
*unplucked*

--- End quote ---

I disagree. Given that the modern replacements have lower ESR than the originals I see zero net impact.

AVGresponding:

--- Quote from: BU508A on July 13, 2022, 05:31:39 am ---
--- Quote from: 25 CPS on July 13, 2022, 03:38:40 am ---
--- Quote from: BU508A on July 12, 2022, 06:15:34 am ---Here is one for our Spara from The Signal Noise Path:


--- End quote ---

That was interesting.  I think I saw the same dead U1253B on eBay when I was looking at prices to see if the used one on Facebook Marketplace (still there...) was reasonable.  Also interesting is that the replacement display is a third party kit.  I could've sworn I saw somewhere that Keysight sold OEM displays as a replaceable part, particularly since that is a current product; I'll have to check their website later.  Another interesting thing is that it's the U1253A/B that get all the attention.  I haven't seen much said about the U1273A/AX or the insulation testers that also had OLED displays.  It's the insulation tester that worries me long term.  Those were recently discontinued and the seven year support period after the discontinuation date is starting to tick down.

--- End quote ---

One can get those modules here for example (NAWTS):

https://www.lcdandmore.de/c/display-module

https://lcdstore.de/epages/17406888.sf/de_DE/?ObjectPath=/Shops/17406888/Categories/Grafikmodul/GrafikOLEDModule

--- End quote ---

And I can confirm that they work very well indeed. I really need to motivate myself to find the front end issue on my 1273, it's a nice meter.

AVGresponding:

--- Quote from: tautech on July 13, 2022, 12:57:20 am ---
--- Quote from: vk6zgo on July 12, 2022, 11:36:10 pm ---
--- Quote from: tautech on July 12, 2022, 10:43:53 pm ---
--- Quote from: mansaxel on July 12, 2022, 09:49:31 pm ---
--- Quote from: AVGresponding on July 12, 2022, 10:27:35 am ---Depends which V4. The Taunus V4 went from 1.2 to 1.7 litres. The Essex V4 was either 1.7 or 2.0 litres. I've no idea without researching, what might have been fitted to US market Capris.

Considering the shoehorning that Triumph had to do to fit the 2.0 litre straight six into the Spitfire chassis to make the GT6, it's no surprise that only someone of supreme pig-headed stubbornness would attempt to do it with a V6 lump.   :popcorn:


--- End quote ---

These were the engines where one tops up the fuel and refills the oil tank.

Ending up behind it on the Autobahn is an exercise in blue smoke.

The V6 IIRC was the worst.

--- End quote ---
Yep, Pops first Mk4 Zepher kept fouling one plug and mechanic suspected it had a broken ring from new.
Pop flicked it after a year IIRC and brought another one that went just fine unit a swift trip 6 5hr trip home with the bro-inlaw/my uncle up it blew a head gasket and that was the last Ford Pop ever owned.

Only a year or 2 later I started with Fords, Cortina Mk1 wagon, Mk3 sedan 1.6 crossflow, Mk3 sedan 2L OHC and last an Escort Mk2 1.6L Sport before I too learnt my lesson and never brought another.  :horse:

Then almost all vehicle production ceased in NZ so rather than EU stuff NZ mainly sourced from Oz and the land of the rising sun. I went to GM/Aussie Holden after the tragic run with Fords and still have a 2002 Commodore we brought new.
GM lost a lot of followers when they closed their 50+ year old Aussie plants only a year or so back when they were already sending an Aussie developed grunter to the US and UK and since then the Mustang has gained a large foothold and munched on GM's lunch.  :palm:

--- End quote ---

GM are turds----the megalomaniacs in Detroit just had to micromanage GMH to death!
The only way you will buy a GM car in OZ these days is via an unofficial importer.

--- End quote ---
Yep, we were just as shocked as you Aussies when the Holden closedown was announced.
Like Oz, NZ was full of Holdens everywhere you looked and now we're seeing them gradually disappear from the roads to be replaced mainly with rice burners of one sort or another.

Next I see gubbermints targeting diesels as they have in Europe but with the population densities of most of Oz and NZ there's little reason for it other than to appease the greenies that are so driven by the principles of the Paris accord they can't even read or understand the fine print !  :horse:

--- End quote ---

Yes, they threw Vauxhall under the bus too; now it's owned by that pan-euro-atlantic-pacific shite-box maker Stellantis, and will no doubt be murdered and all remaining manufacturing facilities in the UK will be offshored.

AVGresponding:

--- Quote from: Specmaster on July 13, 2022, 07:45:24 am ---
--- Quote from: Cerebus on July 13, 2022, 12:32:08 am ---
--- Quote from: mansaxel on July 12, 2022, 10:03:06 pm ---
--- Quote from: TERRA Operative on July 12, 2022, 03:45:48 pm ---
But, nothing beats the sound of a supercharger. :D

--- End quote ---

The current tractor has a 5cyl TDi engine, and the turbo whine when it starts to make more power at a steady rpm (cruise control, meet uphill) is very, very addictive.

--- End quote ---

The Bimmer has a turbo but you wouldn't know it from the noise - there isn't any. In fact there's precious little engine noise at all, anything short of full throttle and all you hear is a gentle rumble from the tyres and suspension. All very civilised. Oddly I appreciate the quiet, despite spending the last 22 years driving a mid-engined car with the intakes and valve gear separated from my head by 10 inches and one thin steel engine access cover that with some carpet on it is basically the parcel shelf inside the cabin.

I am not a fan of turbo fitted engines in general, I've driven quite a few over the years and the laggy throttle response at low RPMs makes me very uncomfortable - if I'm going to have intake boosting give me a supercharger any day. Thankfully there's some clever cooperation goes on between the electric and petrol engines in the Bimmer with the electric motor filling in any gaps left by the turbo, and the only time you notice any turbo lag is on standing starts with hard acceleration. If I'd know it had a turbo before I'd driven it I'd have probably given it a miss based on past experience.

--- End quote ---
Hmm, that's odd, because my car also has a turbo and I can honestly say that I have not noticed any lag in it cutting in at all.

--- End quote ---

A "modern" (post mid 90s) roadgoing turbo car will have most of the lag tuned out, at the expense of peak power. The only real performance detriment you notice nowadays is the lack of torque at very low revs in a modern diesel turbo (don't bother telling me about how yours can set off at idle; I know, so can mine. But where's your idle at? Close to 1krpm I'll bet, not the 300-500rpm of an old-school diesel).




--- Quote from: Specmaster on July 13, 2022, 08:04:55 am ---No no, real men don't need to have a thumbing great V8 and all that racket that goes with them, you just need a decent Euro small engine designed with plenty of HP, decent sound muffling and reduce all that stupid gas guzzling to something more sensible for the sake of the planet and others. Chances are that a run, a smaller more sensible sized engined car will be just as quick or maybe quicker overall as your gas guzzler will need frequent fuel stops and the sensible car will be whizzing past the fuel pumps while the other will be sat there pouring gallon after of gallon of fuel down its neck and into the tank, increasing its weight again  :palm: :palm:

--- End quote ---

I do like the sound of an old-school NA V8, but those US ones are hilariously primitive, even the modern "advanced" ones aren't really; they're just a primitive V8 with fancy ancillaries to get the power up and emissions down(ish). My 20 year old, 4-cyl TT has 25% more valves than a typical modern US V8!




--- Quote from: Specmaster on July 13, 2022, 08:28:12 am ---
--- Quote from: bd139 on July 13, 2022, 08:06:59 am ---Yep. Rocking the 0.99L 3 cyl here  :-DD

Sounds like a V8 if you stick kangaroo juice in it.

--- End quote ---
Mines just a sensible 2 litre 4 cylinder, 125kW, producing 350Nm torque @1750 RPM with a 0-62mph of 8.6 seconds and frequently returns around 56 to 58 mpg on a run, that all the engine and power you need, especially on our roads.

--- End quote ---

Depends how much fun you want to have. 168kW (225bhp) is enough for quite a bit of fun in a small chassis, especially when you add in 4WD traction, but I have recently found myself wondering how much more I'd be prepared to risk with a remap and stock internals...

I gave up caring about mpg some time ago. It's fine if you live somewhere flat and only do motorway runs, but neither applies to me so I have to just shrug, accept the cost, and get on with it.

xrunner:
Working on a restoration marking label for the hp 3476A. Coming along still want to do more work on the red and black marks. I have restored most of the missing red lines and worked on missing black areas. Frankly when it's printed the correct size as I have it any flaws won't be noticed as it is now. The plan is to make the tan background a transparent area. I also have to obliterate all the markings I tried to restore with a sharpie. Maybe some will overlap OK.

The reason they all got rubbed off is the way hp made this side panel. It can be closed if you didn't realize it. When it slides "closed" two fuses pop out and hold it, and they are a pain in the arse to get pushed down again so the panel can be closed (or opened pick your word). You find yourself fumbling and pushing with all fingers and looking for tools to push the fuses down at the same time.

Meh - not the greatest example of hp engineering out there.  :-\

Navigation

[0] Message Index

[#] Next page

[*] Previous page

There was an error while thanking
Thanking...
Go to full version
Powered by SMFPacks Advanced Attachments Uploader Mod