I Have a Belt cp :-)

[kitenutuk]

Well the day has come where the heli came i must admit it looks good and i cant wait to fly it i found this site by chance i have been on others but there seems to be alot more info here i have a few issues (not that common for a rtf belt lol) after reading different sites and watching vids how tight do i have the blades MAIN and Tail in one place it says tighten in another it says the tail blades should hang down like loose? other than that i have had the blades spin up and it does a fair bit of wobbling utill higher rpm never had it off the deck and am brand new to this but am following Radds site thingy and reading quite a bit here n there so ill check all the linkages and measurements balace blades and let you know if it cures it i cant see anything bent so im going to presume all is well till i check the above out

[Ian 777]

Hi kitenutuk and welcome to the Belt CP forum:thumbup:

The Belts is a great little heli when it's set up, but as you''ve read there can be issues with its supposed RTF status

Firstly the blades need to be tight enough so the head does wrap up when you spin her up but also loose enough to fly lead and follow slightly as the head speed changes, that is no slop and slight smooth resistant to being moved in the blade holders.

Do you think the head is wobbling still when the blades have had chance to fly straight?

Try running it until the wobbling stops and slowly close the throttle, if it does'nt wobble on the way down your probably OK.

If it does it may be that the blades need balancing or the mainshaft is bent (I know that seems crazy on a new heli but Esky seem to have a problem with them)

The feathering shaft could be bent. The feathering shafts are notoriously weak on the Belt cp head
although they bend to save damage to the rest of the head and are dirt cheap.

Are the blade holders in line with one another and the blades horizontal to the head?

If you havn't flown heli's before then use training gear and take it steady, best use a sim to get used to its reactions. If you havnt got one there is quite a decent free one on the net (not FMS)

All the best Ian:)

[kitenutuk]

ill explain a little more at first its ok but as speed gains it wobbles then seems to level out blades look like they are in line and dot need tracking have not balanced them as yet ad i have noticed the distances to the paddles are out by about 1-1.5mm ill try ad sort most of it tonight and give an update i have training gear amd will be using it i also have the usb lead but am having trouble getting it to work i have tried a few sims none will work even when i switch the hidden switches most controls can but the throttle wont eve though its there in calibration so that has me stumped .

[Ian 777]

Yeah mate I gave up with the usb lead and stock TX, even when I got it working it still needed recalibrating every 2 mins. I bought the Esky 0905A plu and play sim TX wich I think you can get for about £10 to £15 on Ebay. This works fine youll save its price on batteries and theres no need to keep taking the back off and changing the switches overwhen you want to fly your heli.

This is a link to a good simple but accurate free sim on the net.

http://www.marksfiles.net

When you look at the Flybar / paddles tonight, go through the whole head to make sure its set up Ok with no binding or stiffness, mine was quite bad. Check the swash is level
( although it will need very slight tilt to the right ( about 1 link turn) to hover straight, this is to compensate for the side draught from the tail rotor.

The set up threads will point you in the right direction

Let us know how you get on:)

Ian

[helihathnofury]

Hi Kitenut
Welcome to the best Belt Cp forum around. Glad you found us by chance - your bonus, as there are some great oracles of advice on all things Belt and RC copters here. We are all mates here, and try to help each other out; so don't be afraid to ask about anything. As you have probably noticed, there are some good threads around to get your teeth into, and we have some aces on setting up the Belt.

Good luck and stay here!!!!!!!!!!!

Mike

:hug:

[kitenutuk]

mind boggleing springs to mind there is so much to check and sort even with the rtf guess im going to have a busy night ahead and i think ill be sticking around for quite a while will keep you all updated later on tonight thanks for all the advice so far its apreaciated;)

[helihathnofury]

And if you get a prob, might be worth getting a pic and letting us see...really helps, what was that David Gates song, "If a picture paints a thousand words..." and so on!!!!!!!!

LOL

Mike

[kitenutuk]

i think Ian 777 might be right with the bent shaft thing he said<object width="425" height="355"><param name="movie" value="http://www.youtube.com/v/cYEL0QEeZpY&hl=en"></param><param name="wmode" value="transparent"></param><embed src="http://www.youtube.com/v/cYEL0QEeZpY&hl=en" type="application/x-shockwave-flash" wmode="transparent" width="425" height="355"></embed></object> i know the quality sucks but im hoping there is enough there for somone to make a decision on if it is or not?

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[Ian 777]

Hard to tell but you'll have to get familliar with stipping and rebuilding it any way,

could be blade balance

could be feathering shaft ( the one that allows the blade pitch to change)

could be main shaft

Try running it up witout the blades ( not above half throttle) see if the head runs out of true

to get the feathering shaft out on that head you need 2 long reach 5.5 mm sockets
which I'll gladly give you if you have trouble finding any ( I don't need mine as I've fitted a different head on it)

Have you reset the paddles yet?

Don't get discouraged when youv'e tweaked it a bit youll have a proper 450 size heli for an amazingly low price:)

[kitenutuk]

ok i did as you sugested and took the blades off the heli and span it up to about a quater of stick with trim down and the head still wobbles the paddles are ok was just my measuring they both equal i have a pitch gauge and balancer on order so cant do much till they get here there is a guy who said he might be able to help me set it up but have only met him once and dont know if i can get in touch with him so i dont know what to do now ? any sugestions? and please be basic lol im brand new remember thanks for your help so far

[helihathnofury]

There are other possibilities:

you may have a dodgy main gear, which might have some teeth chopped - give it a close look.[A bit worth upgraging!!!]

the main shaft might be slightly bent - another pEsky weakie - not so easy to check as you have to extract the whole head and take the shaft out. Having checked it on a v v flat surface [kitchen marble/granite worktop or sheet of glass], it is a bit worth upgrading too. The Align Trex shafts are of much better machining, [especially the carbon steel] and will take the punishment.

Hope we have been of help.

Mike

ps keep us appraised of your progress!!!!!!!

[Ber60]

Hi kitenutuk
I used to have the same wobble you have. what I did was a total rebuild of the head.
I have to warn you it is a leghty process.
You start with only the main shaft and gears (remove the whole head) spin it up and check for wobble, if there is wobble strip gears and replace or straighten them.
Then put on the swash (only the swash) and links of the servo's and check for wobble
Next mount the control arm set and check
Followed with the main blade housing (without the bladeclamps, feateringshaft ,central plug and remove the whole flybar and holders) before you place it on the main shaft check if the hole is still round (mine was oval from overtightning) and check for wobble
Next mount the bladeclamps , feateringshaft, and central plug( if the central plug has to much play give it a layer of clear tape so that it has a nice fit) and test
Last install the complete flybar without the paddles, set the paddle control arms level, measure the lenght of the steel flybar left and right, they have to be equal , and test for wobble
Remount the paddles approxim. 62 mm (page 17 of manual) and test


Pfffiouw
Hope this will help to find your wobble

[helihathnofury]

You see what i mean.............these guys are just so so good.........

:noteworthy :noteworthy :noteworthy :noteworthy :noteworthy

[helihathnofury]

Erwin, great lead!!!!!! [As always mate]
Also, check the blades for cg and balancing - a good habit to get into for EVERY blade pair you get. Have a look at the "Finless Bob" vids for that procedure. The pEsky wood blades are awful, period, but if you cg then balance them they will track OK. Sure enough, you will ask "Are there better ones?", to which the answer is "Yes", the Align 315pro woodies. Most of us use them and they are great and relatively cheay upgrade.

Mike

[kitenutuk]

thanks guys ill get onto it as soon as i can i know about the align 315's going to get some when i get the heli sorted and im a bit more used to it i got the heli from a ebay uk shop and have sent msg saying i wot be leaving feedback untill i find out whats up with it as it sure as hell aint RTF lol i have watched the finless vids the c.o.g. seems ok still need to balannce though and waiting on that to arive its nice to know theres alot of helpfull people on here a great comunity to be part of dont worry i wont let the little bugger beat me im sticking around for a long time ill let you know how i get on as soon as i can thanks again Jamie.

[Ian 777]

How did you mount the battery Jamie?

The COG is ususally too far back unless you move it forward a bit:thumbup:

[kitenutuk]

heres some pics if they help am not sure if servos need sorting these are after initialising the heli
http://farm3.static.flickr.com/2307/2435195352_2c49d863aa.jpg
http://farm3.static.flickr.com/2195/2435194906_c585ef5e77.jpg
http://farm3.static.flickr.com/2360/2435194714_0e0e49a3b5.jpg

[Ian 777]

OK Jamie

Did you say you watched Finless on CCPM set up? If not Watch them they will give you a good understanding of how to set your head up

The servo arms should be at 90 Degrees with the sticks and trims central. With the Esky transmitter you have no subtrims so you will just have to get them as close as possiblle and use the linkages to compensate if the splines on the servo shaft wont let you get them 100%

*Disconect the motor from the ESC and switch the heli on,
*Set the sticks and trims to center position ( half throttle )
*Set the servo horns as close to 90 degrees as possible
* Use the linkages to set the swash level and the pitch to 0 degrees

This is a highly abridged set up but it should point you in the right direction.
The left hand rear servo is at least one click out on the servo splines
You really need a swash plate leveler to set that but get it as close as you can by eye
and then adjust out any inaccuracy using the linkages when you start flying it

The blade pitch really needs a pitch guage but if you carefully line up the leading and trailing edge of the blade with the fly bar by eye, again you'll get it pretty close

The manual explains how to adjust the tracking.

Flip the Idle up switch back and DON'T touch it again untill you can hover safely

I can see in the photos that the swash is tilted slightly forward The slight tilt to the right i.s probably about right to compensate for tail rotor wash

Were here for you if you have any difficulties:)

Ian

[helihathnofury]

Ditto what Ian said. You will get used to constantly disassembling and assembling your beast, and after watching the set-up vids, you will know what to look out for on the rebuilds. A couple of handy tools are a 5.5mm hex driver, a blade balancer, and a pitch gauge. I find the latter two invaluable in reducing vibration.

Good luck, Jamie

Mike

[kitenutuk]

recived the 2 5.5mm sockets from Ian 777 (thanks so much your a star) for the feathering shaft and the pitch gauge has come so will see what the problem is later on with any luck will let you know how i get on either tonight or tomorrow wish me luck im off to strip the thing down and try to set it up if i can :).

[helihathnofury]

Jamie, that last pic [view from the nose] shows a slight tilt of the swashplate to the left. Ideally, you want a slight tilt to the right, to give a bit of compensation against the tail rotor thrust [pushing you to the left when viewed from the rear].

Mike

[Ian 777]

Sorry: yes your right Might Mike It is tilted slightly the wrong way.:DOH

[kitenutuk]

well after strippig it umerous times ad following what everyone said i did as ber60 said ra it with shaft and gear and there was the wobble took out the shaft and gear and the op cog seems to be warped so hopefully getting a new one free and thanks for all your help especially Ian777 for the sockets and Grant_beltcp for helping me set up some of the swash pitch etc will keep you updated as and when im learning to fly it :)

[helihathnofury]

Keep us informed on your progress in the surprise, surprise "progress report" thread!!!!!

Best of luck,

Mike

:hug: