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FaceDeAce · 02-03-2006, 07:18 PM

Hi everyone,

I am about to glue in the firewall to the Hog Bipe. I am going to be powering the HB with an ASP 91 four stroke. I am wondering whether to glue in as per plans or to move the firewall back to offset the extra weight of the four stroke so the plane will better balance without having to add weight to the tail.

My question is: if you have powered your Hog Bipe with a 90 four stroke did you find it to be nose heavy or difficult to balance? If it will come out nose heavy, I can easily move the firewall back a 1/2 to 1 inch now at this stage.

If you know anything about this, give me some direction please.

DP01 · 02-03-2006, 07:44 PM

Mine (OS91FS) balanced per the plans with a 1400 maH nicad pack immediately behind the lower wing.

Dennis

Nuker · 02-03-2006, 08:12 PM

I have a Saito .91 in mine on a dubro anti vibration mount. Battery pack is on the cg and it balances fine to plans.

Bob

FaceDeAce · 02-03-2006, 10:32 PM

OK, thanks. Time to go mix up some epoxy

nony · 02-05-2006, 11:58 PM

I bought mine prebuilt and threw a 91 in it. It was not difficult to balance with out adding any deadweight......

Ken Currell · 02-06-2006, 09:19 AM

I just bought the kit.

Any suggestions to change anything during the build would be appreciated.

Thanks

FaceDeAce · 02-06-2006, 10:03 AM

Well, if you want to bash it into a Pitts - check out the April 1998 issue of Model Airplane News. I may be doing something along those lines to fatten up my hog a bit. Have to wait and see how the completed fuselage looks on the bench first.

There is also a bunch of pointers here at this dedicated web page:>

http://www.fubarhill.com/sighog.html

Other than that I will let you know if I encounter anything notable. The more modern versions of the kit (which is what I am working on) is very good. Many things have been corrected, including dual aileron servo installation kit, and bent aluminum gear mounted in front of the bottom wing. Ie --> the known needed fixes are already done by SIG.

For simple covering of the headrest, I will be gluing 1/16 balsa sheet over the ABS headrest with thin CA. Then I cover over the balsa by traditional methods. SAve the painting headache.

.

DP01 · 02-06-2006, 11:23 AM

I just couldn't bring myself to mount the engine upright so it's side mounted with a modified front end. It was converted to a "twin cylinder" with a shaving gel cap.

Dennis

Ken Currell · 02-07-2006, 03:54 PM

Hi

I don,t think I am going to do the Pitts thing but I really like the side mounted engine.

Cleans up the front end very nicely.

I think I will do that to my regular Astro Hog.

Thanks guys

02-03-2006, 07:18 PM	#1
FaceDeAce RCC Supreme Contributor I am: Claude P. Join Date: Sep 2002 Location: Great Western Radio of choice: Futaba 7C and 9C, Prism 7x # of RCs: 20+ Feedback: 8 / 100% Posts: 2,092 Total Props: 1	Hog Bipe CG - 90 four stroke Remove this ad - become a site supporter! Hi everyone, I am about to glue in the firewall to the Hog Bipe. I am going to be powering the HB with an ASP 91 four stroke. I am wondering whether to glue in as per plans or to move the firewall back to offset the extra weight of the four stroke so the plane will better balance without having to add weight to the tail. My question is: if you have powered your Hog Bipe with a 90 four stroke did you find it to be nose heavy or difficult to balance? If it will come out nose heavy, I can easily move the firewall back a 1/2 to 1 inch now at this stage. If you know anything about this, give me some direction please. __________________ Work Hard, Play Harder
	.

02-03-2006, 07:44 PM	#2
DP01 RCC Senior Contributor I am: Dennis P Join Date: Sep 2002 Location: Southern Ontario Feedback: 10 / 100% Posts: 687 Total Props: 3	Mine (OS91FS) balanced per the plans with a 1400 maH nicad pack immediately behind the lower wing. Dennis __________________ "Simplicate and add lightness"
	.

02-03-2006, 08:12 PM	#3
Nuker RCC Supreme Contributor I am: Bob D. Join Date: Aug 2002 Location: Whitby, Ontario Radio of choice: Futaba 12FG # of RCs: 1+ Feedback: 0 / 0% Posts: 3,312 Total Props: 0	I have a Saito .91 in mine on a dubro anti vibration mount. Battery pack is on the cg and it balances fine to plans. Bob __________________ Bob D. Ajax RC Club Indoor Aero-Choppers Member of MAAC since I joined Lighten Up, Life is waaaaaayyyy too short
	.

02-03-2006, 10:32 PM	#4
FaceDeAce RCC Supreme Contributor I am: Claude P. Join Date: Sep 2002 Location: Great Western Radio of choice: Futaba 7C and 9C, Prism 7x # of RCs: 20+ Feedback: 8 / 100% Posts: 2,092 Total Props: 1	OK, thanks. Time to go mix up some epoxy __________________ Work Hard, Play Harder
	.

02-05-2006, 11:58 PM	#5
nony RCC Supreme Contributor Join Date: Sep 2002 Location: the Park, Ab. Feedback: 0 / 0% Posts: 4,339 Total Props: 0	I bought mine prebuilt and threw a 91 in it. It was not difficult to balance with out adding any deadweight...... __________________ Wayne The sooner you fall behind, the more time you will have to catch up.
	.

02-06-2006, 09:19 AM	#6
Ken Currell Guest I am: Ken Currell Join Date: Jun 2004 Location: Whitby, Ontario Radio of choice: Multiplex Royal Evo # of RCs: 30+ Feedback: 3 / 100% Posts: 3,684 Total Props: 0	I just bought the kit. Any suggestions to change anything during the build would be appreciated. Thanks
	.

02-06-2006, 10:03 AM	#7
FaceDeAce RCC Supreme Contributor I am: Claude P. Join Date: Sep 2002 Location: Great Western Radio of choice: Futaba 7C and 9C, Prism 7x # of RCs: 20+ Feedback: 8 / 100% Posts: 2,092 Total Props: 1	Well, if you want to bash it into a Pitts - check out the April 1998 issue of Model Airplane News. I may be doing something along those lines to fatten up my hog a bit. Have to wait and see how the completed fuselage looks on the bench first. There is also a bunch of pointers here at this dedicated web page:> http://www.fubarhill.com/sighog.html Other than that I will let you know if I encounter anything notable. The more modern versions of the kit (which is what I am working on) is very good. Many things have been corrected, including dual aileron servo installation kit, and bent aluminum gear mounted in front of the bottom wing. Ie --> the known needed fixes are already done by SIG. For simple covering of the headrest, I will be gluing 1/16 balsa sheet over the ABS headrest with thin CA. Then I cover over the balsa by traditional methods. SAve the painting headache. . __________________ Work Hard, Play Harder
	.

02-06-2006, 11:23 AM	#8
DP01 RCC Senior Contributor I am: Dennis P Join Date: Sep 2002 Location: Southern Ontario Feedback: 10 / 100% Posts: 687 Total Props: 3	I just couldn't bring myself to mount the engine upright so it's side mounted with a modified front end. It was converted to a "twin cylinder" with a shaving gel cap. Dennis Attached Thumbnails __________________ "Simplicate and add lightness"
	.

02-07-2006, 03:54 PM	#9
Ken Currell Guest I am: Ken Currell Join Date: Jun 2004 Location: Whitby, Ontario Radio of choice: Multiplex Royal Evo # of RCs: 30+ Feedback: 3 / 100% Posts: 3,684 Total Props: 0	Hi I don,t think I am going to do the Pitts thing but I really like the side mounted engine. Cleans up the front end very nicely. I think I will do that to my regular Astro Hog. Thanks guys
	.

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