Question on Magnum XL Series 91 4-Stroke

Walter Colby

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Mar 16, 2001, 4:26:42 PM3/16/01

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I am looking for the Horsepower (B.H.P.) rating on the XL .91 RFS 4-Stroke
from Magnum engines.

I'm torn between the O.S. .91 FX (2cy) & the Magnum .91 (4cy) to fly a F-20
Tiger shark.

All opinions accepted,

Thank you,
Walter Colby
wco...@gte.net
http://www.firstworld.net/~wcolby/

speedy

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Mar 16, 2001, 9:16:55 PM3/16/01

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On Fri, 16 Mar 2001 21:26:42 GMT, "Walter Colby" <wco...@gte.net>
wrote:
I have an XL91, and the manual lists no bhp ratings....nor does the
primary website http://www.hobbypeople.net/gallery/210970.htm

Ed Cregger

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Mar 17, 2001, 1:29:06 AM3/17/01

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I really love the sound of a four-stroke, but in this
application I would have to go with the OS.91FX. It is
almost certainly more powerful with the appropriate sized
prop and should be considerably lighter and more compact.
--
Ed Cregger, NM2K
nuke6...@vei.net

*Remove the "nuke" for correct email address

"speedy" <no...@given.net> wrote in message
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Jan-Allard Slurink

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Mar 17, 2001, 5:17:05 AM3/17/01

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http://www.jamara.de/produkte/motoren/magnum91fs/magnum91fs_text.htm

It's in German, but you'll understand it. If not, ask me and I'll translate.

jas

"Walter Colby" <wco...@gte.net> wrote in message
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Walter Colby

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Mar 17, 2001, 6:14:05 PM3/17/01

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You are correct, it is in German.
I need a translator.
Can you tell me if the page gives the BHP of the engine ?

Thank you,
Walter Colby
wco...@gte.net
http://www.firstworld.net/~wcolby/

"Jan-Allard Slurink" <fake.jaslurink@morefake_bigfoot.kom> wrote in message
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Jim Archer

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Mar 17, 2001, 6:28:03 PM3/17/01

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It's right there on the page that the link
(http://www.jamara.de/produkte/motoren/magnum91fs/magnum91fs_text.htm) goes
to.

Leistung ca.: 1,3KW / 1,77PS.
(PS is effectively the same as BHP - so approx.1,77 BHP is claimed)

--
Best regards

Jim Archer, Norwich, UK
http://www.jimarcher.cwc.net

Walter Colby <wco...@gte.net> wrote in message

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Walter Colby

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Mar 17, 2001, 10:56:50 PM3/17/01

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Thank you for the translation, you are a gentleman & a scholar (obviously )

Thanks again,
Walter Colby
http://www.firstworld.net/~wcolby/
http://www.kntv.com

"Jim Archer" <jima...@cwcom.net> wrote in message
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Jan-Allard Slurink

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Mar 18, 2001, 4:28:43 AM3/18/01

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> Leistung ca.: 1,3KW / 1,77PS.
> (PS is effectively the same as BHP - so approx.1,77 BHP is claimed)

To add a little detail: PS is not only *effectively* the same as BHP, it is
*exactly* the same. The 'H' in BHP stands for 'Horse', the 'P' in 'PS'
stands for 'Pferd', German for 'Horse'.

:-)

jas.

Jim Archer

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Mar 18, 2001, 5:10:40 AM3/18/01

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Thanks for that Jan-Allard - obvious when you think about it, but I never
did think about it!
(I'm not alone, I have seen several references to ;'PS' ratings of model
engines, all faithfully quoted as PS and not translated.............)

--
Best regards

Jim Archer, Norwich, UK
http://www.jimarcher.cwc.net

Jan-Allard Slurink <fake.jaslurink@morefake_bigfoot.kom> wrote in message

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Garnet Brace

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Mar 18, 2001, 6:53:33 PM3/18/01

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In article <991uvk$hvf$1...@porthos.nl.uu.net>, fake.jaslurink@morefake_bigfoot.kom
says...

>jas.
I don't think that is *exactly* correct.
There's a clue in the above spec 1 (english) HP is 746 watts and 1.3 kW is
thus 1300/746 = 1.743 hp. I'm still looking for the definition of PS but
I have seen it compared to HP as 1 PS = 0.98 Hp or thereabouts.
--
.... Garnet
return address is fake to try to reduce junk mail
if you wish to send e-mail to me please send to garnetbr * hotmail * com
only replace the * with @ and the second * with . (dot)

Jan-Allard Slurink

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Mar 19, 2001, 3:18:09 AM3/19/01

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Hmm, that's very interesting. I'll look this up when I find my book with all
the physical, bioligical and chemial formula's known to mandkind. But I've
recently moved to a new house, I wonder where the book is (sounds familiair
? ;-) )

jas.

"Garnet Brace" <ha...@cent.com> wrote in message
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Pé Reivers

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Mar 22, 2001, 4:35:35 PM3/22/01

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Indeed.
PS is not the same as HP.
Both translate as the power of one horse, but HP indeed is 746 Watts, while
PS (or the Dutch PK) is 735.75 Watts (75kgm/sec; Recalculate this value for
Nm/sec (10Nm=1Watt) gives 75x9.81=735.75 Watt, where 9.81 is g-for-gravity.)
or calculations, the Kg was defined as KgF, the force executed by the
standardweight in Paris due to gravity. This was done to overcome the
different gravities all over the world.

--
Pé, from Arcen, south-east Netherlands
http://home.planet.nl/~preivers
Please remove the not.this. to reply my messages

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