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Zoom › Foam Vs. Carbon Blades
11-04-2004 04:59 AM  13 years agoPost 1
Jim Cimino

rrKey Veteran

NE Pennsylvania

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I had been flying the Shogun with Like 90 Blades and I had the motor burn up. I replaced the motor and the speed controller and have been flying again. We did some light 3D with the wood blades but it was sluggish. I put the foam blades back on and it really moves, but I don't think I want to try too much 3D with the foam blades. I have a set of Carbon Blades and they are better than the wood but not as good as the foam blades for headspeed. I notice that with the foam blades I get very little bog when adding collective, but I can notice a reduction in headspeed and performance with the carbon and even more so with the wood blades. I also notice a corresponding loss of flight time with the heavier blades. With the foam blades I can fly about thirteen minutes and the other blades about nine minutes. The motor temp stays the same as well as the battery temps. (130/110) It seems it needs more torque. The weight is 540 grams with the wood blades. This is my setup:

Himax 2025-4200
Phoenix-25
3S2P 1660 mAH Battery
8T Pinion-Like 90

Cut off voltage 9.0
Soft Cutoff
Brake Disabled
Governor High
Soft Start
Timing Standard
Current Limiting Normal
PWM Frequency 13khz

Jim

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11-04-2004 05:34 AM  13 years agoPost 2
Dennis (RIP)

rrApprentice

Oregon

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Try a higher head speed Jim. If you are doing 3D, then 2700 to 300 is very good.

......Dennis

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11-04-2004 05:40 AM  13 years agoPost 3
helibird

rrKey Veteran

St. George, UT

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I noticed the same thing with my last shogun the only thing I could think of was that the reason it would bog would because you've got too much pitch on the blades. With the foam blades I bet they flatten out at high pitch settings so you don't bog as bad, but the other blades are stiffer so they hold the pitch.

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11-05-2004 04:51 AM  13 years agoPost 4
Jim Cimino

rrKey Veteran

NE Pennsylvania

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I've tried it all the way up to 100% on the throttle and you still notice the loss of headspeed. As far as pitch...if you start with high headspeed then you will not use as much collective as long as the headspeed stays high. The total collective does not matter as long as you are not trying to use it all. I am running high governor mode. The carbon fiber blades are not as bad as the wood, but still worse than the foam. I have some ideas to try, and a set of SAB's on the way and might even try the 9T Pinion again. Unfortunatly I took my first dive with it today and have some minor damage that needs to be fixed first. Hard to beleive...my first crash since last summer and I flew six cases of fuel this year. Damn! I wanted to make it through the year without a crash.
These things fly so good they make you do things you shouldn't in places you shouldn't.
Jim

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11-05-2004 05:02 AM  13 years agoPost 5
WEAVERS32

rrNovice

WALNUTPORT PA

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JIM
WHAT KIND OF FUEL ARE YOU RUNNING IN YOUR SHOGUN 30%OR JET A.:

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11-05-2004 05:31 AM  13 years agoPost 6
Jim Cimino

rrKey Veteran

NE Pennsylvania

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Scott,
JET A of coarse...is there any other? Hey, maybe I should let Albert fly it, then I could get my crash count up.
Jim

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11-05-2004 05:34 AM  13 years agoPost 7
Jim Cimino

rrKey Veteran

NE Pennsylvania

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Hey Scott!

You need to get one of these...they are great! By the way, I bought a Flying Thingz Extra for next season.
Jim

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11-05-2004 06:42 PM  13 years agoPost 8
CRAZYKEV

rrVeteran

Cincinnati,Oh - U.S.A.

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Let us know how the SAB compare to the Like90s. I am also waiting to hear someones thoughts on the MAH carbons for the Shogun.

Like90 is supposed to be releasing a flatter profile set of blades.

Kev

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12-01-2004 12:34 AM  13 years agoPost 9
rstacy

rrElite Veteran

Rochester, NY

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I broke my last set of CF blades last week. I was given a set of Like90 woodies to try on my Hornet this weekend.
I have to say that I didn't like them from the start.
The airfoil didn't look right.
It looks like an inverted semi-symmetrical airfoil. If I didn't know better I would think they were for a CCW rotating rotor head. Just to be sure I checked the Like90 site and it doesn't look like they make a CCW blade.
I mounted the blades and they hovered OK but the head speed was way down. Today I got a chance to get out and fly and performance was down as well as run time. The drag of the Like90 blades is just too much and the airfoil isn't right.
Tonight I modified a set of Shogun foamies to fit my Hornet.
The head speed was back as well as the crisp control.
Definitely looking forward to tomorrow to see how well they do in forward flight.

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12-01-2004 12:45 AM  13 years agoPost 10
Jim Cimino

rrKey Veteran

NE Pennsylvania

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I have tried the stock foam, Carbon Fiber (Heli-Hobby I think), Like 90, and the SAB Carbon Fiber. For all out performance, the SAB wins hands down. Very smooth, no notice of head speed reduction and I only loose a minute or two of flight time over the foam blades. If you are only hovering or just flying around, the foam baldes give the most flight time. The Black Carbon Blades required a lot of balancing and I notice serious head speed reductions when used with the Himax Motor...I have not tried them with the Hacker. The like 90's seem to zap too much power and flight time...poor airfoil I guess. I have not tried the MAH blades, because I can't imagine them being better than the SAB's that I have now.
Jim

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12-01-2004 12:57 AM  13 years agoPost 11
rstacy

rrElite Veteran

Rochester, NY

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The quality of the Like90 blades reminds me of the wooden rulers that some are using in another post.
The MAH stuff works very well.
I am ordering a set of SABs now to try out.

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12-01-2004 01:00 AM  13 years agoPost 12
Jim Cimino

rrKey Veteran

NE Pennsylvania

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Let us know how the SAB's compare to the MAH.
Jim

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12-01-2004 01:25 PM  13 years agoPost 13
CRAZYKEV

rrVeteran

Cincinnati,Oh - U.S.A.

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I am now runnun' the MS composite blades and they are great! Very stiff and light! I am also getting about 1 1/2 to 2 min. longer flights with these blades.

Kevin

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