Six Turning, Four Burning

They are the numbers he gave me, no typos, the motors are on the 4max site along with the speedos and props
Thought the difference in the props might be one lot turns counter clockwise

BB
Apart from cost (6 off!) the PO 3541-1070 looks reasonable and there are spares available.
Is a 9" prop anything like true scale diameter for your B36?
I note the Emax web site recommends a 45 to 60 A ESC for this motor so it would be wise to follow Eric's advice and use a bigger ESC. If it proves that you needed more power then you could safely go to the maximum rated power of the 3541 motor. Note however to do this would require new props and/or new 4S batteries. "Six turning" does get pricey if you ever need to change anything.

If the recommended props do only require 25A maximum then it could be argued that the 3541-1070 is a bit over specified for the job. A smaller and 20% lighter (and slightly cheaper!) 3535-1090 is still rated for 30A continuous so could handle the same prop.

I does appear that the props are CW and CCW. Not scale but given the substantial over scale power being installed it is probably a good idea.

I do like to bench test my proposed motor/prop/battery combo with a Wattmeter so I know what the figures actually are before going too far.

The gent at 4max did some tests with it, this is how he came to the figures hes given me, altough i still think his 25lbs is over the top, and yes 9" props are scale size, but 10" would look ok if i need to go bigger,
APC props are the wrong shape, it needs square ends
I think ill deal with him as im off HK except for the Zippy lipos, they dont have anything in stock anyway

You could always buy a paddle blade (round tip) 10x7, as used on the Bushmule , and cut 1/2" off the tips to give a square blade 9x7.
Then if you do need more power just buy some more and don't cut off the tips.

Note you only have to buy 3 sets (each with 4 props) to give you two complete sets of 6 props.

I progress Yavas yavas, the wing is all sheeted and i made a start on the tail feathers and fin, i have some retract units that i brought back from Cyprus, the 3 units weigh 526g , the built wing weighs 974g dont think thats to bad for 110 inch wing, it just fits in across my shed

Looks good.
The B36 has quite a long nose but with six 150 g motors (say 750 g with props?) are all placed quite a bit behind the CofG the battery(s) may have to go well forward in the nose to compensate.
This might also mean the ESCs might have to be mounted forward as well (cooling?) to keep the sensitive battery to ESC length reasonable.

Just thinking out loud.

Yes, been thinking about that, it will mean a long wire run to the outer motors, maybe even all the motors

In an effort to keep the back end light i kept the structure of the fin rudder and tailplane as light as possible and sheeting it in 1/32 sheet
Only problem my clumsey arthritic fingers/ hands cannot cope with such flimsey things
Recovered in 1/ 16th now

After a multitude of coats of paint
Filling, sanding i think the plug is finaly ready
Thought i would look at the turbines, looking at pictures on the net i think they are something like this they are quite a lump, made small by the size of the plane

Lot more carving and sanding, this will be the plug for doing them in fibre glass, at least they are both the same, not like the ducts for the air inlets under the wings for the engines, all 6 are different
Got the rules for the club i joined
Wish i had not bothered now

Brilliant project BB, can't wait to see it finished and flying, quick one, why balsa wings and a glass fuselage? would have been a lot less f##king about to have rolled a balsa fuselage..

Whilst you have 'four burning' in the title the jets were only added to the B36D so the 73 B36A & B managed without although most Bs were retro fitted with the jets. The pods were actually built under licence from Boeing as they were the inner pair of the B47!

If you do without the jets you could even do the huge single main tyres of the prototype. At your scale they would be about 7" diameter!

As we have come to expect,, That is very nicely done

Paul the reasons i have done it this way is to try and keep the rear as light as possible, the round fuselarge will be quite strong without any formers, ill add some strengtheners for the tailplane, wing and nose gear
The other reason is to avoid damage, its a big model and like the hunter i build with balsa fuselarge being a clumsy ham fisted old bugger i damaged the huter every time i took it out, hopefully the fibre glass will help that side of it
Sanded the pod to shape
What you think

This morning i made up the fence around the fuselage so its ready for when i do the mould,
This afternoon i glassed one side of every part,
left my heater on in the hanger, its just ticking over,
I have just been in to check on it must be 30 deg in there and the glassings gone off nicely
Ill leave it on overnight

Had some metal arrive yesterday so for a change i thought i would have a go at the main gear with my limited tools
The wheels are all i have at the moment but the larger one is the right size, need to get some springs