RunRyder RC
WATCH
 1 page 823 views POST REPLY
07-22-2002 12:41 AM  16 years agoPost 1
Jayman

rrApprentice

Minneapolis, MN

My Posts: All  Forum  Topic

Gentleman.

I have had a problem with pitching on my Fury since I bought it. It only pitches when the heli is being rolled while going backwards. As soon as it gets inverted the tail goes up and continues to go up with each roll until the heli has completely lost backwards momentum. I can adjust for this pitchyness but I would rather not. I have flown other furys that don't have this problem so what is wrong with mine? I checked the CG initially and found it nose heavy so I have done some things to correct that. It now balances with a just under a half a tank. Here is my setup:

700mm gamma blades
V paddles with no weights
1:1 mixing ratio on the bell mixers
YS80 with KSJ muffler
9202's on ail, elev, pitch
GY502 on tail w/9253


Jayman

PM  EMAIL  HOMEPAGE  GALLERY  Attn:RR  Quote
07-22-2002 02:05 AM  16 years agoPost 2
gforce

rrVeteran

Fort Mill, SC

My Posts: All  Forum  Topic

Jayman, not sure if this is the cause of your problem.

But on my Fury I noticed the stock ball links had a slight side to side play in them. And a couple even had a slight loose play to them. I replaced them all with RC-city links that I got from Rick's and the head, swash, bell mixers, etc. all have a tighter feel to them now (less slop).

Today was the first time I flew it with the new links on, and it did fly better I must say. I did not do any backwards rolls like you are talking about, but it did foreward rolls superbly. Everything seemed straighter and tighter. Just a thought.

PM  EMAIL  GALLERY  Attn:RR  Quote
07-22-2002 02:56 AM  16 years agoPost 3
GM1

rrElite Veteran

Tallahassee, Florida US

My Posts: All  Forum  Topic

Difficult to diagnose
It's really difficult to diagnose stuff like this over the internet but I'll give you a couple of suggestions. If the model is climbing while traveling back wards inverted, the model has back cyclic trim in it. Usually this is the result of a nose heavy model that requires back trim in forward flight to hold the nose up. That is my best guess as to what is happeneing but there are a couple of other things that CAN affect this. I do not fly V paddles but paddles can make a difference. The size and position of the horizontal fin does also effect trim in flight. I took the fin off my sport Fury to help with this.
Hope this helps.

On a dog sled team, if you're not the lead dog, the view never changes.

PM  EMAIL  GALLERY  Attn:RR  Quote
07-22-2002 04:43 PM  16 years agoPost 4
Chopper

rrKey Veteran

Stow,Oh- oops, I mean St Louis, nope Stow again,

My Posts: All  Forum  Topic

There are a whole lot of variable why it does this. Mine does it on the 700 Gammas as well. It does it a whole lot less with SAB 710s. If you have a 9Z, you can put some swash mix in at a -4 or so. You can also put a p-mix to add forward when you pull the stick to negative pitch. This is where it happens.

When/if you change blades, you will have to adjust your mixes because it will change. Each blade has its own weird little tendencies. This is one of the weird little things that the Gammas do.

Paul

PM  EMAIL  GALLERY  Attn:RR  Quote
WATCH
 1 page 823 views POST REPLY
 Print TOPIC  Make Suggestion 

 0  Topic Subscribe

Wednesday, September 19 - 7:51 am - Copyright © 2000-2018 RunRyder   EMAILEnable Cookies

The RC discussion world needs to consolidate. RR is now one choice for that. Its software is cutting edge. It hosts on-topic advertising. Help RR increase traffic buy making suggestions, posting in RR's new areas (sites) and by spreading the word.

The RunRyder Difference

• Category system to allow Rep/Vendor postings.
• Classifieds with sold (hidden) category.
• Classifieds with separate view new.
• Answer PMs offsite via email reply.
• Member gallery photos with advanced scripting.
• Gallery photo viewer integrated into postings.
• Highly refined search with advanced back end.
• Hosts its own high end fast response servers.
• Hosts thousands of HD event coverage videos.
• Rewrote entire code base with latest technology.
• No off-topic (annoying) click bait advertising.
Login Here
 New Subscriptions 
 Buddies Online