View Full Version : Wood vs plastic blades
sc204
03-18-2008, 06:42 PM
Does anyone else find the bird to fly much more stabely with the wood blades?
I switched to the wood blades (with plastic root addition) and removed the flybar weights and found the heli to be pretty comfortable. Certainly more twitchy and less stable than a 450 sized bird but pretty good. (and fun)
I reinstalled the original plastic blades after a minor crash (also needed a new main shaft.) I found myself always behind the heli. I was flying outside so there was a little wind but it seemed much slower to respond to inputs and had less pullout power with the plastic blades as compared to the wood ones. It was almost as if the bird was not following my inputs. Switching back to a set of wooden blades brought it back under control.
Has anyone else observed this?
Stuart
t-driver
03-18-2008, 07:02 PM
the wooden blades are much stiffer and won't bend from the air hitting against the blades.
this resulting a (more) precise pitch. with carbon blades it would be even better.
"the stiffer the better"
scarr
03-18-2008, 07:24 PM
Yes, I notice the same issues with the plastic vs wood, really flies much better with the wood blades. If all you are doing is hover practice in a small area the plastic blades are just fine. Big difference when you start to move around at speed...
I do hope they come out with CF blades.....
Mr. Slumber
03-19-2008, 02:15 AM
I do hope they come out with CF blades.....
They are already there... :YeaBaby:
You can order them e.g. here:
http://flying-hobby.com/catalog/product_info.php?cPath=3_5_9&products_id=1526
trexflyer02
03-19-2008, 02:20 AM
They are already there... :YeaBaby:
You can order them e.g. here:
http://flying-hobby.com/catalog/product_info.php?cPath=3_5_9&products_id=1526
Those are for the EP100, not EP200. :(
Mr. Slumber
03-19-2008, 02:24 AM
I'm not 100% sure but do the EP100 blades not also fit on the EP200 because the EP200 is kind of a EP100 PRO version? :confused:
SurfCity
03-19-2008, 02:29 AM
I'm not 100% sure but do the EP100 blades not also fit on the EP200 because the EP200 is kind of a EP100 PRO version? :confused:
This would be my guess. You might ask them the lengths.
t-driver
03-19-2008, 08:16 AM
white carbon blades 203304 are 160mm long
http://www.infinity-hobby.com/main/product_info.php?products_id=1548&osCsid=676c2efafcab5481a31a0be98506c437
R.Lim
03-23-2008, 03:43 PM
Flying with wooden blade at high head speed will braek the blade, that is why the Cf and plastic blades.
The heavier the flybar weight the more stable the heli will fly, I have put more heavier weight in order to obtain better stability.
http://img442.imageshack.us/img442/9968/img00011bu7.jpg
but , don't forget to balance the blades.
http://img372.imageshack.us/img372/7331/img0001yl9.jpg
mjr_larkin
03-23-2008, 06:36 PM
Balancing your blade with decals. Nice idea. I'll be doing that when my balancer arrives (or scale. About flybar weights, I was wondering why people seem to be tacking off the flybar weights in an attempt to get smoother flight. That does not seem like an intuitive thing to do
R.Lim
03-24-2008, 05:29 AM
If you want to perform 3D, then you have to take the flybatweight off, in that case, the heli will reacts very quick
t-driver
03-24-2008, 02:23 PM
If you want to perform 3D, then you have to take the flybatweight off, in that case, the heli will reacts very quick
i have flown a bunch of helis,(always no expo) some with fast digital servos,
but the H200 even with the stock weights, and no expo,seems to be one with very fast response IMHO
Gr4yb3ard
03-27-2008, 07:47 PM
Back to plastic vs woodies, (sorry I was napping)
I've found the abs blades virtually indestrucable in my other ships, but by golly, don't get a boom strike!!!
Never had a problem with the woodies, but on my cppro, the abs blades devastated my boom. Must be the heavier blades reach down farther on hard landings, and they are definately tougher than the carbon boom.
Gr4yb3ard
" ....no, that's not real flying. REAL flying is when you have screaming passengers in back..."
Just to agree with the above, plastic's and carbon boom, if you do get a hit like us Gaui beginners the result is a total wreck if I had an alloy boom on I think I would have had a lot less damage, and if I had used woodies I doubt I would have much damage at all?
mjr_larkin
03-28-2008, 05:47 AM
I had a boom strike/crash with the stock boom and plastic blades and I tell you what, after replacing the boom, tail blades, main blades, blade grips, yoke, linkages and see saw, the thing is still a mess! One of these days i'll stop flying in my 10ft by 10ft room.
comment about wood blades: I get about 1min 30 sec less flying time when using wood blades. Plastic is just fine for hovering (and crashing) which is about all I do right now.
Gr4yb3ard
03-28-2008, 07:55 PM
Now that's interesting,
Possibly once spun-up, the heavier plastic blades conserve momentum and are more efficient? More accurate profile than the woodies?
These things are trending towards the low Reynolds numbers (it's an aerodynamic thing), and you get to the point that you expect weird stuff to happen down there, so it would not surpise me.
Or another thought, could be that the plastics are getting into laminar flow regimes, that would account for a big jump, like 15% in efficiency.
If Dick Johnson is still around when I get back, I'll ask him about this.
Gr4yb3ard
"...bees can only fly because, at their level, the atmosphere is like chicken soup..."