Funny thing is.. The Standard coreless analogs have identical specs. So Digital has nothing to do with current draw. Check these out:

http://www.hitecrcd.com/product_file...41/HS985MG.pdf

Nope, All I did was move the cowl back. Balance came out perfect with all servos in the back (single rudder servo)

Radar,

Sorry I gave you the wrong numbers. I'm talking real world, not the manufacturers specs

Only difference is the deadband width. Crazy. I never knew that.

I'd be willing to put some money on that published spec being *wrong*.
Digitals by design are pulsing the motor continuously (or nearly so), and the standard coreless aren't.
Maybe "peak current" and "idle current" are the same, but I'll bet $$$ to donuts that the "per flight" consumption of a digital is FAR above that of a comparable coreless.

Anyone know?

I never knew that either. I use Hitecs for the ability to program and really wish JR allowed that. I set all deadbands to 1 usec and set my radio trims to one instead of 4 and get almost real time movement.

I love the 5995's because they are titanium gearsets so there is no need to replace the gearsets after a bit. My 5945's need new gears and all of my JR servos except the 8711's need new gears. All will get replaced with the 5995's.

I jsut got my Specktrum module for my 10x so it's time to go play for a bit and just in time as I am also heading to a meet tomorrow in Milford PA so what better time to try it out

From the spec sheets.. The digital maintains closer to zero deadband due to the pulses. As far as torque to the servo.. It's no different then taking a AA battery and hooking it up to a toy truck motor. Then taking a 9V and hooking it up. The 9V will make the engine go faster and stroger. The spec sheets telling me that the torque increase is simply due to the constant current draw when the servo is in use.

I would think you are spot on. No load versus flight loads, even when the servos are neutral are way different, at least you would think that. Sitting on the ground, the servo is not fighting to hold center as hard and it is when flying straight and level, you know that even straight and level there is some load on the servo espceally if any amount of trim is used. At that point the servo is under constant load and using more battery than stiitng on the ground.

JR servos pulse almost full time, that's why you here them buzz all the time when sitting still on the ground, they are trying to hold the surface. Hitec buzz as well but not near as loud, maybe its the deadband thing that you can set in the Hitec digitals because mine are dead quiet when set a 1 usec but noisy as all get out when the surface is deflected and that is with no binding and not going against the bevels.

Imagine what they sound like in the air [X(]

Bottom line is.. These servos have been out for ages. As far as technology goes. We're all just getting screwed by marketing. The little digital board just keeps getting updated to let more current go through the servo. Thus making the torque higher. So it's not like there's any real technological break throughs going on here. It's just the demand for higher torque due to newer flying types. AKA 3D/high alpha and larger aircraft. Anyway.. So i guess if I used 5955's for 5 servos.. Flew a flight for 10 min.. Constantly doing 3d.. Based on 3400mah(mili amps per HOUR).. 3400 x 5 divided by 16(10 minutes meaning 1/6 of an hour) = 1062. I think I'm heading in the right direction? Maybe? Maybe not? So a 4200mah pack for instance would last for 3, maybe four 10 minute flights????

You are not too far off. Whaturi, uses all 5955's on his 35% Extra. At first he had twin 2700mah NiMH packs at 6volt and got about 5 flights before he would charge. He went to twin 4500 NiMH packs and he has not flown enough yet to give a good estimate because he heard a loud snap doing a wall and found the one wing to be spilt at the root Oh yea, his flights were 15 minutes on average and he ran the batts down to 5.8 volts loaded at 1 amp

This is good stuff, I'm actually learning something here [sm=thumbup.gif]

We might be learning something. I'm just guessing. LOL. So he has all 5955's. Well atleast somebody is running them.

Yup.. Here's a poled servo. Check out the stall current.

http://www.hitecrcd.com/product_file...22/HS475HB.pdf

What do you think of that engine lou put in his cap? The bmca or what ever it is? It's Fricken 325 bux!

If Lou says it's a good one, beleive him. I have always respected his opinion as well as Aerobobs and a few others

I'm all about it. Inexpensive gas alternative to the Mercedes that you have! LOL. So you're a pilot? I'm a Air Traffic Controller.

Yea, but your digging deeper than I have and I know a few that run them. If my memory is working I'm pretty sure Aerobob is using 5955's in pretty much everything he has as well

I like my Mercedes...absolutely the best customer service I have ever seen and I'll gladly pay extra for that.

I used to fly for Rosie O'Gradys Flying Cirkus in Orlando Fl back in the early 90's doing skywriting and airshows in Super Stearmans and Agcat bipes and the occasional stint in the odd Extra 300 or Cap232. I got my aerobatic training from Mike Goulian in an Extra 300 and Cap232. I've been lucky enough to have Col Joe Kittinger as my inital instructor in the mid 80's and also did a lot for the Make a Wish foundation out of Orl Exec Airport

We got into a thing with the FBO there where I had a 182 converted to handle wheelchairs and would take the kids on low and slow flights for what was supposed to be 15 minutes but depending on the kid, sometimes it lasted for an hour at a time. I have to tell you that out of all I did in full scale and so far in RC, working with those kids was the best thing I have ever done. They gave me so much joy just by hanging out with them. I was a part time limo drive during that time so I got to meet a lot of them. We never got paid for what we did but just seeing them enjoy themsleves and knowing what they were in for was just the most amazing thing I have ever been a part of

I was diagnosed with thin walled arteries going into my heart at 40 years old after a heart attack and mild stroke so that blew my medical out so I have not been PIC for a long time. I never did any line flying, thank god...that woul have4 drove me nuts

Well, Bubba, you're memory hasn't gone.... Yes, ALL of my airplanes, ARE exclusively 5955's, and I will not run anything else in a large airplane. There ain't a gear set out there that holds up as well, and that is worth a premium to me because it means "uptime", and "reduced maintenance". Both of those are classic "good things".

Re battery consumption - I just converted to A123 cells, using the FMA Cell Pro charger. That configuration does a real FINE job of analyzing capacity, and measures the ma put back.

The other day, I flew a lot of high-ly stressful, high G aerobatics on my Cap. Total of 70 minutes airtime. Total ma used was 895. And that was 8 flights. So... my 5955's drew about 110 mah through those flights. Meaning that the 2300 mah capactity of the A123's left me PLENTY to spare.

Next up --- +5v, fast response, 5A linear regulator to permit me to run my ignition off the A123 Rx pack. Thus dumping the ignition battery. Another "good thing"..... assuming it works. I'll post back with results after I run some tests.

d

All great info there Bob [sm=thumbs_up.gif]

I'll be gone the rest of the evening and all weekend folksd. Gotta go get my butt whooped in Intermediate by a 10 yr old again [sm=red_smile.gif]

l

Dumb question ...

I just started putting together my Cap and have made an interesting observation. There is very little wood in the fuselage sides, making it kind of difficult to mount things like switches. There is one small square cut-out that you can use to mount a switch, but where are you suppose to put the second switch for the ignition? I always thought you should keep the ignition "stuff" at least 12' away from the other electronics. I can't seem to figure out where to put the second switch.

Anyone ????

Pictures would be nice (please).

-R

add extra lite ply to the side and you can add all the switches and bat charger connect you want. i add the ignition switch in the top part of the removibale cowl. if you want any pic gust say so. and i will put some up.

well, after 2 months of gathring parts, breaking in a new engine and assembling the plane I am finally ready to maiden my Cap tomorrow. This is the most advanced plane I have ever owned and assembled. In a way it will be a test bed for me and gasoline engines as well as giant scale planes.

Dl-50 engine
Xoar prop 22-6
J'tec pitts muffler (large Chamber)
Digital Hitec 5645 servos
carbon fiber push rods (all control surfaces)
Spektrum radio
Elite HR-1500 High Rate Rx 6v 7.5 impedence (wow is this thing light)

Hey guys, here's a general contruction question (I'm sort of new to ARF's). In the step were you glue the stab in the tail, how do you actually glue it in without smearing epoxy all over the stab as you slide it in? It seems to me, that no matter what/how you do it, you'll end up with glue all over the stab (at least one half of it). And since the glue will be spread out thin, will there actually be enough glue left on the blasa to hold it firmly?

Did that make sense?

Did you use epoxy, or CA or polyglue?


Thanks.

-R

I used 30 minute epoxy then used denatured alcohol to clean up the mess on the other half of the stab. there is really no getting around it. Now when you do this some of the glue is going to be wiped away so what I did is cut the covering under the stab before the glue dried and mixed a little more 30 minute and added it in a nice fillet on the stab and fuselage sides. Mine has held up to the pounding I give it ever since and all you will have is a very small patch on the bottom at the back