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Old 07-22-2012, 09:28 AM   #1
gitbse
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Default FB blades on FBL setup. Big deal?

^^
I'm running 710 fb blades on my new FBL setup, and having massive problems that I can't figure out. I was in the thought that the only difference is the blade CG. Is that true? Or wil FB blades on a FBL head cause all sorts of problems?
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Old 07-22-2012, 09:43 AM   #2
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I used to run align fb on my 450pro fbl,, never had any issues, maybe when scaled up things change idk

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Old 07-22-2012, 10:41 AM   #3
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Shouldn't cause problems. Fbl are a bit more then just cg, the weight on the chord is a different location.

I've put edge fbl on my 450 and 600. Compared to the align fb blades they felt alot more stable in all aspects of flight. The fb felt a bit more "wild". I was also able to up the gain a bit with the edge blades.

It's hard to describe so if you can ask a buddy to borrow a set of blades and give then a try. It's no different then trying different fb blades. They all fly different, but the true feeling they give can't be described properly with words.
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Old 07-23-2012, 09:35 AM   #4
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Generally speaking, no FB baldes won't cause major problems. Yes, the bigger the blade the more the effect. Yes, 450 guys run FB blades with no problems - I do and know others that do. That being said... did you do the simple stuff like check balance and blade set-up. New blades can move the geometery a tad. I actually spaced out once and put a blade on backwards - go it on the test bench though. Measure the new blades against one another. It's very rare but a mis-match may have slipped by.
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Old 07-23-2012, 09:40 AM   #5
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You might get better answers if you list and describe your problems.
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Old 07-23-2012, 07:57 PM   #6
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Default fbl or fb

i actually prefer fb blades on my fbl ships, that are faster around center . and dont feel as weighted
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Old 07-24-2012, 02:29 PM   #7
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Quote:
Originally Posted by audio131 View Post
i actually prefer fb blades on my fbl ships, that are faster around center . and dont feel as weighted
Agreed! I dont think I'd ever buy FBL blades.
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Old 08-08-2012, 03:01 AM   #8
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Has anyone tested the stiffness of the fbl blades? Both "wing load" and torsion?

Kind of a stupid Q now that I think about more, but I'm thinking stiffness would be beneficial to all blades, but still subscribe to the fly what works for you philosophy.

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Old 08-25-2012, 09:04 PM   #9
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Interesting info here, must read. It's all about the foil and COG
http://www.vstabi.info/en/node/74
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Old 12-20-2012, 12:27 AM   #10
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So you guys are flying FB blades on FBL with no issue? Reason I ask is a lot of the align FB blades for my t-rex 500 are significantly cheaper than their new "3G" blades. Currently I'm running EDGE blades but I just think they're worth the money. You guys haven't experienced any kind of issues? I might buy a set just to see if I can feel a major difference.
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Old 12-21-2012, 04:19 AM   #11
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I purchased an align 500 pro fb heli and converted it to dfc fbl.I purchased a new set of align 3g blades and honestly there the same thing except for the 3g emblem.Maybe they goofed idk but I pute the 3g and regular blade on the ballancer and they both ballance the same and there cg is also the same?Fbl blades are supposed to be a little hevier and the weight should be out a bit more for more stabilization and a more solid rotation geomitry so you dont over work your servos and you can dial in the gyros gain more precisely I believe.
PS.on my 450 I am running thunder power blades 330mm and they work great.
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Old 12-21-2012, 07:39 AM   #12
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Using Edge FB blades on my Trex 700 fbl with zero issues. Tried fbl blades and absolutely hated them. So there's a little info on a bigger machine.
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Old 01-12-2013, 12:52 PM   #13
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I wouldn't even try it on 700 size. I didn't see nay difference on my 450, either fb or fbl, but on my Protos 500 fbl, if I put fb blade, it shakes like hell. Even I balanced really good, but still makes very unpredictable on the air. It fly, but make very unpleasant and put lot stress on heli. That's why one of my servo burned.
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Old 01-13-2013, 05:18 AM   #14
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The SmackTalk Rotor Blades video discusses FBL vs FB blades.
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Old 01-13-2013, 02:50 PM   #15
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after reading the vstabi article and learning the differences between blades and balancing along with COG that helps determine how a blade is going to react . i`ve noticed that that brass sleeve that the bolt goes thru doesnt seem to be an issue ? that distance from where it is inserted to the tip of the blade.

I`m very new to the rc heli world .
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Old 02-21-2013, 07:11 PM   #16
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Just over a year ago I had a Custom Heli Parts DL 700e and I ran it with the Futaba 750 and actually preferred the Edge 693 FB blades over the FBL blades. It has a more connected feel and made the heli track better I thought.
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