RunRyder RC
 5  Topic Subscribe
WATCH
 2 pages [ <<    <    ( 1 )     2     NEXT    >> ] 1358 views
Scorpion Power Scorpion Power
HelicopterGasser Model RC HelicoptersOther › Maxum Downunder Maiden done!!!
08-06-2007 04:43 PM  10 years agoPost 1
gorn

rrElite Veteran

Western Australia

My Posts: All  Forum  Topic

Well after a long time getting parts paid for, and getting my setup correct, today she took to the air!
Soooo smooth, I was so excited it was ridiculous!! lol
I just flew one tank, and she never missed a beat, ran like a dream.
No foaming of the fuel at all, horizontal fin was rock steady.
Tail fin had a medium frequency wobble side to side.
At first I thought it must be vibration, but apon inspection I just deemed that the tail fin is pretty flexible, and on a gasser it would move a bit anyway.
I will check everything over to be sure though.
No subtrim needed at all.
No expo dialled in, still a very smooth bird, but needed very small measured stick movements.
Had plenty of pop to it as well, just gentle varation of the throttle, but I liked how it fealt.

Now to anyone with their first gasser, who may have the same question as me "how much should the butterfly be open for it to idle?"
I can now tell you lol. I had to screw the idle screw in until it bottomed out.
Then it was a very nice idle, not too high, just a nice burble without cutting out.
So I set my throttle linkage up to match the throttle arms position with the screw still in, took the screw out, presto, she's set.
Next flight I may richen her up just a tiny smidge.
I set both needles in between 1 3/8 and 1 1/2.
Nothing came loose, tightened the muffler bolts down after the flight.
It was eveident that it was leaking a very small amount, as there was fine line of oil at the front of it.
I'll keep my eye on it.
After my next flight I will retighten the Z-RC insulator down so the gaskets take there proper shape when hot.
All in all Im absolutely extatic
There is nothing like the sound of a gasser, and no video will really let you in on how much blade noise they make when changing direction.

So to recap my exact setup.......

Realheli Maxum gasser
Hanson 26cc 3d Max
Realheli muffler and muffler mount (they supply there own copper gaskets)
Futaba 9255's on cyclic
Futaba 611 gyro and tail servo
Hitec HS-325HB throttle
Spectrum DX7 and AR9000 9 channel RX
Align 2in1 voltage reg with stepdown reg for the tail, 5.8v and 5v
1800mah 2s flight pack
Regular unleaded fuel
Belray H1R full synthetic oil at 32:1
Radix mains, tail and Stubz paddles
No governor yet.
Wet weight, no canopy 6.65kg or 14.63lb
No idea on head speed
Throttle curve 0 20 22.5 25 100
Swash % 60/60/60
Getting plus and minus 10 deg pitch, this is with the head setup for F3C. Can be adjusted for more stability or 3d.
These things fly forever on 1 tank!!

I know that my learning curve has just started, but Id really like to thank everyone here on this forum for answering all my newb questions, and for helping steer me in the right direction.
It is very much appreciated

All going well, I will get some video this weekend.
Will just be hovering and SFF, but at least you will see one fly lol.

For the love of the hobby

PM  EMAIL  HOMEPAGE  GALLERY  Attn:RR  Quote
08-06-2007 04:55 PM  10 years agoPost 2
jfint

rrApprentice

Simi Valley, CA

My Posts: All  Forum  Topic

Congrats Gorn, I'm still supper excited about my first gasser two, and I did have those same questions about idle! Its kinda intimidating not knowing how a gas engine should behave but not wanting to hot-start that big beast.

got pics?

PM  EMAIL  HOMEPAGE  Attn:RR  Quote
08-06-2007 05:06 PM  10 years agoPost 3
gorn

rrElite Veteran

Western Australia

My Posts: All  Forum  Topic

You can say that again! lol
I was very intimidated about a possible hot start, so I just kept turning the idle screw in about an 8th at a time.
I didnt get any pics of the maiden.......I got HD video
But I cant post it....its a bit...ermmm, well Id upset the safety police lol.
Lets just say the video is deceptive in its field of view.
I was there, and I know exactly where the heli was, but on the video it looks to be in a very confined area, and risky.
This wasnt the case. I know that, but the video doesnt look that way, so best not to post it lol.
If we have good weather this weekend, Im hoping to get a boatload of pics, and politically correct video
The canopy is still not painted, so I havent flown with it.
Its off to the painters in a few weeks time.
Just yellow with a black screen, Maxum stickers and pilot name.
I figured I could paint it and make it look like it was done with Crayola's , or for a reasonable fee I could finish off my pride and joy with a very nicely finished paint job.
Cheers

For the love of the hobby

PM  EMAIL  HOMEPAGE  GALLERY  Attn:RR  Quote
08-11-2007 07:27 PM  10 years agoPost 4
gorn

rrElite Veteran

Western Australia

My Posts: All  Forum  Topic

Ive got about 2.5 litres through now. Had a 15 seocond lean run.
Checked the hlei over, maybe air leak, insulator wasnt wobbly, but tightened up a bit more.
Did the same with exhaust. Richened both needles to about 1.5 turns out.
She's smokin lol, BUT she's safe too
So far Im very impressed. Load of power from the Hanson motor. Al...you the man!!
Just hard to find space to fly her now lol.
Big day later today, as in lots of fuel to burn.
Too many beers right now, stupid lol, up too late.
Been raining all week, and today (when the sun comes up) is supposed to be perfect.
Flew in a gusting sea breeze today. No expo, very predictable.
Head settins are on F3C, +10 -2 in Normal.
Will be interesting to get the Tach on her and see the head speed.
To me its high, but thats because she's noisy compared to a 500 class electric lol.
Been checking the plug, and all is well, slobbering rich
L8r

For the love of the hobby

PM  EMAIL  HOMEPAGE  GALLERY  Attn:RR  Quote
08-12-2007 09:46 AM  10 years agoPost 5
Shiro Muji

rrVeteran

Japan

My Posts: All  Forum  Topic

Gorn: at last you are already expriencing what I felt when I first maiden my first Maxum. it was really buttery smooth and powerfull, I was speechless. congratulations to RealHeli for a job well done and for Al of Hanson for a powerful and yet smooth engine.

Welcome to the gasser world my friend and congratulations for you first maiden flight.!!!!

Hope to hear more about your heli.

PM  EMAIL  GALLERY  Attn:RR  Quote
08-12-2007 10:56 AM  10 years agoPost 6
gorn

rrElite Veteran

Western Australia

My Posts: All  Forum  Topic

Hi Shiro
Thanks mate
Ive done 4 litres now, and 3 things to note.
1:gasser exhausts come loose all the time lol
2:so do carb mounts
3:my throttle servo is headed for the bin, it doesnt like gasser vibes.
She's running very rich right now, so she is a bit vibey.
Can see the vertical fin vibrating, but it does that at idle anyway.
Im thinking that it will smooth out more as she breaks in and I lean her out a bit.
Nearly had a catastrophe today. Tail was kicking a little bit, but it was windy, so I thought nothing of it.
Gassed up again, liftoff, wildly wagging tail, land safe.
Apon inspection I saw the cause.......the 611 gyro was seconds away from parting company, and was wobbling around.
The mounting foam had torn a little, the rest just came away.
I check everything before a flight, everything except that lol.
Add one more thing to the checklist
Cheers

For the love of the hobby

PM  EMAIL  HOMEPAGE  GALLERY  Attn:RR  Quote
08-13-2007 11:42 AM  10 years agoPost 7
Shiro Muji

rrVeteran

Japan

My Posts: All  Forum  Topic

Gorn,
To tear the foam tape that attaches the 611 gyro, you must definitely have a severe case of vibe or your wiring has not enough slack and the vibe movements is pulling on it or may be both. Your needles couldn't have been so far off since presumably you followed Hanson's recommendation. So, I suggest you look at the matching of the thottle and pitch curve. In my machine the sweet spot is: Hovering RPM at 1750, the throttle between 34% to 40% and the pitch with a 710mm blades between 3 to 4 degrees at hover. Too much loading will cause your heli to manifest the engine's torque pulses into large vibe movements or resonance. Please take caution on this: 611's even with a low 54% gain reading, is sensitive enough and fast to try and keep on correcting this vibe pulses. If you let this happen for long periods of time, it will overheat your tail servo causing it to persistently drift to the right ( *left if you try to remedy it with a trim)...and if you are in bad luck, it will lead to an uncontrollable pirouette.

By the way, have you programmed a throttle cut on your radio yet? In your previous post, you mentioned about the idle screw--YOU ARE SUPPOSE TO REMOVE IT! Set the ATV so that the full servo travel will fully close and open without binding. Be alert and carefull, you have a roughly 4HP machine!!

PM  EMAIL  GALLERY  Attn:RR  Quote
08-13-2007 11:54 AM  10 years agoPost 8
Shiro Muji

rrVeteran

Japan

My Posts: All  Forum  Topic

Gorn,
...one more thing, if you have tamed the vibes and you still have a tail drift, check and see to it that the mechanical neutral of the tail blade pitch is such that the tail will stay in place at hover. If not, move the servo assy forward to stop left drift or backward if it does the opposite. Perform this steps with the gyro gain set to NORMAL mode (not AVCS).

PM  EMAIL  GALLERY  Attn:RR  Quote
08-13-2007 03:22 PM  10 years agoPost 9
gorn

rrElite Veteran

Western Australia

My Posts: All  Forum  Topic

Hi Shiro
The foam tape tearing is my fault. The gyro was second hand, and I just applied double sided foam tape to the original mounting foam, stupid I know lol
Ive been in contact with Al at Hanson, and from his suggestions and my explanations of how its running, I think Im bang on. At least with the needles anyway.
I have the idle screw backed almost all the way out, its not anywhere near touching the throttle.
I just lower throttle subtrim and the engine cuts.
I havent tach'd the headspeed yet, but its pretty low.
I have no idea how low though. All I know is that for the tail to hold, it uses a LOT of tail pitch.
Piro rate isnt great, but I expected that at a low HS.
The Maxum head has quite stiff damping, so Im thinking that as the motor breaks in, and I raise the HS, that she will smooth out more.
Ive fealt the tail servo after most flights, and its stone cold.
I do notice that I dont get the trademark gasser tail kick due to a rich mixture.
I need a new throttle servo, so she's grounded till Sunday anyway.
Being that this is my first gasser, and I have had no outside help locally, Im really trying to play it safe and keep the motor rich and low in the rev range for now.

Do you know the gear ration for the Maxum?
Cheers mate

For the love of the hobby

PM  EMAIL  HOMEPAGE  GALLERY  Attn:RR  Quote
08-13-2007 03:30 PM  10 years agoPost 10
Shiro Muji

rrVeteran

Japan

My Posts: All  Forum  Topic

I am not quiet sure about the gear ratio. Don't worry I will ask the manufacturer. as to throttle servo try to use a decent digital servo. Mine I use JR8301 and the other is Futaba 9252.

PM  EMAIL  GALLERY  Attn:RR  Quote
08-13-2007 03:49 PM  10 years agoPost 11
gorn

rrElite Veteran

Western Australia

My Posts: All  Forum  Topic

Yeah, I will be getting a good one this saturday.
Undecided JR versus Futaba.
Thanks for asking the gearing question for me, much appreciated.

For the love of the hobby

PM  EMAIL  HOMEPAGE  GALLERY  Attn:RR  Quote
08-13-2007 04:22 PM  10 years agoPost 12
Shiro Muji

rrVeteran

Japan

My Posts: All  Forum  Topic

Futaba 9252 is much faster than JR8301. but both are good servos. Good luck

PM  EMAIL  GALLERY  Attn:RR  Quote
08-13-2007 04:34 PM  10 years agoPost 13
Raffy

rrElite Veteran

Chicago, Illinois

My Posts: All  Forum  Topic

I went to IRCHA on Saturday and did not find a MAXUM. I asked for it from just about anybody and everybody at the flight line and nobody have heard about it.
Who is to debut that model here in the US?

PM  EMAIL  GALLERY  Attn:RR  Quote
08-13-2007 04:39 PM  10 years agoPost 14
Shiro Muji

rrVeteran

Japan

My Posts: All  Forum  Topic

I heard that the representatives name is Pinoy. anyway if you have query you can email the manufacturer. their website is http://www.realheli.com, they have an excellent customer service. you will not be disappointed by this machine.

PM  EMAIL  GALLERY  Attn:RR  Quote
08-13-2007 04:40 PM  10 years agoPost 15
gorn

rrElite Veteran

Western Australia

My Posts: All  Forum  Topic

I had heard that Pinoy was taking one to IRCHA, shame it wasnt there.

For the love of the hobby

PM  EMAIL  HOMEPAGE  GALLERY  Attn:RR  Quote
08-13-2007 04:45 PM  10 years agoPost 16
Raffy

rrElite Veteran

Chicago, Illinois

My Posts: All  Forum  Topic

I had opened my mouth about the Maxum to all my flying buddies here in Chicago about a Heli made in the Philippines. I came empty handed unable to show them pictures and videos of it.
Maybe next year, I should just take a trip there (Philippines) and bring one in myself.

PM  EMAIL  GALLERY  Attn:RR  Quote
08-13-2007 04:48 PM  10 years agoPost 17
Shiro Muji

rrVeteran

Japan

My Posts: All  Forum  Topic

hehehe! I have couple of pictures of my maxum in my posts. maybe you can just show it to your friend lol! you can order directly to the manufacturer like what Gorn did. the transaction is safe.

PM  EMAIL  GALLERY  Attn:RR  Quote
08-13-2007 04:59 PM  10 years agoPost 18
Raffy

rrElite Veteran

Chicago, Illinois

My Posts: All  Forum  Topic

I have seen pictures of it, but I wanted to see it with my own eyes.
I have an Xcell with Bergen gasser conversion that needed to be upgraded to a modern heli like the Maxum. I would love to buy one had I seen one and seen it fly too.
Missed opportunity can change one's venu.

PM  EMAIL  GALLERY  Attn:RR  Quote
08-13-2007 06:19 PM  10 years agoPost 19
gorn

rrElite Veteran

Western Australia

My Posts: All  Forum  Topic

I am hoping to have some high quality video of my Maxum soon.
Trying to burn as much fuel as I humanly can each Sunday lol.
After she is broken in, then I will post some video.
My buddy has a new high definition cam corder, takes 8mp stills as well.
All going well, should have it down shortly.
Might get held up by a build video we are doing shortly for a client.
Either way, you'll see it soon.
Cheers

For the love of the hobby

PM  EMAIL  HOMEPAGE  GALLERY  Attn:RR  Quote
08-17-2007 05:45 AM  10 years agoPost 20
Gopedasia

rrNovice

Manila Philippines

My Posts: All  Forum  Topic

Raffy - The maxum was at IRCHA, i just saw the pics that mark posted in general. You mustve missed Andy.

PM  EMAIL  HOMEPAGE  Attn:RR  Quote
WATCH
 2 pages [ <<    <    ( 1 )     2     NEXT    >> ] 1358 views
Scorpion Power Scorpion Power
HelicopterGasser Model RC HelicoptersOther › Maxum Downunder Maiden done!!!
 Print TOPIC  Make Suggestion 

 5  Topic Subscribe

Sunday, November 19 - 8:54 am - Copyright © 2000-2017 RunRyder   EMAILEnable Cookies

Login Here
 New Subscriptions 
 Buddies Online