Official OC california heli flyers

[Airboss]

It's going to be something like this, well just the airframe first. And it will have one important feature... 3D capable!;)

http://www.helifreak.com/attachment.php?attachmentid=38002&d=1202539686

now thats got my attention . way too cool Kevin, and 3D capable. does Lowflyer know about this?

[bullseye1]

Kevin, I think you need a bigger park, I don't think AP is big enough for this monster.

[lowflyer101]

It's going to be something like this, well just the airframe first. And it will have one important feature... 3D capable!;)

http://www.helifreak.com/attachment.php?attachmentid=38002&d=1202539686

darn, FLYBARLESS again :noteworthy .

i really dig the msh Protos man, hope to see it this weekend or next. Protos look like it got 1 way bearing in motor pinion also?? and the belt running thought motor pinion , therefore, tail /belt static will discharger direct to motor, no more lock out. the reason i stop flying trex 500 was too much lockout .
only thing i am worry is the belt quality of the Protos, hope they are included a first quality belt, cuz the belt running thought too much live active on the heli (maingear and motor pinions right??) main gear strip or worn will chew out lot of rubber on the belts. no needs to say chicken dance

[fireup]

Hum, didn't think about the static of the belt. Going thave to do a static reading and compare it with T500.

The belt size for the Protos is bigger than the T500. The T500 uses XML size/type while the protos uses HTD 3mm size. The HTD style belt/pulley is a smoother and stronger running drive system then the XML type. But we'll see how it hold up in a crash. There's a lot of surface contact for the pulley/belt so I don't think the gears will strip, but I'm not sure the belt will last.

The drive system of the Protos was the main reason I decided to start on the Chinook project. It's going to be a lot easy to sync the two heads than to fine the right size bevel gears. As for as 3D capable, it seem to work in my head, so I don't see why it won't work for real.:) Basic flip and invert hover is all I hope for, for first stage. I need some cheaper blades for maiden flight.:)

[Airboss]

you get static electicity from the rapid movement of the air molecules around the entire heli . the entire thing is a generator. carbon rotors smashing into the air

[JaggedEdge]

you get static electicity from the rapid movement of the air molecules around the entire heli . the entire thing is a generator. carbon rotors smashing into the air

It'll power itself. :cheers

[Finless]

Very true about anything moving through the air generates static.... BUT if you have to major portions of the heli isolated from each other then one are can build a larger potential than the other. It's well documented what a Van De Graph generator is.... A belt system if isolated from say the frame can in fact build a very large potential from static build up and ARC to something on the lower potential area.

This picture kinda shows this can happen! Look at the red circle in the picture.. See the static discharge arcs?

http://www.helifreak.com/attachment.php?attachmentid=38417&d=1202864966

Bob

[bullseye1]

that explaines all the lock up's I had with the LOGO10, same set up in your pics. Bob.
I almost done with the logo 10 rebuild again, It's been on the back burner since I started playing with Nitro's, I'm going to make sure I ground the crap out of it when it's done.

[Airboss]

that explaines all the lock up's I had with the LOGO10, same set up in your pics. Bob.
I almost done with the logo 10 rebuild again, It's been on the back burner since I started playing with Nitro's, I'm going to make sure I ground the crap out of it when it's done.

you might have to dig a big hole to ground the crap out of it or just tether it with wire to a copper rod . JK..
Finless, I read a while back (2 yrs) about some guys that were grounding everything on their helis and still getting lock outs.WTF? should we be more concerned about this?

[Finless]

You want a HUGE amount of research and info on it? Go read the sticky in the Trex500 forum! There are simple tests that you can do and easy things to make sure the belt Van De Graph is not a problem.

Bob

[Airboss]

thanks will look into it , does the problem diminish with the TT drive vs belt?

[Aox]

Flying a tandem upside down is going to be a tricky affair. Normal heli ability won't translate directly over.

The tandem design uses cyclic for yaw. If I'm not mistaken, when you go inverted, your yaw will be reversed. Doesn't seem like a deal breaker, but it'll be interesting if you've got muscle memory trained to keep your single main rotor bird inverted properly. Just another skill to learn eh?

I've been watching the Twin Rexx development for quite a while now, and I'm fairly sure my SE is going to be sacrificed for one of the heads of a Twin Rexx.

Is the belt drive of the Protos "keyed" or "toothed" well enough to not skip? I'd trust a shaft drive for a tandem, but the thought of using a belt when blade sync is so freakin important scares the hell out of me.

Can't wait to see what you come up with. I love tandems. Some day, I'd like to make a scale Kmax. There are gyro systems that'll do that nowadays.

Anyway, good luck, Kev. Looking forward to seeing your progress.

-Aox

[fireup]

Well, spool the Protos up for the first time tonight. I did have some static issues. My cyclic servos would twitched a little at half throttle every 2 seconds. I sprayed some silcon grease and the problem went away. I should have filmed it before I did the spray. I didn't even have to put that much silicon and it went away. Wonder how long it will last.

Flying a tandem upside down is going to be a tricky affair. Normal heli ability won't translate directly over.

The tandem design uses cyclic for yaw. If I'm not mistaken, when you go inverted, your yaw will be reversed. Doesn't seem like a deal breaker, but it'll be interesting if you've got muscle memory trained to keep your single main rotor bird inverted properly. Just another skill to learn eh?

-Aox

I'm going to have to rethink this a little. But if this is the case, I'm going to have to program my mixer to account for this...


Is the belt drive of the Protos "keyed" or "toothed" well enough to not skip? I'd trust a shaft drive for a tandem, but the thought of using a belt when blade sync is so freakin important scares the hell out of me.
-Aox
There's a lot of contact on the belt, it will not skip.

[Gmoney]

With regards to the twin rotor stability a second gyro may help with stability..One question have you guys even tried to fly a twin rotor yet? Would you like to try and fly a traditional twin rotor? I know a guy that has one and he may be willing to let us have a go at it for a day..

Gmoney

[Airboss]

There's a lot of contact on the belt, it will not skip.

famous last words, jk. use a shaft Kevin think about how moch static 2 belts is going to make.

[BiggerDanno]

thanks will look into it , does the problem diminish with the TT drive vs belt?

It is the belt drive itself that generates the static. Generally caused by the two pulleys being made of different materials, specifically, one of metal, one of plastic, though both being plastic will also do it, but to a lesser extent. Problem does not exist with TT.

If you ground the boom to the motor there will be no build-up of static as it will constantly discharge. You just have to make sure that you have a good ground. Check for continuity between the tail housing and the motor.

[fireup]

famous last words, jk. use a shaft Kevin think about how moch static 2 belts is going to make.

There will be only one belt and it's not going to have a boom so no static problem there.

[Finless]

Kevin, the Gohbee belt drive for the motor was generating static and blowing castle ESCs in the early design. They fixed it with a CF grounding plate. So not having a boom doesn't mean the belt wont generate static!

Bob

[Airboss]

sounds like Kevin is going to have his hands full. that must be a long friggen belt . do you have any pictures of your build ? it raises many questions ?

[fireup]

sounds like Kevin is going to have his hands full. that must be a long friggen belt . do you have any pictures of your build ? it raises many questions ?

Haven't start building yet, just got some parts in today, the long friggen belt will be 1500 mm circumference. Here's the design so far. The motor will be in the middle.

http://www.helifreak.com/picture.php?albumid=759&pictureid=5265

[toro]

Found my synergy tail kick issue. It was the remote Rx lead from the main rx. It had a broken wire in it (the gray signal wire). I can wiggle it, and I get the same servo glitch that was affecting me in flight. New lead... I dont know about the governor though.... Still looking for a multi gov somewhere....

[Airboss]

Haven't start building yet, just got some parts in today, the long friggen belt will be 1500 mm circumference. Here's the design so far. The motor will be in the middle.

http://www.helifreak.com/picture.php?albumid=759&pictureid=5265

holy ...... thats a long MF belt . 2 torq tubes are looking a lot sweeter.

[Airboss]

oooooops , those torq tubes would have to be tough to keep from twisting. so the belt has a slight advantage. cool project Professor Kevin.

[Finless]

Professor? More like MAD Scientist ;)

Bob

[Aox]

I think you're going to have alignment issues with the belt and two gears? And where are you going to put the motor? Are you going to loop the belt around the pinion pulley for friction? Have you considered maybe a motor with a pinion driving a shaft with two pulleys on it, located somewhat rearish to offset the weight of a maybe frontish mounted battery? I think your idea is to keep one long belt, but I can't see an elegant way to accomplish it unless the motor is mounted aft of the rear rotor head?

What's up with Black Starr today. Fun fly? Radio impound? Hows that affecting the heli pilots?

-Aox