diesel engine microlight pendulum

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Macro
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by Macro » 17/05/10, 15:22

Christophe wrote:: Shock: : Shock: : Shock:

You will make some bikers scream there !! Do not mix everything ... yes sometimes the ingenes are fun (there is much worse than the CX, I think the apotheosis is the NR750!) But in the car too there have been tests + or - doubtful!

I would like to see the life of the motors of cars if they turned at the same average speeds as the motorcycles ... and with the same use (style to pull in cold like some weak motorcyclists do it), the same specific power and mass power ...

Do you know the life of a ferrari's engine? : Cheesy: : Cheesy:

Car engines are not "designed" to exceed 4 to 5000 hours of operation (bearings for example). Motorcycles ca must be 1 or 2000 hours less ... but the forces are not the same, when we double the RPMs have multiplied by 4 the internal forces of the engine ...

So if you want a reliable engine, go to the industrial engine ... but here an industrial diesel engine of 20 hp weighs 100 kg! Exit aviation!

Macro wrote:Even a 1.4D PSA engine that is eaten 100% pig fat will be more reliable than the best motorcycle engine ...


So I doubt it !! Another one who hasn't heard of the reliability of the VFR 750 ... : Mrgreen:


4 to 5000 hours of operation ... at 60km / h of average on a lambda body it's 240 to 300km ...
I currently drive with an alfa 156 1.9jtd 110cv which has always been driven by a French biker on French and Swiss German motorways ... It has 256 km with its fully original engine ...

Christophe because of their design, the auto engines will never reach the speed of the motorcycles (although I have seen some CX engines which took 10 rpm) but I can guarantee you that a properly cooled auto engine lubricated it holds. ..I was providing assistance for a guy who was making his rally debut on a 000GTI golf ironed with carburetors ... The car had 1 km and had only done Rally since it left the dealership. ..It was on it was only about 1.6hp..But good tapped in each time it was started ...
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by Macro » 17/05/10, 15:32

Christophe wrote:
Do you know the life of a ferrari's engine? : Cheesy: : Cheesy:



I know two ferrari drivers ...
One of them has a 250GTO which has already say more than one counter revolution (5 digits) without major intervention on the engine (the brave man has 70 pins)

The other had 3 machines an F40 an F50 and his last little one an F60 Enzo ...

The F50 suffered from an obvious lack of reliability (robotized gearbox and turbos that were 20 km) it's been about 000 or 5 years that it rolls with the f6 (not every day..only on Sunday ... The week it has a master tipper : Mrgreen: ) he does not complain about reliability
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by Christophe » 17/05/10, 15:33

The debate is interesting but completely HS ....

An engine (motorcycle, car ... kif kif) wears out 4 to 5 times more in town (per km) than on road and highway. However 3/4 of the km (over the life of the vehicle) of current cars are made in town or peri-urban! Exit the highway then! We come back to the problem of regime changes!

I was recently in Paris, stuck on the "grand Périf", the engine of a Parisian car which has 200 km must be much more worn than that of a "country" car ...

When I talk about wear and tear, these are obviously not the wearing parts but the internal parts of the engines (bearing, bearings, distribution ...) changeable certainly but expensive for mechanics who still dare to open the engines (track d 'extinction).

Here is an interesting question: why don't we do (more?) valve play on cars?
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by Macro » 17/05/10, 15:36

Christophe wrote:Here is an interesting question: why don't we do (more?) valve play on cars?


Simply because valve clearances have been automatic catching since the 80s : Cheesy:

Some cars fitted with VM engines before 1994 still needed this adjustment, which has now disappeared ...
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by Christophe » 17/05/10, 15:38

Ok then corrolaire: pkoi is there no system of automatic catching up of games on motorcycle engines? : Shock:
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by Macro » 17/05/10, 15:46

Christophe wrote:Ok then corrolaire: pkoi is there no system of automatic catching up of games on motorcycle engines? : Shock:


Pasch did not choose you the right : Cheesy:

The 600KLR of my brother had hydraulic push-button valves like any car with a camshaft at the head of the 80s / 90s ... It did not prevent him from being a shit unable to cross 30km without exploding everything ...
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by Christophe » 17/05/10, 15:55

Pfff ... easy! I may have no automatic catching up but I at least I'm not gunning my engines in 30km, it's family it looks like? : Cheesy:

Rapeseed oil is for your diesel tank, not the oil pan of your motorcycles! : Lol: : Lol:

ps: hydraulic valve lifters are not "eternal" either: http://passiongolfgti.com/article.php?id_article=265
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by Christophe » 17/05/10, 16:14

An article to refocus and support the idea of ​​a 2-stroke injection in ULM use: https://www.econologie.com/forums/le-moteur- ... t9677.html
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by Other » 17/05/10, 17:24

Hello

Here is an interesting question: why don't we do (more?) Valve play on cars?



American cars hydraulic overtaking has been widespread for a very long time, but it's slow engines.
the engine at high speed 8000 and 10000 rpm do not mix well with the hydraulic lifters (lifters)

Andre
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by Christophe » 17/05/10, 17:27

Here I have my answer (I suspected it was a bit related to the RPM). Thank you André.

Strange does not prevent that Honda which developed the 1st variable distribution on the market VTEC, did not find a technological trick to this problem ...
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