Question about Kasama Head

[randerson07]

I just got a heli with a Kasama head on it. Well I was an idiot and tryed to fly in the wind today and wrecked. Bent the main shaft no biggie Ive got spares.

Well Im rebuilding her now, and it seems the main shafts are too long to use with the Kasama head.

Are you supposed to cut them? or buy shorter ones?

As it is right now the flybars movement is very limited cause the main shaft is hitting it.

[Aox]

No no no, there should be NO problems with the Kasama head and stock main shaft.

Do you have the shaft upside down, by any chance?

-Aox

[randerson07]

definitely not upside down. I tried a couple different shafts that i have and they all do the same thing, they stick too far through the headblock and hit the flybar holder thing.

I talked to the previous owner and he had to cut to just above the hole in the top of the shaft to get it to work, so thats my plan.

[ghtracey]

Hmmm have you tried it with the shaft upside down? Isn't the hole on the other end closer to the end of the shaft? Maybe Kasama built thier prototype with the shaft upside down? :P

[randerson07]

the one end has the notch in it for the collar to screw into with a hole about 1" up for the screw to go through the oneway and auto gear, the other end has the hole closer to the end of the shaft for the headblock to screw onto, If I tryed it upside down, I would be in even worse shape, trust me, I tried lol.

Chopping the shafts isnt a big deal, couple minutes with the dremel and it should be fine.

[Aox]

That's really bizaare, man. First I've heard of anyone having to do this with a Mini Titan Kasama head.

Could you possibly take some pics?

-Aox

[randerson07]

Yeah Ill try to take some tonight when I get home from work.

[randerson07]

ok here are the pics

Here is a stock Main shaft with the kasama head
http://img.photobucket.com/albums/v16/mbxb4/uncut2.jpg
Here is a cut shaft with the kasama head
http://img.photobucket.com/albums/v16/mbxb4/cut2.jpg
again uncut
http://img.photobucket.com/albums/v16/mbxb4/uncut1.jpg
Cut
http://img.photobucket.com/albums/v16/mbxb4/cut1.jpg
flybar movement with stock shaft
http://img.photobucket.com/albums/v16/mbxb4/angleuncut2.jpg
cut shaft
http://img.photobucket.com/albums/v16/mbxb4/anglecut2.jpg
again stock shaft
http://img.photobucket.com/albums/v16/mbxb4/angleuncut1.jpg
cut shaft
http://img.photobucket.com/albums/v16/mbxb4/anglecut1.jpg

[chuckk]

you might have the wrong shafts. stock thunder tiger shafts work perfect. i used to own a kasama head. HeliDirect.com sells another brand of shafts that only fit their xmseller cnc head. my buddy bought a set of these shafts and they dont work with the stock stuff.

[randerson07]

The shafts im using our straight out of a TT package for the Mini Titan, Ordered right off Amain Hobbies. If I still had the packaging i would take a picture for you.

[LITHIUMSTATIC]

I've heard of this problem from a few other people a while back... they did as you and just cut the shaft down. Go fly!!!

[randerson07]

LOL go fly, thats a good one. I cant get this thing or my Blade 400 flying right. I need to swap the motor out of the Mini Titan, I think its dying, even with the throttle up near 85 and 90% the thing is bouncing around, even with very very little wind. and Its got nasty shakes on spool up and down, I balanced the blades, and have the tracking pretty darn good. It didnt have the shakes with the plastic head on it, but it had nasty tracking issues.

The 400, had a bent tail shaft i replaced that and put a Gy401 on it with a DS285 on the rudder(I cant get the darn 9650 to fit in there Ill try again) If I get the 9650 on the tail then ill put the DS285s on the cyclic and see what happens.

but for now, both birds fly like total dewdy

[EricW]

I also use the Kasama.
I didn't cut the shaft, didn't see any need btw...
I doubt you need the full up/down range of the flybar in-flight.
For me it flies just fine without cutting it.

Eric

[randerson07]

I also use the Kasama.
I didn't cut the shaft, didn't see any need btw...
I doubt you need the full up/down range of the flybar in-flight.
For me it flies just fine without cutting it.

Eric

Thats a good point, if you limit the movement of the flybar, you could probably safely put your gyro on top of the boom.

does the flybar really need to move much?

[Blackrat]

i had a look at a trex600 at our local field and after moving the flybar up and down i was puzzled as to the minimum movement the flybar had, i think the stock movement on the mini T is way too much, i always worry that its gonna catch the canopy or summing on spool up :S

i wouldnt cut the shaft with the amount of movement you got, imo ofcourse

[martino.s@alice.it]

Hello, i have the same problem you described, with the stock mini titan shaft, the flybar movement is limited about 2 mm in both direction.
Im still undecided of to cut or not the main shaft, as i dont have a dremel and it may be a problem for me.
What effect the smaller movement will have in flight?

[Aox]

You don't need to cut the mainshaft down, and it will not affect flight. Flying does not use the full range of the flybar tilt. I have the Kasama head as well, and have been flying it like that for a few months shy of a year, I've never had a problem, and the best 3D guys I know don't have any problems with my MT, full piro globes, piro loops, tumbling circuits, etc.

I never noticed this at install, and just flew it. You'll see my earlier posts on this thread. Months later, I've done work on the bird, of course, and know that I have the same 2mm stickout of the mainshaft. No issues.

The Kasama grips are too tight stock, and you have to sand some blade material, otherwise you'll get horrible shakes at spoolup and down, because the blades can't lead/lag properly. Sanding blade material will have no adverse affect, other than knowing you had to sand the blades to get them to fit.

Just go fly it. If there's no problem when it flies, the theoretical problems we see are moot.

-Aox