roadtrip

Thanks, T/M. After what you said about teeing up to the down on the retracts, I had to go and check to see if I did it right. If I understand, the nipple on the bottom of my valve is the outlet (down). If this is correct, I should be good to go, as that's what I did.

KevinM

Ummmm......

Guys, don't Spring Air 700 series operate on the principle of "air -> up, spring -> down"? (As I understand it only the 800 series use air both ways.) That being the case, your brakes will have to be Tee'd off the main supply as there is no pressurized line for "down" to use.

twinman

My Feedback: (2)

KevinM
Yup. I corrected above. I was thinking about two way retracts. Brain is going with hair.
The proportional valve is from ULTRA PRECISION TECHNICAL SERVICES LTD. at http://www.up-1.com/index.htm
Did not want to skid expensive tires down the runway.
Good luck and keep me straight......getting older.
Twinman

Carlos Murphy

My Feedback: (72)

My brake drums have a knurled surface for the O ring to press against and the directions say to fill the drum with Vasoline, press in the brake unit expelling the excess and wipe it off.
I think the purpose of filling the unit with Vasoline is to keep out dirt but it dosen't seem to hinder brake operation.
Without the Vasoline the O rings would wear out very fast and woulden't work as smooth.

roadtrip

T/M, I'm at the part where I have to decide how I'm going to connect/disconnect the air lines for the brakes and retracts at the booms for seperation. Do I remember correctly that you said you will not build yours to seperate at the booms, just the center pod, or was that someone else? In that case the air lines would only require a quick disconnect at the root for the brakes and retracts, right? If I see this right, I'm going to have to put in a quick disconnect for the brakes and retracts at each boom where the center wing sits, run another tube from each boom through the center wing, coming out where all the rest of the speggetti comes out at the root and two more quick disconnects there for the center pod plumbing. (WHEWWWW!!) A total of 6 quick disconnects. I just wanted to clarify that before I start cutting into the center wing for routing the air lines from the booms. (Not mentioned anywhere that I can find). Also, I just wanted to clarify one more thing about the back hub of the brakes where the strut butts up. I assume it's a normal thing for it to move freely a bit, as the strut itself stops it from spinning around. (Not like on our helicopters). I haven't seen anything mentioned about this, so I thought I'd just throw that on the table.

twinman

My Feedback: (2)

VQ number one did not have quick disconnects at the booms to save a buck....PUT THEM IN!!! too much trouble for access. Number two that is approaching completion has, yes, you said it six quick disconnects.
Brake back plate does move, but seems OK.
For the brake valve, what I did is to tee into the elevator and use "Down" to activate the valve.
Twinman

roadtrip

Thanks T/M. I'm beggining to feel more confident in putting this guy together; right the first time. Only headache I seem to have left, is the darn strut on the right side won't lock in at the retract block. It tends to rotate with little force, so I'm going to make them both permanent with liquid weld!!! I don't see any reason to want to remove them anyway once they're in and if I do, I'll just use heat. That and the flap servos don't want to play the game by giving me the full trhrow I need. I'm using the round wheel, but maybe I need to bend the push rod into the half-moon shape as per the manual. Haven't done that. DUH!!