3DHS 70" Velox

[gyro]

Ok... here we go!
All spread out and ready:


The motor! Subsonicplanes Motrolfly DM4325-280 for 8s power!


Castle Creations ICE 100 with a BEC Pro v2 BEC


Solar D771 Digital Coreless Metal Gear Servos


Nice servo connector insurance from Aztech Aeromodels!


Control horns installed and drying!


motor box installed, had to re-do the holes for the motrolfly:


Motor test fitting with the included wood spacer:


Looks just about perfect... maybe one washer and we're good!


Really like all the lightening inside the fuse! There is not a bit of wood in there that doesn't need to be!
Also, look at the CF stringers (one on each site) from the firewall all the way to the tail! Lots of CF strengthening in there!

 

[gyro]

Setting up the tail using 15 minute epoxy, and vaseline in the joint:


Was really happy with the amount of deflection I was able to get!

 

[gyro]

gotta fast forward a bit, as I didn't take any more pictures during the build. She went together like every other 3dhs bird I've built, which is super easy:

 

[robj]

Ok I'll grab some space....


General pics of the stuff in the box. Parts baggies for various areas of the plane.

..

This one does come with an E-box, nice.

My old 71 gear to go into this plane

I always run into this...unless I'm doing something wrong..

A few spacers centers up the wheels.

The E-box going on..

Instead of messing with the holes, I elongated them, with the large blind nuts and front spacers and plenty of plate thickness, they hold fine. The spacers are 3/8"

For some reason the cowl wouldn't line up right, I flattened one side of the spacers.

Still not perfect but..

with the spinner, not a big deal. I'll go back and spend some more time on that.

These things never go in right....so I ground them a little shorter. Can you notice the mistake?


I thought I had a second pic of this. But when I cut these out I leave the covering a little long. When the servo goes in it will fold it in and have a nice rounded look. You could do it with an iron to I guess.

Where I am so far. Basically the normal part of the build. Install the stab, elevator, rudder, etc,

I went ahead and installed the blind nuts for the cowl this time. A little more time to get it right than screws but it looks nice.

Interesting tail design. Usually(slick, extra, etc) you can adjust the rudder to touch the elevator. Not on this plane as the rudder sits further back.

..


Clean bottom... If you don't grind off the bottom of the cowl, your canopy won't go on!

 

[SnowDog]

awesome pics guys, and really cool looking scheme!

If I ever have to replace my Vyper, this will be what I get!

 

[gyro]

ok, uploaded my final pics to the posts above, and will call this build "finished"
The final components list changed, due to the problem I had with the Castle ESC and some smoke:

ESC: ZTW 100A HV
Servos: Align DS-610M with aluminum horns

Overall, super impressed with how well this plane flies down low. Harriers were downright simple, and very stable with no wing rock.
I also had a little bit of trouble getting my canopy on, so I removed the gasser cowl ring, and sanded down on the inside a little bit. The fit is snug, but it works well.

Definitely another awesome plane!

 

[3DeltaFly]

How are the Solar D771 servos holding up?

I've got a set of the mini servos (Solar D654) in a foamy and can't find a thing wrong with 'em. Only 150 something flights on 'em so far though, so time will tell.

 

[gyro]

How are the Solar D771 servos holding up?

I've got a set of the mini servos (Solar D654) in a foamy and can't find a thing wrong with 'em. Only 150 something flights on 'em so far though, so time will tell.

They're actually on NJSwedes 72" Extra right now... Long story but they're doing fine.

 

[kerwin50]

I'm running the 770's in my MX. They've been in there a year now and still are centering well

 

[3DeltaFly]

Ah, good to hear the 770's are working well. The Solar servos do appear to be of fairly good quality. I'm just always wondering about how well the motors will hold up in the less expensive servos. A friend's plane went in due to a servo failure, and I tore into it (Tower Pro MG16R) to see what failed. The motor brushes were worn completely off, and that happeded at flight 153 (3D and 6 ~ 7 minute flight duration). The plane is a PA Addiction-X, since repaired and back in the air.

I've been looking at getting a spare 3DHS 70" airframe, and presently considering either the 70" Velox or the 72" Extra 330SC. Has anyone flown both?