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03-18-2009 05:27 AM  8 years agoPost 1
pcinc

rrApprentice

Westfield, MA

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Anyone have any experience with one of these? I have a CSM 360 and trying to get it to work on a Futaba 9C. I downloaded the instructions and read them a countless number of times and still am not getting something. I tried flying with it Sunday and had no control of the tail.Holding in a hover I had to hold almost 1/4 right stick to keep it from spinning.At first it wouldn't work at all so I powered down and back up to give it more time to initialize. That seemed to work better. When I first lifted off, I had to hold a lot of right stick to keep from pirouetting. I landed and gave it 6 or 7 clicks of trim then hovered again. It was twitching like it had too much gain so I lowered it in my radio and it made it worse. I figured I went the wrong way o I added 10 to 15 to the original number and as soon as I tried to spool up,the Heli wanted to spin. I just got it light on the skids and there was no way I was going to be able to hang on to it if it got air born. After reading the instructions, this is not your typical Gyro. Anyone with any experience with this unit or any tips on how to set it up?

Thanks for any help or advice you can offer,
Peter

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03-18-2009 08:39 AM  8 years agoPost 2
nivlek

rrProfessor

Norfolk England

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First of all , the CSM360 did suffer from temperature drift . The way to reduce this is to first take you model out of your vehicle and let it adjust to the outside ambient temp for twenty minutes . Then turn the gyro on , do your range checks etc , leaving the gyro on for a few minuted to warm up . Then turn the gyro off , then turn it back on straight away and allow it to re-calibrate at operation temperature .
First fly the gyro in HH mode , use the trim on the tx if needed stop any rotation . Then change to rate mode and note the direction of any rotation . You then have to phsically adjust the length of the linkage to the tail to trim it in rate mode . This may take a few attempts , but adjusting the lnkage length will have no effect on the trim in HH mode .

At the end of the day , it gets dark .

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03-18-2009 08:50 AM  8 years agoPost 3
Busher

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Manchester, England

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I have owned one some time ago so I might be a bit woolly on this one.

The gyro as you probably know is a heading hold gyro, and one of the first to hit the market. You must first set the tail up as shown in the instructions with about 8 degrees of pitch on the tail for a start in hover trimming. I think from your post you may have the gyro function reversed, as you say the heli piro's on lift off and you have to hold stick in. Check the gyro function is indeed functioning in the correct sense, if not you reverse it by either inserting or removing the gyro reverse pin on the gyro. This is the little rubber tag on the case, pull it out or replace it as necessary. You must also check that the rudder push rod is free to move and has zero slop. Then turn to your radio, most csm gyro's seem to work on either side of the channels throw, i.e. 0 to 50% and 50% and above, from the instructions have a look at their sloping graph and work out which side of the graph you need to be to give you conventional and heading hold. Choose a channel on your tx which allows you to switch this function and plug the gyro lead into that channel. Plug your rudder lead into the rudder channel and plug your servo into the gyro. Check your rudder channel and gain channels have no subtrim or trim added. Set you radio up to the values shown in the instructions, and follow the setup routine in the instructions.
Then turn your radio on first then your gyro and don't touch your heli for 5 secs or so while it initialises. You will see the gyro do 1 of 2 things, either creep slowly to one end of the the throw (heading hold mode) or stay in the middle (conventional mode) flick your switches to confirm this change. Check your rudder sense is correct and check your gyro sense is correct. IF all is ok you can proceed to check the tail trim in hover only. Hover the heli in conventional gain mode and set up your tail to hold straight in the hover, this is done initially by adjusting the tail push rod til it stays straight in the hover, from this point you have the tail set up correctly and you can now switch into heading hold mode.

Hope this helps but if your unclear I will try to help you a bit more, but I haven't owned the gyro for a few years and may have missed out some tips. You could also contact csm direct they are brilliant, and have always helped in the past. I bet Colin will be pleased to hear someone is still enjoying his first heading hold gyro.

Good luck
Busher

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03-18-2009 09:39 AM  8 years agoPost 4
T.C.

rrKey Veteran

Nottingham. England.

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Ditto all the above, good helpfull setup up info.

Mechanical setup is vital, but they are renowned for that annoying drift.

Tony

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03-18-2009 10:45 AM  8 years agoPost 5
pcinc

rrApprentice

Westfield, MA

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Thanks for the tips guys! I just bought this Heli and the previous owner had it set up. He also was using a 9C and I copied his complete set up using a CAMP module.I thought I could get away with not going through a complete set up being he already had it flying.
What does the setting under the gyro menu do? In my 9C I can adjust a % value. What does this do if I'm suppose to use the end points on the gain channel to adjust the amount of gain?

Thanks,
Peter

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03-18-2009 06:07 PM  8 years agoPost 6
Busher

rrKey Veteran

Manchester, England

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Can you get away with just using a spare switched channel for the gyro gain? if so you could use that channel and just plug the gyro gain lead into that channel instead. I am not familiar with the 9c but with 9 channels you should be able to use a spare switched channel to do the gain adjustment. Then all you would have to do is adjust the end points of the heading hold and conventional gyro modes on that channel. Once you have it working then fudge about with the gyro menu at a later date.
If the gyro menu has 2 switch positions in it, you would want to set one point between 0 and 50 and the other point between 50 & 100, according to the sloping graph, however in reality there will be a point were there is a dead band where the gyro has no real idea whether it is in heading hold or conventional, so the settings are probably around 0 to 40 and 60 to 100%, hope this helps you decide, but I am sure someone with more 9c knowledge will be able to help.

Good luck
Busher

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03-22-2009 01:52 PM  8 years agoPost 7
pcinc

rrApprentice

Westfield, MA

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I decided to give this Gyro one last go before I replaced it with something I'm more familiar with and newer. I downloaded the instructions from CSM's site and set up all radio settings as suggested. Tested direction of servo and gyro, set pots and centered trim, sub trim and endpoints according to the manual. I fired her up and spooled up the head speed to just get light on the skids so I could get a friend to check the heed speed. So far all looked good. It didn't want too turn or yaw. I lifted off the ground and got into a hover and the Heli wants to turn to the right now instead of previously to the left. I was able to hold it with just a bit of left stick and I seemed to be able to hold it there with the exception of an occasional tail wag,almost like a hiccup. The Gyro never corrected after the hiccups so each time it did it the heli would end up turned a bit more. I was able to correct it and bring it back to center each time. I was doing this for maybe a minute just trying to see what the gyro was and was not doing then everything went south. The heli went into a pirouette and I could not stop it. I tried landing it and when it came down it was a bit tipped and went in tail first. If this had been just a pod and boom the damage wouldn't have been too bad but this is a scale Century UH-1B Huey fuse and it ripped the tail right off. I'm in for a pretty hefty repair. Hind site, I should have just replaced the Gyro with something newer and more familiar to me.
Any one know where I can get a tail section to a UH-1B Huey from Century? They show them as out of stock.

Totally bumming,
Peter

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03-22-2009 02:12 PM  8 years agoPost 8
Busher

rrKey Veteran

Manchester, England

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sounds like you need a new gyro or that one sending in for repair.

Good luck
Busher

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03-22-2009 05:28 PM  8 years agoPost 9
Flyinhelis

rrApprentice

USA - So. Cal. the​OC

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Busher is correct on how to set up this gyro. CSM is the inventor or headhold gyros and this generation gyro takes alot of work setting up. The old days this is normal, heli set-up was not plug and play like it is today.

Sorry to hear of the bad experience.

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03-22-2009 10:36 PM  8 years agoPost 10
pcinc

rrApprentice

Westfield, MA

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I agree with both of you! You can bet after the repair/rebuild, this Gyro will not be going back on it!

Thanks for all your comments and suggestions.

Off to find a new Huey tail,
Peter

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