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151

Omega General Help / Re: C30XEI/C30SE wont start

« on: 07 March 2023, 13:34:51 »

So.

Cleaned the relays and no victory.
Also changed some relays to make sure.

When ignition ON, there is 12V in the injector harness when voltmeter is from injector pin to battery negative terminal.

Well, that means the injectors are getting the supply they need, so the relay is OK. I'd be tempted to pull the fuel rail off complete with the injectors, and then crank it over. You should see squirts of fuel out of each injector as you crank it over (put your cigarette out first !). If for do see squirts of fuel, then chances are the fuel side of the equation is Ok, so your problem is likely ignition. No squirts of fuel, then it's a problem with the ECU not driving the injectors for some reason.

Or if you've got a spare injector, unplug the loom from one injector and connect it to your spare. As you crank it over you should be able to feel/hear the injector click.

I don't know what sort of injector drive the EVO500 has. Early C30SE's used single batch firing (all injectors fire at the same time). Later C30SE's had two banks of 3 batch fire (3 injectors all at the same time). And C36GET (Lotus) has individual control of all 6 (Sequential Fuel Injection). 

Anyway, a fault in the wiring between ECU and injectors will stop all the injectors working on the early C30SE's, or stop half the injectors on the later C30SE's, or stop one injector on the C36GET. So depending on what the EVO500 has will affect how many injectors stop working.

152

General Discussion Area / Re: That sonic boom yesterday....

« on: 07 March 2023, 13:18:44 »

Once the sonic boom has 'hit' you, you will continue to hear the jet as it heads away from you, and Mr Doppler says it will have a lower apparent frequency than a slower jet.

It appears the supersonic jet(s?) slowed down to subsonic as they crossed the M40 in the region of RAF Benson.

Ah, yes, doppler, that makes sense, thanks .


So doing a bit of schoolboy maths, and not taking into account scrambling and take off and getting up to full chat, but a Typhoon is capable of Mach2, so the Flatlands to Heathrow is possible in under 6 mins (again, assuming they were allowed and correct height to do Mach 2).  That's beyond pretty impressive.  I bet I can't get to my nearest curry house in town in 6 minutes, LOL.

I bet the pilots love getting the shout when they can give it large over land, that much be an experience.

Fast jets with supposed Mach2 capability are very rare. Yes they can do it 'clean' and at altitude, but once you hang fuel tanks and rockets on the wings the drag increases a lot then the max speed drops to more like Mach 1.5 above 20K feet. At sea level, very few fast jets can make much past Mach1 coz the air is so thick. It also burns shed loads of fuel, so when they arrive on the scene their loiter time isn't very good.

As for loving it, yes in training, low level high speed is popular. I've spoken to Tornado crews in Australia where they can do it over the Woomera ranges. They aren't usually cleared to go supersonic over land in the UK when intercepting foreign military threats (The Ruskies normally) because radars and other NATO countries see them coming, so they launch in plenty of time to intercept without requiring high speed dashes. Supersonic over land usually means a civil aircraft is not responsive. and on such a live QRA shout where there is a possibility (albeit remote) that you may be ordered to shoot down an airliner with 400 pax and crew, the feelings need to be much more professional considering what you may have to do when you get there.   

153

General Discussion Area / Re: That sonic boom yesterday....

« on: 06 March 2023, 16:59:40 »

Not certain in this case, but when supersonic is authorised over land it's sometimes for just for one of the two QRA jets. That allows one of the jets to get into position quickly, whilst the other continues at subsonic speeds and arrives a few minutes later, but with a lot more fuel remaining.  So it's possible you heard the sonic boom from one jet, and then the 'normal' noise from the second jet.

I did note that Brize threw a tanker up pretty quickly when the jets were scrambled

They always launch the "TANSOR" for a live QRA shout, assuming there isn't already a tanker airborne on training mission which can be diverted for the higher priority mission. They usually launch TANSOR for a practice shout too. It's quite often ZZ336, which is the specially painted "Boris 1" jet, because that sits on the ground waiting for its next VIP tasking, and so is 'available' for QRA shouts, whereas the others could be scheduled to go to Cyprus, the Falklands, or wherever.

Standard QRA procedure is to launch two Typhoons from either Coningsby (QRA-South) or Lossiemouth (QRA-North) and one Tanker (Tansor) from Brize. The tanker heads off to a suitable overwater refuelling area waiting for the Typhoons to show up. The two Typhoons then take turns shadowing the threat whilst the other goes off to the tanker for a top up. A single tanker can keep two Typhoons in the air for in excess of 10 hours if required.

Once the threat is over one Typhoon lands to be re-armed, serviced, refuelled, flush the loos, reload the egg sarnies etc, whilst the other stays airborne and alert with the tanker. Once the first jet is ready to resume QRA alert in it's shelter the second jet lands and is serviced in turn. This way there is always at least one armed jet ready to deal with a second 'threat' should there be two in close succession.

Finally, once the two QRA jets are back in their shelters and ready to go again if required, the Tanker pootles back to Brize for tea and medals.

The RAF/MOD never make it clear what the procedure is if more than 4 fighters (2 in Scotland, 2 in Lincolnsausageshire) are needed. Supposition is that the first 4 QRA jets are available in 15 minutes (typically more like 5 minutes) and another 4 can be generated in 30 minutes-1 hour. How that works in reality hasn't been tested recently though AFAIK. Can't see there being 8 pilots on duty on a bank holiday Sunday for instance.

154

General Discussion Area / Re: That sonic boom yesterday....

« on: 06 March 2023, 15:04:11 »

A Canadair Dash8 on a delivery flight to darkest Africa with about 3 fuel stops apparently...

Large enough to be annoying but not large enough to make a big mess.

Plenty big enough to cause significant casualties if you crash it into (say) Brent cross, or a packed football/rugby stadium. They could also improve LHR T5 by crashing into and demolishing it. During the Olympics we had QRA Typhoons intercepting Robinson R22 helicopters down here when they encroached on the sailing events in Portland harbour.

Ultimatley it doesn't matter if you're an A380 or a R22. You follow the rules, and if intercepted do what the fighters say, otherwise your day will get worse.

Not disputing that, but it was probably being flown by the end user rather than a delivery crew from Canada, and whilst the rules should be the same globally, the interpretation and procedures can be somewhat variable.

However you spin it, one of those crashing, targeted or otherwise, is going to be much less of an event than a Korean Air Cargo 747 or similar. Like comparing a coach crash with a passenger train crash.

Nowhere to really shoot it down around Lundun either.

The issue here is that it should have been going to Southend, which is east of London, and yet it somehow ended up west of London. Thats a big navigation error, and combined with loss of radio contact with ATC was always going end up with fighters on your tail. It was given the infamous "If you do not comply I am instructed by His Majesty's Government to shoot you down" command twice by the Typhoons on VHF Guard (121.5).

If you believe that it would not have been shot down due to it's location close to London, I'm afraid you're wrong. Perhaps pre 9/11, but not now. Attempting to go direct from LHR to Southend would take them right OTT central London. As it was they were ordered to turn north, and they passed over Northolt and Luton to Stansted.

155

General Discussion Area / Re: That sonic boom yesterday....

« on: 06 March 2023, 14:53:33 »

That's because this time they were quite low.

Thanks for the detailed explanation , much appreciated.

Why was the sound of the jets (assuming that was what I heard when I went out, after the sonic boom) sounding slow moving?  I've been up the side of big hills when Typhoons buzz through the valley, as the noise "moves" fast.  The noise of these jets sounded like it wasn't "moving" that fast across the sky....    ....unless they were so far in the distance by then, the noise was just coming from the same direction?

Not certain in this case, but when supersonic is authorised over land it's sometimes for just for one of the two QRA jets. That allows one of the jets to get into position quickly, whilst the other continues at subsonic speeds and arrives a few minutes later, but with a lot more fuel remaining.  So it's possible you heard the sonic boom from one jet, and then the 'normal' noise from the second jet.

Once the sonic boom has 'hit' you, you will continue to hear the jet as it heads away from you, and Mr Doppler says it will have a lower apparent frequency than a slower jet.

It appears the supersonic jet(s?) slowed down to subsonic as they crossed the M40 in the region of RAF Benson.

156

General Discussion Area / Re: That sonic boom yesterday....

« on: 06 March 2023, 14:42:59 »

A Canadair Dash8 on a delivery flight to darkest Africa with about 3 fuel stops apparently...

Large enough to be annoying but not large enough to make a big mess.

Plenty big enough to cause significant casualties if you crash it into (say) Brent cross, or a packed football/rugby stadium. They could also improve LHR T5 by crashing into and demolishing it. During the Olympics we had QRA Typhoons intercepting Robinson R22 helicopters down here when they encroached on the sailing events in Portland harbour.

Ultimatley it doesn't matter if you're an A380 or a R22. You follow the rules, and if intercepted do what the fighters say, otherwise your day will get worse.

157

General Discussion Area / Re: That sonic boom yesterday....

« on: 06 March 2023, 14:09:12 »

……….
Honestly, that boom on Saturday was the loudest sonic boom I've ever heard, and the house vibrated, like something heavy had hit it.  ………

My daughter said the same, although she’s in Bicester so not that far from you.

That's because this time they were quite low. Normally when they 'dash' from Coningsby to the south west, they climb to 41,000ft and then rip along over Oxford and Bristol before descending to intercept whatever it is. There isn't any commercial traffic up at FL410 so they get direct routing from air traffic control. Sonic booms at that altitude are usually like a loud rumble of thunder.

This time the 'intruder' had lost radio contact, and wasn't following it's flight plan. It was supposed to be going from Iceland to Southend, but deviated and went over Oxford and down towards Heathrow. The two Typhoons (Rigid 11 & 12) launched at about 13:05, and headed south, intercepting the 'intruder' just west of Heathrow. No way for ATC to clear the Typhoons through the busy London airspace and get them to climb to FL410 and then back down to FL140, so they stayed at medium altitude - which results in a very loud 'crack' of a sonic boom.

There is going to be a fuss about this one. Lost radio contact, then deviated from flight plan, and apparantly initially refused to follow instructions from the pilots of the QRA jets (to divert to Stansted) and tried to continue to Southend. Post 9/11 that's one way to get yourself shot down.

158

Omega General Help / Re: C30XEI/C30SE wont start

« on: 06 March 2023, 13:49:28 »

Where i can find relay for injectors?

It is Omega Evolution 500.

Assuming the EVO500 is the same as a normal C30SE Omega A, then it'll be in the engine bay, left hand side (same side as the steering wheel on a LHD car), just behind the suspension turret. There will be 4 or 5 relays and a bunch of fuses there.

It's possible the relay is activated by an alarm/immobiliser system. Have you got all the correct alarm fobs?

159

Omega General Help / Re: C30XEI/C30SE wont start

« on: 06 March 2023, 13:37:17 »

One end of the injector should be at battery voltage - 12V ish - when measured to chassis/battery negative terminal. If it isn't then either the injector relay has packed up, or a fuse is blown.

The ECU grounds the other end of the injector to operate them - but only for a few miliseconds at a time. You won't be able to measure 12V across the injector plug/socket itself with a voltmeter.

What sort of car are we talking about since you mention C30SE? Is it Carlton/Omega A/Senator?

160

General Car Chat / Re: M5

« on: 03 March 2023, 10:11:45 »

M5 closed all day yesterday at Bristol. Apparantly a tipper lorry's tipper bit lifted up and smashed into one of the overhead speed camera gantries.

161

General Car Chat / Re: M5

« on: 01 March 2023, 11:05:29 »

I'm loathed to use the M5 south of Brizzol at all. In the summer there are upside down tin tents all over the place and rozzers hiding on every bridge. At nights the road is usually closed somewhere for no apparent reason - often a "Police incident" or "Emergency Road Works".
………….

I’ve had some pretty good early hours (midnight onwards) runs down the M5 to South Devon and Cornwall. My Sat Nav always appears to wildly overestimate my ETA at night for some reason, sometimes by well over an hour. Not sure why that is as it’s fine in the daytime. 
I mostly travel at night as I got fed up with the daytime motorway ‘Phantom stops’, where you get caught in a two mile tailback with stop/start traffic, only for the traffic to suddenly take off at normal speed again with no obvious clue to why the tailback occurred in the first place. 

If you're travelling from Brizzol to Exeter then there isn't really an alternative - just keep traffic alerts on and bail out at the first sign of aggro. But Brizzol to Yeovil there are two routes - M5 to Jct 23 then cross country, or avoid the M5 and straight down the A37. If I can get through Brizzol before 7am, or after 6pm, then A37 every time.

London to Exeter - I would always use A303/A30 rather than M4-M5.

Oxford to Exeter is a tricky one. A34 is the worst road I use regularly - although the junction with the A303 is a hoot if you can get a free run at it.

162

General Discussion Area / Re: blaupunkt san diego dj

« on: 27 February 2023, 14:39:40 »

Ok, found the pdf, and it does cover the San Diego SQR48 - dunno if that's different to the DJ . Anyhow PM me your EMAIL address and I'll fire it over.

My guess at the gritty/distorted noise would be mechanical alignment between the tape heads and the tape itself (assuming everything else works Ok and it's not just a gritty pot)

163

General Discussion Area / Re: blaupunkt san diego dj

« on: 27 February 2023, 13:30:22 »

Do you have circuit diagrams for it?

During Covid Lockdown I did manage to repair a few Blaupunkt Memphis and CDP09 CD players, and managed to get the circuit diagrams for them. I can possibly dig them out and email them to you if it would help. Doubt they'll be exactly the same as the San Diego, but wouldn't surprise me if the chipsets were the same/similar.

The other option would be to talk to DaveDND down in Paington. Used to be a member here, but haven't seen him pop up for a while.

164

General Car Chat / Re: M5

« on: 24 February 2023, 18:04:19 »

I find that the great thing about being retired is I don't give a damn how iong any journey takes, time is no longer a matter, the day I finished work I gave up wearing a watch as I am no longer answerable to anybody.

Yes, Mick, but the old bladder can make you appreciate a swift journey 

Sad but true. 

.   


It's very strange that you mentioned that, long journeys present no problems, but if I pop into town for an hour or so by the time I return home I'm busting for a pee..😄

We call that "The Queen Camel's".

Queen Camel is a small village on the road from the A303 into Yeovil - about 5 miles from home. The number of times we've been on the way home from a trip abroad, and we've got to Queen Camel at midnight with a bladder (or worse bowel) ready to burst is incalculable.

165

General Car Chat / Re: M5

« on: 24 February 2023, 16:55:36 »

I'm loathed to use the M5 south of Brizzol at all. In the summer there are upside down tin tents all over the place and rozzers hiding on every bridge. At nights the road is usually closed somewhere for no apparent reason - often a "Police incident" or "Emergency Road Works".

If you know what you're doing you can avoid the heavy traffic on the A303. Plenty of local roads - but for locals only 

Sod the Grockles

Hint #1. As you go down the hill past Boscombe Down/Solstace Park Services look into the distance sort of straight ahead. You can see the A303 climbing up the hill in the distance away from the Amesbury/Countess Roundabout. If it's chokka with brake lights bail out into Solstace Services, and then make your way north to Bulford. Once there, turn left (west) onto The Packway, and then through Larkhill Camp. Once you get to Rolleston Camp you can turn left and head back down the A360 to rejoin the A303 at the Longbarrow Roundabout. That can easily save you 50 mins on a busy bank holiday Friday/Monday.

If you stay on the A303 past the Countess roundabout then you are doomed if it's busy - there is nowhere to turn around and it  can take an hour to get past Stonehenge to Longbarrow.