need to pick the brains... - RCCanada

cpaine · 04-29-2007, 08:58 PM

4lb airplane.....requires a .40 2stroke....going to put on .60 2stroke with big prop (havn't figured that out yet....11x4 maybe) have people done this or am asking for an ill flying plane

SJrcflyer · 04-29-2007, 10:11 PM

60size two stroke is right in the middle of the majority of 3D planes out there. I would say try to find a slightly larger profile, that calls for a 46 or 50 2 stroke. May want to check out great hobbies since I know they just started to carry OMP planes. Maybe a Fusion??

Also on the prop, you need a bigger one. 12X4 APC is the prop of choice for .46's. So your going to want to step it up a bit from that.

Good luck!!

1367mustang · 04-30-2007, 01:36 AM

12x6 should be better . Two revolutions moves it 1 foot. 12,000rpm moves it 6000feet per minute.

Brian

cpaine · 04-30-2007, 08:25 AM

so for the .60 OS, i should go to 12x6? could i even go up to a 13x4?
i realize that i need to be hovering at least 1/2 throtle so some experimenting will be in order.

the Airplane is already built and i have a .60 OS so in other words, trying to save some money. I have made improvments on the airframe by giving it bigger control surfaces (way bigger).

i have been flying 3D with a Radix3D foamie and would like to try a gas one within a budget. i realize that sometimes it just easier to buy what is required but that isn't an option for me.

your help is much appreciated..... when this little project is done, i will post some pics and an update on flights....

SJrcflyer · 04-30-2007, 11:36 AM

I would definitely go bigger than 12" diameter. 13X4 would be better, but I don't really know the best prop for that engine.

hillmanr2 · 04-30-2007, 07:20 PM

My os 50 spins a 13x4 with authority. 14x4 at least. BTW I have the os50 on a 36 h9 tribute. it is redonculious.

04-29-2007, 08:58 PM	#1
cpaine Posts like a .15ci I am: Cory Paine Join Date: Jan 2007 Location: Paris, Ontario Radio of choice: Futaba/spectrum Feedback: 3 / 100% Posts: 127 Total Props: 0	need to pick the brains... Remove this ad - become a site supporter! 4lb airplane.....requires a .40 2stroke....going to put on .60 2stroke with big prop (havn't figured that out yet....11x4 maybe) have people done this or am asking for an ill flying plane

04-30-2007, 01:36 AM	#3
1367mustang Posts like a .18ci Join Date: Jul 2005 Location: Chatsworth, Ontario Feedback: 0 / 0% Posts: 247 Total Props: 0	prop 12x6 should be better . Two revolutions moves it 1 foot. 12,000rpm moves it 6000feet per minute. Brian __________________ 1367mustang A good landing is when you, the pilot, can walk away !!! MAAC # 75074

04-30-2007, 07:20 PM	#6
hillmanr2 Posts like a .46ci Join Date: May 2005 Location: Kelowna, B.C. Feedback: 0 / 0% Posts: 2,435 Total Props: 0	My os 50 spins a 13x4 with authority. 14x4 at least. BTW I have the os50 on a 36 h9 tribute. it is redonculious. __________________ SUPPORT OUR TROOPS Imac # 4751 Speedway and Hobby http://www.duralitebatteries.com/ PTA Hobbies

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04-29-2007, 10:11 PM	#2
SJrcflyer Posts like a .25ci I am: ChisR Join Date: Aug 2005 Location: Saint John, NB Feedback: 0 / 0% Posts: 606 Total Props: -4	60size two stroke is right in the middle of the majority of 3D planes out there. I would say try to find a slightly larger profile, that calls for a 46 or 50 2 stroke. May want to check out great hobbies since I know they just started to carry OMP planes. Maybe a Fusion?? Also on the prop, you need a bigger one. 12X4 APC is the prop of choice for .46's. So your going to want to step it up a bit from that. Good luck!!

04-30-2007, 08:25 AM	#4
cpaine Posts like a .15ci I am: Cory Paine Join Date: Jan 2007 Location: Paris, Ontario Radio of choice: Futaba/spectrum Feedback: 3 / 100% Posts: 127 Total Props: 0	so for the .60 OS, i should go to 12x6? could i even go up to a 13x4? i realize that i need to be hovering at least 1/2 throtle so some experimenting will be in order. the Airplane is already built and i have a .60 OS so in other words, trying to save some money. I have made improvments on the airframe by giving it bigger control surfaces (way bigger). i have been flying 3D with a Radix3D foamie and would like to try a gas one within a budget. i realize that sometimes it just easier to buy what is required but that isn't an option for me. your help is much appreciated..... when this little project is done, i will post some pics and an update on flights....

04-30-2007, 11:36 AM	#5
SJrcflyer Posts like a .25ci I am: ChisR Join Date: Aug 2005 Location: Saint John, NB Feedback: 0 / 0% Posts: 606 Total Props: -4	I would definitely go bigger than 12" diameter. 13X4 would be better, but I don't really know the best prop for that engine.

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