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LOW power limits
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occom

Joined: 26 Aug 2006
Posts: 404

Posted: Sat Jan 12, 2008 4:23 pm Post subject: LOW power limits

Thanks Paul, I knew someone would have had experience with small HP engines. 

I never understood the constant insistance from the world that everything 

must have more power and speed. In the early seventies I got along quite 

well with a 900cc car making 40 odd hp, and later a 1200cc Toyota making 70 

some odd. Now that fuel is expensive I cannot buy a car with an engine of 

that size, although they sell them in other markets. My old BMW motorcycle 

was made with engines running from 500 to 1000cc. I get along well on 600 

and would actually be happy with the 36HP 500cc. Everyone else apparently 

requires 1500 to 1800cc bikes weighing hundreds of LBs more to accompllish 

the same task. The simple fact is that I will likely never need a 1200fpm 

climb rate, and I'm not likely to get there as fast as an RV or even a 152 

regardless of engine choice.



Dave Goddard- Mod IV 1050/582

do not archive

---

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dave

Joined: 22 Sep 2006
Posts: 1382

Posted: Sat Jan 12, 2008 4:52 pm Post subject: Re: LOW power limits

 	  Quote: 	
		   The simple fact is that I will likely never need a 1200fpm 

climb rate, 	




Dave on the contrary.  -- you have a 582 and it will work well with your 550 empty weight.  My neighbour has a KF  1 clone  ( raven ) weight about 420 or 440 lbs  with a 503 single carb.  IT work well at over 100 lbs less than mine but I kick his ass on take off distance, climb and cruise.

I would also say thats mine dual  ( 2 guys are 220 lbs each will beat him off the ground and in climb and cruise as well. 

You can always use more power , it can get you out of trouble too , that is one thing you might not have considered yet.  Fuel burn not too different on the 503 to 582  but you will use more on a 582 unless you try to fly with a 503 like the one i mention above.  When he is a 6000  rpm in cruise  I am at 4800 rpm burning about 8 litres a hour.   IF you ever  want to put on floats , you will be glad you got the power.

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_________________
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av8rps

Joined: 05 Jan 2008
Posts: 33
Location: Central Wisconsin

Posted: Sat Jan 12, 2008 5:07 pm Post subject: Re: LOW power limits

[quote="dave"The simple fact is that I will likely never need a 1200fpm 

climb rate...) 



[/quote; Dave on the contrary.  -- you have a 582 and it will work well with your 550 empty weight..)



Dave (and Dave)



I agree it is fun to have an efficient, low powered aircraft.  But that 582 on a Model IV-1050 is a nice combination of efficiency along with lots of power (as the other Dave states).  In fact, I have about 10 hours in a MIV-1050 on full lotus floats, and even with full fuel and two guys it was  great performer.  It certainly wasn't lacking power.  



And extra power can get you out of trouble.  That is a really good point Dave made.  Being able to brag about a great climb rate is one thing, but clearing the trees on a short grass strip on a hot day with a heavy load is another.  The 582 in your airplane will work well, and that extra power will quickly grow on you.



Now, you can always open the doors and fly around at half throttle, burning little fuel if you desire. 



Paul Seehafer

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_________________
Model IV-1200 912ul Amphib
Avid Flyer Sn#1 and Sn#26
Highlander 912s taildragger
Lake Amphibian
Central Wisconsin
paul676@tds.net

occom

Joined: 26 Aug 2006
Posts: 404

Posted: Sat Jan 12, 2008 5:11 pm Post subject: LOW power limits

Thanks Dave, I will be using the 582 and I'm sure it will be fine. What I do 

when I want to replace or rebuild it I'll have to see. I've heard the more 

HP in case you need it from passengers in my little cars (from guys with 

340/383 v8's) and from other motorcyclists but the truth is that so far the 

only thing I've wished for more of from time to time is brakes. I do my 

flying right now in an 11,000 hour Cessna, not exactly a "king of climb", 

it's adequate.



Dave Goddard- Mod IV 1050/582

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dave

Joined: 22 Sep 2006
Posts: 1382

Posted: Sun Jan 13, 2008 3:07 am Post subject: Re: LOW power limits

 	  Quote: 	
		  I do my 

flying right now in an 11,000 hour Cessna, not exactly a "king of climb", 

it's adequate. 

	


Well, once you get going in your Kitfox, the Cessna  will perform very feeble if you go back. 



How long till you get flying your Kitfox ?

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occom

Joined: 26 Aug 2006
Posts: 404

Posted: Sun Jan 13, 2008 3:48 am Post subject: LOW power limits

Sort of depends on the weather. I didn't put heat in the workshop. I started 

putting fabric on in the fall and didn't like my workmanship so I removed it 

and started again. I might buy a heater and get a headstart. I should have 

been flying this last year. So, the short answer is I don't know, but I'm 

not in a hurry.



Dave Goddard- Mod IV 1050/582

do not archive



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dave

Joined: 22 Sep 2006
Posts: 1382

Posted: Sun Jan 13, 2008 3:57 am Post subject: Re: LOW power limits

Heat a great thing,  Best money i ever spent on insulation is the spray foam.  We have our shop done and over 1/2 of our house. Incredible.!!!



Once the wx warms up you could likely get it done in a few weeks.  If that inspiration or what ?



What covering did you go with afterall?  Did I tell you that Leavens has 1.7 uncertified ?  Would be suitable for you and superseam glue ( the old Rand o bond) I think it owned by super-seam now.  Easy to work with  and you want to get some contravery going ?   use controversy Paint   LOL 



Works great on our planes, mind you we are not going 150 mph.

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