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Super Kraft F3D questions - 11/24/2007 1:57:16 PM   
Duane-RCU



Posts: 424
Joined: 5/5/2002
From: Arlington, TX, USA
Status: offline 		Grabbed one NIB on ebay for $60.00 shipped, looking for reasonable power options. I know, Jett .35 if unlimited budget, right? But those are out of the budget. Options seem to be OS .32, S.T. G34, TT .36 Pro, and the gms .32 Also, how fast can these handle? And any bad habits or weakness to look for? And thinking of using 225's for servos, or the Expert ones. Stock hardware, or should I replace it. Any tips would be appreciated.
       Post #: 1

RE: Super Kraft F3D questions - 11/24/2007 4:22:24 PM   
js3



Posts: 1142
Joined: 1/30/2002
From: Arvada, CO, USA
Status: offline 		Don't forget Webra has a very nice .32.

_____________________________

John
I feel a lot more like I do now than I did earlier!

(in reply to Duane-RCU)
       Post #: 2

RE: Super Kraft F3D questions - 11/24/2007 5:44:35 PM   
vertical grimmace


 

Posts: 1145
Joined: 3/13/2004
From: ft collins , CO, USA
Status: offline 		These are great flying planes. Very fast and clean. A little tricky to land. Lose the stock landing gear. It will fold up like a pretzel. The tail wheel wire is very soft also and puts a lot of strain on the rudder. Just lose that as well and put a skid on it. I used a GP viper landing gear and it works great. I have just moved mine back onto the wing by cutting out a rectangle and epoxying in a plywood block. Be sure to check all of the seems around the wing and fuselage. Mine was seperating in these areas.
As for power, I had on OS .25 FX in mine and it was god for about 110mph or so. I have just installed a TT .36. I know this will kick up the speed. This airplane is really clean and takes advantage of high pitch props turning high RPM. Get a Jett muffler to take advantage of this. I am going to try an 8-8 apc on the TT .36. It is taching 17,500 right now. I think that is pretty good.
When landing have very flat low approaches as it is difficult to lose speed.
Good luck.

(in reply to js3)
       Post #: 3

RE: Super Kraft F3D questions - 11/24/2007 6:12:11 PM   
Duane-RCU



Posts: 424
Joined: 5/5/2002
From: Arlington, TX, USA
Status: offline 		I forgot the Webra, I may be able to find one. I'm interested in what the TT .36 can do. What prop is on it now, and how fast do you think it is? It seemed to be rated low in hp and rpm, so I wasn't sure. The .32sx seemed to be rated the best, but I didn't know the "real world" numbers.

(in reply to vertical grimmace)
       Post #: 4

RE: Super Kraft F3D questions - 11/24/2007 8:32:49 PM   
vertical grimmace


 

Posts: 1145
Joined: 3/13/2004
From: ft collins , CO, USA
Status: offline 		I am leaving right now to go test it. I will let you know. In the test run it was very strong.

(in reply to Duane-RCU)
       Post #: 5

RE: Super Kraft F3D questions - 11/25/2007 12:07:03 AM   
vertical grimmace


 

Posts: 1145
Joined: 3/13/2004
From: ft collins , CO, USA
Status: offline 		Sorry to report no flight. This TT .36 is very strong though and responds well to the pipe. My tach was jumping around as it is a cheapy but it seemed to settle around 20,000. I think this is very good for this plane and an 8-8 prop. The problem was, at full throttle the radio was glitching pretty bad. That is a sure sign of a bad filter in the RX and I need to swap it out and send that one in.
I do not know how fast you want to go, but if you do not want to spend a ton of money I recommend either the OS .32 or this Thunder Tiger .36. Plus they will drop right in without any mods. Both are light and I think will provide enough power to get you to at least 130-140 mph.

(in reply to vertical grimmace)
       Post #: 6

RE: Super Kraft F3D questions - 11/25/2007 4:18:01 PM   
Duane-RCU



Posts: 424
Joined: 5/5/2002
From: Arlington, TX, USA
Status: offline 		Sorry to hear about the Rx, I know what that's like! Sounds like that set up is what I'm looking for. The TT.36, and a Jett/Ultra Thrust muffler maybe? Just let me know when you are able to get a flight in. Thanks for the info.

(in reply to vertical grimmace)
       Post #: 7

RE: Super Kraft F3D questions - 11/25/2007 5:09:31 PM   
DonStegall


 

Posts: 624
Joined: 8/8/2005
From: Monroe, NC, USA
Status: offline 		I've had a lot of these planes with a number of different engines. I've even stuffed .46 ball bearing engines in them.

With a Magnum 36 XLS and a Macs tuned pipe, I estimate about 130 to 140 mph.

I agree with the moving of the landing gear into the wing. I posted photos of how to do this way back in 2001 or 2002. The landing gear that comes with it is not nearly strong enough. If you want to see photos, I can snap a few of a wing that has the landing gear in it.

They do come apart at the joints. I highly recommend that you go all around the wing and the stab with thin CA. Then some medium. Use acetone to clean up any overrun.

Also, the elevator needs as much throw as you can get for landing. Otherwise you will run out just when you need it.

I used airbrakes on landing. Raising the ailerons about 1/8" to 3/16" helps with the landing characteristics.

It's too bad these planes aren't made anymore. The electric version that had no firewall / engine mount was great for putting JETT or Nelson engines in.

One other thing. The fuselage joints are weak. I used to add 1" fiberglass cloth tape with polyester resin everywhere I could reach.

_____________________________

Don Stegall
RCPRO - http://www.rcpro.org - http://www.rcpylon.com

(in reply to Duane-RCU)
       Post #: 8

RE: Super Kraft F3D questions - 11/30/2007 2:59:42 AM   
Duane-RCU



Posts: 424
Joined: 5/5/2002
From: Arlington, TX, USA
Status: offline 		Problem solved..Jett .35...But not mine. Another guy that's a speed freak had an LR1 he was going to put the Jett on, we thought it would be better on the F3D (longer wing span/easier to see) So we traded, now I have the LR1, and the F3D will be WAY faster than if I had it. Thanks for the help, and to Don for the tips on what to do to the F3D.
Now I will be hunting LR1 building tips, and Joe can continue looking at the F3D stuff.

(in reply to DonStegall)
       Post #: 9

RE: Super Kraft F3D questions - 11/30/2007 8:58:34 PM   
hopken


 

Posts: 11
Joined: 9/15/2005
From: Cedar Park, TX, USA
Status: offline 		I've had mine for a several years. I fly it for a while and then put it back in the closet. I have a Jett 50 in mine! Its great. I also put the black jett muffler(considered the quickie muffler) on mine. I'm thinking about moving up to the Quickie level and its good to practice with. I'm using an APC 8x7.5. Its turning on the ground around 18.8k. Its a good idea to let someone hold it on the ground and take off at full throttle with up elevator. It also a good idea to kill the engine before you land it. This has saved me alot of props! I've never put the radar on it so I'm not sure how fast it is. I'm thinking somewhere around 120-130mph. Its a blast to fly. Very smooth in the air. I'm scared to lose it since you can't buy them any longer.

KH
Austin, Tx

(in reply to Duane-RCU)
       Post #: 10

RE: Super Kraft F3D questions - 11/30/2007 10:44:03 PM   
vertical grimmace


 

Posts: 1145
Joined: 3/13/2004
From: ft collins , CO, USA
Status: offline 		It really is too bad that there is not something comparable to it available. Especially dor the price they went for. Sorry to say but I believe the Kangke F3D is a faster plane than the LR1. If it would just get warm here I will try to get in a a flight with the TT .36. I love how this plane knife edges.

(in reply to hopken)
       Post #: 11

RE: Super Kraft F3D questions - 12/1/2007 12:35:05 AM   
Duane-RCU



Posts: 424
Joined: 5/5/2002
From: Arlington, TX, USA
Status: offline 		I know the F3D will be faster, that's why I traded him. I'm not going to over-power the LR1, just make it a nice little sport flier. I'm afraid of making it too heavy, it seems like it will be pretty much there anyhow, judging by how much the empty/unbuilt parts are already.
These are probably junk, you can also get them without covering (good choice!) the 300 Class Racers.... http://www.hobbypeople.net/gallery/123572.asp Any seen these yet?

(in reply to vertical grimmace)
       Post #: 12

RE: Super Kraft F3D questions - 12/1/2007 2:27:51 AM   
dwbebens


 

Posts: 207
Joined: 4/25/2005
From: Dickson, TN, USA
Status: offline 		Here's what I've been racing in our Warbird class here in Nashville. It is a John Fotiu "Paranoia" from about 1980 with a stretched wing of 355 sq-in. It weighs a little over 3 lbs. It has an OS 32 FX on it with an APC 8-8 prop. It is very slippery. I keep mis-judging my flying starts and getting to the starting line early because I approach on the down line. It speeds-up so much that my timing is way off. With this plane too, I need to shut-off the engine way before I land it in order to get it on the ground and save the prop.

Doug Bebensee

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(in reply to Duane-RCU)
       Post #: 13

RE: Super Kraft F3D questions - 12/5/2007 7:24:42 PM   
vertical grimmace


 

Posts: 1145
Joined: 3/13/2004
From: ft collins , CO, USA
Status: offline 		Doug, What kind of RPM is your .32 turning with that prop? I ran my TT .36 yesterday and was getting a solid 17,500 with the APC 8-8. This is with a Jett muffler. It sounds very strong and I think will really haul. The math says that is good for no more than 140 mph. Should be fun. Now if I can just get out to the field to try it out.

(in reply to dwbebens)
       Post #: 14

RE: Super Kraft F3D questions - 12/5/2007 8:31:07 PM   
dwbebens