RE: Great Planes Reactor GP/EP 3D ARF .46-.70

RE: Great Planes Reactor GP/EP 3D ARF .46-.70
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RE: Great Planes Reactor GP/EP 3D ARF .46... - 5/15/2008 1:59:01 AM

Zippi

Posts: 3092
Joined: 6/29/2004
From: Evansville, IN, USA
Status: offline

Thanks for the info guys. I've ran a couple Pattern planes with a Saito 125 inverted and the tank was higher than the carb and never had an issue. I didn't think I was going to have a problem with this setup but I guess I am. I had the low end tweaked out but still had the high end a little rich. After I shut it off I couldn't get it started back up due to it blowing raw fuel out the exhaust which means, yeap, it's flooded. I didn't think an 82 would need a different setup than a 125. Damn the bad luck

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Post #: 876

RE: Great Planes Reactor GP/EP 3D ARF .46... - 5/15/2008 3:12:15 AM

kochj

Posts: 1507
Joined: 12/5/2005
From: Victoria, MN, USA
Status: offline

Well guys..... I am Estatic!llll(spelling?)
I ran my ST .51 on my reactor today with a 10X4 APC,,,,, Awsome!....
Plenty of RPM's and great transition...

I had a strait through/ unmuffled pipe but I thought that was little too load...

I then put on a muffled pipe. It was a ROssi .60 muffled pipe....(quite or 2-3 cones)
No transition issues
No noticeable loss in rpms (not really wanting all out power, just smooth power)
It was so cool to hear just the carb intake, prop and the over amounts of airframe noise!....
Hardly any noise comming from the exhaust!!!!

I will try a Dave B. hush pipe connector... That should take care of that ......
really amazing ..... It sounds like a race bike!
I am excited to get that mount on it and see how quiet I can get it....

Added bonus to all this is that the exhaust fumes and oil go out the bottom Back of the fuse with the angled silicone tube on the end of the stinger....

This this should have Insane pullout and unlimited verticle to do anything....

ConS:
the 2-screws got loose on the carb...
I still have to balance the 11X4 Apc and try that one.... (I hate balancing props.... especially the small ones..... they take forever)

Sorry to be winded but I am just pumped to get this thing up and flying!!!.

Justin

< Message edited by kochj -- 5/15/2008 3:13:03 AM >

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Post #: 877

RE: Great Planes Reactor GP/EP 3D ARF .46... - 5/15/2008 11:27:21 PM

Zippi

Posts: 3092
Joined: 6/29/2004
From: Evansville, IN, USA
Status: offline

kochj,

I know what you mean about getting this plane in the air and flying. I think I have my problems ironed out and I ran the Saito 82 again today and all went well and it sounds good so if the weather is ok on Saturday it's getting the maiden flight

.

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"It Ain''''t Lookin Good"
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Post #: 878

RE: Great Planes Reactor GP/EP 3D ARF .46... - 5/16/2008 2:38:36 AM

Moodyman

Posts: 68
Joined: 10/9/2006
From: N. Richland Hills, TX, USA
Status: offline

I flew my buddys Reactor that is e powered and WOW! Now I want one but being a glow flyer, I want to put a glow engine in it. The closest engine I already own is a Saito 100 4-stroke. Has anyone seen one of these with an engine that size? I believe it has the same dimensions as a .91 4 stroke. I would welcome any opinions or input.
KM

(in reply to Zippi)

Post #: 879

RE: Great Planes Reactor GP/EP 3D ARF .46... - 5/16/2008 4:08:36 AM

kolarshooter

Posts: 654
Joined: 5/7/2004
From: Paso Robles, CA, USA
Status: offline

quote:

ORIGINAL: Moodyman

I flew my buddys Reactor that is e powered and WOW! Now I want one but being a glow flyer, I want to put a glow engine in it. The closest engine I already own is a Saito 100 4-stroke. Has anyone seen one of these with an engine that size? I believe it has the same dimensions as a .91 4 stroke. I would welcome any opinions or input.
KM

KM,

My recollection (which may not be correct) is that the 100 is a little bit longer than the .91. My .91 fit using the stock (B.S.) engine mount. I had to modify the mount a bit, but it worked great. The 100 and the .91 weigh exactly the same, so I can honestly tell you that your plane would fly really well with that engine. It should come in just a hair over 6# which will give the plane a very low wingloading.

I might recommend the CF gear for it, since the stock gear is quite flimsy and you'll be turning a large diameter prop. You might also needt an aftermarket mount to make a 100 fit easily. I think it would be worth whatever mods were required to get that engine to fit (IF any mods were required.)

I wouldn't hesitate for a minute to use the 100 in this plane if it isn't too long.

Best of luck!

_____________________________

JR 9303; DX-7; 34% CA Extra 300L/DA100; H-9 33% Edge 540/DA100; EF Edge Profile/S-72; Reactor/S-91; Foamies

(in reply to Moodyman)

Post #: 880

RE: Great Planes Reactor GP/EP 3D ARF .46... - 5/16/2008 4:37:14 AM

Moodyman

Posts: 68
Joined: 10/9/2006
From: N. Richland Hills, TX, USA
Status: offline

kolarshooter, Thanks for the quick reply and info. I just checked the Saito website and found the Mounting Dimensions for the 100 are: 115 x 60 x 128 mm. For the .91 the Mounting Dimensions are: 116 x 60 x 117 mm. I presume the 117mm and 128mm are the length. Do you think there is about 1/2" to play with between the firewall and the spinner? Also what mods did you make to your engine mount?
Thanks again......

(in reply to kolarshooter)

Post #: 881

RE: Great Planes Reactor GP/EP 3D ARF .4... - 5/16/2008 4:53:22 AM

kolarshooter

Posts: 654
Joined: 5/7/2004
From: Paso Robles, CA, USA
Status: offline

The mount is a generic mount with an integrated nose-wheel mount. The mount is very thick and doesn't allow you to move the engine aft far enough without cutting a piece off of the mount. I was too anxious to wait to go the the LHS to buy a better mount, so I just modified the existing mount to suit my engine. Mine has a SLIGHTLY larger gap between the back spinner and the cowling. Most guys set their planes with this much or more space, but it's a bit more than I would usually tolerate. You could easily modify the firewall, if required, to clear the back of the carb. You might also be able to mount the cowl further forward a bit if you need a little bit more length.

Mounting the tank in the battery compartment makes fuel feed, CG, and throttle servo mounting a breeze.

I just looked at my plane...through the bottom of the cowl, (which isn't a great view, BTW) it APPEARS that I could go back as much as 1/2 inch before the carb hits the firewall if I used a conventional 2 piece mount.

There you are...good luck!

< Message edited by kolarshooter -- 5/16/2008 4:54:46 AM >

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Post #: 882

RE: Great Planes Reactor GP/EP 3D ARF .4... - 5/16/2008 6:51:55 AM

Moodyman

Posts: 68
Joined: 10/9/2006
From: N. Richland Hills, TX, USA
Status: offline

Great in depth answer, thanks for taking the time. I'll have to order one from Tower, with the $20 discount its too good to pass up. I'll post on here with pics when I get it and let everyone know what's involved with the 100.
KM

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Post #: 883

RE: Great Planes Reactor GP/EP 3D ARF .4... - 5/17/2008 8:44:59 PM

Zippi

Posts: 3092
Joined: 6/29/2004
From: Evansville, IN, USA
Status: offline

I loaded up my Reactor and the camera this morning and headed to the field even though the forcast was for a nice day but winds up to 15 mph. Once the winds really got to blowing it was more like 20-25 mph according to our digital weather vane. I got there about 8:00 to try and get a few flights in before the winds really kicked up. Even though it was really windy the plane took off nice and straight without any problems and only needed two clicks of up elevator. I was wanting to get a video but no one showed up so I got a couple more flights in before the wind really picked up and snapped a few pics. This plane seems to fly great and it handles the wind pretty good for a small size plane. Can't wait for a day with normal winds to see what it will do.

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Post #: 884

RE: Great Planes Reactor GP/EP 3D ARF .4... - 5/18/2008 4:54:01 AM

kochj

Posts: 1507
Joined: 12/5/2005
From: Victoria, MN, USA
Status: offline

mOODYman,
I noticed that when I followed the manual for prop plate measurement, it was almost too far aft for the cowl to fit on.
I had to really force it one and even cut some of the bottom sides to get it to go as far back as I needed...

I think that you could easily mount the engine little forward w/0 too many issues.
CG may be slightly affected but not by much...

Zippi.
Good to hear your flights went well..
I was going to fly it today but when setting my Elevator throws my micro sevos seemed inadiquate!!!

the lesf one had a hard time keeping on center and I had a difficult time getting the throws to match..... I then discovered one of my ailiron servos went bad!!\
Talk about luck!!! or lack there of!!!

I had placed my lypo battery back in the fuse. behind the airdeflector, so that I could balance it......
I will switch to 2-regular servos (perhaps even the rudder) even though the Rudder servo is of better quality,,, IT will help balance things out....

I just do not want my plane to crash due to a servo not having enough power to prevent flutter, or just poor handling!!!

I plan to really wrining out this plane..... I would feel much more comfortable using standard size servos!!!!!!

Piece of mind is priceless!!

Justin

_____________________________

Winning isn''''t everything, it''''s all there is.

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Post #: 885

RE: Great Planes Reactor GP/EP 3D ARF .4... - 5/18/2008 4:49:09 PM

kolarshooter

Posts: 654
Joined: 5/7/2004
From: Paso Robles, CA, USA
Status: offline

quote:

ORIGINAL: kochj

mOODYman,
I noticed that when I followed the manual for prop plate measurement, it was almost too far aft for the cowl to fit on.
I had to really force it one and even cut some of the bottom sides to get it to go as far back as I needed...

I think that you could easily mount the engine little forward w/0 too many issues.
CG may be slightly affected but not by much...

There is a misprint in the construction manual. In one place in the manual it says that the measurement from spinner backplate to firewall is 4-5/16 inches, when it is actualy 4-15/16. This fact has been thoroughly covered in this thread a few times. While on that subject, you should take the time to actually read this thread...there's a lot of great information available. It shouldn't take but a half-hour of your time.

quote:

.
Good to hear your flights went well..
I was going to fly it today but when setting my Elevator throws my micro sevos seemed inadiquate!!!
the lesf one had a hard time keeping on center and I had a difficult time getting the throws to match..... I then discovered one of my ailiron servos went bad!!\...I just do not want my plane to crash due to a servo not having enough power to prevent flutter, or just poor handling!!!

You likely aren't using micro servos...I think you meant mini servos. Also,speaking of servos... Your servos aren't as likely to cause fluttering as having hinge gaps which aren't sealed. Everyone should seal their hinge gaps on just about every type of plane.

quote:

I had placed my lypo battery back in the fuse. behind the airdeflector, so that I could balance it......
I will switch to 2-regular servos (perhaps even the rudder) even though the Rudder servo is of better quality,,, IT will help balance things out....

Quality mini servos should work really well...problem is, there aren't a lot of quality choices that I found. I used standard-sized servos because I had some new, leftover servos, and, as you correctly point out, the weight is needed in the aft-end of the plane, so why not use a proven servo of your choice, then add less weight (if any) to the back of the plane.

quote:

I plan to really wrining out this plane.....

I wanna see some video.

quote:

of mind is priceless!!

Justin

< Message edited by kolarshooter -- 5/18/2008 4:58:06 PM >

_____________________________

JR 9303; DX-7; 34% CA Extra 300L/DA100; H-9 33% Edge 540/DA100; EF Edge Profile/S-72; Reactor/S-91; Foamies

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Post #: 886

RE: Great Planes Reactor GP/EP 3D ARF .4... - 5/18/2008 5:57:17 PM

Zippi

Posts: 3092
Joined: 6/29/2004
From: Evansville, IN, USA
Status: offline

I used Hitec HS-635 standard servos and 4-40 control rods all around. I also sealed the control surfaces. Even with the standard servos I have the battery pack at the rear part of the cockpit and depending on how it flys on a less windy day I may have to move it further back.

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"It Ain''''t Lookin Good"
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Post #: 887