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HelicopterHIROBOHirobo Freya › New 0414-949 FREYA Evolution OP SWM SSL-II
02-21-2017 06:47 PM  9 months agoPost 21
Felino

rrApprentice

Mexico city

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Someone plese let me know what is the idea behind those offset/downward main grips arms?
I had never seen such thing.

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02-22-2017 07:06 PM  9 months agoPost 22
Hirobodude

rrNovice

NY, Empire State.USA

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Gents,
thank you for taking time to reply to my question.

BTW:
THAT RC STORE IS WELL STOCKED FOR SURE...
Am I going to see in my lifetime store like this SUPER RC - I guess only in pictures 'cause trip to Japan is out of the picture.
( so for now I will stay glued to computer screen and enjoy your posted pictures, dream on...hirobo fanatic dream on )

...Talent does what it can,Genius does what it has to ...Mike Mas and Robert Gorham Forefathers and Great Hirobo Fanatics ! I salute You Guys...

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02-23-2017 05:06 PM  9 months agoPost 23
Felino

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Mexico city

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I think I got it.
The main grip arm has been made downward so it doesn´t hit the head button when the unavoidable happens.
It means that flying performance is the same.
I was taking a look at Perth RC web shop and that is how I knew it by chance.

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03-13-2017 05:16 AM  8 months agoPost 24
Bugcatcher

rrApprentice

Perth, Australia

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Hi Iyoy, sorry again for late reply. missed the thread notifications.

For blades, the Funtech F series such as F202/F205 are FBL blades whereas 'B' series are the original flybarred type. I would go the 720 mm size blades personally.

Felino, as for the downward angled blade grip arms. This is interesting as I have been looking into this myself. They are not for button clearance as you don't have to do that. It was me that designed and had upgraded arms made and available through PerthRC. Both for the SDX and D3/Eagle. I made them because I didn't like the yoke getting damaged every time from a crash or when a link may come off from a bad auto.

The only reason I can see for doing this is the angle of the link rod up to the blade grip then to the pivot point is now close to 90 deg. What is interesting is I have looked at the geometry closely and as a result you do get different pitch angles on the blades when putting a aileron and elevator input so it is very interesting. I am still looking into the theory behind it but it does fly very well.

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03-13-2017 08:34 AM  8 months agoPost 25
iyoy

rrVeteran

Bacolod City,​Philippines

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F720

These are what I got. Thanks!

iyoy

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03-13-2017 11:18 PM  8 months agoPost 26
JLF92677

rrNovice

Southern California

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I agree with you Bugcatcher, that the downward angle on the new SSL-II blade grip arms is probably due to the angle geometry of the link rod with respect to to the blade grip therefore making the blade angle movement linear above and below 0 degree center, so at 0 degree or center the grip / rod angle is 90 degrees.

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03-16-2017 05:04 PM  8 months agoPost 27
Bugcatcher

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Perth, Australia

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The problem is that while the collective may appear more linear there are actually other factors at play.

Both aileron and elevator inputs are NOT as linear as before for left / right and forward / back. You will get more pitch from one side of the head to the other which can be an advantage.

Put it simply, it's not quite as straight forward and i'm still trying to get my head around it believe me. I have drawn both scenario's up in CAD that I can interact with and invoke all the movements you would use during flight and measure all pitch angles. There's alot you can learn when you really break it down.

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03-17-2017 04:08 AM  8 months agoPost 28
JLF92677

rrNovice

Southern California

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Bugcatcher,

Would be very interested in your final assessment, as I am in the process of converting SSL head to SSL-II and planning to use SSL instead of SSL-II pitch arms.

BR
Joe

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03-20-2017 03:10 AM  8 months agoPost 29
Bugcatcher

rrApprentice

Perth, Australia

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No problem using the SSL-I pitch arm except that they hit head button where as the SSL-II clear the head button over the top. Hardest thing most likely is finding a link rod the right length.

That was why I designed and had machined my own upgraded pitch arms when the SSL-I head came out so they do go over the button and don't damage it if you have a link come off.

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