Building Tips and technical articles. > Building techniques
Brodak Yak-9 Build
Colin McRae:
I have been wanting to build a 'smallish' warbird model and use a four-stroke engine. So, I decided on a Brodak Yak-9 kit that will be powered with an OS 26 FS. The Brodak Yak-9 also qualifies for OTS since it is a replica of the original Sterling kit design.
I was hoping to get some great 'lessons-learned' guidance from builders that have build-experience with this particular model. I am somewhat of a rookie builder, so I am open to all suggestions and recommendations.
The only thing I am not going to change is my OS 26 Surpass FS engine choice. I really want to do a CL warbird w/ a FS engine. Absolutely love that FS sound.
Thanks in advance.
Steve Berry:
You may want to look into getting the dihedral and wing mount landing gear kit for the Yak-9 through Brodak.
https://brodak.com/yak-9-wing-gear-dihedral-conversion.html
It raises the leadouts to get the vertical CG closer to where it needs to be, which will give better handling.
Between the Yak-9 and F-51, the Yak flies better, so good choice.
Steve
Sent from my SM-N986U using Tapatalk
Colin McRae:
--- Quote from: Steve Berry on November 22, 2023, 06:30:33 PM ---You may want to look into getting the dihedral and wing mount landing gear kit for the Yak-9 through Brodak.
https://brodak.com/yak-9-wing-gear-dihedral-conversion.html
It raises the leadouts to get the vertical CG closer to where it needs to be, which will give better handling.
Between the Yak-9 and F-51, the Yak flies better, so good choice.
Steve
Sent from my SM-N986U using Tapatalk
--- End quote ---
Thanks Steve, I would love to do the conversion, but our club somewhat bumpy CL circle is not particularly friendly to wing-mounted landing gear. So, I will use aluminum profile-mount gear. Not the kit-provided wire gear.
Steve Berry:
--- Quote from: Colin McRae on November 22, 2023, 06:35:33 PM ---Thanks Steve, I would love to do the conversion, but our club somewhat bumpy CL circle is not particularly friendly to wing-mounted landing gear. So, I will use aluminum profile-mount gear. Not the kit-provided wire gear.
--- End quote ---
You can still use the dihedral part of the kit to adjust the vertical CG, and use the aluminum gear.
Steve
Sent from my SM-N986U using Tapatalk
Ken Culbertson:
The Yak-9 was my slow combat plane during a year of friendly warfare while stationed in Korea. My counterpart, one of the Wolf Pack pilots flew the Mustang. McCoy 35's at high noon! We had quite a spectator audience for the duels. The Yak outperforms the Mustang but "it's the pilot, not the plane" so I only won my share. I concur with the dihedral, it needs it for stunt. Good thing the BX kept both in stock. They didn't last long!
Ken
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