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Ron’s HeliProz South . Century Helicopter . MTA Hobbies

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Thunder Tiger Raptors 30-90 - Imperio > RAPTOR 50 Head
 
 
Ben-T-Spindle
Elite Veteran
Location: Central Illinois

I agree – 3mm is not large enough for a 60 or 90.

... BTS
06-08-2008 12:54 PM
 
 
jsenicka
Key Veteran
Location: Hampton VA

sort of subjective. Synergy and Raptor 90 run a 12mm main and a 4mm bolt. Stratus, and others run a 10mm main shaft on a 90, and most of the time a 3mm bolt. I looked at the Stratus, Vibe and others and could not believe you could run a 10mm main, but I have yet to see an issue. I believe Kasama did quite a bit of testing with this head on the Synergy (where this head started) and the Raptor and did not see an issue with the 3mm bolt placed under shear load only. Since you have the 2 pinch bolts protecting against twist and flex, the jesus bolt is carrying only weight

Jim Senicka
3x R50V2/OS50/Kasama - 3x R90/OS91/Kasama
Futaba12FGH 2.4g
06-08-2008 01:14 PM
 
 
devens2448
Heliman
Location: Decatur, Il

Here is a shot of the head assembled. I did grind flat spots for the fly bar collars but not the flybar control arms. The control arms are easier to set at the right angle than I thought. There is a flat area on the back where the set screw goes that matches the see saw. That along with other visual alignment and it sets up pretty easy. I really feel like there needs to be a flat spot on the conrol arm also! It would be very hard to get the angle right though.



AMA #497873 Member of Decatur AeroCommanders
06-08-2008 03:36 PM
 
 
devens2448
Heliman
Location: Decatur, Il

Finally a post of the head installed on the chopper. The linkages turned out to be 93mm and 46mm just like the drawing showed. When I hook everything back up my collective and pitch is exactly as it was with the stock head. I haven't check to see was extreme I can yet but it looks like there is lots more collective left.



AMA #497873 Member of Decatur AeroCommanders
06-08-2008 03:43 PM
 
 
Timbers
Senior Heliman
Location: Wisconsin

Indexer

I have an indexing machine for my milling machine, where I can chuck the flybar up, grind a flat spot, then index the machine 180 degrees, and grind the other flat spot.

Problem is I don't have the right collet to hold the flybar. I'll have to buy one, because I'm sure I'll run the head for a long time!

...Tim

You fly RC helicopters? Can I have a ride?
06-08-2008 05:13 PM
HOMEPAGE  
 
 
Timbers
Senior Heliman
Location: Wisconsin

Problem with 3mm

Not only does that jesus bolt take the torque but it centers that head on the mainshaft. When theres play in there, god only knows where the head is gonna center. You have up and down play, so every time you take the head off your pitches are going to change.

Plus those pinch bolts, I believe thats just supplemental strength, wobble strength, those aren't meant to grip the shaft, and prevent any twisting of the mainshaft inside of the aluminum hub.

You fly RC helicopters? Can I have a ride?
06-08-2008 05:17 PM
HOMEPAGE  
 
 
Ben-T-Spindle
Elite Veteran
Location: Central Illinois

devens2448, have you flown it yet?

... BTS
06-11-2008 11:40 AM
 
 
devens2448
Heliman
Location: Decatur, Il

Yes I had a test flight yesterday evening. I had a piece of something fly off and hit my rotor blades. It was shinny and light as it fluttered to the ground. This happened about 15 seconds into the flight and I was just hovering out in front of me. Upon inpection of the heli and the ground I couldn't determine what flew off. I landed fine and the heli was flying fine. I have finally decided that it was one of the clear plastic pieces that Radix puts on the blades during shipping. That killed a bunch of time at the field. I then flew again just doing circuits. After a couple of circuits I hovered out front and did a flip. The governor turned off for a sec I think while I was inverted. So I landed and parked it until I can test the governor better. I had a pretty good smack down before the head upgrade to there may be a problem with the GV-1.

All in all the head was set-up pretty close. I didn't get a real chance to feel her out though.

How much collective are you using? Are you using the full -+14 deg?

AMA #497873 Member of Decatur AeroCommanders
06-11-2008 02:02 PM
 
 
Ben-T-Spindle
Elite Veteran
Location: Central Illinois

I am running +/-12 degrees. I have the long boom and Rotor Tech 610mm blades so that makes plenty of lift. Remember this actually on my E620 which will actually hold 2300 at 12 degrees pitch.

What holes in the mixing levers are you using?





... BTS
06-11-2008 02:30 PM
 
 
devens2448
Heliman
Location: Decatur, Il

Ben,

I was able to do some more test flights this weekend. Everything went OK. The head did feel like it had more cyclic than it did before. (I didn't readjust it after the upgrade.

I found the governor to be just fine. The heli felt as if it had more negative than positive collective during the testing. Bench testing revealed that to be true. My prefight setup was pretty minimal. I did check for pitch but I didn't have the flybar locked down to level so it wasn't super acurate. I just wanted it to be close. My experiment was more of what was going to be the difference with just bolting the head on with minimal adjustment. Like I posted before it was pretty close!

Now I have adjusted her to have -6 to +10 on normal, +-11.5 deg collecive at Idle up 1 & 2, and -+ 12 deg on hold. Pitch is set to 5.5 deg in normal, 6 deg at idle up 1, 7 at idle up 2, and 6 deg on hold.

I have the same hole locatins as Ben on the mixing lever.

Third test session will be tonight.

The only only this I don't like about the head is the fly bar lever. I am not a fan of trying to get that angle set. They need a flybar with flats or I need to build a jig to make my own. I don't like not having flat spot on the flybar for the levers and settng an angle is harder than setting something up level. I don't mind sacraficing convienence for performance although.

D

AMA #497873 Member of Decatur AeroCommanders
06-17-2008 06:31 PM
 
 
tappet head
New Heliman
Location: whitsundays Qld AU

Devens,hows this head going?, should have a few flights on it by now

if ya not crashen you aint tryin
09-11-2008 04:27 AM
 
 
phillips942
Heliman
Location: Norfolk, Virginia USA

Someone please notify me when Kasama comes out with a direct installation to the Raptor 50/Titan version. I would love a Kasama Head for my Titan but i just don't have any machining tools to modify parts to get the head to work.
09-14-2008 08:31 PM
 
 
Ben-T-Spindle
Elite Veteran
Location: Central Illinois

The trend is to flybarless and Kasama has just released a line of flybarless heads.

... BTS
09-15-2008 12:51 AM
 
 
tappet head
New Heliman
Location: whitsundays Qld AU

I was also thinking of heading that way aswell, less parts to break, but the helis dont look right with out the flybar, but the benefits far out way it, but then the cost of fly bar is alot nicer on the pocket than a flybarless setup. Its defenitlty the way helis are heading performance wise. Wouldnt be surprised if TT are working on one for there helis, they have a good range of gear so far.

if ya not crashen you aint tryin
09-15-2008 02:10 AM
 
 
Ben-T-Spindle
Elite Veteran
Location: Central Illinois

They say that flybarless gives better 3D and longer flight times. I was thinking of getting the SK360 system. It’s supposed to be just as good as the V-bar and much easier to set up.




... BTS
09-15-2008 11:37 AM
 
 
tappet head
New Heliman
Location: whitsundays Qld AU

same system that I was looking into aswell, plus its a smaller unit me thinks! I would run the TT metal head with innovation dampners as paying all that coin for a Beaut kasama and only using half of it doenst mesh to well with me.

if ya not crashen you aint tryin
09-16-2008 08:00 AM
 
 
Billebob
Senior Heliman
Location: Tim-buck-2

Quote 
The trend is to flybarless

Trend is to promote flybarless heads to sell you a new rotor head and a bunch of extra electronics.

BB

I ain't buyin till I see it flyin.....talk is cheep
09-16-2008 03:08 PM
 
 
3 pages [ <<    <     1      2     ( 3 )    >    >> ]2983 viewsPOST REPLY
Model Rectifier Corp . 3D Heli Depot . JR-Spektrum

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Thunder Tiger Raptors 30-90 - Imperio > RAPTOR 50 Head
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