AIR Pump prototype failure




I guess it's just something to get used to.
My NEW advice toOEM AIR pump owners; USE THE DAMNED ELIMINATOR!!!
:lol:


the rear of the unit where they have the circular disk and build it up then
lathe it to act as a keeper, so bearing will be again flush with inside of
that area which by the way DID perfectly line up pulley on version 2! Also
he's going to look at what he can do to rectify the new pulley wobble (Which
I asked him to run up to speed to check it all) ALSO, I mentioned the heat
(Very hot) of the shaft even after 1/2hr of shutdown which I checked in the
darkness awaiting tow truck. He'll drill some holes in the front and back
plate to help cooling (Which is what I suggested on prototype 1 before I
picked it up) as he said tho; theres no way you can drip feed oil onto a
sealed bearing. Yes, since I've gone THIS far with it, I'll see if third
time lucky is true (Or, total attempt number FIVE if you coun't S'Raynut's two! (If not, I'll be meaning it when next time - as I did
this time when I got there, I tell him to assume the position!)
My mate reckons they should have used stainless steel, not axle steel for the
shaft tho...


Chris, If I'm late to the next club meeting, walk in with a smirk & have slightly greasy hands, and when you go to leave, you miraculously find your fan belt very VERY slack - It wasn't me!!! :lol:
I guess it's just something to get used to.
My NEW advice toOEM AIR pump owners; USE THE DAMNED ELIMINATOR!!!
:lol:
I am in no way offended, and mean no offence. I think the one I made looks a bit "poopie", in fact it was originally a bit of a prototype, until I came up with something better.
My point is though, that functionality is paramount, and it has held up so well that I took it off, had it powdercoated, and moved on to the next job.
Cheers
John
(PS - shame about the rugby :rofl: :lolg: )
damm you smacko
Yes !!!!!! ........I feel better.
I have my pump being re-engineered locally here in Cairns. I've given up posting it 1000 miles south to be butchered any more.
Thanks to smacko's last minute road testing of his latest 'bodgy' repair yesterday, we should have all possibilities covered.
How hard can it be to make the pump freewheeling ? If you can do it with bits of mechano (The Eliminator) surely using the existing pump and bracket would be a breeze.
My advice would be for others not to be put off by our experience. If an engineering firm has 5 failures out of 5, please don't judge the idea by the results so far.
I'm sure it's already been done succesfully many times, anyone care to chip in with their results ?
Hey Britvette, Re the Rugby England V Australia last Sat night in Sydney -
it was a hard fought game, I hate losing but the English side appeared more disciplined the entire game - well done.
Shame about the Cricket, Tennis, Hockey, Running, Swimming, Rugby League, Cycling etc etc ...didn't we even win the world darts last year ?
he he he
S'nut
The Best of Corvette for Corvette Enthusiasts
he he he
S'nut


mate, I realised you weren't really offended and nor was I, OK? :seeya
I AGREE functionallity BEFORE visual appeal. Who would have thought 5/5 attempts from an engineer would STILL not come up trumps?!?!!
Here's hoping that version SIX (Mine) will be ok. I WILL be looking for an eliminator tho, to keep on hand, such is my faith in this project now.
As S'Raynut said to me, it's not rocket science!!!
Just had a thought (Oh God, here he goes again!); the eliminators would be more appealing if they could somehow be mounted UNDER the front of engine, rather than sitting up like they do...ANYONE?


damm you smacko
Lets see how your THIRD version of pump goes...be interesting to see if it's a generic problem with the idea or if we can pidgeon-hole it as a lack of foresight with that particular firm...
Only reason I recommended them in the first place, is that they HAVE done brilliant work for me in the past, as well as for a friend. My previous encounter with them was when they machined (In this VERY expensive unit such as used on Formula 1 engines) my old Honda (Can I say that word here?) M/cycle's head; ABSOLUTELY BRILLIANT job!!! Then again, I guess in hindsight, that'd be more a machinery kudos than the operator, who with a bit of basic training could know how to use it...
Anyway, keep everyone informed how it goes (We'd best keep this subject open for a few thousand miles!).
MEANTIME, I'm considering contacting my insurer and asking about a reduction in premium due to car being off the road for extended periods of time!! :jester
Too many other probs to sort out at this stage.
John


Pity one couldn't just get a shorter pulley and have it all work!!
:cheers:
I looked into re-routing the belt before deciding to engineer the pump and it's very difficult to get a fair amount of turn on all the remaining pulleys.
Allied bearings have belts of different sizes and the part number corresponds to the length in mm which is handy - but I hope my pump will be fixed now - I'm going to pick it up in 30 mins.
Britvette - do you mean you drink Fosters ? You're a crazy mixed up kid, living in UK, driving an American car and drinking Aussie beer. Hang on, maybe you're on to something.
S'nut
[Modified by Stingraynut, 11:43 AM 11/25/2003]
Britvette - do you mean you drink Fosters ? You're a crazy mixed up kid, living in UK, driving an American car and drinking Aussie beer. Hang on, maybe you're on to something.
[Modified by Stingraynut, 11:43 AM 11/25/2003]
Back to the pump - I think one of your problems is getting the thing to run square, to the belt, if it were truly at a rihgt angle to the belt there would be no sideload.
I think this is important whatever the design of the eliminator :confused:


I DID drive the Vette to work today but the stress of wondering if/when it'll fail AGAIN has left me tense instead of enjoying driving it. Popped the hood at work and found a nice ring of brownish dust at rear of unit, which almost definately says to me now that the shaft is NOT acurately aligned between the two bearings - prob what caused the first one to fail as lateral force is slowly grinding away shaft (Which is axle steel now)
:cry
:lol:
i agree!! :iagree:
now if you need one check here: http://members.shaw.ca/vettek/


Drew a line across the rear of unit, across bearings as shown(hopefully).
Went down to local store and back (About 1 mile return trip) What you can CLEARLY see is that shaft IS turning inside of inner bearing surface. I have just removed pump for the zillionth time, and it DOES turn much more freely than when I put it on AND you can even see shaft moving within bearing!!! AND it sounds like a rusty hinge on a gate.
No more chances, I'm asking the 'engineer' for my money back in the morning (I won't hold my breath) :mad :mad :mad :mad :mad :mad







