Reaction 54 Jet Kit
04-08-2017, 09:08 AM
#3626
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Well looks ok with Tamyia Spray paint Luft light Blue, Luft Grey Green and Luft Grey Violet then used Cali-Graphics - FW-190 decals 1/5 scale - Had to cut the Iron-Cross for fuse-sides in 1/2 to get them to fit the Reaction ended up with 4 parts pulled together using masking tape to hold them in place while being applied to the fuse. Worked great!
Used Robart Electric Retracts BVM wheels and air-brakes
Used Robart Electric Retracts BVM wheels and air-brakes
Last edited by Ken Park; 04-08-2017 at 09:15 AM.
04-09-2017, 03:31 AM
#3634
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I have a JC Falcon... and it's a big engine. I'm not sure you will have room between the wing and fuse to even squeeze that one in. I think the 80 may fit with a little work. But as Bruce said... the 60 sized mount won't fit either.
04-12-2017, 12:31 PM
#3637
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Hi Bruce
Yes I'll need a new mount to fit the Jet Munt 80 - I'll stick the old mount into the mail back to you ASAP I got your address off your
web site.
Yes I'll need a new mount to fit the Jet Munt 80 - I'll stick the old mount into the mail back to you ASAP I got your address off your
web site.
05-03-2017, 11:13 PM
#3640
I am studying the idea of replacing the flaps by speed brakes on the extrados of both wings. I have a set of multiplex speebrakes laying in the workshop for years (my glider era). A good positioning should be against the main spar et the position of the MAC. To place them I will have reduce the tickness of the top main spar about 1mm, all the length of the speebrake put one servo IN each wing panel ( one at center position could have done the job but I feel it's not a good idea to cut in the place were the two wings are glued together)
I made the stock wing subassemblies, but before gluing the ribs I have to decide if I'll do that modification or not.....
I have to say that I strongly hesitate to modify a design who has proven to be good.
The engine will be a jetcat P60SE with kero start option, didn't feel the need of overpowering that bird
I made the stock wing subassemblies, but before gluing the ribs I have to decide if I'll do that modification or not.....
I have to say that I strongly hesitate to modify a design who has proven to be good.
The engine will be a jetcat P60SE with kero start option, didn't feel the need of overpowering that bird
Last edited by SALMONBUG; 05-03-2017 at 11:52 PM.
05-04-2017, 03:41 AM
#3641
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I am studying the idea of replacing the flaps by speed brakes on the extrados of both wings. I have a set of multiplex speebrakes laying in the workshop for years (my glider era). A good positioning should be against the main spar et the position of the MAC. To place them I will have reduce the tickness of the top main spar about 1mm, all the length of the speebrake put one servo IN each wing panel ( one at center position could have done the job but I feel it's not a good idea to cut in the place were the two wings are glued together)
I made the stock wing subassemblies, but before gluing the ribs I have to decide if I'll do that modification or not.....
I have to say that I strongly hesitate to modify a design who has proven to be good.
The engine will be a jetcat P60SE with kero start option, didn't feel the need of overpowering that bird
I made the stock wing subassemblies, but before gluing the ribs I have to decide if I'll do that modification or not.....
I have to say that I strongly hesitate to modify a design who has proven to be good.
The engine will be a jetcat P60SE with kero start option, didn't feel the need of overpowering that bird
05-04-2017, 04:05 AM
#3642
Hello joeflyer
My reason to think speed brakes could be fine, is mainly because this plane doesn't need any extra lift.
I know that the gain in lift is compared to the drag increase is interesting in the first degrees of flaps extension and that flaps give a big drag when extended at high angles ( 60 degrees is a huge angle).
This certainly work fine with the flaps.
Be certain I don't denigrate the design of the plane, it's certainly a great performer
My idea of the speed brake was simply to kill the lift because I considered there was no need to increase clmax to slow down.
Sorry for my poor english, I have difficulties to explain my considerations.
My reason to think speed brakes could be fine, is mainly because this plane doesn't need any extra lift.
I know that the gain in lift is compared to the drag increase is interesting in the first degrees of flaps extension and that flaps give a big drag when extended at high angles ( 60 degrees is a huge angle).
This certainly work fine with the flaps.
Be certain I don't denigrate the design of the plane, it's certainly a great performer
My idea of the speed brake was simply to kill the lift because I considered there was no need to increase clmax to slow down.
Sorry for my poor english, I have difficulties to explain my considerations.
Last edited by SALMONBUG; 05-04-2017 at 04:15 AM.
05-04-2017, 04:38 AM
#3643
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Salmonbug,
You can program crow or "butterfly" to the standard ailerons to kill lift on landings. There's some discussion on the designer's website on using crow for landings-no need to modify the wings, just program the transmitter,
Rgds,
Art ARRO
You can program crow or "butterfly" to the standard ailerons to kill lift on landings. There's some discussion on the designer's website on using crow for landings-no need to modify the wings, just program the transmitter,
Rgds,
Art ARRO
05-04-2017, 04:40 AM
#3644
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Salmonbug,
Your English is fine. You are correct, with those huge wings the plane has plenty of lift. I use 50-60 degrees of flap, and usually end up gliding it in for landing with the engine at idle. Your idea for speed brakes would help. I was just questioning whether or not it's worth the extra work. Another approach is to use crow (ailerons up when flaps are down) to slow the plane down. I have not tried crow since I am comfortable bring mine in slow for landings.
Joe
Your English is fine. You are correct, with those huge wings the plane has plenty of lift. I use 50-60 degrees of flap, and usually end up gliding it in for landing with the engine at idle. Your idea for speed brakes would help. I was just questioning whether or not it's worth the extra work. Another approach is to use crow (ailerons up when flaps are down) to slow the plane down. I have not tried crow since I am comfortable bring mine in slow for landings.
Joe
05-04-2017, 04:45 AM
#3645
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I am studying the idea of replacing the flaps by speed brakes on the extrados of both wings. I have a set of multiplex speebrakes laying in the workshop for years (my glider era). A good positioning should be against the main spar et the position of the MAC. To place them I will have reduce the tickness of the top main spar about 1mm, all the length of the speebrake put one servo IN each wing panel ( one at center position could have done the job but I feel it's not a good idea to cut in the place were the two wings are glued together)
I made the stock wing subassemblies, but before gluing the ribs I have to decide if I'll do that modification or not.....
I have to say that I strongly hesitate to modify a design who has proven to be good.
The engine will be a jetcat P60SE with kero start option, didn't feel the need of overpowering that bird
I made the stock wing subassemblies, but before gluing the ribs I have to decide if I'll do that modification or not.....
I have to say that I strongly hesitate to modify a design who has proven to be good.
The engine will be a jetcat P60SE with kero start option, didn't feel the need of overpowering that bird
That's an interesting idea. Not sure you need extra braking with a P-60 but if you go to a bigger engine those brakes may come in handy. I had a P-60 in mine for a few years and then went to a Rabbit and the higher residual thrust at idle has an effect on a plane like this with light wing loading.
05-04-2017, 05:01 AM
#3646
That's an interesting idea. Not sure you need extra braking with a P-60 but if you go to a bigger engine those brakes may come in handy. I had a P-60 in mine for a few years and then went to a Rabbit and the higher residual thrust at idle has an effect on a plane like this with light wing loading.
So my idea was to replace flaps by speebrakes because I think the plane doesn't need the extra lift, it need drag (or less lift) for landing...
Last edited by SALMONBUG; 05-04-2017 at 05:14 AM.
07-07-2017, 06:27 AM
#3649
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On full scale aircraft flaps are used to lower the minimum speed that an aircraft can fly at (https://en.m.wikipedia.org/wiki/Flap_(aeronautics)). What you stated was a mistake that many of us made at pilot school. This made our detachment commander, LtC Steve Rogers (not Captain America) crazy and he had to pound the notion out of us. Drag is just a by product of that operation...and more power is needed to offset the drag.
When flying the Reaction 54 it is tempting to think about slowing the plane with flaps but we really are adjusting the wing surface for slow flight and landing.
Speed brakes would look cool though, but not really necessary.
When flying the Reaction 54 it is tempting to think about slowing the plane with flaps but we really are adjusting the wing surface for slow flight and landing.
Speed brakes would look cool though, but not really necessary.
07-07-2017, 07:01 AM
#3650
With 60* flap deflection (as recommended by Bruce) only drag is created, no additional lift. The wing has plenty of "lift" even at slow speed, thus the NEED for DRAG to land with the high residual thrust our model turbines have. In fact "CROW" destroys some of it while adding washout to help tip stall.
Over and out....
Dave Rigotti
Over and out....
Dave Rigotti