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JP hobby elec brake question

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JP hobby elec brake question

Old 05-31-2022, 12:08 PM
  #26  
Vincent
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Originally Posted by Viper1GJ
I started out with the Xicoy LGC-15 on 2S. Since the JP retracts can only use 2S the brake power is also limited to 2S from the LGC-15. I switched to the AG-63 to allow brakes to use 3S power. For a while it worked excellent. Perfect straight steering and braking. But then the brake outputs on the AG-63 stopped working. The steering still worked. So I went back to the JP brake controller that is now toast. I've been told that the heavier jets need 3S to get the stopping power from the JP brakes. That is why I switched away from the LGC-15.

Vincent, did the SM air brakes fit on the JP gear with out a lot of fuss or machining? Where did you get the SM 1/6 F-16 brakes?
Gary
Nothing major but i had to make up a new 8mm axle and drill / tap both ends for bolts to secure. Also the SM axles were 7mm so i had to replace those wheel bearings with 8mm type. I found a used set of wheels and brakes a few months ago on rc groups and bought them. I figured eventually i would be using them as the JP set would just not cooperate.

Last edited by Vincent; 05-31-2022 at 12:13 PM.
Old 06-01-2022, 04:01 AM
  #27  
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Originally Posted by Vincent
Nothing major but i had to make up a new 8mm axle and drill / tap both ends for bolts to secure. Also the SM axles were 7mm so i had to replace those wheel bearings with 8mm type. I found a used set of wheels and brakes a few months ago on rc groups and bought them. I figured eventually i would be using them as the JP set would just not cooperate.
Sounds like a little bit of work getting and fitting the air brakes. I'll probably try going back to the AG63 and see if it will work better again.
Thanks
Old 06-01-2022, 04:18 AM
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Originally Posted by Viper1GJ
Sounds like a little bit of work getting and fitting the air brakes. I'll probably try going back to the AG63 and see if it will work better again.
Thanks
Several of my club members have the same JP brakes on their L39's and use the AG63 gyro. They claim the 63 puts out more voltage to the brakes than the stock JP controller and the brakes engage at higher speeds. Its worth a try if you are not able to do the conversion to air.
Old 06-01-2022, 08:31 AM
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Ag63 vs lgc15? Any experience?
Old 06-01-2022, 10:32 AM
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Originally Posted by Ceeray
Ag63 vs lgc15? Any experience?
Depends on your project. I've used both successfully. For smaller to midsize aircraft (up to approx. 35lbs) the AG63 is fine. For larger aircraft ( above 40lbs) the LGC 15 is the way to go. This is mostly for the ability to set (increase) the resistance amperage for the heavier retracts. This will allow the gear to complete full retraction against the weight and wind resistance (including gear doors) after takeoff.
Old 06-01-2022, 12:01 PM
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Originally Posted by HotelSierra
Depends on your project. I've used both successfully. For smaller to midsize aircraft (up to approx. 35lbs) the AG63 is fine. For larger aircraft ( above 40lbs) the LGC 15 is the way to go. This is mostly for the ability to set (increase) the resistance amperage for the heavier retracts. This will allow the gear to complete full retraction against the weight and wind resistance (including gear doors) after takeoff.
Agree with all the above. The problem I had with LGC-15 was there is no way to have different voltages for retracts and brakes. When JP retract motors are limited to 2S and you need 3S for JP brakes you have to use a different brake controller since LGC-15 is limited to just one voltage input.
Old 05-18-2023, 11:43 AM
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This is the solution, in my opinion. I have a 35lb Xcalibur+ that I converted to JP electric gear, and I have the same problem, no brakes at speed (same bigger wheels with the plates in the rims). This Xicoy controller allows up to 12v (3s) and has the pulse feature which is great. Hard to get though, Dreamworks is out of stock! I had to order direct from Xicoy which costs in shipping. I will let you know if it truly works when I install it soon. Shame that JP does not make their controllers to work properly with the bigger models!


Old 05-18-2023, 04:37 PM
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Originally Posted by MFIGHT43
This is the solution....Hard to get though, Dreamworks is out of stock! I had to order direct from Xicoy which costs in shipping....
I just ordered one from FenderbeanRC (https://www.fb-rc.com/) yesterday. Already shipped. Keith is great to do business with.
Old 05-19-2023, 03:31 AM
  #34  
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I ended up replacing the wheels and brakes on my Top RC F16 which required some heavy duty fiddling. I would have tried this controller. Im interested to see if it works.
Old 05-19-2023, 01:55 PM
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It's ok, works better than most stock controllers that just lock up the brakes, not as good as an AG63 integrated brake gyro.
Old 05-19-2023, 06:01 PM
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how does the 63 compare to the 68?
besides the integrated gear controller part.
and cost
Old 06-01-2023, 03:54 AM
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So, I received the Xicoy controller and installed it in my Xcalibur+. I now get 12v to my brakes. The results are better, BUT, when the wheel speed gets above a certain point the brakes still don't work! I think its just a poor design that does not work at speed. It seems it just not possible to get enough voltage to the brakes to overcome the centrifugal force affecting the pads.
Old 06-01-2023, 01:12 PM
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Originally Posted by MFIGHT43
So, I received the Xicoy controller and installed it in my Xcalibur+. I now get 12v to my brakes. The results are better, BUT, when the wheel speed gets above a certain point the brakes still don't work! I think its just a poor design that does not work at speed. It seems it just not possible to get enough voltage to the brakes to overcome the centrifugal force affecting the pads.
Well said and all true. Swap them out for another brand or some air operated type.
Old 06-01-2023, 02:35 PM
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Originally Posted by MFIGHT43
So, I received the Xicoy controller and installed it in my Xcalibur+. I now get 12v to my brakes. The results are better, BUT, when the wheel speed gets above a certain point the brakes still don't work! I think its just a poor design that does not work at speed. It seems it just not possible to get enough voltage to the brakes to overcome the centrifugal force affecting the pads.
I had the same problem with the JP brakes on my F-16XL with 3 different controllers and 2S and 3S batteries. Now I fly it on grass only where I don't need the brakes.
Old 06-01-2023, 10:37 PM
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Im thinking about putting some material behind those metal pieces to keep them constantly rubbing the brakes and that way minimizing the gap between magnet. Maybe it will hold a little bit better that way.. totally useless desing as it is now.
Old 06-02-2023, 03:49 AM
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Originally Posted by Ceeray
Im thinking about putting some material behind those metal pieces to keep them constantly rubbing the brakes and that way minimizing the gap between magnet. Maybe it will hold a little bit better that way.. totally useless desing as it is now.
Probably a waste of time. The brake is a poor design. I have a like new set in my junk box lol. After many off road landings I found a nice set of used skymaster air F16 wheels and brakes that solved the problem.
Old 06-02-2023, 01:59 PM
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one layer of filament type strapping tape might just do the trick.

let us know what you find out.
Old 06-16-2023, 08:16 PM
  #43  
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is this the version that doesn't work? I put a 3s lipo directly to the brake no radio or controller (momentarily). With no wheel I can still turn that metal plate by hand. With the wheel on I can torn it by hand. It seem some others have the opposite issue where the brakes lock up too easily??

it's like there is not enough friction between the plate and the rubber. I'm trying to figure out what I can do to that plate to give more friction. I tried to ca some sand paper onto it but it made it slicker.

help!
Old 08-21-2023, 10:39 AM
  #44  
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No, see post #8. Different style. However, if you're having trouble with that type that is discouraging.
Old 08-28-2023, 11:59 AM
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Default Final Answer

Final answer..... replace with Electron wheels and brakes. Works perfectly. Those JP brakes are crap.





Last edited by MFIGHT43; 08-28-2023 at 12:05 PM.
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Old 08-28-2023, 12:15 PM
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Did the same thing!!!

MAJOR difference. Electron are way heavier though.

CARF Ultra Flash Evo build thread +
Old 08-31-2023, 03:52 AM
  #47  
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Originally Posted by MFIGHT43
Final answer..... replace with Electron wheels and brakes. Works perfectly. Those JP brakes are crap.
Where did you get those short legs from? I need short legs for a new project but am struggling to find any.
Old 08-31-2023, 05:42 AM
  #48  
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Originally Posted by harrycurzon
Where did you get those short legs from? I need short legs for a new project but am struggling to find any.
So those are from JP Hobby. I ordered direct via Turbines RC. To be fair, the struts and retracts themselves are great, just the brakes don't work.
Old 09-24-2023, 05:45 AM
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So hereís my JP retract and brake controller, Well the brakes have already quit working, I was still setting plane up when they had puff of smoke come out of them ? The retracts still work fine so my question is whatís best options to get brakes working. Xicoy brake controller, or complete xicoy retact and brake controller??
Old 09-24-2023, 06:29 AM
  #50  
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Even though my JP controller is working fine right now, I have a Xicoy LG-15 controller on order. JP's quality is too questionable, especially for the expensive jets arena.

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