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Rebel Hot by Comp Arf

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Old 10-18-2019, 11:07 AM
  #151  
scaryxxl
 
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How about mc Gregor servos? They are good quality for the hot? I've never hear about them...
savox are sold out around here .
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Old 10-18-2019, 12:50 PM
  #152  
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Originally Posted by scaryxxl View Post
How about mc Gregor servos? They are good quality for the hot? I've never hear about them...
savox are sold out around here .
sticking with servos that I know are ok with unregulated 2s lipos on a spektrum powersafe receiver. I have zero firsthand or second hand experience with McGregor servos.

Last edited by bodywerks; 10-18-2019 at 01:06 PM.
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Old 10-20-2019, 01:15 PM
  #153  
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I haven't found much information on control throws and expo for low/mid/high rates. Any recommendations from those who have been flying? The information in the instructions is minimal:
Control throws as a starting point:
  • Aileron 20 mm up/down
  • Elevator 15 mm up/down
  • Rudder 40 mm up/down
  • Flaps 25 mm for Take Off, max deflection for Landing
  • Elevator to Flap mix: Elevator proportional 3mm down at full Flap deflection
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Old 10-21-2019, 07:07 AM
  #154  
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Expo is to your taste. I typically run a lot of throw on ailerons with very little expo, like 35%. I still plan to start with what is recommended for starters, about 30% expo on rudder(I'll set my gear switch to give me 85% when gear is down to soften up the roll out), 40 on elevator, and might give a few mm of crow on ailerons for good measure. 90% certain I'll be at 25-28mm on aileron and an extra 5mm on rudder.
I typically don't run dual rates, but do tend to set up expo with my flight modes - more for flying and less for half flap, even less for landing(except rudder, as described previously).

Last edited by bodywerks; 10-21-2019 at 07:09 AM.
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Old 10-21-2019, 11:10 PM
  #155  
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I did measure a friends Rebel HOT settings some time ago. I documented it on our Danish Jetforum, maybe it is of some use (I tried to use mixed Danish/English language for the settings, hope it is understandable )
JetDanmark: Forums / Tips & Tricks / Pirotti Rebel Hot indstillinger
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Old 10-24-2019, 06:01 PM
  #156  
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Nice, Thanks Carsten. I've included your information here:

Deflections /
Elevator: "nose up" / "rudder": 12 mm
Elevator: "nose down" / "deep groove": 9 mm
(Elevator has a slight "nose up" / "height" in neutral, maybe 1 mm)

Aileron (differential): Up 9 mm / down 6 mm
Rudder: max deflection

Flaps, take off: 23 mm
Flaps, landing: 68 mm
- --- Crow @ landing flaps: 8 mm
---- Elevator @ landing flaps ("nose down" / "dykror") 4 mm

CG at 187 mm (from front leading edge) gear down, 25% fuel
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Old 10-24-2019, 07:49 PM
  #157  
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I was quite taken with the little Rebel as flown by the CARF gang at BITW, and pictured here by Airforce7. It looks like any CARF Rebel in the air but it is just adorable on the ramp. It was flown fast and flies like it's on rails with a K45. Like it's big brothers at speed. The CARF pilots kept it moving so it had a lot of momentum for "big sky" aerobatics. Which is a bit of an exaggeration since it is so small that a 400' loop looks huge No doubt many will put ridiculously large turbines in it, it's a CARF sport jet so it won't come apart, but it's a bit like putting a 180 in an Ultraflash and going hill climbing WOT! No problem if you can see it. Not good if you can't. Even with the small K45 turbine it didn't really look like a good short field jet IMHO. But since it's turbine powered it'll have brakes to solve that problem. I'd love to see an ultralight version of this fly, if it is possible to do lighter than the CARF factory setup.
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Old 10-25-2019, 03:18 AM
  #158  
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I'm putting a CRX85 in mine(SW80B tuned up by Andy at CRX turbines). It's only 2.5 ounces heavier than the K45. I plan to be minimalistic on equipment, with dual 1300mah 2s lipos, no gyro, no switches, no regulators. ECU battery is currently a 3000mah 3s lipo but will go with a 2200-2500 if I can get it to CG. They advertise a 6.7kg fully fueled take-off weight, so I'm hoping for about 15lbs wet. That's almost 5 lbs lighter than my first jet, an HSD Viper, which has about the same wing area and flies fine, albeit underpowered with an SW60b. It does seem to fly fine with a 45, but man it should really SCOOT with an 85!

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Old 10-25-2019, 06:30 AM
  #159  
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CARF recommends a 45 and says it is “almost overpowered” with a 60-70 so yes with an 85 it will “scoot”. I just can’t get my head around that LOL. Let us know how it goes.
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Old 10-25-2019, 06:57 AM
  #160  
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I won't be the first. I posted videos of an average flyer running one with an 85., and the are several out there with 70s. Imo, if it ain't 1:1 on take off its severely underpowered for my flying style.
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Old 10-25-2019, 10:53 AM
  #161  
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I think a x45 or k45g3 could be 450g lighter than the Carf 45g2 setup. Still waiting on Bobs weight, he had it on the scales to balance so must have a rough idea by now?

Interesting comment about it not looking like a short field jet, does it not behave when slowed down?

Last edited by raydar; 10-25-2019 at 11:00 AM.
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Old 10-25-2019, 11:14 AM
  #162  
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Raydar
I recon you could shave more than 450g off the total weight if you moved the uat to the front of the fuel tank apposed to in front of the turbine
meaning you could use smaller battery’s up front
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Old 10-25-2019, 11:16 AM
  #163  
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He was obviously watching the CARF ‘kids’ land it, they landed the Jokers fast at JP, maybe too used to the Mephisto...where you can walk backwards faster than it lands!
It will land slow for sure.
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Old 10-30-2019, 01:32 AM
  #164  
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Hi there can someone explain how do you fit the wing into the fuselaje?
one picture will be fantastic.
thanks
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Old 10-30-2019, 01:42 AM
  #165  
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Fit the Wing Tube through the Fuselage, slide both wing panels on to the Tube, there is a Blind Nut secured in to the Wing Root of each Wing Panel.
From inside the Fuselage insert the provided Bolt through in to the Wing Root Blind Nut, do the same each side, job done.

Alistair Powers

Last edited by JP-1; 10-30-2019 at 05:24 AM.
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Old 10-30-2019, 05:42 PM
  #166  
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Nice and simple. I think I might try to do this to my predator. Not a fan of the clamp method.

Last edited by bodywerks; 10-31-2019 at 03:56 PM.
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Old 10-31-2019, 03:57 PM
  #167  
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I was informed that the next container is due to show up within the week. Hopefully this tread takes off!
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Old 11-01-2019, 11:17 AM
  #168  
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Just got the call from Ray. Jets are here! I'm still short two servos. Rudder is getting a jr3911. Steering is getting a Savox 1250. Then I have two more 1250s that will likely go to flaps since I'll only use them at lower speeds. I currently only have two 1260s and thinking they will go on ailerons. Can't find 1260s in stock anywhere, so do you think 1250 will be enough for elevator, or commit to two more 3911s($$$)?
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Old 11-01-2019, 11:33 AM
  #169  
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The 1250's are fine all the way around, Put your 1260's in the flap positions.
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Old 11-01-2019, 01:26 PM
  #170  
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Makes sense. Is yours done yet? Got a take off weight?
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Old 11-05-2019, 12:41 PM
  #171  
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Originally Posted by JP-1 View Post








Fit the Wing Tube through the Fuselage, slide both wing panels on to the Tube, there is a Blind Nut secured in to the Wing Root of each Wing Panel.
From inside the Fuselage insert the provided Bolt through in to the Wing Root Blind Nut, do the same each side, job done.

Alistair Powers
can you tell me if those blue servo mounts pictured come with the kit? If not, where to buy or link to file?
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Old 11-05-2019, 12:51 PM
  #172  
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They are the plywood supplied by CARF, he just painted them!
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Old 11-05-2019, 03:21 PM
  #173  
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So long as they supply them! Looking to have this thing flying within 10 days of receipt, so I want top make sure I have everything.
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Old 11-05-2019, 03:28 PM
  #174  
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10 days, you should be able to do it in 10 hours!
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Old 11-05-2019, 03:42 PM
  #175  
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I work those 10 days straight, and night shift to boot, so a bit more of a struggle. But I think it can b done...
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