KFX450

My Feedback: (30)

Didn’t even know about those. Seem like another good option and price point.

natxo

I think are available from carf... so must not be bad, price is very nice... but you always have that feeling when use a new brand servo (at least for me) in your new toy.


Never heard about those

jvaliensi

My Feedback: (1)

Promodeler servos have a nice build, with features others don't do. The price is fair. I've had some weird experiences with them and will avoid them, but I never has a failure.
The MKS 747 are the best. I found full sized Savox servos to be awesome but I had bad experience with their small servos.
KST servos are awesome too.
I would not try to save weight and costs with the servos.
You can use a 1l tank with the X45 and save much more weight by doing that.

ltc

My Feedback: (3)

I buy all my F3A pattern planes and parts from F3AUnlimited. Mike has had good luck with them and Ive trusted him for years

I always setup new servos on the bench and exercise them monitoring both current and centering before installing them in any plane
Besides it gives me something to do while waiting for the X45 … apparently the worldwide parts shortage has hit Gaspar like everyone else

And that’s not likely to change until the end of 2024

Dave Wilshere

All the Rebel Hot in my club (11) have the MacGregor servos…all the Jokers too so another six models, we have sold 500+
CARF should have stock in Europe

natxo

I know servos are much a personal taste and im sure part of the cost invested is to buy a peace of mind, but i feel better doing that. I like the idea to save some grams but probably servos is not the correct part to save from but i read threads where even graupner 678 where used so im a bit confused to whatever is really need.

Im from Spain, i was lucky to get my x45 december 2021. Plan is to use hab pipe and cmjets small fuel tank

Promodeler servos seems to be only in usa, i never found those in eu.

Macgregor are sold by carf i think..... are tempting

I like kst servos, thats what i normally use in my planes, i think those will be valid also
https://www.f3x.de/kst-x15-1208-v8-1...vo-bis-135-ncm
https://www.f3x.de/kst-ds-589-v8-15-...rvo-bis-92-ncm

natxo

That's good to know, thanks for the info. I also think that carf will not recommend those if were not reliable and your comment enforce that idea.

JP-1

The CARF Rebel Hot was out in force at the JMA meeting at Deenethorpe on Saturday

Alistair Powers

BarracudaHockey

My Feedback: (11)

Yea, I had mine out this weekend as well, love it a little more every day

retiringforgood

I guess I owe everyone an update. Life was a mess for a while with a new job and what not.

I finally maidened it a couple of weeks ago and couldn't be happier with it and really wished I hadn't wasted so much time and money with my other 2 previous turbines (sebart avanti/flexjet pro). The X90 fits it perfect (surprised people settle with just a 45) and I have no issues at all slowing it down to land and the idle thrust isn't even enough to get it rolling (though it doesn't take much of a bump). It flies beautifully, the X90 sounds (and goes) amazing, and I get nothing but compliments every time I take it out to the field. Just about 2 dozen flights in it so far. Also my UAT has given me no issues at all with my "unconventional" mounting style, not much of a bubble even after many extended nose down dives.

This one's a keeper for sure.

noahb

My Feedback: (67)

What are your flight times?

retiringforgood

Throttle timer set to 7 minutes which gets me back on the ground with usually at least 1/4 tank left as reserve. I figure about a total of 2-3 minutes worth of full bore throttle within those 7 minutes.

For grins I flew an entire flight without ever going past 1/2 throttle aside from takeoff and I figure I could almost stretch it to 10 minutes if I really wanted. Tank was about half at the 7 minute mark. This is with the OEM Carf tank

Very pleased with how efficient the X90 is.

noahb

My Feedback: (67)

Thanks for the feedback

natxo

I have a question about the retracts, in my current model I have jp retracts with a 5mm pin, so if you land a bit rough… pin will bend and act like a fuse, so mounts did not broke.

I saw that the jp retracts for the rebel there is no pin, struct goes directly to retract, so what happens if you land a bit hard as there is no pin to act like a fuse? I know answer is, land correct, but bad lands happens. Strut is “easy metal” and will bend or supports will go off

If that happens is not better to use the electron ones that have pin?

thanks!

Bob_B

My Feedback: (11)

Well if you land harder than what the trailing link design can handle something is going to give, the same is true of any retract system where the strut goes directly into the retract unit.
If you land hard enough to bend the retract or pull the unit out or push it through the wing I call that a Crash!

Dave Wilshere

It’s a CARF model…the gear mounts are tough. Don’t worry
I witnessed a bounced landing that sheared the wing tube…but the gear mounts and legs were untouched!

natxo

Yep, sure it can be called a crash

Main question is that if in that situation is better to have a pin retract or one that has direct strut, mine wont arrive until july, was ordered with jp one but what happened today make me think about if is better to change it to electron or mantain jp.

I also didnt know how sturdy retracts mounts are, and they will take “a bounce” and no problem at all. Is that it just make me think, i just touch a bit hard, plane bounce (like a kangaroo) and bent pin.

lesson i learn, do not slow too much if is windy, thats for sure

Thanks!

pd, yep maybe im worried with no reason, very probably

jvaliensi

My Feedback: (1)

Hi,
My JP gear were solid aluminum legs which go into the actuator. The actuator clamps around the legs.
My Electron legs have the pin between the two parts. But I think the pin is hardened steel and will not bend easily. I've broke off a main gear yoke from a set of Electrons and the pin didn't bend. (I ran off the end of the runway into rough ground).
I think you are looking for a fuse. Something minor and replaceable to give 1st. I've read that some folks like to use the wood screws to hold the gear in the wing, thinking the screws will pull out 1st. I thru-drill and bolt my gear in.

Bob_B

My Feedback: (11)

You are worried for No reason.

natxo

yes i think so, i will concentrate into landing correctly, sure the people that built those have that kind of things in mind and will be no problem.

Thanks to all

jvaliensi

My Feedback: (1)

I reconfigured my Rebel Hot from an X45 to an X90. it increased the dry weight approximately 10% and doubled the thrust.
The air plane handles and lands the same. I use 1/2-Expo and found throttle management to be easy.
I think the X90 is a better choice than X45 for the Rebel Hot.

natxo

Sure you can always manage trottle, I think is a personal taste, carf demo plane use a k45…. And i read a response from Andreas Geitz recommending the 45 size for the plane

Anyway is good to have the option to change it to whatever user liked more, i only have a 45 so for me is easy to decide

BarracudaHockey

My Feedback: (11)

I let my buddy fly mine the other day and he commented on the speed and vertical and mine has a SW60 which I really think is probably the perfect balance of power, fuel economy and other factors for this airframe

jvaliensi

My Feedback: (1)

I think this is about more than the ultimate thrust. The X45 and X90 have similar ramp up times from idle to full thrust. So, the X90 gets to 45N quicker than the X45 does. This makes the Rebel Hot feel more responsive.

natxo

Agree, faster response i nice