Are SAB carbon blades to much for standard motor/ESC

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Home › ✈️Aircraft › 🚁Helicopter › e-Thunder Tiger › Raptor E325 › Are SAB carbon blades to much for standard motor/ESC

06-19-2009 08:35 AM 11 years ago

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0Post 1

ki-gas

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All over Europe, mainly England

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Are SAB carbon blades to much for standard motor/ESC

A friend has just changed the standard MT wood blades (paint stirers) for SAB carbons, but unlike my Radix the SABs measure 320mm from bolt hole to tip as opposed to 315mm and the chord is a 1.25mm wider.

Also the weight of the SABs is 2.5 grams more than the Radix and the section of the SABs is fatter.

The first flight with the SAB's caused the battery to heat up far more than normal to the point where it puffed up a bit although it was not taken below 11.3v (3 cell pack), I'm asuming that the bigger, heavier, more draggy SAB blades are demanding more current to drive them and this is what is causing the over heating. The motor was also quite hot and the esc was a lot warmer than normal, he also experienced for the first time a one to two second lock-out during this flight, initially I thought it was the thermal cut out in the esc but on reflection it was more like a receiver lockout - this made not be related but thought I would give all the info.

Has anyone else notice when flying these SAB's (The Red and White design)on the MT with standard motor and esc that the motor, esc and battery get hotter than normal?

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07-11-2009 09:27 PM 11 years ago

0Post 2

henrik04

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Killcare NSW Australia

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Yes this fact has been documented time and times again.

Change motor / ESC for a decent set and forget about it.

Happy flying.E-325 Full metal head and carbon bits. E-620 Kasama head tail

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07-11-2009 09:56 PM 11 years ago

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ki-gas

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Thanks for that.

By the way the lock out was traced to the antenna lead inside the tx coming unplugged from the pcb.

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07-11-2009 10:23 PM 11 years ago

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fenderstrat

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Aston,Pa

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HHHHMMMMM.been flying the stock motor/esc in my MT and MTSE(this season) for over 2 years now no problems.

when you took off the old TT blades(which cause high amp draw and temp problems more than any blades incl CF)did you re-check 0 pitch a mid stick and max blade pitch?Compass helis Support Team
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07-12-2009 09:17 AM 11 years ago

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TOSH

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UK.Peterborough

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l`ve gone back to the stock woodies for a while just to use them up. l don`t (never did) get any heat issues but l do loose about a minute on the flight times against radix.Flybars. Who needs `em.

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07-12-2009 02:02 PM 11 years ago

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LJS

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Minnesota, USA

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Hi All,

When I started everyone told me I needed CF blades. But I couldn't understand why. At the headspeeds I was flying, the woodies performed very well. I was doing loops, rolls and other maneuvers with the woodies with no problems.

There's nothing wrong with flying woodies -- especially if it allows you to get more use out of your current power system.

Keep 'em flying.

LJSLogo 600 VBar, 10S
TRex 600E VBar, 8S
Logo 500 VBar, 6S
TRex 600ESP, 6S

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07-12-2009 02:04 PM 11 years ago

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ki-gas

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fenderstrat,

Yes I did, what blades do you fly and what pinion do you use?

Hello TOSH how are you?

Don't understand it, some people have heat issues with TT woodies and some don't. I see the new style TT esc has a heat sink - it is the old style motor and esc (with no heatsink)

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07-12-2009 05:14 PM 11 years ago

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TOSH

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UK.Peterborough

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Hi ki-gas
lts one of the first one that came out. l just run it flat out.
l don`t have much of a garden or a video camara so this is the best l can do for now, but you can see it flys ok with the woodies.

http://www.youtube.com/watch?v=DVewA8NaLNoFlybars. Who needs `em.

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07-12-2009 06:06 PM 11 years ago

0Post 9

ki-gas

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Excellent stuff TOSH. By the way, you have stacks of room there to fly a turbine

All the best.

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07-13-2009 01:26 PM 11 years ago