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Old Apr 22, 2012, 04:23 AM
"Fly, yes... Land, No"
OutcastZeroOne's Avatar
United States, CA, Santa Cruz
Joined May 2005
1,326 Posts
Went to fly again yesterday. New motor mount was great. held solid. Less wind, 5~6mph, gusting up to 10ish. thing took off like a rocket with the 7x5 prop. made a nice big turn to the right and started doing some tight turns. then I got turned around. for a moment I thought my controls where reversed went into a dive and it nosed in, full speed into the ground... Saw the motor bust off and go one way as the body kartwheeled the other.

Great... _

start walking towards the wreakage, then POOF!!!! big cloud of white smoke , did I mention it crashed into grass? Took off running, grabbed it by the tail and ran for the asphalt. waited a good half hour to make sure the battery was done doing its death roll. smoke was done and over with before I even reached the plane. I was more concerend about starting a fire.

So once the pack was done and cool, I dissected the carcus for any usable parts (conector, charge plug) and headed for Radio Shack across the street. Handed them the dead cells for recycling and headed home. What was really interesting, as I was driving past, I swear I saw someone flying a navy blue, Funbat 0_0

Went home, ripped off the remains of the old fuselage, slapped on another one I had made (built for doing instructions on how to assemble my fuse) after giving it a spiffy new "paint job".

So end of the day I lost 1 pack, 1 motor (bearings got punched in) 1 prop, and then tonight damaged 1 speed control (the crashed one) during instalation. But its ready to go back out and crash again right after I add a small fire extinguisher to my field tool kit...
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Old Apr 22, 2012, 12:21 PM
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chris1379's Avatar
United States, OH, Eaton
Joined May 2006
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Quote:
Originally Posted by OutcastZeroOne View Post
Went to fly again yesterday. New motor mount was great. held solid. Less wind, 5~6mph, gusting up to 10ish. thing took off like a rocket with the 7x5 prop. made a nice big turn to the right and started doing some tight turns. then I got turned around. for a moment I thought my controls where reversed went into a dive and it nosed in, full speed into the ground... Saw the motor bust off and go one way as the body kartwheeled the other.

Great... _

start walking towards the wreakage, then POOF!!!! big cloud of white smoke , did I mention it crashed into grass? Took off running, grabbed it by the tail and ran for the asphalt. waited a good half hour to make sure the battery was done doing its death roll. smoke was done and over with before I even reached the plane. I was more concerend about starting a fire.

So once the pack was done and cool, I dissected the carcus for any usable parts (conector, charge plug) and headed for Radio Shack across the street. Handed them the dead cells for recycling and headed home. What was really interesting, as I was driving past, I swear I saw someone flying a navy blue, Funbat 0_0

Went home, ripped off the remains of the old fuselage, slapped on another one I had made (built for doing instructions on how to assemble my fuse) after giving it a spiffy new "paint job".

So end of the day I lost 1 pack, 1 motor (bearings got punched in) 1 prop, and then tonight damaged 1 speed control (the crashed one) during instalation. But its ready to go back out and crash again right after I add a small fire extinguisher to my field tool kit...
Sorry to hear about the crash but made for a very interesting story. Glad it ended well. I had a scare my last time out. I used an older lipo and flew it like the newer ones. On my last trip around I noticed my motor bogging badly and landed . The lipo was swollen and very hot. A little more air time and I could have had a flying fireball falling into a field of tall dry grass. Guess that one is done.

Maybe you should update your profile to let us know where you are. The person with the Navy Funbat might show up here in the thread. The plane you saw could also be a Blue Funder or Sig Wonder.
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Old Apr 22, 2012, 05:12 PM
"Fly, yes... Land, No"
OutcastZeroOne's Avatar
United States, CA, Santa Cruz
Joined May 2005
1,326 Posts
Quote:
Originally Posted by chris1379 View Post
Maybe you should update your profile to let us know where you are. The person with the Navy Funbat might show up here in the thread. The plane you saw could also be a Blue Funder or Sig Wonder.
Ive tried many times to update my location, but it keeps getting reset. I've been told there is an issue with some parts of the site, such as that.

Went out and tried flying again today after seeing "Hunger Games" with my GF. VERY windy. flags full sail windy. did a few passes as best I could with the wind. did a few GOOD belly landings on the grass and the asphalt (pushed down by the wind). all in all, today was a sucess. No crashes. Plane made it home in as many pieces it left in Motor mount did get knocked loose. My guess is from when it got pushed down and landed on the asphalt.

I only had 6" props as my largest prop, and the 6x5 I had was just enough to get it into the air and fight the wind. But I did have some fun so that worked out

I wasnt able to make the motor mount as sturdy as I wanted to before today. I forgot about cutting the parts I needed till the last second at work, so I only got the outer bulkhead cut, no fingers. Tuesday is my Monday at work (shop is closed Sundays and Mondays) so Ill cut the rest of the parts out then. Though it did pass the "grab it by the motor and shake it in the air to see if it comes loose" test last night
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Old Apr 23, 2012, 02:01 AM
Reap the wild wind
headlessagain's Avatar
Bristol,UK
Joined Feb 2007
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What motor are you using on your rebuilt FB? I remember you posting this HK motor as a possible one http://www.hobbyking.com/hobbyking/s...ner_Motor.html
I'm running one on my larger Swing 3 and it would turn the FB into a rocket ship. You need some high C rated lipo's to feed it though.
Andy
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Old Apr 23, 2012, 03:18 AM
"Fly, yes... Land, No"
OutcastZeroOne's Avatar
United States, CA, Santa Cruz
Joined May 2005
1,326 Posts
Im running this motor:

http://www.rc-book.com/en/node/6246/...00kv-outrunner

I originally had 2 (I got in the habit of ordering motors in pairs so that I have a back up) and now I only have 1. Looking at a few others as a replacement but no final on what to get yet. Mainly waiting for the thigns to come back in stock Will be going by my local hobby shop and picking up a few larger props.
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Old Apr 23, 2012, 03:33 AM
Reap the wild wind
headlessagain's Avatar
Bristol,UK
Joined Feb 2007
3,904 Posts
This one from RC Timer works well on my Funbat http://www.rctimer.com/index.php?gOo...3&productname= on a 3 cell 7x4 set up. My FB is using this one from Target Hobby
http://www.targethobby.com/hb2822-rc...p-4161589.html, also on a 7x4 3 cell set up.
ndy
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Old Apr 23, 2012, 12:26 PM
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United States, OH, Eaton
Joined May 2006
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Anyone using an Emax 2812 or 2822?
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Old Apr 23, 2012, 01:47 PM
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chris a 2822 is what I'll be using on mine, but I've got a question regarding the mounting of it.

This will be my first scratchbuild and so I'm confused how to mount my plywood and do I need side pieces that interlock into the front section? How does this whole shebang go together in the front?

In addition what are people using to close up the front section of the fuselage to allow mounting of the battery and such?
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Old Apr 23, 2012, 02:14 PM
Reap the wild wind
headlessagain's Avatar
Bristol,UK
Joined Feb 2007
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I do, but not on my Funbat. The 2812 is powering a scratch built KFm-4 puller depron delta and the 2822 is powering my beat up old Bendy Sport. The are cheap as chips (french fries for our US members) and not bad units. However, I find the wires fragile and I've had the motor pop off the mount a few times. I tend to replace the grub screws with cross head screws as I can do these up tighter
Andy
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Old Apr 23, 2012, 02:50 PM
Reap the wild wind
headlessagain's Avatar
Bristol,UK
Joined Feb 2007
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Quote:
Originally Posted by fzromen View Post
chris a 2822 is what I'll be using on mine, but I've got a question regarding the mounting of it.

This will be my first scratchbuild and so I'm confused how to mount my plywood and do I need side pieces that interlock into the front section? How does this whole shebang go together in the front?

In addition what are people using to close up the front section of the fuselage to allow mounting of the battery and such?
If you use thread tools and click on "Show attachments.." you will see all the pictures posted. When you want to look at the post relating to the picture then just left click on image and click on "(post/.."
I made a front hinged top hatch for my Funbat and used a servo arm at the back to hold it in place. My RX and esc live under the lipo tray and cooling air is allowed to flow into both compartments through a slot in the ply motor mount.
Andy
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Old Apr 23, 2012, 03:43 PM
"Fly, yes... Land, No"
OutcastZeroOne's Avatar
United States, CA, Santa Cruz
Joined May 2005
1,326 Posts
Quote:
Originally Posted by fzromen View Post
This will be my first scratchbuild and so I'm confused how to mount my plywood and do I need side pieces that interlock into the front section? How does this whole shebang go together in the front?
You dont need interlocking parts, but it is a good idea to have some kind of "finger" that goes deep into the foam to get a good grip on the foam. If you have any somewhat decent wood working skills you can simply cut the parts normally, and join them together on edge. Just be sure to use a good wood glue, and perhaps a couple of small finishing nails, but pre-drill for them (just put one of the nails in a drill, keeps the wood from splitting). small wood screws would be better but hard to find.

Quote:
Originally Posted by fzromen View Post
In addition what are people using to close up the front section of the fuselage to allow mounting of the battery and such?
I made a cover for my blue funbat useing posterboard and packing tape. I used some push pins to hold it in place.




This cover took a hard belly flop slam onto asphalt with out any real damage, so its a decently druable set up, and easy to do.

On my orange one I made a custom fuse and used a couple of magnets and some large headed short screws.
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Old Apr 24, 2012, 12:38 AM
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United States, OH, Eaton
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Quote:
Originally Posted by fzromen View Post
chris a 2822 is what I'll be using on mine, but I've got a question regarding the mounting of it.

This will be my first scratchbuild and so I'm confused how to mount my plywood and do I need side pieces that interlock into the front section? How does this whole shebang go together in the front?

In addition what are people using to close up the front section of the fuselage to allow mounting of the battery and such?
I copied the firewall in the plans but you don't have to. You do want some wood side panels. Probably the easiest way is to make a firewall that goes against the front of the fuse and then put 2 side panels on it that will glue to the inside of the foam sides. Then just take some square hardwood stock and glue it in the 2 front corners.

I left the bottom of my battery compartment open like the plans but that is probably not the best way. I could easily make a cover hinged with tape and closed with thin velcro straps.
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Old Apr 25, 2012, 12:11 PM
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Joined Sep 2011
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Hey all. I'm trying to put this thing together as my first scratch build (saw it on FliteTest and was hooked!), and I just wanted to run by a few components with you guys first to make sure I was heading down the right path. I've already built the plane itself, and I just need the electronics to make it all work. Since I've never built one / bought the electronics before, I want to make sure I don't get the wrong stuff, especially after waiting for who-knows-how-long for parts to be delivered from HK.

My parts list:
- Motor: HexTronik 24gram Brushless Outrunner 1300kv (400+g of thrust) $8.53
http://www.hobbyking.com/hobbyking/s...er_1300kv.html

- Prop: GWS EP Propeller (RD-8043 203x109mm, 8x4.3) $4.00
http://www.hobbyking.com/hobbyking/s...6pcs_set_.html

- ESC: Hobby King 20A ESC 3A (F-20A) $6.97
http://www.hobbyking.com/hobbyking/s...C_3A_UBEC.html

- Servos: HXT900 9g, $2.69
http://www.hobbyking.com/hobbyking/s...cro_Servo.html

- Control Horns: Pin Horns L22xW19xH.9, $0.97
http://www.hobbyking.com/hobbyking/s...9_10sets_.html

- Battery: Turnigy nano-tech 850mAh 3S, 45-90C LiPo, $9.52
http://www.hobbyking.com/hobbyking/s...Lipo_Pack.html

- Charger: Turnigy Accucel-6, $22.99
http://www.hobbyking.com/hobbyking/s...cessories.html


Does the above listed components seem OK? The big thing for me is just that I get a motor / prop / ESC that will work. Like I said, I'm an absolute beginner at this, and so I have no idea quite what I'm doing. I actually got the motor / prop list off of FliteTest's Nutball build, that they modularized so that it could be ported to their Funbat as well.

Thanks!
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Old Apr 25, 2012, 12:46 PM
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United States, OH, Eaton
Joined May 2006
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Quote:
Originally Posted by kenzietech View Post
Hey all. I'm trying to put this thing together as my first scratch build (saw it on FliteTest and was hooked!), and I just wanted to run by a few components with you guys first to make sure I was heading down the right path. I've already built the plane itself, and I just need the electronics to make it all work. Since I've never built one / bought the electronics before, I want to make sure I don't get the wrong stuff, especially after waiting for who-knows-how-long for parts to be delivered from HK.

My parts list:
- Motor: HexTronik 24gram Brushless Outrunner 1300kv (400+g of thrust) $8.53
http://www.hobbyking.com/hobbyking/s...er_1300kv.html

- Prop: GWS EP Propeller (RD-8043 203x109mm, 8x4.3) $4.00
http://www.hobbyking.com/hobbyking/s...6pcs_set_.html

- ESC: Hobby King 20A ESC 3A (F-20A) $6.97
http://www.hobbyking.com/hobbyking/s...C_3A_UBEC.html

- Servos: HXT900 9g, $2.69
http://www.hobbyking.com/hobbyking/s...cro_Servo.html

- Control Horns: Pin Horns L22xW19xH.9, $0.97
http://www.hobbyking.com/hobbyking/s...9_10sets_.html

- Battery: Turnigy nano-tech 850mAh 3S, 45-90C LiPo, $9.52
http://www.hobbyking.com/hobbyking/s...Lipo_Pack.html

- Charger: Turnigy Accucel-6, $22.99
http://www.hobbyking.com/hobbyking/s...cessories.html


Does the above listed components seem OK? The big thing for me is just that I get a motor / prop / ESC that will work. Like I said, I'm an absolute beginner at this, and so I have no idea quite what I'm doing. I actually got the motor / prop list off of FliteTest's Nutball build, that they modularized so that it could be ported to their Funbat as well.

Thanks!
If you left the paper on, this motor is not a good choice. The plane will be extremely tail heavy. It's probably good if you build it light and want a slower floaty bat. Look through the thread here and see what others have used. I would like to help more but I have to leave for work. I'll check back layer.

Chris
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Old Apr 25, 2012, 02:30 PM
Reap the wild wind
headlessagain's Avatar
Bristol,UK
Joined Feb 2007
3,904 Posts
Hi Ken
the servo's, charger and lipo's are fine. I prefer these horns
http://www.hobbyking.com/hobbyking/s..._horn_set.html
I prefer a motor in the 1400 to 1800 kv range and this motor is ok for a light weight build
http://www.hobbyking.com/hobbyking/s...idProduct=5208. Runs fine on a 3 cell & 7x4 combo
For more performance see my post 756 above for motor suggestions. It's worth giving this one from HK a go http://www.hobbyking.com/hobbyking/s...er_1534kv.html. Really cheap and others have used successfully.
In the UK I buy lots of my stuff from Giantcod and this one goes well http://www.giantcod.co.uk/a220812-18...-p-405608.html and this one looks promising http://www.giantcod.co.uk/epower-gf2...-p-405983.html
I would still suggest adding an inch to the fuse ahead of the wing as this makes it easier to balance the plane and it also allows the space to make a top hatch for the battery. I can run anything from a 3 cell 850 to a 1300 in mine but tend to go for a 1000 for more performance than the 1300 at the expense of shorter flights.
If you update your profile to include your location this will enable other forum members to provide you with local suppliers. I know that many US members rate Heads Up RC http://www.headsuprc.com/servlet/StoreFront and they have lots of motor test data to enable you to choose the correct combination for your needs.
You will not regret building the FunBat. It's tracks like it's on rails and handles wind that would ground all but the most foolish of gas jockeys. Just turn down the rates and dial in some expo for the maiden and have a blast. My 16.5" mini version is just mad with it's roll rate of c.5 a sec!
Andy
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