HobbyKing.com New Products Flash Sale
Reply
Thread Tools
Old Jan 08, 2002, 05:54 PM
Registered User
Jim Phelps's Avatar
Elizabethtown/Ft. Knox, Kentucky, United States
Joined Jan 2001
1,125 Posts
125% F-18

OK here's what I've done while waiting for the fan for my T-45.
I had Kevin's plans enlarged 125% to fit the Midi fan and this is what I got.
I did not use a full flying stab because I didn't want to mess with a bearing assembly. The aileron servos are mounted in the wing.
Specs. so far;
Hacker B5018S, 14-2400's, Jeti 70A opto controller, covering is flat gray super monocote.
I don't have any weights yet.
I fired up the fan last night with a 12 cell unmatched half charged 2400 pak and WHOW it almost pulled out of my hand! It was running about 37 Amps, around 460 plus watts.
This was a quick build (less than 2 weeks, and we've been busy at work 160 hrs in the last 2 weeks).
If it flys anything like the normal F-18 someone ( Robert ) should make a Midi size kit. It would be simple to build and fast to get in the air without getting all bogged down in scale details.
It's supposed to be in the mid 40's Sunday so will report on the flight Monday.
Jim Phelps
Jim Phelps is offline Find More Posts by Jim Phelps
Reply With Quote
Sign up now
to remove ads between posts
Old Jan 08, 2002, 05:56 PM
Registered User
Jim Phelps's Avatar
Elizabethtown/Ft. Knox, Kentucky, United States
Joined Jan 2001
1,125 Posts
For comparison;
Jim Phelps is offline Find More Posts by Jim Phelps
Reply With Quote
Old Jan 08, 2002, 06:19 PM
Registered User
Doc Watson's Avatar
UK
Joined Mar 2000
1,197 Posts
Cooool.........

Can you fit 2 fans in there?


Doc
Doc Watson is offline Find More Posts by Doc Watson
Reply With Quote
Old Jan 08, 2002, 06:28 PM
Flying Welder Pilot
Plane Crazy's Avatar
Reno, Nevada
Joined Jan 2001
1,137 Posts
Jim- Your just a building fool Looks great!!!
Whats the RTF weight?

Gordon
Plane Crazy is offline Find More Posts by Plane Crazy
Reply With Quote
Old Jan 08, 2002, 06:42 PM
Lithium Member
Herb's Avatar
Irvine, Calif USA
Joined Feb 1999
12,177 Posts
Very nice! Yes Robert should look into it, I am sure it would be a commercial success. I the best of all worlds it would include a dual use center former(s), for MidiFan & for HW-609. Btw the Jeti (old white sticker) controller might not be the best match for the Hackers, the new Jeti version (@ 3-5 deg timing) is a much better match.
Herb is offline Find More Posts by Herb
Reply With Quote
Old Jan 08, 2002, 07:42 PM
EDF all the way!
bruff's Avatar
Gilbert, Az
Joined Jun 1999
8,020 Posts
F-18

Looks great, now add EJF's new micro retracts. Then you can ROG. These are all metal and smaller than the micro Spring-Air retracts. EJF's are air up and air down. He should be announcing them this week. First lot is due 1st of Feb. I have a test set in my new F-86.
Bob Ruff
bruff is online now Find More Posts by bruff
Reply With Quote
Old Jan 08, 2002, 09:28 PM
Registered User
Daren's Avatar
Los Alamos, NM, USofA
Joined Nov 2000
3,123 Posts
Bob,
Not to get too far off-topic, but what's the weight range EJF's retracts will handle? Any estimated cost at this point?

Daren
Daren is offline Find More Posts by Daren
Reply With Quote
Old Jan 09, 2002, 02:36 AM
EDF all the way!
bruff's Avatar
Gilbert, Az
Joined Jun 1999
8,020 Posts
Retracts

The retracts will handle 7 to 8 lbs. Check with Robert on cost.Here is picture of my proto set. Production units are to be blue.
bruff is online now Find More Posts by bruff
Last edited by bruff; Jan 09, 2002 at 09:26 AM.
Reply With Quote
Old Jan 09, 2002, 02:45 AM
Registered User
gbruce's Avatar
Canada, AB, Airdrie
Joined Oct 2001
2,324 Posts
Cool Jim!

So what are the dimensions and do you think a twin MF-480 version would be doable or would a different sizing be required?

Thanks for posting this!!

Bruce
gbruce is offline Find More Posts by gbruce
Reply With Quote
Old Jan 09, 2002, 08:23 AM
Registered User
Jim Phelps's Avatar
Elizabethtown/Ft. Knox, Kentucky, United States
Joined Jan 2001
1,125 Posts
At 125% it would be tight to get 2 fans in, but if the fuse was changed a little to be more round and scale it could be done. my original idea was to put retracts in it. I decided to keep it as simple as possible (as Kevin did), no hassles- Charge it, Launch it, Fly it, Land it, Forget it.
Another reason I didn't get carried away with it is that I have had two different people send me e-mails that they were coming out with glass kits that will do all that you guys have mentioned.
Herb, I have 3 of the white sticker Jeti's running Hacker motors and they have been great so far. I just got a 40A a few days ago that has the gold sticker. What is the difference in them?
Thanks for the comments.
Jim Phelps
Jim Phelps is offline Find More Posts by Jim Phelps
Reply With Quote
Old Jan 09, 2002, 09:41 AM
Electriaddict
dorysch1's Avatar
Melville Saskatchewan Canada
Joined Mar 2001
1,579 Posts
Jim I run 16 zapped 2400's with my hacker 50-18s and a Jeti 70 amp runs around 53 amps robert set me up with that it works nice
dorysch1 is offline Find More Posts by dorysch1
Reply With Quote
Old Jan 10, 2002, 07:17 AM
Registered User
Jim Phelps's Avatar
Elizabethtown/Ft. Knox, Kentucky, United States
Joined Jan 2001
1,125 Posts
dorysch1,
Wow-16 cells! Is it in a midi fan? After I fired mine up on 12 cells I was worried about using 14. I guess I will try 16 now.
Thanks, Jim Phelps
Jim Phelps is offline Find More Posts by Jim Phelps
Reply With Quote
Old Jan 10, 2002, 09:54 AM
Electriaddict
dorysch1's Avatar
Melville Saskatchewan Canada
Joined Mar 2001
1,579 Posts
Yep Midi sounds pretty mean but of course a guy always wants more but then I have to pony up for a bigger controller so maybe I will just run 16 for now until the controllers come down on price a bit or I will just start a new project something sleeker
dorysch1 is offline Find More Posts by dorysch1
Reply With Quote
Old Jan 10, 2002, 07:40 PM
Lithium Member
Herb's Avatar
Irvine, Calif USA
Joined Feb 1999
12,177 Posts
Quote:
Originally posted by Jim Phelps
Herb, I have 3 of the white sticker Jeti's running Hacker motors and they have been great so far. I just got a 40A a few days ago that has the gold sticker. What is the difference in them?
Thanks for the comments.
Jim Phelps
Goldsticker Jeti brushless sensorless controllers (generally available after the Nürnberg fair) have adjustable timing, 2-5° for Hacker, Lehner & Kontronic, 18° for Mega, Phasor, Plettenberg & six-pole motors, and 30° for Köhler motors...

Old white sticker controllers have fixed 18° timing. Timing can play some role in performance & efficiency, although it seems to have less of an effect at high rpms.

For now I use the Shultze controller for my Hacker B50 (HW-620 fan & WeMoTec F-16). Your Jeti will be just fine, but in the future you might want to switch to a controller with less sharp timing, I think Chris True is/will be experimenting on this as well.
Herb is offline Find More Posts by Herb
Last edited by Herb; Jan 10, 2002 at 07:48 PM.
Reply With Quote
Old Jan 10, 2002, 08:24 PM
Electriaddict
dorysch1's Avatar
Melville Saskatchewan Canada
Joined Mar 2001
1,579 Posts
Hmmmm thanks
dorysch1 is offline Find More Posts by dorysch1
Reply With Quote
Reply


Thread Tools

Similar Threads
Category Thread Thread Starter Forum Replies Last Post
KCOX F/A-18 Plans.... Kevin Cox Electric Ducted Fan Jet Talk 6 Apr 20, 2007 03:11 AM
125% Kc F-18 #2 Jim Phelps Electric Ducted Fan Jet Talk 15 May 05, 2002 04:49 PM
Time To Build EJF F-18? austin9000 Electric Ducted Fan Jet Talk 2 May 19, 2001 01:43 AM
Covering EJF's F-18 LJH Electric Ducted Fan Jet Talk 8 May 03, 2001 01:12 AM
f-18 from EJF exowatt Electric Ducted Fan Jet Talk 6 Apr 27, 2001 08:58 AM