Show me your Bandit Install pix
09-30-2008, 03:47 PM
#1
Show me your Bandit Install pix
Hey all, coming to equipment layout and install time and i am trying to pre-plan. I will be using a SmartFly EQ-10, JR 921 2.4, TJ Smoke system, Jetronics Brakes and UP undercarriage valve (UP-2). Has anybody built theirs with the BVM recommended method of usig button valves??. Starting to look awefully cramped in this S.B.B. Thanks, Nick
09-30-2008, 04:43 PM
#2
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RE: Show me your Bandit Install pix
I'll post some pix in a little while of my SBB (now with composite wings).
Button valves work fine in the BVM pnuematic system.
All of the BVM pnuematic system components are time proven, and very reliable....literally hundreds if not thousands of BVM jets are using the BVM pnuematic systems components. I have never had a failure caused by a button valve or BVM landing gear valve.
Button valves work fine in the BVM pnuematic system.
All of the BVM pnuematic system components are time proven, and very reliable....literally hundreds if not thousands of BVM jets are using the BVM pnuematic systems components. I have never had a failure caused by a button valve or BVM landing gear valve.
09-30-2008, 04:49 PM
#3
RE: Show me your Bandit Install pix
Hello Friends:
I show you a photo of my Bandit.
Regards.
________________________________________
http://cmjets.blogspot.com/
I show you a photo of my Bandit.
Regards.
________________________________________
http://cmjets.blogspot.com/
09-30-2008, 05:26 PM
#4
RE: Show me your Bandit Install pix
Heres a shot of a friends ARF Bandit with DSX 921, Powerbox Sensor Switch and JC Turbine.
Uses all stock air system and works well..as always.
My own ARF Bandit uses a UP2 on the gear/door, this is mounted on the lower plate (so that you don't have to discontect the air if the top plate comes out)
Dave Wilshere
Uses all stock air system and works well..as always.
My own ARF Bandit uses a UP2 on the gear/door, this is mounted on the lower plate (so that you don't have to discontect the air if the top plate comes out)
Dave Wilshere
09-30-2008, 05:56 PM
#12
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RE: Show me your Bandit Install pix
Nick,
Mine is a Super Balsa Bandit like yours, but pretty elderly, as I built it in late 2003. It has lots of flights, but early on, it didn't fly as clean as it should, as I somehow built a small warp into one of the wings.
I replaced both wings with composite wings, and now it is like it should be...smooth, and fast, without any bad traits. I have built 5 Super Balsa Bandits, and this is the only one that had a problem........I must have gotton careless.
Attached are some pix of it....I have the Tamjets nozzle, and both vertical fins, with 8411 rudder servos. The large servos are a tight fit, but with some care, they will fit both rudders.
I have redundant batteries, redundant switches and redundant Fromeco regulators, but I don't use any of the power distribution systems that are so trendy right now. It's on 72 Mhz as well. No use fixing something that isn't broken.
The receiver is ahead of the equipment tray in the nose with both batteries.
The button valves are used for opening and closing the landing gear doors, and for dropping the tanks or bombs from the wing hardpoints. The drops are actuated by a button valve and the mini servo just ahead of the header tank on the L/H fuselage side. It is Velcro'd to the side.
All of the air lines to the equipment tray components (brake valve, door trigger valve, pressure gauges, fillers, drop tanks trigger valve) are on quick disconnects for easy equipment tray removal and access to the equipment below the tray (switches, regulators, nosegear, etc.).
The air lines are .020 safety wired on all of the barbed fittings throughout the airframe for leak protection.
Since your equipment choice is so different than mine, these photos might not be of much help to you, but there might be something in there that might make your task easier.
Mine is a Super Balsa Bandit like yours, but pretty elderly, as I built it in late 2003. It has lots of flights, but early on, it didn't fly as clean as it should, as I somehow built a small warp into one of the wings.
I replaced both wings with composite wings, and now it is like it should be...smooth, and fast, without any bad traits. I have built 5 Super Balsa Bandits, and this is the only one that had a problem........I must have gotton careless.
Attached are some pix of it....I have the Tamjets nozzle, and both vertical fins, with 8411 rudder servos. The large servos are a tight fit, but with some care, they will fit both rudders.
I have redundant batteries, redundant switches and redundant Fromeco regulators, but I don't use any of the power distribution systems that are so trendy right now. It's on 72 Mhz as well. No use fixing something that isn't broken.
The receiver is ahead of the equipment tray in the nose with both batteries.
The button valves are used for opening and closing the landing gear doors, and for dropping the tanks or bombs from the wing hardpoints. The drops are actuated by a button valve and the mini servo just ahead of the header tank on the L/H fuselage side. It is Velcro'd to the side.
All of the air lines to the equipment tray components (brake valve, door trigger valve, pressure gauges, fillers, drop tanks trigger valve) are on quick disconnects for easy equipment tray removal and access to the equipment below the tray (switches, regulators, nosegear, etc.).
The air lines are .020 safety wired on all of the barbed fittings throughout the airframe for leak protection.
Since your equipment choice is so different than mine, these photos might not be of much help to you, but there might be something in there that might make your task easier.
09-30-2008, 06:03 PM
#13
RE: Show me your Bandit Install pix
Has anybody ever done other than the BVM way of Elevator servo mounting. The reason why i am asking is that i was thinking of making a servo box on either side of the fuse in the back, and use solid titanium rods with ball links (4-40)???
09-30-2008, 06:44 PM
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RE: Show me your Bandit Install pix
Not to hijack Nick's thread, but where do you get those little LCD voltmeters? I am doing a f-18 project in a few weeks and would like to use some.
Nick, looks like you'll be flying the shockjet at woodland next week or you work really fast[X(] se you there, Kevin
Nick, looks like you'll be flying the shockjet at woodland next week or you work really fast[X(] se you there, Kevin
09-30-2008, 06:50 PM
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RE: Show me your Bandit Install pix
The stock Super Bandit and Super Balsa Bandit elevator servos are mounted in a good spot. The mounting area doesn't get too hot, and long extension leads are not necessary. They are easy to install and service through the bottom hatch, and the linkage is free, smooth and precise. The pushrod is a straight shot to the control horns. What could be better?
The only change I have made is installing aluminum servo arms in place of the stock JR plastic arms.
IMHO, I don't think aft servo mounting would make any noticeable change in the flight characteristics or in increased servo life.
The only change I have made is installing aluminum servo arms in place of the stock JR plastic arms.
IMHO, I don't think aft servo mounting would make any noticeable change in the flight characteristics or in increased servo life.
09-30-2008, 06:58 PM
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RE: Show me your Bandit Install pix
The handy little digital voltmeters are available at Dreamworks. Look under misc. radio accessories...
P/N RAD2040..... price is $42.99 ea.
P/N RAD2040..... price is $42.99 ea.
09-30-2008, 08:05 PM
#20
RE: Show me your Bandit Install pix
Looking good Justin and Harley. I will go with the button setup as well as the stock Elevator setup. The main worry i have is that when i go to fit 8411's in the cutout, it seems as though they are too deep for the opening, basically the servo forces the lower fuse down a little bit. Normal? I was going to shim the servo inboard 1/8 to clear this?? The whle bulkhead/e-mounts is interlocking, so there is really no way to change this without modifiying it intentionally.
09-30-2008, 08:50 PM
#22
RE: Show me your Bandit Install pix
Come on Nicky-boy, don't give up that easy!!!! Them there Bandits almost snap together. Stop worrying and keep building and stay off the GD phone; you're wasting time. Worse case scenario, we both stay up all night Oct 9th and finish it off together. You DO need more Canadians on your payroll!!!!
I checked the elevator pushrods for my original Bandit. From center of elevator torque rod ball to clevis pin is 20-3/4". Two of the donuts are installed about 5-1/4" from the center of the ball (there is a flat spot sanded on these) while the other is about 4" from the clevis pin. The pushrod is 1/16" music wire within a yellow nyrod which is glued (with small donut spacers?) into the CF tube. 4-40 threaded link soldered on one end (for the ball clevis) and a 2-56 threaded link soldered on the other end (for the servo clevis).
Sorry, no scanned photos of the layout but the original Bandit is much narrower anyway so it probably wouldn't help much.
Get to work!!!! Jeez!!!! (no pressure)
Jim
I checked the elevator pushrods for my original Bandit. From center of elevator torque rod ball to clevis pin is 20-3/4". Two of the donuts are installed about 5-1/4" from the center of the ball (there is a flat spot sanded on these) while the other is about 4" from the clevis pin. The pushrod is 1/16" music wire within a yellow nyrod which is glued (with small donut spacers?) into the CF tube. 4-40 threaded link soldered on one end (for the ball clevis) and a 2-56 threaded link soldered on the other end (for the servo clevis).
Sorry, no scanned photos of the layout but the original Bandit is much narrower anyway so it probably wouldn't help much.
Get to work!!!! Jeez!!!! (no pressure)
Jim
09-30-2008, 10:38 PM
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RE: Show me your Bandit Install pix
Nick,
If there is interference with the servo cases and the fusleage skin, there is a simple fix.
Remove some material from the servo mounting plate in order to raise the servo cutout UP enough to provide clearance between the servo case and the fuselage bottom skin. Don't forget to add the doubler strips under the servo screw locations....fore and aft.
Also, rubber servo grommets are not required....there are no vibration problems in a jet.
Assemble the pushrods to the servo arm and the elevator horn before glueing the plywood "donuts" to the fuselage frames and the arrowshaft pushrod outer housing.
Don't forget....one servo arm points UP, the other one points DOWN.
If there is interference with the servo cases and the fusleage skin, there is a simple fix.
Remove some material from the servo mounting plate in order to raise the servo cutout UP enough to provide clearance between the servo case and the fuselage bottom skin. Don't forget to add the doubler strips under the servo screw locations....fore and aft.
Also, rubber servo grommets are not required....there are no vibration problems in a jet.
Assemble the pushrods to the servo arm and the elevator horn before glueing the plywood "donuts" to the fuselage frames and the arrowshaft pushrod outer housing.
Don't forget....one servo arm points UP, the other one points DOWN.
09-30-2008, 11:24 PM
#25
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RE: Show me your Bandit Install pix
Harley, thanks for the heads up on the volt meters, do they have the black bezel so they can be flush mounted from beneath a plate., kinda hard to tell from the pics. thanks Kevin
Nick, I will be rolling in Friday night and staying all weekend.
Nick, I will be rolling in Friday night and staying all weekend.