FlightTech F-20 electric conversion
08-06-2009, 07:44 PM
#1
Thread Starter
My Feedback: (28)
Join Date: Apr 2003
Location: Heath,
TX
Posts: 3,886
Likes: 0
Received 0 Likes
on
0 Posts
FlightTech F-20 electric conversion
We have had this plane laying around for years.
Was going to be a turbine conversion, but now we have decided to embrace the electric revolution and are going to give it a shot.
Lots of work to do, but hopefully will be ready for Greater Southwest next month. Thats the plan anyway.
Took a few pics with the cell phone this afternoon.
Will add as we go.
Was going to be a turbine conversion, but now we have decided to embrace the electric revolution and are going to give it a shot.
Lots of work to do, but hopefully will be ready for Greater Southwest next month. Thats the plan anyway.
Took a few pics with the cell phone this afternoon.
Will add as we go.
08-06-2009, 09:19 PM
#5
My Feedback: (28)
Join Date: Apr 2002
Location: New Springfield,
OH
Posts: 710
Likes: 0
Received 0 Likes
on
0 Posts
RE: FlightTech F-20 electric conversion
I had one of them from flighttech, flew on a os91 dynamax, **** kit to build, 1/2 the parts need re-shaped! Wish I had it back, lost it in the 10'ft tall corn field at Heart of Ohio in 1998.
08-06-2009, 09:27 PM
#6
Senior Member
Join Date: Jul 2007
Location: Ontario, CA
Posts: 310
Likes: 0
Received 0 Likes
on
0 Posts
RE: FlightTech F-20 electric conversion
that ship looks allmost like a bryon f-20 allmost so im going to keep a watch on this due to i have one here so keep us well posted please
08-07-2009, 01:47 PM
#7
My Feedback: (28)
Join Date: Apr 2002
Location: New Springfield,
OH
Posts: 710
Likes: 0
Received 0 Likes
on
0 Posts
RE: FlightTech F-20 electric conversion
ORIGINAL: turboratt
that ship looks allmost like a bryon f-20 allmost so im going to keep a watch on this due to i have one here so keep us well posted please
that ship looks allmost like a bryon f-20 allmost so im going to keep a watch on this due to i have one here so keep us well posted please
The flightech f-20 is just a 1/2 scale smaller then the byron's. I used byron's f-20 decals on mine.
08-11-2009, 10:08 AM
#8
Thread Starter
My Feedback: (28)
Join Date: Apr 2003
Location: Heath,
TX
Posts: 3,886
Likes: 0
Received 0 Likes
on
0 Posts
RE: FlightTech F-20 electric conversion
ORIGINAL: Zagzoo
I had one of them from flighttech, flew on a os91 dynamax, **** kit to build, 1/2 the parts need re-shaped! Wish I had it back, lost it in the 10'ft tall corn field at Heart of Ohio in 1998.
I had one of them from flighttech, flew on a os91 dynamax, **** kit to build, 1/2 the parts need re-shaped! Wish I had it back, lost it in the 10'ft tall corn field at Heart of Ohio in 1998.
nice looking plane
getting ready for primer and paint this week
08-11-2009, 12:59 PM
#9
RE: FlightTech F-20 electric conversion
Ronnie
pulcini built one of the cressline ones years back with a ramtec. it flew really well. at least until a stray kiddo straddled and sat on the fuse between the wings and the stab. no visible damage but next flight the tail shook off and created one of the most spectacular crashes in my memory bar none. he could help with cg and stuff i am sure.
pulcini built one of the cressline ones years back with a ramtec. it flew really well. at least until a stray kiddo straddled and sat on the fuse between the wings and the stab. no visible damage but next flight the tail shook off and created one of the most spectacular crashes in my memory bar none. he could help with cg and stuff i am sure.
08-11-2009, 04:04 PM
#11
My Feedback: (28)
Join Date: Apr 2002
Location: New Springfield,
OH
Posts: 710
Likes: 0
Received 0 Likes
on
0 Posts
RE: FlightTech F-20 electric conversion
I might still have my set of plans laying around for the F-20. Ill have to go look thru the work shop.
btw..
were is the gear doors for the main?
btw..
were is the gear doors for the main?
08-11-2009, 05:34 PM
#13
My Feedback: (28)
Join Date: Apr 2002
Location: New Springfield,
OH
Posts: 710
Likes: 0
Received 0 Likes
on
0 Posts
RE: FlightTech F-20 electric conversion
Well.. no plans but I found the instruction manual if you need the throws. The manual talks about the CG but refers to the plans for location. I have a few more places to look.
throws: ** High **
Up Down
elevator 1 3/8" 1"
rudder 3/4" 3/4"
alierons 1 3/8" 7/8"
Flaps 60degrees
** Low **
Up Down
elevator 5/8" 3/8"
rudder 3/4" 3/4"
alierons 7/8" 5/8"
Flaps 60degrees
throws: ** High **
Up Down
elevator 1 3/8" 1"
rudder 3/4" 3/4"
alierons 1 3/8" 7/8"
Flaps 60degrees
** Low **
Up Down
elevator 5/8" 3/8"
rudder 3/4" 3/4"
alierons 7/8" 5/8"
Flaps 60degrees
08-14-2009, 09:10 AM
#17
Thread Starter
My Feedback: (28)
Join Date: Apr 2003
Location: Heath,
TX
Posts: 3,886
Likes: 0
Received 0 Likes
on
0 Posts
RE: FlightTech F-20 electric conversion
Also the battery packs came in last night
Plan on breaking these in with 5 cycles.
Anyone know what rate of discharge to use on a break in?
Plan on breaking these in with 5 cycles.
Anyone know what rate of discharge to use on a break in?
08-14-2009, 10:35 AM
#18
Senior Member
My Feedback: (32)
Join Date: Feb 2002
Location: Pasadena, MD
Posts: 2,587
Likes: 0
Received 0 Likes
on
0 Posts
RE: FlightTech F-20 electric conversion
Ronnie,
I break in the batteries with the fan installed in the airframe. Here's the procedure I use. On the first 5 runs, throttle up to 50 amps, discharging 70% of the capacity. If the batteries are 5000 mAh, discharge 3500 mAh. You'll need to use a watt meter or the Eagle Tree vLogger so you can see the amount of mAh being used in real time. After those 5 runs, do 3 more runs on the ground discharging 80% capacity and alternating between 50 amps and full throttle. Only go full throttle for a couple of seconds and wait 20 to 30 seconds before doing the next full throttle burst. After those final 3 runs, the batteries are ready to fly. When flying, try to keep the amount of discharge to 80% capacity. By the way, your F-20 build looks great.
If I can help in any other way. let me know.
Kirk
I break in the batteries with the fan installed in the airframe. Here's the procedure I use. On the first 5 runs, throttle up to 50 amps, discharging 70% of the capacity. If the batteries are 5000 mAh, discharge 3500 mAh. You'll need to use a watt meter or the Eagle Tree vLogger so you can see the amount of mAh being used in real time. After those 5 runs, do 3 more runs on the ground discharging 80% capacity and alternating between 50 amps and full throttle. Only go full throttle for a couple of seconds and wait 20 to 30 seconds before doing the next full throttle burst. After those final 3 runs, the batteries are ready to fly. When flying, try to keep the amount of discharge to 80% capacity. By the way, your F-20 build looks great.
If I can help in any other way. let me know.
Kirk
08-14-2009, 02:15 PM
#20
My Feedback: (28)
Join Date: Apr 2002
Location: New Springfield,
OH
Posts: 710
Likes: 0
Received 0 Likes
on
0 Posts
RE: FlightTech F-20 electric conversion
Looking good... btw.. Ill been busy beening back at work (had 8 weeks off).. I get those plans out begining of next week.
hi. i had one of the f-20.flys great,,butttt,,, c/g is way off. like, 1.5 inches..i had to move the gear so the flying, and ground stanc, would work.. set the flying c/g and it will fall on its tail..