Just saw the Phoenix models A26 in tower.

[rifleman_btx]

Air retracts are very good, and high end electric retracts are just as good. So for me it's a toss up. And no I didn't know a nother thread had been started. Mostly because I mainly hang out in the prop plane forum. Almost forget there's other branches. :/

[crankestein]

Requirements; two 4S 4500mah lipos!

How much flight time is that?

[OV10]

Requirements; two 4S 4500mah lipos!

How much flight time is that?

Was answered here:

https://www.hobbysquawk.com/forum/rc-airplanes/propeller-airplanes/84418-just-saw-the-phoenix-models-a26-in-tower?p=84613#post84613

[Trobinson99]

So I pulled the trigger and ordered this plane.

I am planning on outfitting it as electric with the rimfire setup and 2 x 4s 5000 admiral batteries and 3 bladed props..

I am still undecided whether to replace the air powered retracts with electric. I will likely wait and see what the retract system looks like when it arrives.

[dkalwishky]

Post some pictures of the plane before assembly if you can, I'd like to see what it looks like.

[rifleman_btx]

Absolutely! I'm interested to see how you rate the retracts as well.

[Trobinson99]

When everything gets in I will create a new build thread and update with pics.

it currently says shipping in August, so I am not sure of the exact date.

Todd

[Trobinson99]

As I am still concerned with the Rimfire .32 spec, I added the data to eCalc ( to the best of my abilities) and came up with the following report

if I swap out the APC 2 bladed prop to a MAS 3 bladed 13x8 the Thrust-weight is 0.75:1 and the Power-Weight is 70W/lb

T

[rifleman_btx]

Ohh man that is alittle tight. She'll fly pretty scale though

[Trobinson99]

Ohh man that is alittle tight. She'll fly pretty scale though

For fun I ran the stock numbers on the Hanger 9 Twin Otter, the Hanger 9 Mitchell and the Top-Flite B-25 Mitchell. In both cases with the 13x8 props, the numbers were almost identical. With the MAS 3 bladed 13x8 all the numbers are better.

Scale it is...

[rifleman_btx]

Indeed very nice

[Trobinson99]

Guys, please ignore my previous post, the data contained some errors. I will update tomorrow

[rifleman_btx]

Copy that

[Trobinson99]

I have re-run the numbers in eCalc with the correct battery cell count.

Tower Hobbies recommend spec
2 x RimFire .32
2 x 60 amp ESC
2 x 13 x 8 2-blade prop.

As you can see by A-26 13x8 2-blade 60 amp ESC.jpg that spec puts the current draw and the max power over the limits of the ESC and motor.

Based on a response from Tower Hobbies posted by LDM, they have tested the A-26 on the RimFire .32 motors and suggest either a 13x6 2-blade or a 12x5x3 3-bladed prop.

The 13x6 2-blade still pushes the amp draw to slightly over the 60AMP for the ESC
A-26 13x6 2- blade 60 amp ESC.jpg

The 80 amp ESC provides enough for the 13x6 2-blade
A-26 13 x 6 2-blade 80 amp ESC.jpg

The 12x5x3 3-blade fits with the 60 amp ESC.
A-26 12x5 3 blade 60 amp ESC.jpg

I will likely bump up to the 80 amp ESC for extra wiggle room.

[Trobinson99]

Here is my currently planned Electric Power System

2 x RimFire .32
2 x Phoenix Edge 75 32V 75A ESC w/5 AMP BEC
2 x 5000MAH 4S 14.8V 40C
2 x MAS 12x6x3 ( one puller, one pusher)

[rifleman_btx]

I like it

[Trobinson99]

And to make her pretty...

[Hardway]

I love the A26, like all the warbirds! I modified a VQ A-26 into the gun nose version and this was the result...

[rifleman_btx]

Very cool, on both, can't wait to see the finished product T!

[Hardway]

I never flew this one with .46 OS engines. I lost one on takeoff roll and the P factor was so great, it made me scared to fly it!!! I didn't hurt the plane, but I did need a beer and a shot of Jose to settle me down!!! LOL I will change this to electric if I can get around to it! This was before gyros were popular and useable in fixed wing stuff... Anyway, good luck on the one from Tower!!!!!!!!!! :-)