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Old Feb 02, 2012, 11:09 AM
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United States, NJ, Clayton
Joined Aug 2010
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I really want to use the "sfg's" but im afraid I'm gonna destroy the bottom ones...... whats this plane like with-out them?
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Old Feb 02, 2012, 11:35 AM
Irg
ol' yellow eyes is back
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Brooklyn, NY
Joined Apr 2009
7,645 Posts
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I flew her tonight without the SFGs for the second time. I broke one and got frustrated so I took them off. honestly, it's not all that bad in high alpha without the SFGs. it reminds me very much of a 46" Vyper. if you don't achieve the AOA sweetspot, you get a little rock, but with the nose up high enough it smooths out. hovers are fine. knife edge suffers a little without them, but I still managed a nice wide KE loop.

we've had a very mild winter here in BK, but the wind has been an issue. I've only had one evening with this plane in dead calm--definitely looking forward to more! handling in the wind seems to be improved with the SFGs off, fwiw.
^^^
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Old Feb 02, 2012, 11:40 AM
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United States, NJ, Clayton
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^^^
Thanks!
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Old Feb 02, 2012, 11:45 AM
Irg
ol' yellow eyes is back
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Brooklyn, NY
Joined Apr 2009
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I'll add that I was worried about breaking the bottom sfgs, but it was the top that snapped first in the car and then after a slight nose over, and then in the air after a repair....
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Old Feb 02, 2012, 08:16 PM
Time To Fly The Best!
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Hills of Eastern Ohio
Joined Nov 2008
13,799 Posts
Got to fly the Yak for a couple more at lunch today. Only 47 out, but a cold North wind. I forgot my Hoodie, just had my jacket and cap. Was shaking 3 minutes into the flight. Packed up, jumped in the car and cranked the heater for 10-15 minutes.

Started feeling normal again, jumped out again for a second flight.

My lunch must have kicked in, cause I felt a lot warmer on that one.

Definitely a speed improvement with this 950, actually pretty hot. The Yak is a much wilder plane now. Did a half power on Blender and it sorta scared me. Very abrupt! Was hoping the strap held! Did some more KE mixing tweaks tonight, testing again tomorrow over lunch. Getting very close on final tuning.
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Old Feb 02, 2012, 09:03 PM
doh!
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United States, AR, Little Rock
Joined May 2006
4,143 Posts
So how do you like the 13x6.5 vs. the other props that you ran?
I've got a 12x6 on mine now running the Rimfire 15 motor. Power/speed are fantastic, but I wonder if the 13x6.5, or even a 14x7 would make enough extra propwash over the control surfaces to make it worth buying a different motor?
This motor is a 1200kv and on 3s it's great power/speed. Happy there, just wonder about a bigger prop disc....
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Old Feb 02, 2012, 09:23 PM
Time To Fly The Best!
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Hills of Eastern Ohio
Joined Nov 2008
13,799 Posts
The 13x6.5 is pretty fast on 950. I liked the feel of the 14x7 before, except for the extra torqueness in Hovers, but I could get used to it. Easier to fly smoother lines with the 13x6.5. I do wish I had a tad more airflow when transitioning from an inverted harrier into standing it up in a hover, requires more chasing and inputs to stand it up and hold it there, more so than the 48 Edge on a 13x6.5.

Not sure what a 14x7 would pull on this motor, probably fine in this weather, but not in warm weather. After I get done with the KE Mixing, I may Wattmeter up a 14x7 and see what it does.

I'm enjoying the new energy the Yak has found with this Kv.
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Old Feb 02, 2012, 09:27 PM
3D Legion: "for we are many"
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United States, CO, Highlands Ranch
Joined Sep 2003
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Just have to set the throws and COG.

Just in time! We are getting 22-24 inches of snow tonight and tomorrow.
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Old Feb 02, 2012, 11:15 PM
Team 3DHS / Team JR
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United States, TN, Knoxville
Joined Apr 2010
4,373 Posts
Nice CNC work...those look MUCH cleaner than mine that I cut with Scissors.....

I'd LOVE to try a set of the 0.060" when they are cut...
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Old Feb 03, 2012, 09:37 AM
3D Legion: "for we are many"
aerosheldon's Avatar
United States, CO, Highlands Ranch
Joined Sep 2003
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Originally Posted by Bivens View Post
Nice CNC work...those look MUCH cleaner than mine that I cut with Scissors.....

I'd LOVE to try a set of the 0.060" when they are cut...
me too, me too
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Old Feb 03, 2012, 10:21 AM
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United States, NJ, Clayton
Joined Aug 2010
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I also noticed that 3dhs has stepped up the quality of the hardware, love the new axles with the wrench, simply awesome! Also got spare rolls of covering! Whoo hoo!
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Old Feb 03, 2012, 11:17 AM
Crashing Gooder and Gooder!
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United States, CA, Mission Viejo
Joined Feb 2009
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FYI - Anyone local, screaming deal!

http://www.rcgroups.com/forums/showthread.php?t=1586123
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Old Feb 03, 2012, 10:57 PM
MN WATTS Master
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United States, MN, Mankato
Joined Jul 2003
7,369 Posts
I did receive some .060 material today. I was able to do a test cut but we stepped down the bit to a 1/16th rasp style bit. This gave a cleaner cut and didn't push or pull the material as much. However it does mean the mounting holes for the nylon bolts do need to be drilled out. The material is more rigid but there is still some flex to them. They are also a tight fit. The stock SFG tabs are about .053 in thickness so these required a touch of encouragement to fit together in the slots.

I'm happy with the cutting but I have a few small tweaks to the file to get it perfect and as fast as I can. I need to check on the material cost and availability of the sheets and then I should be able to come up with a cost to cut them out for others.

Hopefully I know in the next day or so and can soon get some cranked out.

Steve
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Old Feb 03, 2012, 11:19 PM
Half way there
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USA, FL, Ocoee
Joined Sep 2008
1,203 Posts
what is the weight compared to the stock ones?
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Old Feb 04, 2012, 04:00 AM
Irg
ol' yellow eyes is back
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Brooklyn, NY
Joined Apr 2009
7,645 Posts
very nice! I'm definitely interested in a set.
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