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Other › tail rotor problem
10-11-2005 10:55 PM  12 years agoPost 21
crewchief_432

rrNovice

Groveland,fl.

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fixed it for now
I put a stock tail pitch slider on and it holds fine now. there is a little tail wobble but I can live with that till I figure out why the upgraded one isn't working. The metal one is wider by 1.5mm, I wonder if that could be the problem. Also I want to thank everyone for there help. Thanks, Jeremy

Did I do that ???

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10-12-2005 07:53 AM  12 years agoPost 22
Campbell Grant

rrApprentice

UK

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Crewchief_432

I have had the same problem. Here is a quote from my initial posting: -
In order to prevent the nose of the bird from continually turning to the left I had to use about 3/4's of my right trim. This meant however that the tail pitch slider was nearly maxed out, leaving very little for a right turn. What I noticed is that the plastic arms on the Tail Rotor Control Set, that the ball linkages are screwed to, are bent in towards the boom (about 1mm from being straight), effectively shortening the linkages and reducing the amount of pitch at the mid point on the slider .
Are the arms on your "Tail Rotor Control Set", HT7001L, (page 9, step 3, no 125 in the manual) beding inwards?

I am now using the longer ball linkages and it resolves the issue.

Campbell

I HAVE LESS HOVER THAN THE BOVER

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10-12-2005 05:27 PM  12 years agoPost 23
bo105

rrNovice

Singapore

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Hi Crewchief,
Make sure your tail drive gear assembly is working fine.

My Trex also has the same problem except it happens during the middle of a flight and I ended up with a bent boom and stripped main gear. Checked and found the gear linking the belt on the tail drive gear assembly (on main body) has come loose. Have to fix it with superglue and now it's ok.

One way to check is to rotate your main blades clockwise and try to stop your tail rotor from turning. Do not use too much force to stop. If it does stop, fix the tail drive gear assembly.

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11-05-2005 11:26 PM  12 years agoPost 24
Riker

rrNovice

Barrie Ontario

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where do I put the glue? Do I have to remove the pully to glue it?

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11-05-2005 11:55 PM  12 years agoPost 25
zrdcorp

rrApprentice

Caguas, PR

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Check the manual.

I would not recommend it, but if you are careful, you may put the CA without dissasemblying it.

In the same place where you can 'see' the belt and check for tension, that is the gear whre you put CA where the metal rod touches the plastic belt gear.

Again I would not recommnd doing this after assembly, but if you want to try make sure no CA is applied to the belt, or the frame or the outside of the gear, or.. you get the point...

Roger's Law: If it is worth doing it, it is worth exceeding it.

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11-06-2005 06:19 PM  12 years agoPost 26
MikeInMobile

rrElite Veteran

Mobile, Alabama

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You can glue the gear on, but I do not recommend it. If any glue gets into the teeth of the drive pulley, it will never run true. I usually tried to keep a couple of these units on hand as they will fail at the worst moment. I am now using the new Microheli unit with great success. The gear runs true, and the drive pulley is machined. I did, however, have to change out the bearings that came with the unit as they were a real POS. I am now using Boca hybrid ceramic bearings for this peice and it runs smooth-as-silk (even with my 3200 RPM head speed). With the stock unit, I had to continuously change out the tail drive unit as the bearings would come unglued (my Trex is custom), causing the destruction of the gear. With the Microheli unit, this is impossible (making me VERY happy).

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11-06-2005 06:54 PM  12 years agoPost 27
domenic dales

rrNovice

Scarborough Ontario

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THIS HAPPENED TO ME

and this is what fixed it!!

The tail servo that i could'nt use was a futaba s3107 and no matter what i did i couldnt get it to hold in one spot it either spun left or right.

I thouht mayby it was the gyro that was too sensitive. NOPE
i changed the tail servo to a hightec hs56br and it was gone they both had the same spec's on the box and the futaba had a better time/deg

no other adjustments after that.

so Good luck to you sir.

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