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Wildthing
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Hi Everyone -

Shot some footage of the T-50 V5 on 4S today


Even though it is a bit larger than some other planes in my hangar, it is still pretty swift

Links to the power setup.

Motor - GepRC GR2306 2750 kv https://www.banggood.com/Geprc-GR2306-2306-2450KV-2750KV-3-5S-Brushless-Motor-for-RC-Drone-FPV-Racing-p-1240972.html?rmmds=myorder&cur_warehouse=CN9 (currently on sale for 20% off, sale ending tomorrow 07 Sep 2018)

Prop - RC Timer 6x3 sport prop, also sold as KMP from Banggood and TGS from HobbyKing http://www.rctimer.com/?product-218.html

ESC - HobbyWing Platinum PRO 40A ESC with custom settings of 26.25 degrees timing and 8 KHz PWM frequency https://www.banggood.com/HobbyWing-Platinum-40A-PRO-Brushless-ESC-Speed-Controller-For-RC-Model-p-70384.html?rmmds=myorder&cur_warehouse=CN

Battery - Tattu R-Line 1550 4S 75C http://www.snhobbies.com/product_info.php?cPath=43_697_766&products_id=9278&osCsid=52888ddbe25c97cfe50a7e8bb1c7dd7d

Cheers,

Scott

My test with that motor and a 6X3 TGS prop was pulling 62 amps,
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e3_Scott
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My test with that motor and a 6X3 TGS prop was pulling 62 amps,

In my testing with the battery and ESC listed, the motor drew 60.3A, produced 62.4 oz/1770 gr of thrust. The HobbyWing Platinum ESC is pricey, but thus far in numerous 4S runs with this motor, it has come down only slightly warm, not caused me any issues and still allows me to keep the plane fairly light.

Cheers,

Scott
Park Jet noise...the "other" sound of freedom😎
#ParkJetnoise #ParkJetpilot
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Wildthing
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In my testing with the battery and ESC listed, the motor drew 60.3A, produced 62.4 oz/1770 gr of thrust. The HobbyWing Platinum ESC is pricey, but thus far in numerous 4S runs with this motor, it has come down only slightly warm, not caused me any issues and still allows me to keep the plane fairly light.

Cheers,

Scott

I was more worried about the esc. With my cheap 40A Predator esc I was getting 48oz of thrust.
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e3_Scott
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I was more worried about the esc. With my cheap 40A Predator esc I was getting 48oz of thrust.

Not familiar with that brand of ESC, certainly doesn't seem to be delivering the power this motor can produce with the 6x3 prop in my experience. Even if you reduced the amp draw by 25% which would more closely represent what is happening in the air, you would still be pulling about 46A. Depending on the burst rating of your ESC, it might handle that, but it seems like a lot of potential thrust is being lost with the ESC. If you decide to go up in size of ESC and you can experiment with the settings, I would give that a try. I experimented and tested quite a bit to find the custom settings that deliver the best performance, again the HobbyWing Platinum is a pricey ESC but it has performed exceptionally well and runs surprisingly cool even with the timing set to the highest value.

Cheers,

Scott
Park Jet noise...the "other" sound of freedom😎
#ParkJetnoise #ParkJetpilot
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XDmToter
Resurrecting the T-50 V5 Thread!

Started building my largest foamie to date.  It's a T-50 V5 scaled up to V2 dimensions.  40" wingspan ~ 54" length.

It will be running an NTM Propdrive 35-30 1400 KV with a 9 x 4.7 Prop. 

IMG_1053.jpg
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F1wanabe
Nice, love the prop slot design! That will be a big bird in the air. I wish the T-50 was a better slow flying plane because I love the look. 
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Sidewayskiwi
F1wanabe wrote:
Nice, love the prop slot design! That will be a big bird in the air. I wish the T-50 was a better slow flying plane because I love the look. 

LEADING EDGE SLATS
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XDmToter
F1wanabe wrote:
Nice, love the prop slot design! That will be a big bird in the air. I wish the T-50 was a better slow flying plane because I love the look. 


That is the "Low Noise Prop Slot" by Otto Dieffenbach on RCGroups:

https://www.rcgroups.com/forums/showthread.php?1608266-Prop-Slot-Noise-Reduction-Design-and-Tests

https://static.rcgroups.net/forums/attachments/3/7/0/5/4/2/a4886657-202-PropSlot2.jpg
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JTiger


That's pretty neat. I've always felt like a significant amount of the noise our jets make stems from the prop slot. 
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XDmToter
JTiger wrote:
That's pretty neat. I've always felt like a significant amount of the noise our jets make stems from the prop slot. 


I can't remember where I read this, but someone once said: "Noise is energy.  If you can hear it, you've lost it."
Who wants to lose energy to Noise when it should be converted to Speed! ðŸ˜‰
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JTiger
XDmToter wrote:


I can't remember where I read this, but someone once said: "Noise is energy.  If you can hear it, you've lost it."
Who wants to lose energy to Noise when it should be converted to Speed! Ã°Å¸Ëœâ€°


Too true!
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XDmToter
Some slow progress on the T-50.  Going to try a KFm3 airfoil and see how it goes.

IMG_1060.jpg 
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XDmToter
How are you guys setting the correct angle on the Nacells and Vertical Stabilizers?  The instructions say "Glue front Engine Notches to Wingplate and sides to underneath Fuselage", but that seems like too extreme of an angle to me.

IMG_1063.jpg 

IMG_1063.jpg 
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Boxermad84
Looks awesome, ive always wanted to build the v2 t50. I built the v1 and that was fast! looking forward to seeing this in the air!
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