Help! Fastest Airframe for 6 inch prop?!

[Mid7night]

Saw my name mentioned, but didn’t see Joshua Finn @FAI-F1D called out.

If you want to build a fast single-motor plane, Finn’s stuff is for you.

Don’t know where if he’s put any plans on here, but he has some kits on his site:

Speed Deamon | J&H Aerospace

Sharknado! | J&H Aerospace

 

[Mr Man]

Saw my name mentioned, but didn’t see Joshua Finn @FAI-F1D called out.

If you want to build a fast single-motor plane, Finn’s stuff is for you.

Don’t know where if he’s put any plans on here, but he has some kits on his site:

Speed Deamon | J&H Aerospace

Sharknado! | J&H Aerospace

Interesting, I didn’t know he sold kits.

 

[Mr Man]

I never quite understood why the FT Goblin modeled after the Strix Goblins has two v-stabs. The Strix Nano-goblin has two, but the full size Goblin has one..... ( I've had 3 Nanos and am building a full size)

I believe it is because the nano might be more popular and cooler to the general public.

 

[Mr Man]

So yeah, on my version, I kept having to cut the wing to get the correct sweep, now it is 3 inches shorter than the ft mini mustang. (Wingspan of course.)

 

[Mr Man]

And yes, the vert. Stabilizers go on the wingtips.

 

[LitterBug]

I believe it is because the nano might be more popular and cooler to the general public.

I remember when RMRC first came out with the Strix Goblins, they had a pre-build model of the Goblin up at FliteFest. It was BLISTERINGLY fast. My Nano-goblins have all been sub 100mph even in a dive, and the Goblin can easily bust 150 in level flight.

That said, The nano goblin can easily be set up as a sub 250g plane with flight times of 45+minutes on a 2S Li-Ion.
No way the Full size Goblin can hit that weight, BUT, it will be way more stable in wind and at high speed.

 

[Mr Man]

Yep

 

[Mr Man]

Well, my motor apparently is dead.😞. Found burnt coils. But, I’m switching to a 2205 2480kv red lite motor by edge racing, hoping for good performance.

 

[LitterBug]

Well, my motor apparently is dead.😞. Found burnt coils. But, I’m switching to a 2205 2480kv red lite motor by edge racing, hoping for good performance.

I've built a Bunch of quads with those Edge motors.

 

[Mr Man]

I've built a Bunch of quads with those Edge motors.

How are they?

 

[Mr Man]

Tested it, blew stuff from 15 ft away.

 

[Mr Man]

On 5x4.5x3 prop. On 3s as well.

 

[Mr Man]

FINISHED! I’m actually gonna run a 5x4.5x2 prop. On a 4s 1300mah Batt.

 

[Timmy]

Those control horns look iffy. I like the copious amounts of glue

 

[Mr Man]

They’re better in person. Camera angles make them look funky.

 

[Mr Man]

I like the copious amounts of glue

What would I do without it?🤣

 

[Mr Man]

Now to go over the easily repeatable mods:
1: removed 1 layer of foam from the spar.
2: formed the wing like a master series.
3: cut out the bottom of the wing where the servos go so they can sink all the way down in.
4: added sweep to the wing the way @Timmy recommended me too.
5: cut off the undercamber from the wing.
6: moved the vertical stabilizers to the wing tips.
7: reinforced the inner nose with popsicle sticks.
note, none of these are in any particular order.
‘Also, the nose actually lined up with the main body! My past two didn’t.

 

[Mr Man]

AUW With battery is under 460grams (Don’t remember exactly.)

 

[Mr Man]

Well, no go for this one, couldn’t get it to balance. I’m starting to think that the cg is in front of the wing, (I did change the airfoil after all.)

 

[Houndpup Rc]

FINISHED! I’m actually gonna run a 5x4.5x2 prop. On a 4s 1300mah Batt. View attachment 247050 View attachment 247051 View attachment 247052

A setup after my own heart! lol What power plant you got on there?