10 to 30 hp 2 stroke motor and thrust comparisons

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Postby darkhorse » Sun May 14, 2006 9:57 pm

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darkhorse
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Postby darkhorse » Sun May 14, 2006 9:58 pm

.?
darkhorse
Popular Lazair Member
 
Posts: 34
Joined: Tue Jan 17, 2006 7:59 am

Postby darkhorse » Sun May 14, 2006 9:58 pm

.?
darkhorse
Popular Lazair Member
 
Posts: 34
Joined: Tue Jan 17, 2006 7:59 am

Postby darkhorse » Sun May 14, 2006 9:59 pm

.?
darkhorse
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Posts: 34
Joined: Tue Jan 17, 2006 7:59 am

Postby JPXman » Mon May 15, 2006 1:18 am

JPX engine i have two data points:

75 lbs thrust, 34"dia 20"pitch prop at 4250rpm
90 lbs thrust , 40"dia 17" pitch prop at 3550rpm

all direct drive, more results to follow.

Test Method:

We have a test stand with a free rolling section the nacelle mounts to. the only thing the engine is pulling is itself and about 5 pounds of steel, attached to a 150lb linear spring scale.
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Postby Guest » Tue Jun 06, 2006 12:03 pm

Can anyone report on thrust numbers for the rotax 185? Discribe prop used and if redrives or not? How thrust was measured? i.e. feed scale atc.
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