27% 170B build
Moderators: GAHorn, Karl Towle, Bruce Fenstermacher
Re: 27% 170B build
I would have expected you to draw the line on my BS long ago.
'53 B-model N146YS SN:25713
50th Anniversary of Flight Model. Winner-Best Original 170B, 100th Anniversary of Flight Convention.
An originality nut (mostly) for the right reasons.
50th Anniversary of Flight Model. Winner-Best Original 170B, 100th Anniversary of Flight Convention.
An originality nut (mostly) for the right reasons.
- Ryan Smith
- Posts: 1210
- Joined: Tue Nov 25, 2008 4:26 am
Re: 27% 170B build
Arash,
That pitot should have a static port on the side of the tube, to the best of my recollection. I was going to put that system in a Lancair, but left Horizon before I finished the airplane.
I will ask a friend of mine that was on the Spektrum development team if that can somehow be extended or a new tube made.I would think that a soldering iron, some small drill bits, and some brass or aluminum tubing could make a pretty accurate one in no time.
That pitot should have a static port on the side of the tube, to the best of my recollection. I was going to put that system in a Lancair, but left Horizon before I finished the airplane.
I will ask a friend of mine that was on the Spektrum development team if that can somehow be extended or a new tube made.I would think that a soldering iron, some small drill bits, and some brass or aluminum tubing could make a pretty accurate one in no time.
- Ryan Smith
- Posts: 1210
- Joined: Tue Nov 25, 2008 4:26 am
Re: 27% 170B build
Did you ever get a spinner worked out?
- Ryan Smith
- Posts: 1210
- Joined: Tue Nov 25, 2008 4:26 am
Re: 27% 170B build
Try the Bullet/Extra style from Pete Model. There is a little more point to the very tip, but I think it will be close for you. Carbon fiber with aluminum backplate, and perimeter mount screws. Carbon spinners are the norm nowadays.Aryana wrote:No spinner yet. Probably going to have a custom one spun out of aluminum. Don't know where yet though.
Would love to find one off the shelf but I think it doesn't exist.
- Ryan Smith
- Posts: 1210
- Joined: Tue Nov 25, 2008 4:26 am
Re: 27% 170B build
Lot of extra draaagggg. (heh-heh)
'53 B-model N146YS SN:25713
50th Anniversary of Flight Model. Winner-Best Original 170B, 100th Anniversary of Flight Convention.
An originality nut (mostly) for the right reasons.
50th Anniversary of Flight Model. Winner-Best Original 170B, 100th Anniversary of Flight Convention.
An originality nut (mostly) for the right reasons.
Re: 27% 170B build
SCUBA diving weight belt weight?
John E. Barrett
aka. Johneb
Sent from my "Cray Super Computer"
aka. Johneb
Sent from my "Cray Super Computer"
Re: 27% 170B build
Looks about the right size for a stabilizer....
(nice work!)
(nice work!)
'53 B-model N146YS SN:25713
50th Anniversary of Flight Model. Winner-Best Original 170B, 100th Anniversary of Flight Convention.
An originality nut (mostly) for the right reasons.
50th Anniversary of Flight Model. Winner-Best Original 170B, 100th Anniversary of Flight Convention.
An originality nut (mostly) for the right reasons.
Re: 27% 170B build
Big beautiful model belongs at a big beautiful model field 7k feet of golf course grass.
Take it to the Triple Tree (SC00) Flyin next September.
Take it to the Triple Tree (SC00) Flyin next September.
Re: 27% 170B build
Looks great! Is the 27% version going to have vortex generators?
John E. Barrett
aka. Johneb
Sent from my "Cray Super Computer"
aka. Johneb
Sent from my "Cray Super Computer"
Re: 27% 170B build
Hey, NOW is the least-expensive time to install DUAL land/taxi lites, you know....
'53 B-model N146YS SN:25713
50th Anniversary of Flight Model. Winner-Best Original 170B, 100th Anniversary of Flight Convention.
An originality nut (mostly) for the right reasons.
50th Anniversary of Flight Model. Winner-Best Original 170B, 100th Anniversary of Flight Convention.
An originality nut (mostly) for the right reasons.
Re: 27% 170B build
Aryana wrote:I ran out of miniature 337 forms so It'll have to wait
- Ryan Smith
- Posts: 1210
- Joined: Tue Nov 25, 2008 4:26 am
Re: 27% 170B build
Bad idea? No. Noticeably effective? Depends.Aryana wrote:My PhD buddy from Stanford went on at length about how scaling the VGs down is a bad idea...something about Reynolds numbers and a bunch of other stuff I didn't understand. I might try a temporary set on after the first flight, but as of now the plan is to leave em off!
I've flown models smaller and larger than your 170 with and without VGs during testing and in many cases, there is a difference. For what you're doing, maybe not, but in many aerobatic models I've flown, they do seem to help the airplane track a little straighter, and keep airflow over the ailerons a little better at higher angles of attacks. Models simply aren't that "exact"...they're not supercritical wings, they have loads of power, and relatively light wing loadings comparatively to their full-scale counterparts. During testing of the ParkZone VisionAire at Horizon, I was with Quique when he had the idea to test and he actually used twigs taped to the tops of the wings to replicate the airflow. Certainly molded VGs performed a little better, but not much.
Stick them at the center of pressure and have at it.
Re: 27% 170B build
That project is really looking good! The VG's would do the same thing for the 27% that they do for full scale high wing planes------cut your hands when washing/waxing the wings
OLE POKEY
170C
Director:
2012-2018
170C
Director:
2012-2018
Re: 27% 170B build
I'll furnish the miniature 337 form. You gotta admit, besides being cool, it would be the envy of the neighborhoodAryana wrote:I ran out of miniature 337 forms so It'll have to wait
Del Lehmann
Mena, Arkansas
Mena, Arkansas