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Apr 14, 2017, 07:57 PM
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Ft009 brushed upgrade

Hi guys i thought i would share another build with you, i will try and get the videos done soon.
Ive really enjoyed building ft009/11/12s and i wanted to build something that was;
1) As always as cheap as possible to do,
2) Easy to do.
3) Brushed
4) Fast enough and could cope with most conditions. (The brushless mod I did before didn't cope to well with choppy/rough conditions).

There is not a whole lot of stuff on the brushed approach but tones on the brushless upgrades, so hears my build thread.

I had some parts sitting around so i used.

fs racing brushed 320a speed controller.
fs racing 21t, 550 brushed motor. (i would choose a 21-23t, 540 capable of running 3s).
ft012 motor coupling (1 part)
zop 1800mah 3s 11.1v 45c battery. (modified battery tray to hold).
flysky compatible transmitter and receiver.
FT009 prop
40mm p1.4 4.8mm bore . With ft009 prop core.
I would recommend the tfl cnc 34mm p1.4 from if you were going to stay with either the stock motor or another 540. You would have to drill it out to aprox 4.8mm or change the prop shaft. It didn't work well with the brushless setup.
Another good suggestion if you stay with the 550 motor is a octura y535 or nylon octura y534 prop and the 35mm p1.7 from hobby king if you think you system can cope, but you need to run the ft012 prop shaft if you use a metal prop.

I used a heat gun to remove the core with the thread in from the original prop, i just applied a bit of heat i didn't have to melt it and it did separate easily from the plastic. I used a file to square the centre off to fit the gap where the dog drive would fit. To put it in the new prop was easy enough i managed to push it in by hand it was secure enough not to glue as i wanted to be able to use it in other props. To be honest the boat would run better with a 38mm metel prop, the stock motor as far as im aware can cope with 3s as its a 27t motor. Feel free to correct me about that. if you use the stock motor you wouldn't have to change the coupling also the added advantages would be less weight and less torque roll. To be honest i have enjoyed the brushed upgrade over building and running the brushless version and it can be cheaper to do......

I didnt end up using the origanal battery as it was guttless in this. I also was going to use the watercooled heat sink for the battery but had no need. I also found that it helped to offset the speed controller to the left to help resist torque roll and to help self righting. I will try and pop a picture of the 3s battery fitted as well as the running video ect.
Hope this helps, enjoy....

Update; heres a running video but it was running low on juice as i had been having some flat out fun


FT009 MODIFIED BRUSHED 550 21T 3S DADTECH&RC (0 min 31 sec)

I ordered a 540 21t surpass 540 open bell and looked at different ways of fitting props. Here are the options.

1) i have now fitted a ft012 shaft which i shortened then filled flats on so i could use a solid coupling 3mm-3.17mm the same as the ft009 brushless build thread.

2) I started with the ft009 prop shaft and used the core out of a ft009 propeller then it can be modded as per pics to fit a 4.8mm (ish) bore prop but this limits the size of prop you can use and it is difficult to fit a metal prop.

3) I used a ft009 prop shaft with a dog drive (oarlock) from a wltoys wl912 which screws on which allows fitment of various nylon props.
the hub of the tfl cnc prop i have was to long to fit unless you trim the ends a little.
This was my favourite solution as it involved the least amount of mods to fit a variety of props.

There are other places to buy these parts.
I tried a 32mm p1.4 cnc tfl on the boat running the 550 motor and with the weight of the larger battery it wouldn't get up and plane but when given a helping hand with a flying launch it went well. It was faster than on a 40mm. so i am going to try the same prop on the 540 and see if it works, if not i will get a 34/35mm metal prop with maybe a bit more pitch.

Current set up mods;

Surpass 540 21t motor. (would recommend the 23t for everyday running).
Ft012 prop-shaft and dog drive.
tfl 32mm cnc prop. It does take abit to get up and plane so if you run a higher turn motor e.g 23t you could run a 34mm tfl or an octura y535 or nylon y534 as a cheaper option. I will upload a video as soon as i can.
Its a pleasure no matter the conditions and is very fast and a lot less twitchy than the brushless set up.

I have just purchased a 32mm 1.6p from Hobbyking. It has no tongue so I'm anticipating a few issues. I'm probably going to have to shed some weight and move it around to ease getting up on plane. Will post a video when the weather clears up.

FT009 MODIFIED BRUSHED 21T 540 3S 32MM PROP DADTECH&RC (1 min 49 sec)

FT009 MODIFIED BRUSHED 21T 540 3S 32MM PROP DADTECH&RC calm run (1 min 45 sec)
Last edited by Dadtech; Dec 25, 2017 at 06:25 PM.
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May 07, 2017, 05:54 AM
Registered User
Video posted
May 07, 2017, 11:04 AM
Closed Account
I see you used the 34mm blue prop. I found it to have a bigger bite than octura 435 and I smooth out the hub area which increases some the r[m. Not a back cut but close. How I found out was, I have a No Step1 that was with a 632 and moved. I changed to a blue 34mm and smooth the hub area and found I had a kittle more trigger left and wot it and the increase was very noticeable, Not a vendor, just an old timer farten around, never went back to 632. I did this with all my boats. The no step is on 2S with a Fiego motor of old..
May 07, 2017, 11:11 AM
Registered User
It's on a 40mm 1.4p but when I get a chance il order a 38mm brass prop. Just needs a little more bite. I was going to go for a 632 on my modded scratch built ft009 if I use a lower kv motor.
May 07, 2017, 03:22 PM
Closed Account
Y0u could go to a 535 or switch to a carbon fiber 636 at OSE. Just a suggestion! Watch the heat!
May 07, 2017, 06:08 PM
Registered User
Originally Posted by Dennis Manning
Y0u could go to a 535 or switch to a carbon fiber 636 at OSE. Just a suggestion! Watch the heat!
It seems that the 40mm is about as big as you want to go heat wise ect. prop choice comes down to price.
this was what i was looking at getting. would need balancing ect

With 38mm when the ambient temp went up (summer) it was getting hot on a hard run.
Last edited by Dadtech; Jul 28, 2017 at 09:52 AM.
May 07, 2017, 06:54 PM
Closed Account
Ok, i'll await the news on your system! Sorry if I butted in, my bad habit! Best of luck!
May 08, 2017, 05:33 AM
Registered User
No don't be silly your not butting in. All constructive input is always welcome. It's all ways good to know what everyone's feedback is with things. Sharing knowledge and chatting and enjoying the hobby ect is what I feel it's all about.
May 08, 2017, 11:09 AM
Just Plane Nutts
AirDOGGe's Avatar
Looks like you got some good speed on it.

You don't think a 40mm prop will have much torque/roll influence on the hull? That's a big prop for a lightweight 17" boat.
May 08, 2017, 06:56 PM
Registered User
You got it in one. With the 550 compared to a 540 in the ft009 you get a lot of roll especially with the 40mm prop. The suggestion of using a decent 638 would be a good but failing that a cheap well preped metal 438.
There's a guy on YouTube running a 550 Titan with a 42mm prop!! There's no real benafits of running a 40 over a 38 on one of these It seams.
May 08, 2017, 07:05 PM
Registered User
I'm going to blame you AirDOGGe for your help with the other threads. It was your modded ft012 video that got me hooked. I watched it again the other day. I'm going to have to do a modded ft012
May 09, 2017, 11:22 AM
Just Plane Nutts
AirDOGGe's Avatar
Guilty as charged, and I throw myself on the mercy of the court... or forum?

Last edited by AirDOGGe; May 09, 2017 at 11:35 AM.
May 09, 2017, 04:52 PM
Registered User
It's allways good to share enthusiasm were posible.
May 16, 2017, 01:06 PM
Registered User
I've got my prop ordered. Will update when it arrives
May 23, 2017, 11:11 AM
Registered User
hello! I have a question. dadtech said ''I would recommend the tfl cnc 34mm p1.4 from if you were going to stay with either the stock motor or another 540. You would have to drill it out to aprox 4.8mm. ''

now I have been looking and I found this one

this one is 4mm bigger but it has got a 4.76mm hole. because I can't drill isn't this a better solution for me? I have got a stock motor and everything else is stock yet, maybe in the future I will buy a better moter.

sry for bad english

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