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Boca Bearings . Modefo's RC Helicopters . XHELI.COM

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Gasser Model RC Helicopters > Gasser Blades
 
 
GREYEAGLE
Veteran
Location: Sioux City IA

Thinking of springing for another set - Ive running CMT's, MS's NHP's and SAB's

Didn't like the NHP's at all
Like the CMT's alot
Love the SAB's
Miss my MS's like to find a orphen.

I stick with 680's - 710's were OK but still like 680's

Here's the question, I like a smooth soft feel "not sharp " or "cracky" with plenty of spin on the bottom for learning auto-s.

I'm a long way's from getting into 3D stuff.

Whats a good feeling blade in the 680 range thats got a smooth gentel airfoil feel.??

GREYEAGLE
05-03-2008 04:02 AM
 
 
rbort
Elite Veteran
Location: Franklin, MA - U.S.A.

Go with the SAB's

I like them the best myself. Buy something WHITE. Black blades disappear and you lose an orientation queue.

-=>Raja.

1005 Xcell Gas, BHH G26 3D Plus, Jewel Generator
Spectra-g, BHH G26 3D Plus, Jewel Generator
05-03-2008 04:07 AM
HOMEPAGE  
 
 
turbogti
Senior Heliman
Location: St. Andrew, Jamaica

i know i'm still a newbie but when i was researching blades i settled with the Rotortech's as most users say they maintain alot of energy for Auto's and they also have a crisp feel for 3D.

They are black but the Yellow Flashing let you KNOW where the tips are

Grey, search around for the Rototech 710's i just recieved a new set to replace the one that was smashed.

****Predator Gasser SE - She's Ready to rumble ***
05-03-2008 04:21 AM
HOMEPAGE  
 
 
jschenck
Elite Veteran
Location: La Vista, NE.

The Rotortech's come in two weights. For what you described you might look at the heavier RT 710 FAI blades. I have not flown then and don't have enough experience with my gasser to make any judgement but I have shot a few high up glider auto's with my RT-710SG 3D blades. They did pretty good but I'll bet the heavier FAI blades would really auto well. The 3D blades really moved around even with the low headspeed and rich engine setting but still felt very stable in a hover.

...yep...
05-03-2008 04:35 AM
 
 
Eury
Elite Veteran
Location: Ankeny, IA, USA.

Another vote for the Rotortechs. I've got a set of 710s on my Pred Gasser, and they fly great. very smooth with good tracking, and autos are like a parachute, it's funny, at the end of an auto you can almost count the blades as I hold it in a hover and bleed off energy. Awesome blades. I've got the 3d ones, and I'm very happy. I'm sure the FAI ones would be even better in autos. I've flown SABs, TTs, NHPs, and Mavrikks, and I like the RT the best in these big blades. Haven't tried the Radix in the bigger sizes, but in the 600mm range, those are my favorite.


Nick Crego
I'm not going to put my lot in with economists.
05-03-2008 03:14 PM
 
 
xcellgasman101
Key Veteran
Location: WOODWARD, OKLA....

Jack,, just be sure that what ever you get, has a 14/4mm (14mm blade grip, and 4mm bolt) I'm not for sure, but I think the Rotortechs are 16mm thick, I did order a set from Ron Lund a couple of years ago, and they wouldn't fit, Had to send them back,, Nice looking blade, and I really wanted to try them, but I couldn't... I have a set of Mavrikk's and they auto great, but might be a little sensitive!! SAB are great blade too,, I'm not for sure, but can you still get CMT???
I'm flying a set of 800mm NHP's on my camera ship now, and I love them,, How come you don't like the NHP??? Well good luck,, XGM/VGM

John Crotts
www.soonerhelicamproductions.com
05-03-2008 03:26 PM
HOMEPAGE  
 
 
GREYEAGLE
Veteran
Location: Sioux City IA

I guess It was a bad day at the field with a set of NHP's

Truthfully I never had them long enough, or knew enough about set ups to get a feel for them !!!


I work with several forms woven carbon, and the nhp's had a linier straight line pattern to the matrix which gave me a errie feeling about torsional stability.

Imhop - I feel a carbon weave may have more strenght in all deminsions. I don't know any thing about blade design - it was just a look thing.

When I had them on I blew - "TNT'd a TNT head. I have never came to a conclusion why, I know my assembley work, and it wasn't a mechanical issue that set off the event, it may have been head speed or a instability issue. When I examined it had a full foam core and the fiber seemed a bit thin.

Thanxs alot about the 14 /4 dimmension's -

When you think about weights - As I under stand, it's aprox 1/3 of the blade " out board " that actually carries the load, of my flying pig.

I'll take a look at the NHP's again, and also study up on the FAI - styles as I have a mentor who can help .

HEY FRANNY ! HELP !

That's just amazing !

GREYEAGLE
05-03-2008 05:35 PM
 
 
xcellgasman101
Key Veteran
Location: WOODWARD, OKLA....

The new style of NHP's have the carbon weave in them,, They look alot better than the old style,, I know because toejab set me his Bergen EB to put back together and set it all up for him, and he got a set of NHP's, and sent them with the bird,, I told him, I was going to switch them for mine They really look nice,, cant wait to get the Bergen in the air as for a compairson to the Xcell... But so far, I'm pretty impressed by the Bergen,, XGM/VGM

John Crotts
www.soonerhelicamproductions.com
05-03-2008 06:23 PM
HOMEPAGE  
 
 
helicenter
Senior Heliman
Location: Winter Haven Fl.

blades

The Scott Gray Rotortech 710s are great for me.

Doug
05-03-2008 07:54 PM
 
 
Shiro Muji
Senior Heliman
Location: Japan

I used V-Blades TST 710mm and Radix 710. both are good blades.

Maxum with Hanson 3D Max, Maxum Nitro, Maxum 30.5cc modified engine, RH Generator, Sceadu .50Hyper
05-04-2008 02:38 AM
 
 
gorn
Elite Veteran
Location: Western Australia

Radix 710 here, wicked blade

If you bling it, they will come :D
05-04-2008 03:00 AM
 
 
AceBird
Elite Veteran
Location: Utica, NY USA

Grey, as you know I don't fly 3D and never will but I saw a huge difference when I got a hold of a pair of RotoTech 710 carbons for my Predator. The ones I have are 14mm all black. Now that you are swinging faster you might like 710 over 680. Flatening the curve at hover will give you a much softer feel similar to expo. But when you want the kick its there.

Ace
What could be more fun?
05-04-2008 11:57 PM
HOMEPAGE  
 
 
oldfart
Elite Veteran
Location: Vancouver, Canada

Greyeagle

Rotor Tech make MANY different types of blades in lengths from 690mm to 720mm...some are designed more in favor of "snappy" responses for 3D, while others are designed more for the FAI style flying.

The RT blades model # that end in "01" are the FAI style blade. Those ending in "66" are designed more for 3D.

Depending on how long a blade your gasser can accomodate, I would suggest these FAI type:

CN267001 - 700mm FAI
CN267201 - 720mm FAI

For 3D, these are better:

CN266966 - 690mm 3D
CN267166 - 710mm 3D
05-07-2008 01:39 AM
 
 
GREYEAGLE
Veteran
Location: Sioux City IA

Sincere Thank You !

Thank you very much !

I'm definitley going the heavier blade route like to see 680's to 710's with some weight in them.

My Current favorites are my SAB's 680's -

They just feel like they take a bit to spool up so I'm belivien their a little heavier that my older CMT's.



Lately I've seen two sets of RT's in macro photo's, that have leading edge delamination, which is a definite QA problem if they go out of the lab that way. Seem's to be at the mold seperation line, most likley air intrainment when thy pull the vacume.

I lay a bit of carbon, glass, and spectra, for my occupation and when I look at the surface quality of a SAB I'm truley amazed, cause I couldn't do it even with the correct mold finish.

It's going to boil down to price and weight's avalable - Like to get up around a 200 gram 14/4 wide cord with a docile leading edge and a sqaured TE.

GREYEAGLE
05-07-2008 02:34 AM
 
 
bellecrank
Veteran
Location: Canada

Greybird

I have seen those TWO posts also "Lately I've seen two sets of RT's in macro photo's, that have leading edge delamination, which is a definite QA problem, which is a definite QA problem if they go out of the lab that way. Seem's to be at the mold seperation line, most likley air intrainment when thy pull the vacume. Seem's to be at the mold seperation line, most likley air intrainment when thy pull the vacume"

IMHO, the question is as you say "if they go out of the lab that way."

All I can say, is that there has been many of the local flyers who have been flying them for many years, and never any problems.

Consequently, I always take such posts with a grain of salt. I am sure if there were quality control issues, fellows like Scott Gray would not have been flying them for so many years, nor would 8 of the top 11 FAI/F3C flyers at the US nats for so many years either. or many of the others I know who really push their helis hard.

It would be interesting to talk to someone like Ron Lund or a similar retailer and ask them if they have ever had a customer have any issues with any that they have ever sold. I would bet they had not.
05-07-2008 03:27 AM
 
 
GREYEAGLE
Veteran
Location: Sioux City IA

Does RT make blades under different names for others ??

Truley a nice looking set of blades, and tremendouse popularity I must admit. I believe they Mfg under another name also but not sure of it.

If the top daddy rabbits are flying them it's a chinch their difinitley something to their performance hands down period.

I was truley impressed with the looks and the price seemed to be pretty fair as it fall's right in their with the rest.

I believe those two set's with the leading edges showing inclusions appeared the same week and Century recalled them ASAP. Two set's appearing in one week is pretty uncanny, I wonder why ?.

I will never be a 3-D flyer, just what a long hang time when learning auto's and a soft feel.

GREYEAGLE
05-07-2008 03:58 AM
 
 
AceBird
Elite Veteran
Location: Utica, NY USA

Quote 
Two set's appearing in one week is pretty uncanny, I wonder why ?.

When things go wrong it usually occurs more than once and typically happens multiple times. That’s why quality control systems bank so much on trending analysis. There is a lot that can go wrong in the production of carbon fiber products so having multiple instances of rejects is very plausible.

Ace
What could be more fun?
05-07-2008 09:14 PM
HOMEPAGE  
 
 
oldfart
Elite Veteran
Location: Vancouver, Canada

Well, I just checked our computer and over the period analysed, we have had one set of RT's returned out of 706 pair sold. That is a very good QC ratio IMHO.
05-07-2008 11:05 PM
 
 
AceBird
Elite Veteran
Location: Utica, NY USA

Quote 
That is a very good QC ratio IMHO.

Really?? For our electrode line 1 per million is not even acceptable and electrodes are not even life threatening. One could argue that helicopter blades are life threatening because if they explode on spool up there are usually people around. I suppose your opinion on a good or bad QC ratio is based on what you are used to.

Ace
What could be more fun?
05-08-2008 09:38 PM
HOMEPAGE  
 
 
GREYEAGLE
Veteran
Location: Sioux City IA

Now I gone dun it !

Well, since I can't keep a secret I blame good buddy
" one sock CRAZY HOrSE" for pushing me over the edge.

I gone an dun it ! Their gona be yeller RT 690's 14/4s with colorfull bit's of bug poo!

Got to yapbbering also with Crazey Orse and like the loose lipped Irish I am and I let him know about my secret new lid. And he named it:

Now the big problem is we are trying to determine on how to spell it.

Monstersquitio

Monsterskito

Monsterskee to

Can any body help / ???

GREYEAGLE
05-09-2008 01:39 AM
 
 
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