Talk:Antoinette 8V

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Conflicting values for engine horsepower...

There seem to be two conflicting values for the horsepower of the Antoinette V8 described in this article. Some sources do agree with the 67 hp (50 kW) value given here, but note that this corresponds to 50 kilowatts. Other sources, particularly ones dating from the period of the engine, list it as a 50 horsepower engine (e.g. Flight, see [1] and [2]), with occasional descriptions of 55 or 60 horsepower. (The "RAC horsepower" for the engine is 60, but this is a rule-of-thumb estimate based on engine dimensions, not a true power measurement.) Even French sources list this engine as "50 chevaux" ([3]), using the French expression for horsepower; while a modern person might expect a French engine to list its power in kilowatts, it was still customary in Europe to use horsepower for automobile and aircraft engines when this engine was made. I can't find any sources from that era giving a power of either 67 horsepower or 50 kilowatts.

The blog entry listed in "External links" ([4]) makes the statement,

Some sources list the larger bore engines as producing 50 hp (37 kW) and 100 hp (75 kW) respectively. However, other sources give the outputs as 67 hp (50 kW) and 134 hp (100 kW). Note that the kW values (50 and 100) of the second figures match the hp values of the first figures. Possibly a printing error, the higher power figures have been found in fairly early publications and have been repeated a number of times over the years.

I don't know just how early "fairly early publications" are supposed to be, but since sources from around 1910 are consistent in listing "50 hp", I personally agree that "50 kW" is likely to be an error, perhaps a printing error, perhaps a mistaken assumption that a French-built engine's rating must be in kW. I will change the figure here accordingly.

--Colin Douglas Howell (talk) 09:02, 21 June 2018 (UTC)[reply]

not really fuel injection

The article credits the engine as an early or perhaps first example of a fuel injected engine, but this seems to be an error. If I correctly understand how Levavasseur's system worked, a pump fed fuel to a small resevoir in the head, from which it was drawn thru a tiny passage into the intake port by engine vaccuum on the intake stroke. This is far more analogous to a carburator (where fuel is drawn thru a jet by engine vaccuum) than to any form of fuel injection (where fuel is injected into the intake or cylinder under pressure).

It's also definately not "manifold injection" since the engine has no intake manifold, so I'll remove that from the article. — Preceding unsigned comment added by 2601:589:300:CA70:B0DA:6E79:8CEF:8967 (talk) 22:29, 26 July 2020 (UTC)[reply]