RR Rated M For Mature
HOME   rrTV-PHOTO   GALLERIES   MY GALLERY   HELP-FAQ
myHOME PM pmRR MEMBERS 393 ONLINE 80 EVENTS SEARCH REGISTER  START HERE
 
3 pages [ <<    <     1     ( 2 )     3     NEXT    >> ]2142 viewsPOST REPLY
JR-Spektrum . E-flite . Fast Lad Performance

.
.
Synergy R/C Synergy N9 > Well, it happened to me too... :-(
 
 
helis
Heliman
Location: Pomona, CA

My Posts This: Topic  Forum

Quote 
Looks like it may have been over torqued. Might want to get one of those hand torque drivers.

Why only be over torqued on Synergy? Don't see over torque with other heli. It is a bad design to me.

Regards,
Ton
11-05-2007 Over year old.
PROFILE   PM   EMAIL   POSTS   BUDDY   IGNORE  
 
 
Paul Susbauer
Senior Heliman
Location: Spokane Valley, WA

My Posts This: Topic  Forum		So what is the difference in design on the Kasama parts? (well aside from the obvious of metal tail blade grips.

I've been reading of others having the tails blow up and after reading this today, I'm going to get the Kasama parts when $$$ allows.

--Paul

Ineptitude - If you can't learn to do something well, learn to enjoy doing it poorly.
11-05-2007 Over year old.
PROFILE   PM   EMAIL   POSTS   BUDDY   IGNORE   GALLERY
 
 
helis
Heliman
Location: Pomona, CA

My Posts This: Topic  Forum		Paul,

I am sorry I have no knowledge about the design but someone mention it to me before and I forgot it. My Kasama still holding up very well. As you can see many pilots are running 95 now with the stock grips, Is that telling you somthing?

Regards,
Ton
11-05-2007 Over year old.
PROFILE   PM   EMAIL   POSTS   BUDDY   IGNORE  
 
 
creightoncarr
Key Veteran
Location: Missouri City, Texas - USA

My Posts This: Topic  Forum
Quote 
So what is the difference in design on the Kasama parts? (well aside from the obvious of metal tail blade grips.

I'm pretty sure that the Kasama tail uses a stainless steel lug to attach the grips to the hub. I don't know about the bearings, but I assume it uses two radials and maybe a thrust bearing - there is no lateral play whatsoever in the grips on the Kasama tail I've seen.
11-05-2007 Over year old.
PROFILE   PM   EMAIL   POSTS   BUDDY   IGNORE   GALLERY
 
 
Paul Susbauer
Senior Heliman
Location: Spokane Valley, WA

My Posts This: Topic  Forum		Because of these reports, I'm running 95's on mine too...though I only have one flight on mine so far.

Ineptitude - If you can't learn to do something well, learn to enjoy doing it poorly.
11-05-2007 Over year old.
PROFILE   PM   EMAIL   POSTS   BUDDY   IGNORE   GALLERY
 
 
cdrking
Elite Veteran
Location: Seattle

My Posts This: Topic  Forum
Quote 
Poor parts quality is the reason Todd was talking to Craig from Century.

Please tell us more.

Jeff

To hover is divine, the alternative is rather PLANE.
11-06-2007 Over year old.
PROFILE   PM   EMAIL   POSTS   BUDDY   IGNORE   GALLERY
 
 
rotoryrob
Veteran
Location: Auburn WA

My Posts This: Topic  Forum		need some of that good ol US steel... I'll bet you could adapt a MA tail set up on it....LOL

Rotoryrob
11-06-2007 Over year old.
PROFILE   PM   EMAIL   POSTS   BUDDY   IGNORE   GALLERY
 
 
cdrking
Elite Veteran
Location: Seattle

My Posts This: Topic  Forum
Quote 
I'll bet you could adapt a MA tail set up on it....LOL
You mean the steel they use on the NEW Upgraded tail. The one before they had hubs fail.

Jeff

To hover is divine, the alternative is rather PLANE.
11-06-2007 Over year old.
PROFILE   PM   EMAIL   POSTS   BUDDY   IGNORE   GALLERY
 
 
rotoryrob
Veteran
Location: Auburn WA

My Posts This: Topic  Forum		exactly what I meant... they are bullet proof now... You are right I have seen them old ones fly apart.. once when Todd was flying it..

Rotoryrob
11-06-2007 Over year old.
PROFILE   PM   EMAIL   POSTS   BUDDY   IGNORE   GALLERY
 
 
P Johnston
Senior Heliman
Location: Ann Arbor MI GO BLUE!!!!

My Posts This: Topic  Forum		Why are people using stainless bolts in such a high load application? I have NEVER had good results coming from stainless hardware. It's always the first bolt to bend, break, or strip out.
Someone please explain this to me. Is it really stronger because I don't see it.
11-06-2007 Over year old.
PROFILE   PM   EMAIL   POSTS   BUDDY   IGNORE   GALLERY
 
 
cgbole
Key Veteran
Location: Tulsa Ok. U.S.A.

My Posts This: Topic  Forum		may not be stronger.... not sure but the 12.9 metric ones i got from the bolt supplier we get our bolts from at work didn't last more than 5 flights... and they were not overtightened.
chuck
11-06-2007 Over year old.
PROFILE   PM   EMAIL   POSTS   BUDDY   IGNORE   GALLERY
 
 
cdrking
Elite Veteran
Location: Seattle

My Posts This: Topic  Forum		Pro2k_3d,

I'm just stirring the pot. I just find it funny when people are so into the whole RC heli drama thing. I really could care less.


Jeff

To hover is divine, the alternative is rather PLANE.
11-06-2007 Over year old.
PROFILE   PM   EMAIL   POSTS   BUDDY   IGNORE   GALLERY
 
 
P Johnston
Senior Heliman
Location: Ann Arbor MI GO BLUE!!!!

My Posts This: Topic  Forum		Well I Googled tensile strength on the two, and s.s. actually has double the tensile strength.
steel-about 40,000psi
S.S.-about 85,000psi

although heat treat has a large factor on these numbers as well as what grade of material they are. But still in general, I guess numbers don't lie.
11-06-2007 Over year old.
PROFILE   PM   EMAIL   POSTS   BUDDY   IGNORE   GALLERY
 
 
cdrking
Elite Veteran
Location: Seattle

My Posts This: Topic  Forum		cgbole wrote:
Quote 
i tapped the hole deeper on the new one,
and relived the threads a few mm deep.then used a M3 x25 S.S. sholder bolt cut to lenth. and red loctited the sucker in there.

How will this alleviate the problem?

Jeff

To hover is divine, the alternative is rather PLANE.
11-06-2007 Over year old.
PROFILE   PM   EMAIL   POSTS   BUDDY   IGNORE   GALLERY
 
 
cgbole
Key Veteran
Location: Tulsa Ok. U.S.A.

My Posts This: Topic  Forum		well i don't know if it helped or not yet only put 5 flights on it since. but you use a shoulder bolt for a "jesus" bolt right? the 3 bolts i seen break were broken appx 1 1/2 threads down from the head.
i think the shoulder can take the side loads better than the threads.
and by reliving ( if thats the right term for it) the threads in the end of the hub. it gets the shoulder down inside the "axle" and is surrounded by the bearing. so it will either survive the side loads or snap off, either way it won't be worse than what happened before...
just my opinion tho.........
chuck
11-06-2007 Over year old.
PROFILE   PM   EMAIL   POSTS   BUDDY   IGNORE   GALLERY
 
 
cdrking
Elite Veteran
Location: Seattle

My Posts This: Topic  Forum		Here's what I've done:

95 mm tail blades

New, hopefully better quality bolts

Red loctite on the threads (a small amount)

I didn't tighten them very tight at all. We'll see if it holds. I've been hammering the tail quite hard lately and it's holding fine. Never had a problem on my first machine until I hit the ground at terminal velocity.

Jeff

To hover is divine, the alternative is rather PLANE.
11-06-2007 Over year old.
PROFILE   PM   EMAIL   POSTS   BUDDY   IGNORE   GALLERY
 
 
cgbole
Key Veteran
Location: Tulsa Ok. U.S.A.

My Posts This: Topic  Forum		the only thing i was doing diffent was the high head speed...
it's a e powered beast and the head speed was appx 2200.
chuck
11-06-2007 Over year old.
PROFILE   PM   EMAIL   POSTS   BUDDY   IGNORE   GALLERY
 
 
cdrking
Elite Veteran
Location: Seattle

My Posts This: Topic  Forum		Another thing to add is I don't like the way SOME of the grips have end play in the grip. I don't mind the flapping that occurs in all the N9's that I've seen but I don't like the end play.

On my first Synergy I modified the tail hub slightly to eliminate this end play.

Jeff

To hover is divine, the alternative is rather PLANE.
11-06-2007 Over year old.
PROFILE   PM   EMAIL   POSTS   BUDDY   IGNORE   GALLERY
 
 
creightoncarr
Key Veteran
Location: Missouri City, Texas - USA

My Posts This: Topic  Forum
Quote 
What size tail blades were you using.

I was using 102mm blades. Never thought twice about using them either. I've always used 105mm tail blades on my R90's and never had any problems.

I wish I'd got a couple more flights on it before the tail decided to let go.
11-06-2007 Over year old.
PROFILE   PM   EMAIL   POSTS   BUDDY   IGNORE   GALLERY
 
 
cdrking
Elite Veteran
Location: Seattle

My Posts This: Topic  Forum
Quote 
I've always used 105mm tail blades on my R90's and never had any problems.

The difference is the size of the tail rotor disk on the Synergy. It's very large compared to other helicopters, this is due to the hub being longer/larger. This may be putting a lot of stress on the the tail rotor bolts.

Jeff

To hover is divine, the alternative is rather PLANE.
11-06-2007 Over year old.
PROFILE   PM   EMAIL   POSTS   BUDDY   IGNORE   GALLERY
 
 
3 pages [ <<    <     1     ( 2 )     3     NEXT    >> ]2142 viewsPOST REPLY
Ace Hobby . Thunder Power RC . Mikado Modellhubschrauber

.
.
Synergy R/C Synergy N9 > Well, it happened to me too... :-(
 Print TOPIC Advertisers 

Subscribe to This Topic

Saturday, March 20 - 11:12 am - Copyright © 2000 - 2010 runryder.com | email | link to rr | START HERE | NF