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HelicopterScale Model RC Helicopters › vibration on a MD500 fuse with a TT60
01-03-2010 06:09 PM  7 years agoPost 1
precepter

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Longview, Texas

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Guys
I have recently placed my first scale heli together. It is a TT Md500 with a rap 60 using the tt.70. I had read most of the threads involving the headspeed on this setup. I know that TT recommends somewhere around 1400. I have found that mine likes a little higher head speed than that. I am still using the factory wood blades so these could be contributing to the vibration. Most of my vibration is on spool up, once the head speeds up it seems to do better. I am plannig on putting either the TT carbon blades 680 or a set of Mavrik 680 or 690. I am wondering if what I am experiencing with these wood blades is normal, will it get better with carbons? BTW the blades are tracking good.

Thanks in advance for any help
Eddie

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01-03-2010 06:59 PM  7 years agoPost 2
Wayne Parrish

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Apex,NC,USA

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Of course you need to make sure the main shaft,feathering spindle and tail rotor shaft are not bent.Any thing else in the setup that needs to be concentric should be addressed. The blades should be changed out first and it could very easily cure it all. Wood blades that are perfect one day can change next time you fly due to moisture content changing. Be sure to check the balance on the tail blades or change them out to glass or CF. Good luck

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01-03-2010 07:05 PM  7 years agoPost 3
precepter

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Longview, Texas

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Thanks
I will check what you have recommended, one thing however before taking it apart it was doing great.

Eddie

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01-03-2010 07:31 PM  7 years agoPost 4
marc28

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new york

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Also check your mounting of the mechanics, they should be supported top and bottom.Do you have pics to post,others may see something that you're not seeing

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01-03-2010 08:04 PM  7 years agoPost 5
dialarotor

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Traverse City, Michigan

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Vibration ideas

I have used the TT Wood blades for several years and no real vibration problem. Do make sure there is a little lube on the rubber dampers for the spindle shaft. Can get sticky with age, but a drop of lube or fuel should take care of that. I also make sure the tail blades are sort of lose, not sloppy lose put able to move in the grips.

Now the big question. When you are done flying, do you fold the mail blades back and put them in a foam blade holder arrangement. If so
pick one ball link on the main blade grips and pop-it off when stored. Reconnect next time you go fly. I would get my blades in track and all would be good and then fold them back and the next time out they would go out of track again. Finally an experienced FAI pilot told me to try popping one link and taking the stress off the linkages when the blades were folded back. Anyway, end of tracking problems. Also with warm and cold weather season here, take your heatgun on low and go back and reshrink the covering on the TT Woodies and you will see it shrink down nice and smooth, but just go slow and on low heat. You will like the Maverick 680's for your TT70 combo.

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HelicopterScale Model RC Helicopters › vibration on a MD500 fuse with a TT60
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