rrTV-PHOTO   New HD TV
HOME   rrTV-PHOTO   GALLERIES   MY GALLERY   HELP-FAQ
myHOME PM pmRR MEMBERS 792 ONLINE 20 EVENTS SEARCH REGISTER  START HERE
 
1 page270 viewsPOST REPLY
GrandRC . CanoMod . Futaba-RC

.
.
e-E-Flite Blade CP mCX CX 400-3D > Sym blades - poor fit in grips
 
 
stealth916
Veteran
Location: Rocklin, CA

I tried my sym blades for the first time this past weekend - and I had to file down the root reinforcements by ~.015 inches to get them to fit smoothly in the grips for lead/lag action.

Has anyone else noticed this?

I also noticed that the root reinforcements from the flat bottom blades ARE DIFFERENT than the sym blades I got - they are thinner and so fit properly without modification.

Sadly - by the time I noticed I had already trimmed away covering & CA'd the original root reinforcements onto the SYM blades - so I just started filing. It looks possible that the root reinforcements from the flat bottom blades could be used on the SYM blades - which would save about 15-30 minutes of filing work.

Comments? Thanks!
09-06-2005 Over year old.
 
 
Jason Merkle
Senior Heliman
Location: Las Vegas, NV

What I sometimes find is that the screw used to install the top and bottom reinforcements has been tightened enough to "flare" the ends of the reinforcements making it difficult to install the symmetrical blades.

I have installed about 2 dozen sets of wooden symmetrical blades and never had to sand/file the reinforcements by taking these steps:

1) Loosen the screw that installs the reinforcements slightly.

2) Slide the blades into the grips.

3) Tighten the main blade bolts until they are tight (Very easy to do if you have the grips with a nut on the bottom. If you have grips with no nut and plastic only, be careful not to strip the plastic by tightening until they are snug as possible).

4) Tighten the screw that installs the reinforcements until it is just snug.

5) Slowly loosen the main blade bolts until the blades will now rotate in the grips with slight to moderate pressure applied (If you have them too tight they will not not track properly, and if they are too loose it could result in a boom strike during aggressive manuevers).


Yes, the reinforcements used for the symmetrical blades are different. They cover more area for better reinforcement which is neccessary due to the added loads of aerobatics. For this reason you should not use the flat bottom blade reinforcements on the symmetrical main blades.
09-06-2005 Over year old.
 
 
nat3cpu
Heliman
Location: North Liberty Iowa

Poor fit

Yes I have noticed this as well, the blade holders are made of plastic and I was able to overcome the tight fit issue by using the blade root to lightly lever the blade holder wide enough to insert the blade. It didnt take much effort and even when installed it did have a great deal of grip.

Life isn't fair.. Luckly it's a game and cereal!
09-06-2005 Over year old.
 
 
stealth916
Veteran
Location: Rocklin, CA

Nat3cpu - the blades must not be too tight - they MUST be able to swing nearly freely. They must be able to lead and lag smoothly in flight. These are only 9 gram blades - they aren't going to overcome a too tight grip to lead/lag properly.

LVRCFlyer - I appreciate the tip - but it didn't help in my case. You see - I thought the SAME THING - I noticed the flare of the reinforcements at the root - so I trimmed away the covering and CA'd the reinforcements to the blades - so there could be ZERO gap or flare between the blades and reinforcements - it did not help.

PS - I didn't pull .015 inches out of my ass :-) I used a caliper set to compare root reinforcements on FLAT vs SYM blades - bottom line - there is a difference in thickness - at least on the SYM set I got with my aero enhancement kit.
09-06-2005 Over year old.
 
 
lsnover
Senior Heliman
Location: Bath, PA

My symetrical blades where definately too tight, and the root would actually hit the back of the grip. I HAD to sand them down a bit to get them to fix.

I just put them on today. I've had the aerobatic kit for awhile, but was flying with the stock flat blades.

I can't believe how much smoother the heli is with the symetrical blades. It does seem to take more rpm to get into hover, and it's more sensitive to throttle inputs, but it flies much smoother IMHO.

These are the wood symetricals. I have a set of the CF blades to try next, but I'll wait till I wack the woodies first.

Regards,
Lee
09-12-2005 Over year old.
 
 
Flyboy50
Senior Heliman
Location: Amherst, MA - USA

My symmetrical blades were too thick too! I just jammed them in and it's been fine. When I switched to the Carbon ones E-Flite sells, they were the same way and actually hit the root of the grip. I had to grind them down a little. If you've got the money, go Carbon. It's like night and day compared to woodies.
09-12-2005 Over year old.
HOMEPAGE  
 
 
1 page270 viewsPOST REPLY
A Main Hobbies . Boca Bearings . Modefo's RC Helicopters

.
.
e-E-Flite Blade CP mCX CX 400-3D > Sym blades - poor fit in grips
 PRINT TOPIC Advertisers 

Subscribe to This Topic

Tuesday, December 2 - 10:58 pm - Copyright © 2000 - 2008 runryder.com | email | link to rr | runryder needs cookie