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HomeAircraftHelicopterFuel-Helicopters New or Limited ActivityElyQ › Finally Vis50Comp airborne
02-05-2010 01:04 AM  8 years agoPost 1
RodneyL

rrNovice

Rossville GA

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Hey all! This is my first post on RR. I hovered 2 tanks in my new vision comp. I am pumped! I had 2 minor issues, my muffler became loose on the 2nd tank and I have a vibration with the tail. Could
be just the new motor(OS50)breaking in. I have watched some videos
of others on their maiden and have seen what may be the same thing.
Im new to nitro, you gotta love the smoke and noise!!

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02-05-2010 01:23 AM  8 years agoPost 2
Giantxtc11

rrNovice

Lakeland, Florida US

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Good deal. keep posted.

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02-05-2010 03:15 AM  8 years agoPost 3
oragami

rrVeteran

Florida

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Most likely it is just a tuning issue. When a motor runs rich it is going to cause vibrations.

Remember that you are dealing with a Belt Driven tail as well. Belts all though are said to be more effecient and cleaner running, don't exactly work that way. They tend to run a little rough. So don't be alarmed at a little tail vibration.

Now if the tail fin looks like it is a 1/2" thick in a hover, then you have a problem, but other wise, it is just due to things being new, and the belt drive cogging a bit.

Keep us posted, we are all excited to hear of your results.

Hope this helps

Craig

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02-05-2010 03:30 AM  8 years agoPost 4
jschenck

rrProfessor

La Vista, NE.

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tighten down the muffler bolts after your first flight while the engine is still hot.

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02-05-2010 04:24 AM  8 years agoPost 5
az_heliguy

rrKey Veteran

San Tan Valley, AZ

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welcome to the elyq family

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02-05-2010 04:40 AM  8 years agoPost 6
RodneyL

rrNovice

Rossville GA

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Thanks for all the advice and comments! I did tourqe down those muffler bolts while warm. I think I was just a little bashful with them the first time.haha Yea I'm not to concerned about my vibes with the tail just yet. I think its plenty rich for now. Unless you guys tell me different, I will give it a couple of cliks leaner each tankful. The temp of the head was about 100d. I did notice the vert fin shaking. Its raining here for the next 2 days, so I won't get to try again for a while. Thanks again for the nice comments.

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02-05-2010 12:41 PM  8 years agoPost 7
jschenck

rrProfessor

La Vista, NE.

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you might want to check the runout on your clutch, mine was off a bit on moth I've built and that will cause vibs hat will knock the muffler loose and cause other problems

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02-06-2010 02:21 AM  8 years agoPost 8
patrickcape

rrNovice

Cape coral, FL USA

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the stock dampners are really hard and caused vibration on mine, or make sure the belt is to corect tension.

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02-06-2010 04:35 PM  8 years agoPost 9
Alexm0324

rrApprentice

Atlanta, Georgia USA

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Hunting for Vibrations
Fan hub runout was bad on my V50C. I now have it down to .002 where I slipped some foil in on one side of the motor shaft as I tightened the fan hub.

Another thing you may already know is that CA is weakened by nitro and will let loose. Use epoxy on the carbon to aluminum joints of the carbon tail pushrod as well as the boom supports.

Also Make sure the tail boom supports are tightened down good and check them every few flights. Mine came loose and it wasn't pretty (started with CA on the joints). Another thing to watch very closely for on the tail is the tail pitch fork where it screws into the brass bushing. I have seen them back out of the threads on the V50C and Raptor 50 helis. It starts with a tail wag due to the increased slop, then eventually you lose the tail control when it backs out completely. A little thread locker on the threads of the brass bushing never hurts... just make sure to wipe off any excess so the slider doesn't bind on the tail shaft.

I'm still hoping for a fan hub with collets so I can dial the fan, hub and clutch to zero runout. While not 100% necessary, a collet version hub would cut setup time greatly.

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02-06-2010 04:55 PM  8 years agoPost 10
Double Decks

rrApprentice

Poole Dorset

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Sorry being a bit stupid what is CA?

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02-06-2010 05:03 PM  8 years agoPost 11
az_heliguy

rrKey Veteran

San Tan Valley, AZ

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super glue

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02-06-2010 06:07 PM  8 years agoPost 12
Double Decks

rrApprentice

Poole Dorset

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Thanks

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02-07-2010 08:22 PM  8 years agoPost 13
RodneyL

rrNovice

Rossville GA

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Thanks for all the ideas. The original fan hub that cam with my kit was defective. Chris at RCHeliworks exchanged it for me. The first one was really bad, can someone elaborate a little more on how to correct the hub if the runout is unacceptable.

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02-07-2010 08:27 PM  8 years agoPost 14
az_heliguy

rrKey Veteran

San Tan Valley, AZ

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alex has it down with slipping some alimunum foil on the motor shaft when installing the hub...

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02-08-2010 03:17 PM  8 years agoPost 15
Alexm0324

rrApprentice

Atlanta, Georgia USA

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Detailed Instruction
I have created an instructional illustration of what I did.

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02-08-2010 07:50 PM  8 years agoPost 16
400driver

rrApprentice

uk/ Spain

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Alex, that makes it very easy to understand.
Many thanks

More days at home would be nice!

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02-09-2010 02:04 PM  8 years agoPost 17
oragami

rrVeteran

Florida

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Thats an awesome Illustration, Thanks for the info.

Craig

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02-10-2010 12:48 AM  8 years agoPost 18
RodneyL

rrNovice

Rossville GA

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Alex, YOU are the Man! Thanks

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02-14-2010 04:47 PM  8 years agoPost 19
Si_B

rrApprentice

West Sussex

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Well my maiden didn't go too well. Just go it started when the crankshaft nut span on the shaft and locked everything up. More loctite on that one once I've stripped it all out again.

Was a crap end to a crap day that saw my tail gears shredded on my 450 pro, not even managing to get my 700 airborne after fitting the 3G FBL (tail is uncontrollable). Shame really, was quite a nice day, and had been waiting weeks to get her in the air.

Cheers,

Simon

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02-16-2010 09:22 AM  8 years agoPost 20
Toolman

rrApprentice

London

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Out of interest how are you guys dialing the clutch?

I have in the past dialed to the outside of the boss (of the clutch) with the one-way bearing. Not Ideal though, and on the Vision the Clutch bolt heads interfere with even this.
Thought of replacing the clutch bolts with button heads, to give more free surface to dial against.

Tim.

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