RunRyder RC
 2  Topic Subscribe
WATCH
 1 page 508 views POST REPLY
11-07-2004 02:16 AM  13 years agoPost 1
JBolt

rrNovice

Mountain View, CA

My Posts: All  Forum  Topic

I'm just finishing up my Raven and there are a few oddities to the tail.

1. The long pushrod and short z-bend rod are way too long when put together. Makes me wonder what part is wrong. How long is a Raven 50 boom?

2. With the tail pitch arm set a 70deg and the ball links in the right hand hole on the blade grip I'm getting 17deg of tail blade pitch going with the main rotor torgue? ??This also leaves only about 2mm of pitch slider travel between the tail rotor hub and the pitch slider & 9mm between the tail case and slider. This can't be right.

Jay

PM  EMAIL  Attn:RR  Quote
11-07-2004 04:10 AM  13 years agoPost 2
helitroll

rrVeteran

Southlake, TX

My Posts: All  Forum  Topic

Tail
JBolt: Thanks. I thought I was the only one. The Z-Rod is not right. We took a standard link out of a parts bin and bent another Z-Bend to get it to work. I was able to fly it today with my mod. I had trouble with the tail pitch slider being tight. This made Rt rudder slower than left. It occurred when the tail pushrod was pulled. I checked it from both ends and it was definitely the pitch slider and not the pushrod. It was fast and free. This corrected after the third flight and the tail was fine. I did change to some different tail blades and that helped. We lined up 3 50s at our field because I thought I also had the wrong boom. I do not know what it measures but the distance from main shaft to tail shaft on the Raven is slightly less than a Voyager and is about 18 mm longer than a Raptor 50. I had enough clearance to run 105s on the tail. I later changed to 95s but did have clearance with the 105s. It is a very quick bird. I have 5 flights on her with all 5 today. I will try more with her tomorrow, first date and all. Good luck.

PM  EMAIL  GALLERY  Attn:RR  Quote
11-07-2004 04:15 AM  13 years agoPost 3
JBolt

rrNovice

Mountain View, CA

My Posts: All  Forum  Topic

helitroll,

Good I'm not alone! I made a short z-link too. Did you set up the pitch arm at 70 deg and with the ball links on the inner hole? This setup seems totally wrong.

PM  EMAIL  Attn:RR  Quote
11-07-2004 04:52 PM  13 years agoPost 4
JBolt

rrNovice

Mountain View, CA

My Posts: All  Forum  Topic

Ok after staring at the tail pitch thing long enough I think I figured it out. I was suprised to find out that the pitch fork will strike the arm if the throw is set too much.

PM  EMAIL  Attn:RR  Quote
11-08-2004 07:41 AM  13 years agoPost 5
helitroll

rrVeteran

Southlake, TX

My Posts: All  Forum  Topic

tail
I made sure that I had equal throws in both directions on the servo arm. I then went out and flew it and adjusted the tail until I have no tail rotor pressure in normal mode. I made the adjustments mechanically. I am within one turn now. The hard part was doing the tail and adjusting the neeedle valve at the same time. One changed the other. I am now a little lean but the field had too many planks to fly it today. I ended up flying planks myself. Mine held fine. See ya. Mark.

PM  EMAIL  GALLERY  Attn:RR  Quote
11-08-2004 06:05 PM  13 years agoPost 6
JBolt

rrNovice

Mountain View, CA

My Posts: All  Forum  Topic

Hey Mark,

I didn't get to fly yesterday and I was still not happy with how the tail setup is done on the Raven so I made some changes. I tried Paytons mod to get more throw but it had way too much binding. Instead I used a picth fork from a Concept 60 and moved the balls to the outer hole on the grip. Now I get about 8-9 deg of right pitch at neutral with equal pitch slider throw in both directions. The C60 pitch fork is angled so it cannot strike the pitch arm but I can use all of the space on the output shaft. I also ditched the wire pushrod for a carbon pushrod off one of my other birds. With any luck the weather will be good enough next weekend to fly.

Jay

PM  EMAIL  Attn:RR  Quote
11-08-2004 09:58 PM  13 years agoPost 7
helitroll

rrVeteran

Southlake, TX

My Posts: All  Forum  Topic

Tail
I did the Payton mod on my Predator. It was amazing how much it helped. I used the standard Raptor tail pitch slider. You have to trim the brass portion to get full deflection. I am not sure if I will need it on my Raven. The z-links held my tail fine during backwards flight and flips. It was dead calm so it will need to be checked later. The tail was totally smooth after my 5th flight. I had no delay in fore/aft movement on the servo. I will know more as I get my pitch curves smoothed out. Mark

PM  EMAIL  GALLERY  Attn:RR  Quote
WATCH
 1 page 508 views POST REPLY
 Print TOPIC  Make Suggestion 

 2  Topic Subscribe

Monday, June 25 - 3:36 am - Copyright © 2000-2018 RunRyder   EMAILEnable Cookies

Login Here
 New Subscriptions 
 Buddies Online