Unfortunately I am a Physics type Bolt (!), my 'resonant' comment being based on the fact the air 'flow' is actually a series of high-frequency pulses...
The 'spring steel' the reed is made of must be particularly flexible though ! ...
Yes, it is quite easy to fall into the trap that P38s are 'the result of logical thoughts'.... (albeit tinged only by all the random cr@p within !) ?
Interesting results Bolt !
Maybe with the short srtip on top this then actually interferes (ie. reduces) with the flow through the inlet hole instead (?)
Also I think the long strip is flexible enough to block the hole (?)
It is possible that the resonant frequency of the reed plays a part in all this too
Just goes to show that 'counter-intuative sometimes really works (better)' too !?
That's what I find a little strange Richard, if they bothered to put a stop plate on the outlet then why not the inlet too ? (if there is space enough)
Guessing we won't know until someone reverses these strips and runs it for a while either; With the short strip on top we might get twice the output but the compressor fails in half the time ?? (and/but having half a long strip drop off into the cylinder could also rapidly do some damage within too...)
I am intrigued Bolt..... do let us know !
As you indicate yourself in #6 Bolt the short strip should be added to act as a 'damper' to restict the oscillations of the longer strip (?)
Putting the short piece on top may increase the airflow but also reduce the working life of the long strip (?)
In short placed on top it should reduce the chances of metal fatigue in the longer strip... so why isn't it indeed ?.......
EDIT: Did some research Google Reed Valve Stop Plate for details..... as that seems essentially the basic function of the shorter piece here,
or it could/should be (?)
Or perhaps the short piece being on top could cause the longer strip to fail sooner at their junction (?)....
(Although now I am wondering why it is there at all if it is/was just a spacer..!)
Hi Symes, just read your interchange with 'sully' on rr.net; What an idiot ... Not sure what his problem is but it always surprises me on Forums when folks ask such questions, ie "how can I make my car illegal/dangerous ?".... and then they don't like/take the sensible advice they are given !
Yes, at $40 I assumed it was a (cheap) clone of something, but I have now ordered one anyway and if I can get it to do something useful will let you all know ! l also suspect it will be a PITA to set it up, and at best will give the same results as a (cheap) Code Reader too (?) We will see.
Their ISO9141 reference implies it will deal with earlier P38 systems (eg. SRS) albeit on a diiferent pinout to standard OBD arrangement.
This is the Legit stuff:
http://www.drewtech.com/products/mongoose.html
..but which does not actually list JLR in their "Sell Sheet" mentioned !
However, and also for the more serious dabblers only...
https://trialsofarrsowner.wordpress.com/part-5-what-can-i-use-to-get-the-suspension-fault-information/
ie. JLR changed their protocols..... !
Whilst I know all on here are NANO officionados has anyone dabbled/tried this on our beasts ?
Handles the crucial ISO9141 protocol. hence my question.....
Interesting tale Clive; There are all kinds of odd (and persistent) adhesives that are used with cars of course, and it irritated me in particular when something was stuck on plastic/painted/etc surfaces, meaning it was not possible to use a 'standard solvent' (eg. thinners/acetone/etc) to remove it - or it will affect that surface detrimentally... and turps/meths/white spirit seemed ineffective too. Yes, cars get hot and stuff bakes on and/or melts.....
On my travels I found something I can recommend though: "Goo Gone" (and I promise you I am not making that name up). Bit pricey though £10/8oz -and it whiffs a bit for a while too- but it has proved invaluable to me over the years.. it even gets chewing gum out off carpets/kid;s hair !! Not quite sure what it is based on (although I was intrigued enough to read the Patent) and it takes some time to work, but it does work ! Worth a try....
No doubt others have their own 'solutions' too !?
If you are using a pint of coolant a week if it was the HG then you would expect to see the head/valves and piston with that 'steam cleaned' look....
Did you do a pressure check before you took the head off Harv ?
That's a great idea Marty but June may be a tad premature (as early removal of Lockdown could trigger a second wave)...
Whilst have to admit I have stuff to do on mine I am going to use the 'stay' on MOTs to do it later too !
September... maybe ?
Simply a matter of Land mass / Population size Kultur; The US is 40 times the area of the UK but only 5 times the Population...
In some parts of the US I have driven for an hour or so in the without actually seeing another vehicle (and not just on trails) !
That's quite a saga Marty, and in fact you could probably make your own musical out of it; "A Kiwi in... er....well every-bloody-where" ?
Quite a schedule too, and like others said above I just can't see the show happening again in May/June either.... as you may know
the West End (and lots more) is basically closed here 'until further notice'.
But you are back and reading this and the news now of course.
Tough times ahead for all; Take care / Stay safe everyone (and AVOID Ibuprofen)** !
https://www.flattenthecurve.com/
**EDIT: In case you are unaware, Ibuprofen can accelerate the effects of COVID-19.
https://www.thelancet.com/journals/lanres/article/PIIS2213-2600(20)30116-8/fulltext
This may have been an issue in Italy: Take paracetamol / aspirin / diclofenac instead
(Interesting story Richard, indeed the "just throw parts at it" methodology rarely works yet folks still do it - and main stealers actively encourage it...)
Hi Leo, Not sure if you resolved your blue/green dot alarm issue but searches on " YWY500170 P38 receiver " etc will reveal more evil.....
and you may well have also/probably realised have the Green Oval/Evil folks want c.£350 from us to resolve their bad design....
mad-as: " i have also wondered if the original side steps with all the plastic molding hold dirt and go rusty?"
Yes to both, but easy enough to repair with some 32mm steel square section; Rubber lifts off so you can replace rusted sections and weld it up....
Bolts to chassis with captive nuts though (seized solid - of course - bad design - so best to drill out and use a single bolt right through)
Unfortunately the step spoils the looks of the truck but kids etc find it useful getting in/out....
Also acts as a 'bump guard' in car parks (although I am well past caring about that now !)
Guessing he still means the 'DB9F' (Serial) connector Richard (?)
John: Not sure where your CD/Cable/adapter is from but see e-bay item 113941252453 as it should be the same (?)
-the cable 'simply' goes from ODB to DB9F which plugs into the (blue) Serial/USB adapter/cable.
Yes, it can all be a bit 'hit and miss' as far as the PC assigning a USB for the comms (ie. the adapter) is concerned......
" Surely it must be possible to buy a cable that is OBD to USB? "
No, it isn't... As already indicated OBD uses 12V - USB uses 5V.
The software expects (ie. was written) for a Serial Interface. If you don't have one on your PC you have to use a Serial/USB adaptor as per the link etc also posted in #28.
"The French did me for 89 kph in an 80 zone and the fine is €360!!" - Sacre Bleu OldShep that's dire.....
Whilst I have been stopped a few times now in E. Europe on a whim with a made-up fine for a made-up 'offence' it appeared to be 'negotiable'
(and the locals thought it perfectly fine for the traffic cops to do this too..)
> Interestingly, these two topics are very much linked. The ID card proposal was seen as a way to control illegal immigration, back in the days of the Home Office stacking applications in the basement and turning a blind eye. I'd argue that the seeds of the discontent that eventually resulted in the Brexit Referendum started to germinate about that time.
Good Grief (for real) Morat, did not see your post before I posted mine but we actually agree on something... It had to happen eventually !?
One of the reasons ID Cards were rejected of course was cost... £600M; ie £10 each: Considering the actual 'costs' to the Uk (and the savings made in other ways) it would have been money well spent !
Well I suspect 'the control of our borders' is a semi-metaphorical but broader phrase Richard: It all stems from the problem that emerged ~ten years ago of course - due the disparity between official and unofficial migration (again not helped much by https://en.wikipedia.org/wiki/Brodie_Clark -He got a gong in 2010 and then 'resigned' in 2011 because of extremely lax controls.... You may recall that the numbers applying for a NI number were almost three times the offical immigration figures. The idea of an ID card for the UK was first seriously mooted in 2006 but rejected in 2010 too...
Anyway my comments about biometrics were partly based on my discussions with plod, who waste a huge amount of time dealing with the fact that drivers they stop don't have a licence, or they have 'borrowed' one..... Similarly test fraud: https://www.bbc.co.uk/news/uk-38645864 These problems could be eliminated by the Test Centre taking biometrics from those bing tested of course. In the US they take the photo/fingerprint in the Tesing Office too..
IMO we should be required to carry our Driving Licences and/or ID in the UK too of course. I would not want to carry my Passport with me everywhere. Incidentally I first encountered smart ID cards in Spain 20 years ago that also contain any 'special' medical data (conditions/medications) in case they are needed by ambulance folks attending an incident/accident who have the card readers for this purpose etc. "Human Rights" activists seem to get quite twitchy about al this obviously.... and I had better stop there before I start on unregulated CCTV Monitoring, Internet Tracking etc and mandatory/statutory DNA testing for all !
The ending of the "pet passport" scheme is rather sad, especially as they were not allowed to vote.... ! However I suspected 'they' were all "barking up the wrong tree" with numerous 'now-we-are-leaving-the-EU issues' too (Sorry !)
Fair points Richard and thanks for the link: Yes, the French are really keen on theri on-the-spot-fines of course (although I have had a few similar situations in countries where easy-to-spot rental cars (and unnofficial "tourist taxes" - IMO) have been involved..!
Think you are also right as far as odd/random vehicle checks at Dover etc are concerned - and that's what helped us to get into this mess in the first case of course... (For those interested google "Brodie Clark" and why he was pensioned off). Being (more) controversial it is about time we also had biometrics on our Driving Licences too; eg. Photo/fingerprint taken on issue, like in the US (?)