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HelicopterHIROBOHirobo SDX › FBL for SDX
12-01-2011 03:11 PM  5 years agoPost 1
Rob43

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Midland, MI USA

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I've seen a few threads here on setting up the SDX for FBL, and tips from Dr. Ben, but I am left unclear as to where this now stands. Is there, in fact, a Hirobo FBL conversion for the SDX? If so, is there a part number? Or is it a conversion you guys have come up with on your own? (I saw the $570 blue anodized unit which I cannot imagine anyone purchasing)

Rob

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12-01-2011 04:52 PM  5 years agoPost 2
blackbird

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thessaloniki-Greece

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I put the rjx 50 head in mine and it's fine.

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12-01-2011 05:05 PM  5 years agoPost 3
blackbird

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thessaloniki-Greece

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And is cheap also.

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12-01-2011 07:09 PM  5 years agoPost 4
Agilefalcon

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Fort Worth, Texas

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Unfortunately, the high price of the Hirobo SSL head for both the 50 and 90 machines has limited the mass appeal of them. At between $500US and $600US there are very few people who can ante up the cost of a helicopter just for the rotor head.

There are some alternative though.
1. Modify the SDX head. You need to remove all the flybar related items including the Bell-Hiller mixing levers and install a longer pivot ball to reduce the input to the blade holder approximately 50%. You then need a swash follower - I have purchased the Mikado unit for my SDX.
2. Purchase a 3rd party flybarless head: RJX or the Quick heads are around $130US each. I don't know where to get the RJX head but the Quick head is definitely available.
3. A german company has some conversion kits available but you need to be able to read German to be sure you are getting what you want. They also make a 3rd party head that costs around $300US equivalent.

It would be great if Hirobo would come out with a modification kit to simply convert from one head to another, or, dare I say it, offer something in a more reasonable price range: I'm sure there are other reasons for the high cost other than the exchange rate.

Chris Berardi
Team BobbyJack's Hobbies

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12-01-2011 07:13 PM  5 years agoPost 5
Agilefalcon

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Fort Worth, Texas

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Here's another flybarless head option: Got this from the flybarless forum:

http://www.nankinhobby.com/helicopt...ds/cat_164.html

Chris Berardi
Team BobbyJack's Hobbies

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12-01-2011 10:23 PM  5 years agoPost 6
TMoore

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Cookeville, TN

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The only parts that you need are these:

Mikado swash puller
2 Century 85mm rods 2.2mm OD-CNLR2285
4 Rocket City ball links for 2mm rods
2 Century balls-CNLR1017
2 3 x.5mm plain nuts
Blue or Red loctite

Move the balls in on the servos, setup the heli with your fave FBL unit and go fly. The deed will be done.

Don't get me wrong, I love the feel of the blue head and TD3 Swash but this head conversion is economical and fun to do. The most important part is; it gets you flying in a really short period of time and the heli flys great.

TM

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12-01-2011 11:32 PM  5 years agoPost 7
Agilefalcon

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Fort Worth, Texas

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Thanks TM - that was a great explanation with pictures!
I'll post mine shortly - just waiting to buy a flybarless controller. It was going to be the ACE (Thundertiger) GT5 but now it is delayed until end of December.

Yes, I love Hirobo blue too, but can't swing it this close to Christmas so I'm going the inexpensive route.

Chris Berardi
Team BobbyJack's Hobbies

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12-02-2011 01:43 AM  5 years agoPost 8
rudyy

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E. Amherst, NY

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Tmoore,

What is the FBL pitch arm you are using in the picture? I am trying to look for Hirobo SDX pivot bolt 2530-011, but I cannot find any.

Rudy

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12-02-2011 01:52 AM  5 years agoPost 9
TMoore

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Cookeville, TN

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Rudy,

That's the stock arm with a Century ball in it.

The Pivot ball that some folks have used is off of the swashplate but the problem that I had was poor geometry so I used the Century ball and if need be you can use a larger or smaller pivot ball on the inner ring of the swash to adjust the cyclic throws.

TM

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12-02-2011 01:05 PM  5 years agoPost 10
Rob43

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Midland, MI USA

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Thanks, guys.

Rob

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