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Sapac Comp Hawk

Old 08-29-2009, 04:35 PM
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Default Sapac Comp Hawk

can someone tell me if the stated c of g of 140-145 mm back from the bottom of intake is correct on this plane
as it seems very nose heavy for rotation with the landing gear installed
thx
Daryl
Old 08-30-2009, 10:55 AM
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Default RE: Sapac Comp Hawk

Yep mines at 140 and flys like it's on rails...over 50 flights
I'm going to slowy move it back to see if that slows it down for landing

great flyer
Ron
Old 09-01-2009, 09:27 PM
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Default RE: Sapac Comp Hawk

that sounds great Ron,mine seems quite heavy with the 4000mah pack,how much runway do you use?
I was thinking of bending the main struts forword towards the CG to help with rotation,my field only has about
300' of pavement
Daryl
Old 09-02-2009, 06:25 PM
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Default RE: Sapac Comp Hawk

Daryl ,
Rotation is not a problem .. I fly mine with a 4s 4200 and 5000 mah pack so your just fine with the 4000 mah..

but I will say 300' is going to be tight to land on... I've got maybe 60 flights on mine and I would have a hard time stopping on 300 ft.
it can be done .... but becarful
I fly at three site ones 1000' , 600 and 400
I use up most of the 400 on landing... maybe 200 to take off...
if you can use a longer site to get used to it that would help
I fear if you try and get it slow enough to stay in the 300' you'll stall.. so watch your speed

if it starts to wing rock give it some power

I hope it works out well for you.. keep us posted

later
Ron
Old 09-02-2009, 06:27 PM
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Default RE: Sapac Comp Hawk

Mine is the version 1 with no flaps
does yours have flaps? that would help a lot
Old 09-02-2009, 07:04 PM
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Default RE: Sapac Comp Hawk

no flaps on this one as well,if I can set her down on the pavement then role off into grass probably be ok
hope the gear will stand up
Old 09-03-2009, 01:01 AM
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Default RE: Sapac Comp Hawk

you could also set your wheel collars a little tight ...not much
just enough to get some friction to slow you down... I've done that and it works pretty well

just try and get them even so it doesn't pull to one side

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