RE: Skyshark 82" P40 Buildup  
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RE: Skyshark 82" P40 Buildup - 9/4/2006 11:34:23 PM   
Meschmidt


 

Posts: 367
Joined: 9/5/2002
From: Houston, TX, USA
Status: offline 		A ZDZ60 will be perfect. The BME 50 pulls it very well but a needed nose weight even without retractable tail gear. I say go for it! Paul

(in reply to dragoonpvw)
       Post #: 51

RE: Skyshark 82" P40 Buildup - 10/2/2006 4:17:47 AM   
fatboy2


 

Posts: 7
Joined: 1/18/2004
From: Columbia, MD, USA
Status: offline 		Anyone put a G45 or a G62 in this plane?

(in reply to Meschmidt)
       Post #: 52

RE: Skyshark 82" P40 Buildup - 10/2/2006 7:40:32 PM   
CaptHal



Posts: 70
Joined: 1/26/2002
From: Las Vegas, NV, USA
Status: offline 		Hi Guys, Finally something helpful on here at RCU. Usually it is just bad mouthing, whining about supposed infractions against the Formal Rules of Scaleness. Whatabuncha . Dick, you are the best, real reviews with the real plane. Will never let my subscription drop. Paul funny photo like land shark. Got my P40 before leaving for another "Road Warrior" trip through the airports of the US of A. Angie and team, great plane from what I've seen. Looking forward to building it and more.... flyng it. I plan on using my 3w-50 left over from another project. Dick any suggestions? Hints?
Thanks for something helpful,
hal

(in reply to fatboy2)
       Post #: 53

RE: Skyshark 82" P40 Buildup - 10/3/2006 10:26:15 PM   
rppoind


 

Posts: 10
Joined: 12/17/2001
From: Sour Lake, TX, USA
Status: offline 		Yes, I am putting a G-62 in mine. I am using a C&H conversation that replaces that big heavy flywheel with a nice light alumimum one and allow easy hand starting. It looks like a Bennett muffler will fit in the cowl with exaust exits in the cowl bottom. The carb will require a hole in the side of the cowl. I am upgrading linkage to ball joints and stronger links due to the extra power. Also stronger servos. I may change to real robart hinge points and add a few here and there. Now I have a question for the group. What is the weight of the Sierra wheel and tire? I just received the retracts and they are beautiful. Pulling the gear up has got to move the CG way back! I would like to hear from those of you that might know the weight and those that are flying their p-40.
Richard

(in reply to fatboy2)
       Post #: 54

RE: Skyshark 82" P40 Buildup - 10/4/2006 12:44:34 AM   
Meschmidt


 

Posts: 367
Joined: 9/5/2002
From: Houston, TX, USA
Status: offline 		Got three more flights on mine this weekend. Scale takeoffs still tricky. Hold full elevator (125%) high rates to prevent noseover on rollout. Build speed and relax elevator. Then apply gentle elevator to do scale takeoff. Plane tracks straight once rolling. Regular takeoff, (punch and go!) easily done. Mine came in at 23 lbs, 9 os. (Paintover + urethane). Using lightweight Dubro wheels. Gear pullup does not affect CG as much as you think it would. Effects speed more than flight characteristics. G62 w/CH ign. will be a rocket on this plane!!! Hold on!! Paul

< Message edited by Meschmidt -- 10/4/2006 12:45:27 AM >

(in reply to rppoind)
       Post #: 55

RE: Skyshark 82" P40 Buildup - 10/4/2006 1:53:43 AM   
Doolittleraider



Posts: 355
Joined: 11/1/2003
From: lakemary, FL, USA
Status: offline 		Paul shoot me those %'s again. Your high rate has 125%! on elevator. I was going to set my high at 85% and my low at 55. My ailerons were going to be 85 high and 45 low. All with 25% expo. I hate ultra sensitive planes. Please advise.
More flying/landing tips much appreciated Paul.
Doing taxi and engine tests tommorow hope to maiden next week.(ie next day off)
thanks
Peter

_____________________________

"No Mission is routine."
www.doolittletokyoraiders.com

(in reply to Meschmidt)
       Post #: 56

RE: Skyshark 82" P40 Buildup - 10/4/2006 2:39:42 AM   
Meschmidt


 

Posts: 367
Joined: 9/5/2002
From: Houston, TX, USA
Status: offline 		Peter. The numbers mean that you need all the elevator you can get for taxiing and the slow rollout as my plane has a tendency to nose over as balanced by the recommended CG. Once in flight the plane to me is sensitive at recommended throws. Set low rate once your airborne at 50% A&E, and go from there once you've flown it. Don't worry, the plane is very stable and easy to fly and only needs adjustment to your flying style. Good luck and keep posting. Paul

(in reply to Doolittleraider)
       Post #: 57

RE: Skyshark 82" P40 Buildup - 10/4/2006 7:28:22 PM   
rppoind


 

Posts: 10
Joined: 12/17/2001
From: Sour Lake, TX, USA
Status: offline 		OK, Here is the weight of the Sierra wheels straight from them.
" They weight is 9 oz. each. They are aluminum hubs with bronze bushings
and aluminum hub cap."

Is anyone flying the P-40 with these wheels and has there been any problem when they are retracted?
Also SkyShark is running a special right now on the main and tail wheel retracts. I just missed it!
Richard

(in reply to Meschmidt)
       Post #: 58

RE: Skyshark 82" P40 Buildup - 10/4/2006 8:22:01 PM   
cadconversions



Posts: 1135
Joined: 1/20/2004
From: Scottsville, KY, USA
Status: offline 		Richard,

The review in MAN this month had the sierra wheels and retracts and the author said he loved them.

_____________________________

Kevin

(in reply to rppoind)
       Post #: 59

RE: Skyshark 82" P40 Buildup - 10/4/2006 8:48:50 PM   
MK_IX


 

Posts: 35
Joined: 2/2/2003
From: Oviedo, FL, USA
Status: offline
quote:

ORIGINAL: cadconversions

Richard,

The review in MAN this month had the sierra wheels and retracts and the author said he loved them.



I included a picture of the Sierra wheels in the sidebar article as to what was available from Sierra, but I actually used 5 1/2" DuBro tires with the plastic wheels and added DuBro metal moon-disk covers. I did this in order to save weight. According to my scale, each Sierra wheel, tire and disk weighs 10.6 oz. The Dubro wheel, tire and disk weighed in at about 6.8 oz. Therefore, I saved almost a half a pound when you count both wheels.
On the other hand, the Sierra retracts are great.

John K.

(in reply to cadconversions)
       Post #: 60

RE: Skyshark 82" P40 Buildup - 10/4/2006 9:14:26 PM   
cadconversions



Posts: 1135
Joined: 1/20/2004
From: Scottsville, KY, USA
Status: offline 		Wow, I guess I should have read your article more closely. I saw the wheels on the pictures and the moon disc and assumed they were the retracts that you discussed in the side bar. Oops, I beg your forgiveness.

Kevin

_____________________________

Kevin

(in reply to MK_IX)
       Post #: 61

RE: Skyshark 82" P40 Buildup - 10/4/2006 10:06:57 PM   
Sonny.C


 

Posts: 13
Joined: 4/21/2004
From: Grapevine, TX, USA
Status: offline 		I recently received my Skyshark P-40 through Ebay, my question is: Do those of you who own the P-40 think a 3w-75 would grossly over power the plane? I have a 3W-75 engine available, but I don't want to create a problem aircraft. I'm a cheap SOB that doesn't want to buy another engine if I don't have to.


Sonny

(in reply to cadconversions)
       Post #: 62

RE: Skyshark 82" P40 Buildup - 10/4/2006 10:42:05 PM   
MK_IX


 

Posts: 35
Joined: 2/2/2003
From: Oviedo, FL, USA
Status: offline
quote:

ORIGINAL: Sonny.C

I recently received my Skyshark P-40 through Ebay, my question is: Do those of you who own the P-40 think a 3w-75 would grossly over power the plane?


Sonny


Sonny -
All I can tell you is I used an O.S. BGX-3500 in my P-40 and very seldom did the plane see full throttle. When it did ... HOLD ON.
Then again, my definition of fast may be different from yours .

(in reply to Sonny.C)
       Post #: 63

RE: Skyshark 82" P40 Buildup - 10/4/2006 11:14:40 PM   
bosssman


 

Posts: 310
Joined: 5/7/2004
From: Moreno Valley, CA, USA
Status: offline 		Like a few here, I too purchased the Skyshark P-40 off of Ebay for the low price of a little less than 400 bucks shipped to my house. Initially, I was a bit critical of the P-40 (ie the landing gear farings), but the more I saw of others building AND flying it, the more I was attracted to it. The price was the clincher for me. At any rate, what is the OVERALL consensus on engines? is the G-45 good enough? I don't want to hack up that beutiful cowl, but also don't want it to be struggling at maintaining speed. I have already ordered a set of Darrell"s retracts (been sold on his products LONG ago). I want to stick with gas for a plane of this size mainly for economics (fuel is NOT cheap these days). If many of the old time gas users think the G-45 is not enough or another brand/size of gas engine would be more beneficial (ie in mounting and not having to hack up the cowl), please speak up. Thanks!!

randy

_____________________________

"If you're in control, you're not going fast enough" (Parnelli Jones)

(in reply to MK_IX)
       Post #: 64

RE: Skyshark 82" P40 Buildup - 10/5/2006 12:40:48 AM