RE: H9 Sundowner

RE: H9 Sundowner
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RE: H9 Sundowner - 11/2/2007 2:56:18 PM

wildswan

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From: BirminghamWest Midlands, UNITED KINGDOM
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I noticed looking at this article that the Sundowner was balanced the correct way up.

http://www.rcuniverse.com/magazine/article_display.cfm?article_id=929

When I balanced mine I it was upside down and believe it said to do it this way in the manual, which is correct?

Jason

(in reply to wildswan)

Post #: 501

RE: H9 Sundowner - 11/3/2007 12:23:55 AM

firestone1121

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From: Shillington, PA, USA
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not to get off the subject- BUT would Futaba 3010 servos be ok on this plane?? Do I HAVE to go digital? I mean i know i dont HAVE to but is it that big of a deal?? At 6 volts the 3010 has 2 oz/in more torque than the recommended ds821 JR. i have 3010's in my showtime and havent had a problem. or is it possible to plug jr servos in a futaba reciever? ive heard rumors that the polarities are reversed but does it matter? cant you just program the tx to reverse the servos anyway? sorry if this sounds dumb but these are little things ive always wondered. i am SLOWLY building my SD as my budget allows. also instead of going thru a couple hundred posts ill ask as im sure it was brought up- are there any parts of the airframe that is recommended to reinforce? shes big and shes fast and im sure theres incredible stress at 100mph on the airframe. any suggestions?? thanks!

Cory

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Post #: 502

RE: H9 Sundowner - 11/3/2007 1:16:16 AM

kid chuckles

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From: Granbury, TX, USA
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Sir I think the polarities are different if using JR reciever and Futaba radio. But you can change it yourself or maybe have the HS owner or operator do it for you but the servos will work ok. Now i am not the most experienced guy in the hobby so you might wait for someone to confirm. Hope this helps you.

(in reply to firestone1121)

Post #: 503

RE: H9 Sundowner - 11/3/2007 1:50:37 AM

Leseirf

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From: Bloomington, IN, USA
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Futaba & JR servos are interchangable. Only thing is you may have to shave the tab off the futaba connector to fit a JR rx. I'm using the 821's in the tail but Hitec HS5245's in the wing. I really like the 5245's, not quite the torque of the 821's but 1/2 the size and 2/3 the weight. They are a little faster and seem to me to have a more positive feel. I raced mine last weekend in Parker and had no problems at all. (other than my thumbs!

)

Mike

(in reply to kid chuckles)

Post #: 504

RE: H9 Sundowner - 11/3/2007 3:18:28 AM

firestone1121

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From: Shillington, PA, USA
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is a few grams THAT critical? but i guess it would be considering drag and wing loading right? i plan on getting the saito 180 for mine- was kinda hoping it'd be my first gasser but ive heard lots of good things with the 180 in this bird. if anything this is going to be my first 4 stroke either way! ive heard of reliability issues with the 26gt2 but it couldve been banter. which stab tubes should i use if im going with the 180? this is my fourth plane (with 1 minor mishap- a broken wing

) so im pretty confident on flying this girl. im more excited than anything. but i think im going to have to wait til spring- we are getting lows in the low 30's to upper 20's

thanks - Cory

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Post #: 505

RE: H9 Sundowner - 11/3/2007 6:45:15 AM

dgliderguy

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From: Snohomish, WA, USA
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quote:

ORIGINAL: firestone1121

is a few grams THAT critical? but i guess it would be considering drag and wing loading right? i plan on getting the saito 180 for mine- was kinda hoping it'd be my first gasser but ive heard lots of good things with the 180 in this bird. if anything this is going to be my first 4 stroke either way! ive heard of reliability issues with the 26gt2 but it couldve been banter. which stab tubes should i use if im going with the 180? this is my fourth plane (with 1 minor mishap- a broken wing ) so im pretty confident on flying this girl. im more excited than anything. but i think im going to have to wait til spring- we are getting lows in the low 30's to upper 20's

thanks - Cory

Cory,

I used the solid stab tubes in my Saito 1.80-powered Sundowner, and the CG came out almost dead-on perfect, with no lead required in the tail. I have a 4.8v 2700mah Nimh battery pack strapped on the underside of the engine mounting box, under the cowl.

No, a few grams is not at all critical for an airplane this size. I think Mike was only pointing out one advantage of the Hitec servos (I really like the Hitec line, too, btw).

I don't know what you heard about the Evo 26GT, but both the Evo 26GT and the 35GT are two of the most reliable and easy to start/run gasoline engines on the market today. No complaints from this happy owner.

Don.

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Post #: 506

RE: H9 Sundowner - 11/3/2007 1:10:08 PM

Leseirf

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From: Bloomington, IN, USA
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Agreed, a few grams won't make a difference but the overall weight on this plane definately does. At the first race in Ohio we flew with a 14.5lb minimum. That and 22oz of fuel made for a very difficult plane to fly. For Parker they set the minimum to 13.5lbs and I managed to get mine to 13.54 with a 10 oz tank(plenty for a heat but only 6-8minutes flying time). Much more pleasant to fly at this weight. I've read it's a absolute joy at 12.5lbs. Not possible with the Evo 35. I think if it's possible to balance with the light tubes use them. Most racers are putting the battery in the tail and mounting all components as far rearward as possible to offset the heavy engine.

Mike

(in reply to dgliderguy)

Post #: 507

RE: H9 Sundowner - 11/3/2007 1:34:48 PM

kid chuckles

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I used the 180 and the lighter tube. May be using the heavier tube you could put the battery or batteries in the fueselage easy to get to. Where it would seem they need be. I have my batteries one for on board glow and one for reciever behind the wing toward tail of plain. Almost as far as reachable. Maybe had i used the heavier Stab Rod it would balance with the batteries further forward. I will be trying mine that way when I get around to it. Right now just trying to get more better lol. Don't want to crash this plane just because of me being in a rush to fly it. I have flown it twice but was just so nervous it was not fun. It was really pretty easy to fly and land but still was just to nervous to have FUN. I don't expect to race it or anything so the FUN factor for me is what I am after. Good luck. Oh i am using a 4.8V 4 cell flat for glow and 6v. 5cell flat for reciever. The 4.8 is the battery that comes with a DX7 and the 6v in not much bigger.

(in reply to Leseirf)

Post #: 508

RE: H9 Sundowner - 11/3/2007 1:57:04 PM

Airnondas

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From: Laval, QC, CANADA
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Every ounce you add to this plane counts.

When I had the Saito 180 installed I balanced with the battery right over the landing gear block and used
the two light stab tubes.

The plane although not a rocket, flew and handled like a dream.

Now with the Moki 2.10 I have the battery, a 5 cell 2700 mah installed in the tail and had to swap one of the light tubes for the solid heavier one to counter the weight of the Moki.

Much faster now but also need to be more cautious on the sticks.

You do not float her in on landings; you have to fly her in.

The flight characteristics of the Sundowner and the Moki 2.10 remind me of a well mannered war bird.

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Airnondas

< Message edited by Airnondas -- 11/3/2007 11:09:32 PM >

(in reply to kid chuckles)

Post #: 509

RE: H9 Sundowner - 11/3/2007 6:07:00 PM

Leseirf

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From: Bloomington, IN, USA
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Many of us are hoping for a switch to the Moki for next years USRA races. Should be faster and lighter than the Evo35. Of course that will leave me with a 4lb paperweight as I fly strictly electric other than the racers.

Mike

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Post #: 510

RE: H9 Sundowner - 11/4/2007 12:47:30 AM

kochj

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From: Victoria, MN, USA
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Why would you switch to a Moki err ummm, MARK engines for next year??
You can go into the Linier DOminater 1500 class if you want that???
The reason for the GIANT in Giant scale, is for GAS engines.
THat is what is used in the upper echalean of the food chain anyway.

Get Evolution or MVVS to upgrade that 35gt and make it lighter!!
Then provide a upgrade kit for the current evo GT 35cc owners to use for the next season!!!
Why reinvent the wheel? It would turn many people away that once looked twards this as a FUN racing event!!
It just seems back asswords to me!

Jusitn

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Post #: 511

RE: H9 Sundowner - 11/4/2007 1:20:58 AM

Leseirf

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From: Bloomington, IN, USA
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I flew both Dominator and Sundowner this year. Took 1st or 2nd in every Sundowner heat then cut out in the final.

I definately prefer gas but I'd really like to see the Sundowners faster and lighter. The Dominator is faster and much more fun to fly but it's not scale and (IMHO) it's butt ugly. If there was a way to upgrade the Evo 35 I'd be all for it but I don't really see it happening. Not much to do about it either way. Gotta wait till the powers that be decide what to do. I hope to be flying GT next year anyway.

FWIW the upper echalean (F1 & Unlimited) run alcohol not gas. I think it'll be a few years before I'm ready for those monsters anyway. Gotta wait till KMac retires if I have any hope of winning.

Mike

(in reply to kochj)

Post #: 512

RE: H9 Sundowner - 11/4/2007 2:00:18 AM

firestone1121

Posts: 185
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From: Shillington, PA, USA
Status: offline

[/quote]

Cory,

I used the solid stab tubes in my Saito 1.80-powered Sundowner, and the CG came out almost dead-on perfect, with no lead required in the tail. I have a 4.8v 2700mah Nimh battery pack strapped on the underside of the engine mounting box, under the cowl.

[/quote]

Which brings me to my next question...... thinking of going with a sub C hydrimax 6V 4200 mah rx battery. Too much for this plane? i want 6 volts but more than 2000 mah(was hoping like 2500 to 3000 but hydrimax only has a 5 cell in AA size up to 2000 mah which is what i use in my showtime right now) its an awesome battery and can put 10 flights on it in a single charge no problem so im thinking if i stick with the 3010 sevos(which is exactly what i have in the ST) i should expect to see roughly the same number of flights per charge right? on the other hand im thinking that the servos will draw more because of larger surface deflection so i may actually have fewer flights on it. i dunno maybe im thinking way too deep into this but can somebody help me out? what is a good battery for this plane? like i said sub c's are BIG and heavy so would it still work ok? thanks guys

Cory

_____________________________

I'd rather have the bottle in front of me than a frontal lobotomy!

(in reply to dgliderguy)