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Home✈️Aircraft🚁HelicopterKyosho Caliber/Quest Neo-Caliber series › Caliber5 Tail boom support beams
07-03-2007 02:55 AM  13 years ago
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shesha

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Caliber5 Tail boom support beams
Local flier pointed out something the othre day on the caliber 5 that i did not bother to pay attention to.

The main frame has 2 points as to where the tail boom support booms can be mounted am i correct on that ?

What are the differences of installing lower down or higher up ?
Zero bubble....
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07-03-2007 03:06 AM  13 years ago
heli-cuzz

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The greater the angle the greater the strength.

I'm going to look, I never noticed.

I'm gonna try it and see how it looks. Might need a longer support rod.
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07-03-2007 03:21 AM  13 years ago
shesha

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Cuzz I would think that the part that it attaches to on the tail boom bracket with the back wing can shift forwards without addition for longer support booms, will give it a try this week, hoping the wind drops down.Zero bubble....
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07-03-2007 11:23 AM  13 years ago
heli-cuzz

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It definitely will. I'm gonna give it a try with the stock rods and see how it goes.

Did you get your counter-gear yet?

What a huge difference it makes jumping up one tooth to 15. Amazing.

Now my Caliber5 totally blows my friends Raptor50se out of the sky.
The raptor has nothing on the Caliber now.
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07-03-2007 02:55 PM  13 years ago
cbflys

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I've had mine attached to the lower mounting holes since the beginning. If you want to see pictures of how it looks, just check out my gallery.
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07-03-2007 02:55 PM  13 years ago
aliensil

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Guys, I´ve put a raptor 30 boom suports instead of stock caliber 5 (I try first with rappy 50 but are too long) attached to the lower holes, well the raptor tubes are as twice thick in diameter and strenght of tiny stock, my boom now is extra-firm w/o changing too much the hor fin position.

By the way, I installed the reduction gear on my 5 and cannot rise the heli with my current curves, do you lean the engine a lot? and how much do you modify your pitch or throttle curves? I'm using an OS hyper with 15% nitro 1.7 turns on needle and stock pinion. If I cannot make it fly I return to 14t gear next week.

Don´t let try the rappy boom supports, heliproz sells the mavv's for 5 or 6 bucks.

Thank You
JL
Flying pigs 8,000 feet above Sea level
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07-03-2007 07:18 PM  13 years ago
dkshema

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On first blush, 1.7 turns open on the main is way too much for 15% fuel....

I replaced the counter gear at the same time I replaced my Hyper with the YS.

I didn't have to make a whole of of changes to either the pitch or throttle curves as a result of changing the counter gear.

I did have to reduce the hovering pitch as the heli was wanting to get airborne pretty early as the motor spun up.
-----
Dave

* Making the World Better -- One Helicopter at a time! *

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07-03-2007 08:22 PM  13 years ago
aliensil

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Thank You Dave. Next sat I'm going to close the needle to 1 turn or less, or try with 30% powermaster.Flying pigs 8,000 feet above Sea level
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07-04-2007 05:03 AM  13 years ago
dkshema

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Shesha -- just a thought...If you keep the same boom supports and choose to use the bottom hole at the rear of the frame instead of the upper holes, the horizontal fin and fin clamp will move forward a bit, and if you're already nose heavy, will only make it more so.

----

Alien -- if you're having trouble getting airborne with the new 9:1 gear ratio, something is seriously wrong with either the motor tuning or your setup in general. You should be getting more head speed, and that should translate to more lift.
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Dave

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07-04-2007 08:57 AM  13 years ago
aliensil

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Hi Dave.

Tonight I unmount the entire engine to check for air and oil leakages, well my surprise is to see oil around the head and carb and take the decission to take appart all major pieces on engine to assure everything is OK, the head was 3 bolts that aren't tight screwed and the carburetor are tight but retainer pins are not well inserted leting a small gap between them and carb, so I clean parts and build again. Thats all, at 2.35 a.m. I'm going to bed heli is clean, engine tight and breath tested with no gaps or air loss (at least at home), stock pinion back to heli and redo the throtle linkage as Ray's suggest in manual, boy, what a difference on link speed simply reducing ATV's and relocating the ball links (yes I run on futabas 3151's, nothing fancy servos but difference is noticeable).

I suggest Shesa to use the Raptor 30 boom supports mounted on lower frame holes, raptor supports are longer than Caliber stock and the fin are moved slightly to back, less than a centimeter, and the strengh is a lot noticeable, heli seems and feel robust, forget the cheesy kyosho tubes (remember to use raptor 30 if you want similar distances because the rapps 50's supports are even more longer).

good night

p.d. I almost forgot, thank you Dave for advice, this weekend I'll let go to test the heli again with original curves and set-up, I hope the weather be good.
Flying pigs 8,000 feet above Sea level
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07-05-2007 01:29 AM  13 years ago
shesha

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Thanks for the update

Nope no counter gear as of yet, have not heared back from chris yet....

Trying to source raptor parts here is like finding a needle in a haystack, besides the local TT agent is a joke....

I'll stick with the basic setup, till my flying gets upto par
Zero bubble....
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07-05-2007 05:01 AM  13 years ago
dkshema

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What? Raptor parts hard to get? From the way the Raptor folk talk, they have parts everywhere in the world and no one is ever without spares for the Raptor.

BTW -- My Caliber 5 is now sporting a new MP5-50 and a set of Radix 95mm TR blades. Next chance to try it out is this weekend at the Davenport Fun Fly.

Now if those bozos from Servo City ever decide to ship the servos I bought about a month ago...
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Dave

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Team Heliproz
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07-05-2007 05:43 AM  13 years ago
shesha

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Well for the none flyers as of yet, the local distributor for TT is really screwing them bigtime, I mean really big time, the Raptor 60 is selling for 600KD thats about 1300USD, unless your smart enough to figure out that this guy is in it in the short term, I know the other decent LHS have tried numerous times to convince TT to switch distributors but for some reason TT sticks with that specific person.

Wish him all the luck when he finds out the bad news soon

The good side of it, the Kyosho rep atleast and hopefully woken up and realised that maybe he should bring in the cal5's, thank god for part support over the internet.
Zero bubble....
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07-05-2007 11:14 AM  13 years ago
heli-cuzz

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I changed the boom supports to the lower holes. Longer tubes are not necessary. Definitely stiffens the boom. Thanks to shesha's friend for bringing this to our attention.Fury 55 NIB Furion6 CGY750 fbl helicopter-Frenzy CGY750 fbl nitro-Frenzy fbl NOBAR90
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07-06-2007 12:06 AM  13 years ago
heli-cuzz

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Alrighty then, I just flew one tank with the supports in the lower holes. The tail had such a bad vibration when I flipped my RevMax to the 2000rpm headspeed mode. I dropped the headspeed to 1800 and the vibration lessened, I tried one more time with the higher headspeed. Still a very bad up and down vibration.
I took the TR assembly apart and rechecked the balance. It's still perfect. I then reinstalled the TR assembly and moved the supports back to the upper holes. 2nd tank, no vibration whatsoever and my tank was smooth and air bubble free.
I'm thinking a longer rod would be better in the lower holes.

I tried and I like the look, but for now I'll stay with the uppers.
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07-06-2007 02:47 AM  13 years ago
dkshema

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The downside of moving to the lower holes while using the stock supports is that as the horizontal fin clamp moves forward due to the geometry, you also are changing the "tuning" of the heli and its frame. Vibrations may show up or go away depending upon where along its length the boom is supported.

If you had bad vibes, not only double check your TR assembly balance, but make sure you don't have a bent (even slightly) TR shaft.

And, you could add small bits of trim MonoKote to the TR blades and see if you can make that vibration worse, or better. It might take a few tries, but you might be able to fine tune the TR balance that way.
-----
Dave

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Team Heliproz
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07-06-2007 03:53 AM  13 years ago
Caliber5flyer

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This is the measures of Raptor 5 tailboom, from boom base at frame to the end of TR case and same distance for a Caliber 5, measures for horizontal fin base was made from TR case to frame.

Raptor 50 boom and TR case:
65 cm, fin clamp at 25 cm forward
(from tr case to fin base)

Caliber 5 boom and TR case:
67.5 cm, long fin clamp at 28 cm Forward
(using the raptor 30 boom supports mounted on lower frame holes)

Caliber 5 boom and TR case:
67.5 cm long, fin clamp at 30 cm forward
(using stock supports)

Caliber 5 boom and TR case:
67.5 cm long, fin clamp at 32 cm forward
(using stock supports on lower frame holes)

Total lenght of boom and inserts onto frame:
Raptor 50:
64 cm (about 5 cm insert on frame) vs
Caliber 5 boom:
67 cm (about 3.5 to 4 cm insert onto frame)

Boom diameter:
Raptor .22 cm
Caliber .20 cm

Boom supports diameter
Raptor .08 cm
Caliber .06 cm

Well, it's clearly evident wich one is more robust but I can't tell wich one is more stiff at tail section under heavy loads and 3D manouvers because I'm not so advanced in my skills yet, but my last crashes are very different, Raptor coming down from a stall turn and corking till crash at dirt (dead aileron servo in flight), usual damage, bent boom, spindle, mast, flybar and my beauty TT CF blades... with my caliber 5 hovered at 4 foot of ground and a little of wind: breaked boom, breaked belt, breaked SAB Cf tr blades, breaked TR case, breaked hor and vert fins, bented boom suports, main mast, spindle,flybar, breaked CF blades and MR grips, gears at 9254 servo undented, post flight crash diagnosis, dead air alert module installed onto elevator servo. (I will never use again a chicken alert on an heli, we use usualy because our field are surrounded of very tall and hard grass and dead bushes that cushion crashes very well but hides helis, a beeb sound help found many survivors, specially if you fly in a field plenty of rattlesnakes, poisonous bugs and other cutties).

I hope the measures will help.
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07-10-2007 12:34 AM  13 years ago
shesha

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Am not sure if graphtechrc.com maybe able to help over here, but I believe the owner his name is mark, is a very nice person to deal with with special requirements related to carbon products, might be worth while to contact them and have them custom made to the ideal length.Zero bubble....
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07-10-2007 12:41 AM  13 years ago
cbflys

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Nesconset, NY - USA

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Just so others are aware ...

As I stated above, my tail boom supports have always been in the lower holes. I did not have any vibration issues at all. I couldn't ask for a smoother running heli. No foam in the tank, no vibrating tail fins, just smooth as glass.

Cuzz, is it possible you moved the tail boom and changed the belt tension when you moved the supports? Also, as Dave pointed out, you may just need to re-balance your t/r assembly.
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07-10-2007 02:07 AM  13 years ago
heli-cuzz

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Pittston, Pa. USA

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The belt tension shouldn't change by loosening the clamp for the support rods. It's still clamped into the frame.
The TR assembly is still perfect. I put them back to upper holes and everything is vibe free now.
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Home✈️Aircraft🚁HelicopterKyosho Caliber/Quest Neo-Caliber series › Caliber5 Tail boom support beams
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