Mountain Models F-22 Foam Parkjet- NOW RELEASED and AVAILABLE! - Page 2

buzzltyr · Oct 13, 2009, 11:11 AM

When I picked up my F-22 kit at NEAT, I got a second one for a flying buddy.
We got together last week for a quick flying session, so I thought I'd post up a pic of both our F-22's.

In a recent conversation, Brian told me that he is almost ready to release the F-22. He's waiting on some CF for the spar.

Mark

aramsdell · Oct 14, 2009, 08:42 PM

I got one at NEAT ! I just finished it Friday night. Saturday it flew. WoW!. 3.5 oz. with a 3S 300 pack and an eflite park 180. I only have a 4.5 inch prop though. going to change to a 5 or 5.5 X 4 and try that. Currently just over 1:1 power to weight ratio. At this weight it just makes me laugh out loud ! I flew in a 10 mph wind. The guys at my club field were all laughing and pointing and ooohing ! because I was hovering nose in and then flew backwards !....Even in almost dead air landing was more of a plop than a slide. Flare up and stall from 12" plop. I thought a loop in 4' or less was good but I guess someone has it going even tighter.
I'd love to see someone's video of this. I haven't the time during the week to do one.

Bing44 · Oct 21, 2009, 12:04 PM

Quote:

Originally Posted by buzzltyr

When I picked up my F-22 kit at NEAT, I got a second one for a flying buddy.
We got together last week for a quick flying session, so I thought I'd post up a pic of both our F-22's.

In a recent conversation, Brian told me that he is almost ready to release the F-22. He's waiting on some CF for the spar.

Mark

I see that your buddies plane has a different size elevon than yours. Is his a little more responsive or does the higher area on his not really affect flight?

jim, waiting, toe tapping, tap, tap, tap

buzzltyr · Oct 21, 2009, 03:07 PM

Jim, after NEAT, Brian was a little concerned about the elevon area, and the fact that the cutouts meant there was less surface area directly in the propwash. So my buddy added some area by glueing some thin foam over the existing elevons.

Curiously, he doesn't see any difference between his and mine, and is thinking about cutting the additional foam off. I do believe that Brian increased the size of the elevons in directly behind the prop a bit from the kit I got.

I talked to Brian last night, and he is very close to releasing the F-22. As soon as he does, I'll change the title of this thread and note that it's been released, for those who have an interest.

I took mine out this morning and flew it for almost nine minutes. It is just a bunch of fun to fly. I've even dorked it in on landing a couple of times, and haven't severely damaged it, although I did knock the foam piece that the motor mount attaches to out this morning. A little glue and I will be good to go again.

Mark

Mountain Models · Oct 21, 2009, 03:53 PM

Well, the instructions are done and kits are cut and bagged up, ready to go. I even got shipping boxes for them yesterday.

I have to finish up the "photo" model for the web site. It's painted, and I'm waiting for the paint to finish drying. I'll get photos later today and start getting everything added to the web site for it; motors, ESC's, servos, batteries, and finally, the kit.

So, depending on the "honey-do" list for today, and the sailplane club meeting tonight, it'll be available for sale tonight or tomorrow morning.

Brian

Mountain Models · Oct 23, 2009, 06:04 PM

The F-22 is released! Get it here:

http://www.mountainmodels.com/produc...roducts_id=637

The final release price is $23.95

Here's some pictures, and I'll get a video up in the next day or so.

-Brian-

buzzltyr · Oct 27, 2009, 10:42 AM

I got out yesterday for a couple of flights with my F-22. My flying buddy met up with me with his as well.

I had been having an issue with left turns -- right turns were fine, but turning left was sometimes an issue. I finally thought to check the lateral balance of the model, and I found that the plane was seriously weighted on the right side (ESC on the right side, and the battery sort of center/right). So I moved the battery to the left side a bit, and that's how I flew it yesterday. Flew much better with the lateral balance correct. I don't have a lot of experience with pusher jet type models, so the lateral balance issue never really occurred to me. So, if you're flying one of these, I'd suggest that you check the lateral balance as well as the CG when you fly it. It will fly much better if it's not off balance!

Mark

Mountain Models · Oct 27, 2009, 10:49 AM

Here's a video of the F-22 flying indoors. Keep in mind that this was the first time I've flown indoors in about 10 years, so the flying isn't all that great. But, it gives you a point of reference as to how it can fly.

Higher Res (~15 MB)

F-22 Mountain Models Electric Radio Control Airplane (2 min 36 sec)

Lower Res (~4 MB)

F-22 Mountain Models Electric Radio Control Airplane (Low Res) (2 min 36 sec)

Smokescreen38 · Oct 28, 2009, 01:07 PM

I saw these for sale at NEAT...extremely cool little kit!!

Nice job, Mountain Models.

CoClimber · Oct 29, 2009, 08:23 AM

Glad to see you are still flying at the City Auditorium. I miss that.

I've flown my F-22 in my yard which is something as I believe it is smaller than the auditorium. Lots of fun!

Doug

KeithK · Oct 29, 2009, 10:57 PM

Hey Doug, when are you going to stop by again?

What about a ducted fan version of the f-22? I have a 40mm GWS fan that needs a home...

Keith

aramsdell · Nov 10, 2009, 10:25 PM

This little beast came home from NEAT with me. What a blast. I beat it up a little today trying to put it into the back of my S-10 pick-up. I had better luck later in the afternoon when I landed perfectly on top of the hard tonneau cover. http://www.maineaerialphotography.net/F-22.MOV

This is a great outdoor flyer in winds < 5 mph. Over that things get dicey. I have flown in over 10 mph but it takes most of the fun away.

aramsdell · Nov 26, 2009, 09:31 PM

My video was obviously this model doing some high alpha, which isn't easy without rudders. I cut the rudders loose tonight at about the 50% back point . I beveled them and taped them on. I used 2 tiny pieces of ply for control horns and one little cf rod with metal ends to tie them together. A metal pushrod goes forward from the left vertical stab to a servo mounted inside with just the control horn coming through the top deck. That servo is just about on the cg mark. I might move the battery forward a 1/4 or 3/8 as I was faintly tail heavy before.
I think , just looking at this setup, that I may have to add aileron to rudder mix to counter what may be an adverse yaw due to the rudder being so close to the prop. The left rudder moving into the prop-wash on a right turn looks like it would give a left aileron type action and visa-versa.

Mountain Models · Nov 27, 2009, 07:41 AM

Let me know how the rudders work out for you. As you noticed, when you get into very high alpha flight, you basically watch it slowly turn to the left. You can get it to turn right with blips of throttle and right aileron, but it takes some work.

P.S. I absolutely LOVE your parking job in the bed of your truck!

Brian

aramsdell · Nov 27, 2009, 08:05 AM

Darn Maine Weather! It's 8:04am and the rain has begun. If it comes close to stopping for a minute I'll get out and try this with the rudders.
Alan

Oct 13, 2009, 11:11 AM	#16
buzzltyr Registered User Join Date: Jun 2003 Location: Longmeadow, Massachussetts, United States Posts: 1,310	Two F-22's When I picked up my F-22 kit at NEAT, I got a second one for a flying buddy. We got together last week for a quick flying session, so I thought I'd post up a pic of both our F-22's. In a recent conversation, Brian told me that he is almost ready to release the F-22. He's waiting on some CF for the spar. Mark Attached Thumbnails 94.6 KB · Views: 146

Oct 23, 2009, 06:04 PM	#21
Mountain Models BYOP - Build Your Own Planes Join Date: Mar 2001 Location: Colorado Springs, CO Posts: 1,419	F-22 Released! The F-22 is released! Get it here: http://www.mountainmodels.com/produc...roducts_id=637 The final release price is $23.95 Here's some pictures, and I'll get a video up in the next day or so. -Brian- Attached Thumbnails 32.7 KB · Views: 55 26.8 KB · Views: 57 27.8 KB · Views: 56 36.2 KB · Views: 53 42.2 KB · Views: 56 28.7 KB · Views: 53 36.5 KB · Views: 56

Oct 29, 2009, 10:57 PM	#26
KeithK What Canary? Join Date: Jul 2000 Location: Colorado Springs, CO, USA Posts: 1,394	Hey Doug, when are you going to stop by again? What about a ducted fan version of the f-22? I have a 40mm GWS fan that needs a home... Keith Last edited by KeithK; Oct 30, 2009 at 11:49 AM.

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Oct 14, 2009, 08:42 PM	#17
aramsdell Registered User Join Date: Jun 2006 Posts: 126	I got one at NEAT ! I just finished it Friday night. Saturday it flew. WoW!. 3.5 oz. with a 3S 300 pack and an eflite park 180. I only have a 4.5 inch prop though. going to change to a 5 or 5.5 X 4 and try that. Currently just over 1:1 power to weight ratio. At this weight it just makes me laugh out loud ! I flew in a 10 mph wind. The guys at my club field were all laughing and pointing and ooohing ! because I was hovering nose in and then flew backwards !....Even in almost dead air landing was more of a plop than a slide. Flare up and stall from 12" plop. I thought a loop in 4' or less was good but I guess someone has it going even tighter. I'd love to see someone's video of this. I haven't the time during the week to do one.

Oct 21, 2009, 03:07 PM	#19
buzzltyr Registered User Join Date: Jun 2003 Location: Longmeadow, Massachussetts, United States Posts: 1,310	Jim, after NEAT, Brian was a little concerned about the elevon area, and the fact that the cutouts meant there was less surface area directly in the propwash. So my buddy added some area by glueing some thin foam over the existing elevons. Curiously, he doesn't see any difference between his and mine, and is thinking about cutting the additional foam off. I do believe that Brian increased the size of the elevons in directly behind the prop a bit from the kit I got. I talked to Brian last night, and he is very close to releasing the F-22. As soon as he does, I'll change the title of this thread and note that it's been released, for those who have an interest. I took mine out this morning and flew it for almost nine minutes. It is just a bunch of fun to fly. I've even dorked it in on landing a couple of times, and haven't severely damaged it, although I did knock the foam piece that the motor mount attaches to out this morning. A little glue and I will be good to go again. Mark

Oct 21, 2009, 03:53 PM	#20
Mountain Models BYOP - Build Your Own Planes Join Date: Mar 2001 Location: Colorado Springs, CO Posts: 1,419	Well, the instructions are done and kits are cut and bagged up, ready to go. I even got shipping boxes for them yesterday. I have to finish up the "photo" model for the web site. It's painted, and I'm waiting for the paint to finish drying. I'll get photos later today and start getting everything added to the web site for it; motors, ESC's, servos, batteries, and finally, the kit. So, depending on the "honey-do" list for today, and the sailplane club meeting tonight, it'll be available for sale tonight or tomorrow morning. Brian

Oct 27, 2009, 10:42 AM	#22
buzzltyr Registered User Join Date: Jun 2003 Location: Longmeadow, Massachussetts, United States Posts: 1,310	I got out yesterday for a couple of flights with my F-22. My flying buddy met up with me with his as well. I had been having an issue with left turns -- right turns were fine, but turning left was sometimes an issue. I finally thought to check the lateral balance of the model, and I found that the plane was seriously weighted on the right side (ESC on the right side, and the battery sort of center/right). So I moved the battery to the left side a bit, and that's how I flew it yesterday. Flew much better with the lateral balance correct. I don't have a lot of experience with pusher jet type models, so the lateral balance issue never really occurred to me. So, if you're flying one of these, I'd suggest that you check the lateral balance as well as the CG when you fly it. It will fly much better if it's not off balance! Mark

Oct 28, 2009, 01:07 PM	#24
Smokescreen38 getting a shift on Join Date: Jun 2005 Posts: 4,368	I saw these for sale at NEAT...extremely cool little kit!! Nice job, Mountain Models.

Oct 29, 2009, 08:23 AM	#25
CoClimber Mountain Models Wannabe Join Date: Mar 2001 Location: Ithaca, NY USA Posts: 4,366	Glad to see you are still flying at the City Auditorium. I miss that. I've flown my F-22 in my yard which is something as I believe it is smaller than the auditorium. Lots of fun! Doug

Nov 10, 2009, 10:25 PM	#27
aramsdell Registered User Join Date: Jun 2006 Posts: 126	This little beast came home from NEAT with me. What a blast. I beat it up a little today trying to put it into the back of my S-10 pick-up. I had better luck later in the afternoon when I landed perfectly on top of the hard tonneau cover. http://www.maineaerialphotography.net/F-22.MOV This is a great outdoor flyer in winds < 5 mph. Over that things get dicey. I have flown in over 10 mph but it takes most of the fun away.

Nov 26, 2009, 09:31 PM	#28
aramsdell Registered User Join Date: Jun 2006 Posts: 126	My video was obviously this model doing some high alpha, which isn't easy without rudders. I cut the rudders loose tonight at about the 50% back point . I beveled them and taped them on. I used 2 tiny pieces of ply for control horns and one little cf rod with metal ends to tie them together. A metal pushrod goes forward from the left vertical stab to a servo mounted inside with just the control horn coming through the top deck. That servo is just about on the cg mark. I might move the battery forward a 1/4 or 3/8 as I was faintly tail heavy before. I think , just looking at this setup, that I may have to add aileron to rudder mix to counter what may be an adverse yaw due to the rudder being so close to the prop. The left rudder moving into the prop-wash on a right turn looks like it would give a left aileron type action and visa-versa.

Nov 27, 2009, 07:41 AM	#29
Mountain Models BYOP - Build Your Own Planes Join Date: Mar 2001 Location: Colorado Springs, CO Posts: 1,419	Let me know how the rudders work out for you. As you noticed, when you get into very high alpha flight, you basically watch it slowly turn to the left. You can get it to turn right with blips of throttle and right aileron, but it takes some work. P.S. I absolutely LOVE your parking job in the bed of your truck! Brian

Nov 27, 2009, 08:05 AM	#30
aramsdell Registered User Join Date: Jun 2006 Posts: 126	Darn Maine Weather! It's 8:04am and the rain has begun. If it comes close to stopping for a minute I'll get out and try this with the rudders. Alan