RE: H9 Sundowner  
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RE: H9 Sundowner - 5/25/2008 4:58:58 PM   
tsawyer148



Posts: 310
Joined: 3/13/2003
From: Southern, UT, USA
Status: offline 		If you get time you can look through these threads. Somewhere in one of them i believe is some discussion about using a velocity stack. Some of the guys have done alot of testing with different ideas.

http://www.usrainfo.org/forums/topic.cgi?forum=1&topic=581

http://www.usrainfo.org/forums/topic.cgi?forum=1&topic=615&start=0

_____________________________

I Love the smell of glow fuel in the morning....And lately, the smell of epoxy in the evening...

(in reply to hbutler)
       Post #: 676

RE: H9 Sundowner - 5/25/2008 6:07:27 PM   
Mr. Mugen



Posts: 5537
Joined: 3/24/2006
From: Ishpeming, MI, USA
Status: offline 		I see you run it with the wings off. I take it you never saw one roll over doing that eh? I saw it happen only once but vowed to never run my engine without putting my wings on since. Just a thought..... Nice job on the smoker set-up.

Kevin

_____________________________

Everything electronic runs on smoke.....if you let your smoke out, it''s dead! AMA#378033

(in reply to CrashPro)
       Post #: 677

RE: H9 Sundowner - 5/26/2008 5:19:49 AM   
learjet45xp


 

Posts: 94
Joined: 3/22/2007
From: , FL, USA
Status: offline 		OK. So I have read through most of this thread and have a new sundowner headed my way. This will be my first "big plane" . Lately I have been flying my kee-cat w/ a .91FX and jett pipe. She lands fast, has a delta wing, and does a good 100mph. So I am thinking this is a good next step for me. I want the plane to handle well and have good speed...doesn't have to be crazy fast, but 120mph would be good. After reading on here, I think that the engine of choice should be between the moki 1.80 and the moki 2.10. These engines are much cheaper than the gassers, run higher RPM, and are fairly lightweight for their power. So...my question is.

Should I go with the moki 1.80 ...or the moki 2.10? Will the 1.80 even get me to 120mph? Any feedback would be awesome!

Also..I plan on going with the JR 821 servos. I see people advertise them as DS821 and call them spektrum 821's . I am not running a 2.4 system. I run a syn. 7202 and an r790 reciever. These servo's will work just the same, right? They aren't specifically for spektrum systems are they?

Thanks!

< Message edited by learjet45xp -- 5/26/2008 5:41:59 AM >

(in reply to Trollmaster)
       Post #: 678

RE: H9 Sundowner - 5/26/2008 6:51:43 AM   
vince.b


 

Posts: 240
Joined: 2/11/2002
From: Victoria , BC, CANADA
Status: offline 		when in doubt go with morepower.
When I first saw the kit and and the engine it said was a 1.8 4stroke i never gave it a second thought when i ordered the saito 220.
I have a few different props to play with but even with the 18x12 at lower rpm's it still moves along.
I went with the 4 stroke mainly because its my first one and it sound so sweet compared to the 2 strokes that i am so use to.
I now that for all out Hp to wieght ratio 2 strokes will always win. but as soon as i heard a 220 run I fell in love with it and had to have one. I am running 30% in it and the fuel burn is very close to high end 90 heli engine. just a bit over 2 oz a minite.
If i was going for all out speed I just would have put my DA50 in it on a pipe.
I have read of a few guys using the 2.1 moki and it sounds like its also a good match.
the moki 2.1 was my secound choice but all i have is 30% and the moki's max nitro you can run is 5%.
mine came out at 12 pounds 2 oz with the saito 220 with a carbon tube and LG gear. the carbon parts saves about 6 oz.
the kit is nice because it comes with alloy or steel elivator spars so u can mix and match to get a good CG.
My battery is in the rear and I was able to use the alloy tubes in the rear. I guess the steel set is for the gasser.

(in reply to learjet45xp)
       Post #: 679

RE: H9 Sundowner - 5/26/2008 1:54:53 PM   
kid chuckles


 

Posts: 775
Joined: 5/2/2007
From: Granbury, TX, USA
Status: offline 		Just wondering if anyone running the 180 had tried using the heavier elev. rod. I have my battery about a foot behind wing tube and thought with using the heavier tube i might be able to move them up inside the canopy area. Mine is balanced good but hard to get the batteries secured real good.

(in reply to vince.b)
       Post #: 680

RE: H9 Sundowner - 5/26/2008 2:35:54 PM   
CrashPro



Posts: 669
Joined: 7/10/2003
From: Indio, CA, USA
Status: offline 		Short video of my Sundowner with OS 1.60 and smoke system. I will have better video next week,...hopefully will have my 'How Fast' speed recorder installed in plane then also. http://www.rcuvideos.com/item/H7LLV88QLSGMVQ4T

(in reply to kid chuckles)
       Post #: 681

RE: H9 Sundowner - 5/27/2008 5:55:48 AM   
vince.b


 

Posts: 240
Joined: 2/11/2002
From: Victoria , BC, CANADA
Status: offline 		cool smoke
why woyld you make your plane heaver when you can make it liter?
mount the battery in the tail

(in reply to CrashPro)
       Post #: 682

RE: H9 Sundowner - 5/27/2008 1:45:23 PM   
CrashPro



Posts: 669
Joined: 7/10/2003
From: Indio, CA, USA
Status: offline
quote:

ORIGINAL: vince.b

cool smoke
why woyld you make your plane heaver when you can make it liter?
mount the battery in the tail



Actually,..the battery IS mounted in the tail..... I don't care much about it being light as can be and as fast as can be.
The plane was given to me, got a good deal on the engine,.....and I had a smoke system lying around,....

(in reply to vince.b)
       Post #: 683

RE: H9 Sundowner - 5/27/2008 6:29:52 PM   
vince.b


 

Posts: 240
Joined: 2/11/2002
From: Victoria , BC, CANADA
Status: offline 		I just put mine on the scale
saito 220 5371g=11.84lb or 11lb 13.45oz
it has an 18x10 xero wood prop before it had a apc the prop now is half the weight.

(in reply to CrashPro)
       Post #: 684

RE: H9 Sundowner - 5/30/2008 5:09:21 PM   
learjet45xp


 

Posts: 94
Joined: 3/22/2007
From: , FL, USA
Status: offline 		Well. I decided to go with the Moki/Mark 2.1 . They are selling new on Ebay now for $185. Couldn't pass that up. You guys that are running the moki...what have you found the best prop to be? And what sort of RPM are you getting with them? Thanks

Also...I have been searching for days for a radial mount for the moki 2.1 with no luck!!! Anyone know where to buy one?

< Message edited by learjet45xp -- 5/30/2008 6:11:13 PM >

(in reply to vince.b)
       Post #: 685

RE: H9 Sundowner - 5/31/2008 6:37:20 AM   
cavandish


 

Posts: 152
Joined: 8/8/2007
From: christchurch, NEW ZEALAND
Status: offline 		were on e bay ? I cannot find-worth having one 'on the shelf' for that price

For anyone thats interested, I have a bgx1 in my downer, she pulls about 7700 static with the factory muff turning a 16x14 on zero nitro. i have just fitted an os tuned pipe & rpms have just jumped to 8750 static with the 16x14, I can put up with the ugly torpedo hanging underneath for this type of gain !OS recomend to aim for 8k static, so will try 16x15 soon, this seems to be the way to go ????(any advice would be apreciated) this combo will be flown with garmin gps on board, so will be able to report best speed achieved soon, so watch this space!

(in reply to learjet45xp)
       Post #: 686

RE: H9 Sundowner - 5/31/2008 6:44:32 AM   
cavandish


 

Posts: 152
Joined: 8/8/2007
From: christchurch, NEW ZEALAND
Status: offline
quote:

ORIGINAL: learjet45xp

Well. I decided to go with the Moki/Mark 2.1 . They are selling new on Ebay now for $185. Couldn't pass that up. You guys that are running the moki...what have you found the best prop to be? And what sort of RPM are you getting with them? Thanks

Also...I have been searching for days for a radial mount for the moki 2.1 with no luck!!! Anyone know where to buy one?



save your money, the h9 mount works really well, with my bgx(it is one of the better quality bits of hardware in the kit) you just have to reccess one of the angle bracket support screws into the firewall. as the h9 mount needs to sit on top of one of them, also no issues with spinner clearance against the cowl, as h9 mount is slotted, allowing the engine to adjust back & forth.

(in reply to learjet45xp)
       Post #: 687

RE: H9 Sundowner - 5/31/2008 1:15:02 PM   
kid chuckles


 

Posts: 775
Joined: 5/2/2007
From: Granbury, TX, USA
Status: offline 		Vince just trying to get it easier to balance. And more flyer friendly when messing with the batteries. I have two and have tried moving them to the tail. But that makes it tail heavy and that is not good. I was thinking i could use the heavier rod and move the batteries forward. I like fast but want easier flying over fast at all times lol. I have the 180 which is not real fast to begin with. It has been radared at 88-93mph depending on wind. I also weigh em down with stickers lol. I like stickers and use all I can to bling a plane. I cut the RAT out of my crashed ERATIX and put it in front of the cowl alone with the other stickers I uesd. I took the wing decals off the Eratix and applied them to the wing and tail. I used my crashed Super Chipmunk decals also now I have the little Chipmunk and the Pennzoil stickers on it. I even have some Traxx''s sitckers on it. Pretty cool looking though. So anyone that does not like the stickers they get with any plane can send them to me and I WILL use them on something. I think if i change my prop and go to an 18X4 it might pick up a few mph. But it sure flys sweet the way it is and that is all i do with it is fly pattern type flights. No kind of racing. I got that out of my system with cars for 14yr.s straight, every Sat, and Sun. Pix of my RAT lol, one of my cars i raced and the car i bought when i sold race cars. Enjoy.

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(in reply to cavandish)