time to upgrade

[vicssc]

Hi all,

First off I just want to say what a great website! Tons of info. and lots of help. I'm fairly new to flying (6 months) and didn't know I couldn't fly WOT with floats on. Got by 20-30 times so it's time for an electrical upgrade. Thinking of going with what gagallagher suggested for motor ESC prop and such. I am assuming he used a "power up" 450 sport motor. Would it be better to use a emax 30 amp or hurc 40 amp esc? Can I use stock servos (I just have the two)? If I can't, any suggestions on those? Also what receiver should I use? I am getting my parts from Headsuprc. Also, can I use my stock transmitter? I have a Spektrum DX4e. Any and all suggestions welcome.

[gagallagher04401]

I felt my ears burning ;D

30A ESC is plenty, 40 would work but no need to spend the extra money on it, if you have it to burn go for it.
You are correct on the motor.
I also used the aluminum mount they make, looks good, make life easy, and is strong and lite.
I mounted my ESC in the cowl zipped tied to the motor mount for the extra weight need after removed all the heavey brushed electronics.

450 Sport (includes 4mm prop adapter) = 20.00
32A Power Up ESC (I used a spare E-flite 30A I had) = 22.00
GWS 1060 prop = 3.25 for (2) (already had, that is the prop I used on stock cub with lipo's)
(2) TP SG90 Servo (typical 9g micro servo) = 4.00 a piece
Supercub motor mount they sell = 20.00
Total = $73.25 + 2.00 shipping
Had everything within 5 days

I did have to buy a Rx, Ar600 = 50.00

I use 3S lipos from 1550-2200mah 20-25C (Already had)

Then sell the old crap on Ebay or what ever, I upgraded for virtually nothing.

Since I have done this I enojoy the cub much more, I also flying mostly on floats so this setup works great for it. Check out my vids on youtube to see it fly. my name on Youtube is
gagallagher04401.

[gagallagher04401]

If interested, or need be I can watt meter my setup and I will pass the results along. Been a while since I did the mods so I do not remember the watt metering results.

[vicssc]

thanks for the reply! I know your getting tierd of the same ??But when you say Rx I'm assuming the whole transmitter. I had a old transmitter for a rc car and the ''Rx'' was a small interchangeable micro chip that plugged into the back of the transmiter .And how about the receiver? I know I know but I'm new and I'm just trying to get it right.

[gagallagher04401]

LOL it is fine, no question is a dumb one, it is how you learn.

Rx = receiver
Tx = transmitter (Radio)

The thing you pull in and out to change your frequency is called a "Frequency chip" The one in the radio (Tx) will match the one in the Receiver (Rx) these are found in FM and AM Radios and receivers.

I use a Spektrum Dx7 2.4ghz, I already had the radio when I did this conversion, I just needed to buy another receiver (Rx) to put in the plane.

You can use you DX4e, you would just need a compatible Rx (receiver)

Hope this helps

George

[vicssc]

Well.....You were right! dug out old car transmitter and wammo! big Tx on chip! Now I really feel like a "ding- ding"!! What's your opinion on Orange Rx?Seem to be a little cheaper. Also is any way to tell if they are brushless compatible at a glance.I only need 4chal.

[vicssc]

Opps I think I made a mistake asking if the Rx was brushless -to make any Rx brushless you just need the esc; right? I hope I'm not confusing anyone. Do you have a favorite brand batt?thanks a ton.

Vic

[gagallagher04401]

Not a problem.

Rx and Tx (Radio, and receiver) just talk back and forth to each other. Has nothing to with being brushed or brushless.
Brushed or brushless has to do with the type of motor you have. A Brushed motor has brushes in it, hense the name brushed motor. Brushless does not have brushes, hense the name. Brushless is much more efficient then a brushed. I can go into much more detail, but I do not believe it is needed for what you are looking for.

Depending if you go with a brushed motor,or brushless, you need a ESC (Electronic Speed Controller) that will work with the type of motor you have, brushed or brushless.

I have no experience with the orange Rx's. I fly alot of giant scale gasoline, and do not take the chance with stuff like that, I would throw one in a cub though, that would not bother me.

Hope this continues to help.

George

[akdodger]

George (gagallagher04401),

If I upgrade to brushless using your recipe, will I still be able to fly with my 1300 stock lipos and my rhino 1350 30C lipos? I too like to fly off of floats but I also fly with wheels on and I like the floaty feeling of a cub that weighs close to stock. Can I fly both floats and wheels with your setup? Apologies if this is a stupid question but Im a noob and all Ive flown is my stock sclp. I try to fly scale and I have yet to experience any of the motor trouble others have had associated with the larger prop and floats. Thanks for your info on this subject.

Andy

[gagallagher04401]

Yes you will be able to use the batteries you already have. I use 1550mah 20C up to 2200 25C. No problems at all, and I do not use expensive lipos. I use rhino's or turnigy, or sky lipos, not the best but I take care of them been using them goign on 4 years now. The more mah the more flight time. All depends on throttle management, wind, etc... I average 10min.
As for as floats and wheels, the cub could handle it, but not sure how you would do it, or for what reason.

HAVE FUN!!

[flydiver]

Like a lot of stuff in RC YMMV.
1. Jeff has changed his 450 Sport. I think it used to be a Suppo, it now looks like a Senzhen. This may well have different specs than Georges. It still is a fine choice.

2. This is what it will do on a GWS 10x6:
[GWS EP 1060: 37 oz thrust @ 19.5 amps with a pitch speed of 50 mph. Excellent match for this motor, but be sure to have good airflow around the motor if you run a lot of wide open throttle.]
www.headsuprc.com/servlet/the-1528/2800%2C-28mm/Detail

3. The STOCK battery is actually barely able to keep up with the STOCK 9x6 prop and sufferer from the draw of the 10x8. If you hammer it a lot unlike the stock setup the brushless motor will survive but the battery will have a short life. It will be OK for WOT take off and then back off for cruising. Hot rodding.....no.
The Rhino has a higher C-rating and is likely to be a much better battery.

You should like a conservative flyer so you should be OK.

This is how it works:
Capacity x C-rating = amp draw (less 20% for marketing BS; good policy to never believe Max output specs unless you like buying lipos)

1.3 x 15 = 19.5A x .80 = 15.6A

The stock setup draws ~ 10-12A. The float setup draws ~19A on the stock motor and 10x8.

Rhino: 1.350 x 30 = 40A x .80 = 32A; as you can see, that's a whole lot different.

[noose76]

I'm interested in upgrading to a brushless motor from the stock brushed motor. What is the biggest and best motor I can use. Also need to know about mount, esc, prop and any other items I may need and where to get. I have a 2250kv brushless from a 70mm jet and the 30a esc throttle control for it. Can I use this? Thx for any help

[noose76]

Also How far does the stock transmitter work. My buddy has the old fm one in his cub and it transmits twice as far as mine. (yes I had new batteries in it)? I know the old one is like 3000+feet what is the new 2.4ghz range thanks

[gagallagher04401]

The setup of mine mentioned above is quite nice, and inexpensive. If you go to big, etc... you have a motor with some foam mounted to it. It is no longer a cub.
No idea about the radio range issue, but I have the orginal cub, and the stock transmitter would go as far as I could see.

[flydiver]

Range is not TX based, it's RX-based for the most part. The exception to that being the short range 'toy' type TX like for the micros.

Spektrum RX have a very short antenna and it can be shadowed by motor/battery or other impenetrable components. That's why the higher end ones have an additional antenna module.

A 2250kv motor is designed for VERY small props and is not appropriate for anything but a jet. There are LOTS of motor suggestions in the forum.
30A ESC will likely work with most suitable motors for the Cub unless it has a low amp BEC and you load it up with servos (do a search on [brown out] if you use Spektrum.