It should work at the 7 or 8 o'clock position and still be accessable as long as it doesn't interfere wiht the wing.

Dont worry about it , as lloong you dont use that "door" you will be fine
also make sure there is some slack on the steering cables.

Hello,
I am thinking about a Flash for my next airplane and have a couple of questions I hope some of you Flash owners may be able to help me with. I have Behotec retract, struts and brakes. I would like to know the lenght of the nose and main struts from the top of the strut to the axle. Also, my behotec brakes do not fit around the strut leg and this makes the wheel /brake assembly thick. I am concerned that this might not allow the wheel to fully retract into the wheel well. I would like to know the width of the wheel/brake strut assembly for a proper fit as with the Intairico assembly.
If anyone knows or can measure these distances for me, it would be greatly apreciated.
Thanks in advance,

Cody

Finally getting down to the nitty gritty.

I'm building the cockpit and need a pilot. I had heard that some were using a Cermark one but mine doesn't fit properly. Before I start surgery and cut this guys arms off, does anyone have a recommendation for a pilot that will fit the stock cockpit tub?

I've read this entire thread and I have some questions:

1) Why do some people need heat shield around the tail pipe while others don't? Are the people with heat problems installing their pipes incorrectly?
2) Where should the flaps be set? 65 mm? 45 mm? Some say the 65 mm (per manual) is too much and causes pitch oscillation (coupled with an aft CG).
3) The p120 doesn't sit dead center with the mount, the kit supplies two wood rectangles to offset the mount; did others have to do this too?

Having asked those questions, where is my setup:

P120 (Non SE)
8411 all around
JRSport 126MG for the nose wheel
Behotec C36/2 retracts with stock nose gear, BUT Dreamworks trailing links retracts made for 6mm pins. I also ordered the "beefier" 6 mm pins from altecare.
Smart Fly EQ 12 with two fremco A123 batteries (2300 mAh)
For the ECU battery, I need to ask Bob Wilcox if I can use a 3 cell A123, if not, I'm going with a big 2S lipo.
1221 receiver, no need for the 1222 since I'm using the EQ12

Tell me what you think.

Can't say, i added some protection to my stab and the rudder servo/servo leads just in case of a hot start but no other protection at all, the fuselage above my pipe/turbine doesn't even get warm, the NACA holes allow air in to cool the pipe and this helps cooling considerably.

i set mine by eyeball by what looked good to me, after flying it i found what i had set to work great so i never adjusted them again.

All JetCat turbines have an offset mount and will require the shimming to sit centered.


on the ECU i like the 2S 3800 mah Duralite LiMg.

NACA inlets, do I need those? My friends who fly their flashes with the 120 and titan did not cut any NACA inlets and even claim the inlets can cause damage by catching too much air.

I've got a Titan SE in my Flash and it has the NACA inlets, as you can see in the pic, there is no damage at all to them and she's been at top speed many many times. I'd recommend adding them otherwise the outer pipe has no way of drawing in air, the bellmouth basically seals off the forward bulkhead and the pipe seals the tail cone.

I still haven't decided if I will use the NACA inlets but I have another question for you flash fliers, what length servo arm do you use? I bought 1.5 inches all around; the 1.5 inche arms matches the length of the arms on the control surfaces, but in the elevator you cannot put the covers with the 1.5 inche arms. Please advise!

i used the JR heavy duty nylon horns on every surface.

I would strongly advise using the additional air intakes at the rear of the fus'. There is quite a bit of heat to disperse in this area. Ron.

Length? Does the elevator covers fit over them?

I'll have to do more research, my buddies don't have them and they have been flying fine; while a bunch other people on RCU are advising to have them.

Is there any reason not to have them?

someone told me they can rip out the rear of the plane under high speeds. I am putting a 120 but eventually I will put in a titan.

JR only makes one HD Nylon horn, it's roughly 3/4", part number JRPA215 and the covers will fit over them.

on the NACA inlets, as previously stated I've got a Titan SE in my Flash, never had a single problem with the inlets, I'd love to see pics of your friends who had problems. if you don't put the holes, you'll have cooling problems with the pipe and the rear fuselage area.

if you're really that worried about it, just line the inside with light ply before cutting the holes, then they would have a doubler, it's not necessary though.

Where do you fly at stubbenville ????

Who, me?[sm=71_71.gif]
Pittsburgh ARCS

Guys.. i need the size of the exaust tube of flash...

lenght, outside diameter and weight... ?

anyone can send to me??

Thanks

Heraldo

"I've got a Titan SE in my Flash and it has the NACA inlets, as you can see in the pic, there is no damage at all to them and she's been at top speed many many times. I'd recommend adding them otherwise the outer pipe has no way of drawing in air, the bellmouth basically seals off the forward bulkhead and the pipe seals the tail cone."

Quick Question. If the front and the back of the pipe are "basically" sealed, how does the air from the NACA inlets flow?
Would a front inlet and rear exaust be more effective?

Doug

under the inlets is where the gap between the two pipes is at.

no need for naca inlets unless you fly at temps around 35 celcius or more.
i fly the flash with 145N , and dive full and well over 250MPH , no problem...
temps are well below the max rate so all is ok

The air enters the inlets and is drawn between the inner and outer pipes. There are also holes in the former around the bell-mouth. But, the last two sections of the plane are sealed and I always think that this area could use some ventilation.
Here's a pic of my inlets:

there is also enough flow between the front retract and fuselage forcing the air outwards

If you are moving