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RE: kyosho Kelly F-1 - 5/4/2009 7:35 AM   
ronin4740


 

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Status: offline 		With the exception of mounting the prop the Kelly's all ready to go. In reading through the thread it appears that the working CG is approximately 85mm when measured from the LE of the wing where the fuselage meets the wing. As previously mentioned the manual recommends 60-65mm from the spot where the wing dowels go into the fuselage. I drew a line on blue painters tape outwards, measured to this spot from the LE of the wing at the edges of the fuselage and came out with about 100mm from the LE. I'm a little confused but the balance feels right (the plane doesn't want to nose over when the tail is lifted several inches off the ground) and, as it's often said, a nose heavy plane flies poorly, a tail heavy plane flies once.

If anyone's still checking in on this thread and can comment further on the CG point when measured from the LE of the wing close to the left/right edge of the fuselage I'd appreciate it. I'm still waiting on an 8mm prop collet adapter for the Turnigy motor and likely won't get a chance to maiden the plane until next week.

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RE: kyosho Kelly F-1 - 5/7/2009 8:01 PM   
TimJ



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Status: offline 		http://www.rcuniverse.com/forum/fb.asp?m=8413451 This I hope will help you....


quote:

ORIGINAL: ronin4740

With the exception of mounting the prop the Kelly's all ready to go. In reading through the thread it appears that the working CG is approximately 85mm when measured from the LE of the wing where the fuselage meets the wing. As previously mentioned the manual recommends 60-65mm from the spot where the wing dowels go into the fuselage. I drew a line on blue painters tape outwards, measured to this spot from the LE of the wing at the edges of the fuselage and came out with about 100mm from the LE. I'm a little confused but the balance feels right (the plane doesn't want to nose over when the tail is lifted several inches off the ground) and, as it's often said, a nose heavy plane flies poorly, a tail heavy plane flies once.

If anyone's still checking in on this thread and can comment further on the CG point when measured from the LE of the wing close to the left/right edge of the fuselage I'd appreciate it. I'm still waiting on an 8mm prop collet adapter for the Turnigy motor and likely won't get a chance to maiden the plane until next week.



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RE: kyosho Kelly F-1 - 5/8/2009 2:40 PM   
Spuetz



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From: Koeln, GERMANY
Status: offline 		Hello Bob,

I think the Jett 90 will work fine. You'll just have to cut a bit more away from the cowling. The nice thing about the SJ 60 LX is that it fits almost completely into the cowling.
However the four stroke that it was designed for wouldn't be much smaller than the Jett 90 - probalby eaven heavier...

Cheers, Martin

PS: Tell Dub a big thank you for fixing my SJ 60 LX!

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RE: kyosho Kelly F-1 - 5/18/2009 4:57 AM   
ronin4740


 

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I had a chance to maiden the Kelly today and all I can say is "WOW!" The plane is just smoking fast on 6S with a 12x10 prop. The plane tracks like an arrow and isn't a huge handful on landing. It does however take a looooong time to bleed off energy resulting in loooooong approaches.

85mm from the LE of the wing where the wing meets the side of the fuselage leaves the plane just a tad bit nose heavy which is fine for me. I'll either slide the battery back a little further or add an ounce of lead to the tail for subsequent flights to move the CG back as I get more comfortable with the plane.

I know this kit has been out for quite some time but anyone looking for an alternative to the Sundowner for spirited sport flying should take a peek at this model!

I'll take my Eagletree w/GPS and post a graph of the speed as well as amp draw and watts on Tuesday, weather permitting.


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RE: kyosho Kelly F-1 - 5/20/2009 8:17 AM   
ronin4740


 

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Status: offline 		Links to Eagletree graph and Youtube video is here:


I don't believe the 158MPH spike any more than the rest of you but the 120 mph spikes seem possible. 

Unfortunate that this thread has died... I'll go back to flying mine


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RE: kyosho Kelly F-1 - 6/10/2009 12:31 PM   
tIANci



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Status: offline 		Guys ... I just picked up the EP Kelly. I found that the formers were coming off. First, it is the one just behind the trailing edge of the plane. The battery tray seems to be coming off too, there is a blob there, am unsure of its just epoxy or glass and resin. Can I just use plain epoxy to stick it all back together? Will that work or should I perhaps do some glass work? Thanks!

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RE: kyosho Kelly F-1 - 6/10/2009 4:36 PM   
ronin4740


 

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Status: offline 		You might want to do a little  bit of glass work but epoxy or gorilla glue will likely suffice.  I had a battery tray come loose in a Hyperion P-51 with a fiberglass fuselage and gorilla glue really did the trick for locking it down.

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RE: kyosho Kelly F-1 - 6/10/2009 8:14 PM   
tIANci



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Status: offline 		Ronin ... appreciate the reply! I think I better do some glass work with resin ... not too hard to do anyways.


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RE: kyosho Kelly F-1 - 8/27/2009 8:37 AM   
chalmrast


 

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Status: offline 		Thought I'd chime in here since this thread has been dormant for a couple of months. I'm having a great time with my Kelly. So smooth & stable... a joy to fly. My setup is as follows:

Motor: Scorpion 4025-10
Prop: APC 12x12
ESC: Turnigy HV 100A
Battery: Rhino 6S-4900 25C

Watts = 1500
AUW = 7.0lbs

It goes about 110 mph on straight & level flight. Wish it were a little faster but I think on 6S this is as much as I'm going to get. With my ESC & motor I have the room to go all the way up to 12S and 2000 watts. 12S for this plane is insane but others have done 10S with success....

Here are some pics & video....







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RE: kyosho Kelly F-1 - 8/27/2009 8:47 AM   
chalmrast


 

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Status: offline 		Oh, I thought this was kind of neat too... I set up a stationary camera to get doppler readings and the plane went right through the frame! I was unable to extract decent audio for the doppler analysis because of background noise....



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RE: kyosho Kelly F-1 - 8/27/2009 4:20 PM   
ronin4740


 

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Status: offline 		Very nice! I'm glad to see that it's not just mine that wants to land at 60mph How's your motor do as far as heat? Mine comes down pretty hot but it looks like you've opened more air flow on either side of the fuselage than I have. I might have to try widening mine so that they're more like yours.

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RE: kyosho Kelly F-1 - 8/27/2009 9:17 PM   
tIANci



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Status: offline 		Dang ... my Kelly project got side tracked, am going to try to get her up by end September. Mine will not be as fast as what you guys have.

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RE: kyosho Kelly F-1 - 8/28/2009 8:18 AM   
chalmrast


 

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quote:

ORIGINAL: ronin4740

Very nice! I'm glad to see that it's not just mine that wants to land at 60mph How's your motor do as far as heat? Mine comes down pretty hot but it looks like you've opened more air flow on either side of the fuselage than I have. I might have to try widening mine so that they're more like yours.


Yes, landings are hot! I think the motor is less than 120 after flying. Not bad considering ambient is sometimes near 100 when we're flying this time of year....

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RE: kyosho Kelly F-1 - 8/28/2009 8:43 AM   
ronin4740


 

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Status: offline 		Indeed, very good temperature on the motor! The Turnigy motor I'm using has a slightly hotter wind (580kv vs. 515kv on your Scorpion 4026-10 motor) so I've been reluctant to try anything higher than a 10 pitch prop. The 12x10 resulted in excellent performance but the motor and battery were coming down pretty hot. An 11x10 helped lower the temperature of both (packs are cool to the touch, motor is hot but not burning hot). I've looked at the side view photos of the cheek vents you've cut and I'm sure they add a great deal more air flow than the dots I cut.

Did you glass around the cheek vents to add strength back to the area where you removed material? What did you use to cut them? I'm almost afraid to take the dremel tool to the nose of my Kelly again...

as far as you're temperature goes, yes but it's a dry heat (I grew up in Reno - high desert ya know!)

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RE: kyosho Kelly F-1 - 8/31/2009 7:31 AM   
chalmrast


 

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Status: offline 		OK, got another flight in and I took the motor temp right after landing. It was 150 degrees. Ambient was about 100.

I did not glass on the inside of the "cowl" but I did epoxy ply to the back of the "firewall." I also CA'd all around the backside & front because it came loose after 2 flights.

Here is some un-edited raw video from today. Kind of hard to see the speed because once again, not a single cloud in the sky. Towards the end you can see a few clouds.



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RE: kyosho Kelly F-1 - 8/31/2009 7:42 AM   
ronin4740


 

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Status: offline 		Very nice! I can tell by the audio as your Kelly passes by the camera that she's hustling! Thanks for giving me an idea of what your motor temperatures are. One of these days I really should add an IR Temperature sensor and Tach to my flight box but for now I think if I follow your example for cooling in the cowl section it'll help me substantially.

Great job of missing the shrubbery at the end of the runway on landing!!! If it'd been me at the sticks I'm sure I would have gone right through one of those sage brush plants.

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RE: kyosho Kelly F-1 - 8/31/2009 11:44 PM   
chalmrast


 

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Status: offline 		Oh, I've hit those shrubs! See the end of these videos...

http://www.vimeo.com/5894362


http://www.vimeo.com/6022825




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RE: kyosho Kelly F-1 - 9/20/2009 10:22 PM   
terminator_a


 

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From: Belle Vernon, PA, USA
Status: offline 		Guys,
I have the Kelly F1 and I have to say you sure cant beat the looks and the performance in the air. One MAJOR complaint is the super hoaky landing gear set up. I fly off of a grass field and even when I grease the landing in I have had the wheel pants catch and poke right up through the bottom and the TOP of the wing! NICE... I know that many of you have probably had similar experiences. I replaced the stock wheel with a little larger diameter and that seemed to help a little. The wires are just too flexible. I dont want to take the pants off because that is what makes the plane.

Has anyone come up with a fix or mod to alleviate this problem? I love flying the plane but hate repairing it all the time. HELP!



Thanks

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RE: kyosho Kelly F-1 - 9/21/2009 2:16 AM   
chalmrast


 

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quote:

ORIGINAL: terminator_a

Guys,
I have the Kelly F1 and I have to say you sure cant beat the looks and the performance in the air. One MAJOR complaint is the super hoaky landing gear set up. I fly off of a grass field and even when I grease the landing in I have had the wheel pants catch and poke right up through the bottom and the TOP of the wing! NICE... I know that many of you have probably had similar experiences. I replaced the stock wheel with a little larger diameter and that seemed to help a little. The wires are just too flexible. I dont want to take the pants off because that is what makes the plane.

Has anyone come up with a fix or mod to alleviate this problem? I love flying the plane but hate repairing it all the time. HELP!



Thanks


After this video was shot and I taxied back I was treated to a 3/4" hole in my wing, right through the balsa. At first I thought it must have been a rock but one of my FB's stated he thought the LG bent backwards and the back part of the wheel pant poked through the bottom of the wing. I brushed that off as a crazy thought but after reading your post I'm not so sure any more. The hole does appear to be right where the wheel pant would hit the wing if it bent all the way back!

You could trim 1/4 to 3/8 off the bottom of the wheel pant so that the bottom of the pant is higher off the ground. Don't know if that would help much for grass. The other option is to cut a piece of plywood in a triangle and install it behind the gear so that it braces it. I did that on a smaller warbird and it worked well.

Keep this in mind though, when you take out flex, something else has to give somewhere else.... that could be in the form of a total nose over, or ripping the LG out of the wing altogether. I kind of like the flex.

You could also try and get some wire with less flex, like titanium or 3/16" music wire. You could heat up the music wire to strengthen it... not too much though or it will anneal & become weaker.





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RE: kyosho Kelly F-1 - 9/21/2009 6:28 AM   
Gearhead8


 

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From: Downey, CA, USA
Status: offline 		Most that fly this bird on grass, do not use the wheel pants for that reason. The great work perfectly on pavment.

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RE: kyosho Kelly F-1 - 10/1/2009 5:48 AM   
ronin4740


 

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Status: offline 		Ugh.... I managed to "stub a toe" on landing this evening... One of those one landing isn't good enough so we're going to have to do two bouncy landings... When it was settling in the second time I let the nose dip a little more than I should have and the tip of the wheel pant caught the pavement. I could hear the "TWACK!" from the pilot's box. Yes, it bend the LG all the way back and up through the covering on the bottom AND the top of the wing... A little balsa and covering work and all will be well... Still irks me though - I should have held the nose up and I knew it but just didn't want to put the gear down 3/4ths of the way down the runway... I'll upload photos if anyone's interested.

Chris

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RE: kyosho Kelly F-1 - 10/1/2009 10:34 PM   
aturkington


 

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Status: offline 		I am interested... I fly mine off grass without pants. After some inital noseovers due to heavy forward CG and a crack of the air intake - it seems to land fine. I am interested in getting those pants on but not at the cost of more damage to the plane.

Where do the pants catch the grass? In front? I would be happy to do some shaving if it meant I could use them!

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RE: kyosho Kelly F-1 - 10/2/2009 1:07 AM   
ronin4740


 

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Status: offline 		I'll take a few shots of the wing and upload them before I repair it. It was the front of the wheel pant which got caught on the asphalt and caused the tail of the wheel pant to be driven backwards and up through the wing. I dunno if you could remove enough material to keep this from happening in the grass as the Kelly likes to land fast... Maybe with larger wheels the chance of this happening could be minimized.

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RE: kyosho Kelly F-1 - 10/31/2009 12:00 AM   
terminator_a


 

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From: Belle Vernon, PA, USA
Status: offline 		Hey guys,
Well I finally patched both the bottom and the top of both sides of the wings. Because I wanted the covering to match I ordered the replacement covering from Kyosho. What a mistake, 20 some bucks down the tubes. The color is an exact match but the covering is super garbage. It will not shrink up without crinkling up into a ball. I dont recommend it.

I also replaced the stock wheels with larger diameter du bro super lite wheels. I made a new set of gear from harder 5/32 piano wire. I epoxied square blocks in the wheel pants to hold the wire because the little wooden rings did not have enough surface area to hold to the inside of the pants and broke off causing my last flip over on landing. I also trimmed about 1/8 to 1/4 off the top of the wheel pant stems because they were hitting the wing and not allowing me to bend the gear forward on an angle. I have not had a chance to try it out yet as our weather has been crappy and our flying season is really pretty much over for the year.

Has anyone out there had to add an additional former to your Kelly? Right after the cowling stops I noticed that the fiberglass on my Kelly has flattened out to the point of actually a dimple. I guess I will have to try to make a former to hold the fiberglass out in that area. Does anyone have any other fixes for this?

Thanks

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RE: kyosho Kelly F-1 - 2/23/2010 4:26 AM   
SpeedBoy



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Status: offline 		Hey guys , can you notice something unusual on this Kelly ????

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