Go Back  RCU Forums > RC Airplanes > RC Warbirds and Warplanes
Reload this Page >

Flight-Model KI-61 ???

Notices
RC Warbirds and Warplanes Discuss rc warbirds and warplanes in this forum.

Flight-Model KI-61 ???

Old 07-05-2012, 11:18 AM
  #51  
RBean
 
Join Date: Apr 2007
Location: Lady Lake, FL
Posts: 1,496
Likes: 0
Received 4 Likes on 4 Posts
Default RE: Flight-Model KI-61 ???

I going to have to build my own radiator housing. The one that came with the ARF is not even close to scale.
Old 07-05-2012, 12:15 PM
  #52  
dogshome
Senior Member
Thread Starter
 
dogshome's Avatar
 
Join Date: Nov 2007
Location: newark, UNITED KINGDOM
Posts: 525
Likes: 0
Received 0 Likes on 0 Posts
Default RE: Flight-Model KI-61 ???

This is what I have with the RCGF15. the head and most of the barrel is well exposed and plenty of space at the back for air to get out. No problems with heat at all.



Old 07-05-2012, 12:17 PM
  #53  
dogshome
Senior Member
Thread Starter
 
dogshome's Avatar
 
Join Date: Nov 2007
Location: newark, UNITED KINGDOM
Posts: 525
Likes: 0
Received 0 Likes on 0 Posts
Default RE: Flight-Model KI-61 ???


ORIGINAL: RBean

I going to have to build my own radiator housing. The one that came with the ARF is not even close to scale.
I agree, it's not even rectangular like the original - horrible thing!

Piccys of what you do will be appreciated [8D]
Old 07-07-2012, 03:32 PM
  #54  
RBean
 
Join Date: Apr 2007
Location: Lady Lake, FL
Posts: 1,496
Likes: 0
Received 4 Likes on 4 Posts
Default RE: Flight-Model KI-61 ???

I made my own radiator. It is better than what came with the ARF. Drilled holes behind spinner and cut exit hole in lower rear cowl with air dam. A club member has a 109 with a DLE 20, has done that and works ok for cooling.
Attached Thumbnails Click image for larger version

Name:	Ge94221.jpg
Views:	71
Size:	71.6 KB
ID:	1779614   Click image for larger version

Name:	Wr53818.jpg
Views:	74
Size:	80.5 KB
ID:	1779615   Click image for larger version

Name:	Lq37381.jpg
Views:	85
Size:	98.3 KB
ID:	1779616   Click image for larger version

Name:	Yr48145.jpg
Views:	66
Size:	57.3 KB
ID:	1779617  
Old 07-07-2012, 10:11 PM
  #55  
frets24
My Feedback: (15)
 
frets24's Avatar
 
Join Date: Dec 2007
Location: charlotte, NC
Posts: 1,245
Likes: 0
Received 1 Like on 1 Post
Default RE: Flight-Model KI-61 ???

That looks a whole lot better than the stock radiator...good job

I think the stock radiator came out of my box and went straight to the trash bin as it was wholly and completely not worth even trying to work with[&:]
Old 07-08-2012, 06:15 PM
  #56  
RBean
 
Join Date: Apr 2007
Location: Lady Lake, FL
Posts: 1,496
Likes: 0
Received 4 Likes on 4 Posts
Default RE: Flight-Model KI-61 ???

I did the camo last night. Not sure how it will hold up. I'm used flat green exterior latex left over from another project. It works ok with a coat of auto primer gray on first, but here just painted over the aluminum colored monocoat. Today filled in holes in rear of the wheel wells and painted inside the wheel wells. Found a crack in the spinner. replaced with another 3.5" spinner. P-40 type. Just waiting for muffler that I ordered. Over all weight using all standard size servos, the air retracts and struts and two batteries came out to 10 lbs. It should fly great. My Zero with the same 71" wing span weights 15 lbs 15 oz. My KMP 71" wingspan Hurricane weight 13 lbs 2 oz. They both fly ok at those weights so 10 lbs with same size airplane should be better. I'm out of town working this week so I might be able to test fly this coming weekend if the weather is ok. No pictures yet of the new paint job. Took the pictures but failed to down load them from the camera to the computer. CG is 28% of MAC.
Old 07-08-2012, 07:31 PM
  #57  
frets24
My Feedback: (15)
 
frets24's Avatar
 
Join Date: Dec 2007
Location: charlotte, NC
Posts: 1,245
Likes: 0
Received 1 Like on 1 Post
Default RE: Flight-Model KI-61 ???

The latex ought to stick pretty tight to the gloss surface of the monokote, but if it does have an edge peel up it'll come off like a sticker. Easy to just repaint that splotch if you did the spotty camo

Looking forward to seeing the pics.

When I dug out the scoops for you guys this afternoon I found that I had exactly 4 of the wingtop gun blisters along with the fuel drain/sample ports and a pair of the little scoops for the underside between the wings that I'll send along as well. If you wind up using them great, if not I'm happy just to have a freed up drawer in my small parts cabinet

I'll hunt up a couple small boxes tomorrow and get them mailed this week.

Pics;
Spare parts
underwing fuel ports and vent scoop(on fuse next to left wheel well)
gun blister placement
Attached Thumbnails Click image for larger version

Name:	Ay74231.jpg
Views:	62
Size:	59.6 KB
ID:	1780042   Click image for larger version

Name:	Je99549.jpg
Views:	56
Size:	115.6 KB
ID:	1780043   Click image for larger version

Name:	Xv63662.jpg
Views:	60
Size:	145.6 KB
ID:	1780044  
Old 07-09-2012, 10:52 AM
  #58  
dogshome
Senior Member
Thread Starter
 
dogshome's Avatar
 
Join Date: Nov 2007
Location: newark, UNITED KINGDOM
Posts: 525
Likes: 0
Received 0 Likes on 0 Posts
Default RE: Flight-Model KI-61 ???

ORIGINAL: RBean
10 lbs. It should fly great.
Definitely [8D]

9lb 1oz flies like a trainer [&:]
Old 07-12-2012, 06:03 PM
  #59  
RBean
 
Join Date: Apr 2007
Location: Lady Lake, FL
Posts: 1,496
Likes: 0
Received 4 Likes on 4 Posts
Default RE: Flight-Model KI-61 ???

Here are pictures of the camo job. I got the pitts muffler in today. I'll install to night or tomorrow. Maybe a test flight in the next few days weather permitting. Also time to apply the markings.
Attached Thumbnails Click image for larger version

Name:	Yw69021.jpg
Views:	70
Size:	101.1 KB
ID:	1781260   Click image for larger version

Name:	Kg15291.jpg
Views:	76
Size:	106.2 KB
ID:	1781261   Click image for larger version

Name:	Hn25279.jpg
Views:	72
Size:	107.9 KB
ID:	1781262  
Old 07-13-2012, 06:40 PM
  #60  
RBean
 
Join Date: Apr 2007
Location: Lady Lake, FL
Posts: 1,496
Likes: 0
Received 4 Likes on 4 Posts
Default RE: Flight-Model KI-61 ???

I test flew the Tony today. Warm day, about 88F but light wind. Assembled at field. tested retracts. Then engine was balky. Had not run in a while. Resorted to electric starter. Got it started and running ok. Did a high speed taxi tail came up and felt ok. Cut throttle and taxied back. Good ground handling, no tendency to nose over. On take off gradually added power, just a little right rudder to keep straight eased off the ground at about 2/3 throttle. Took 6 or 7 clicks of right aileron trim, 4 or 5 click down trim. Then retracted gear. Took another 2 clicks down trim with gear up. Tried a loop and roll. ok. Then tried flaps. Had pitch up. Took 4 or 5 clicks of down trim with flaps down. Tried approach stall, with gear and flaps down. Never did get a good break. Just dropped nose and banked a little to the left. Very gentle. Did some slow flight and then landed. Came in slow and landed slower.

Both take offs and landings are slow, but controls remain effective at the low speeds, unlike some warbird.

I reduce elevator throws some and also aileron throws. Rudder and flaps were ok. Flaps were about 45 degrees. Put in 3 percent up mix with gear down and 6 percent down mix. mix with flaps down. CG is 95 mm behind leading edge at root. Instructions say 120 mm for CG. My advise is don't do it. It would be very tail heavy maybe uncontrollable.

The DLE 20 was plenty of power. Not unlimited verticle, but plenty for me. Great combination. Small 3.25 inch wheels proved ok, probably because the plane is so light. Empty weight is right at 10 lbs. This plane is very easy flying for a warbird.

Got three flights in today. No pictures or video, I forgot the camera. Maybe tomorrow.
Old 07-14-2012, 06:03 AM
  #61  
frets24
My Feedback: (15)
 
frets24's Avatar
 
Join Date: Dec 2007
Location: charlotte, NC
Posts: 1,245
Likes: 0
Received 1 Like on 1 Post
Default RE: Flight-Model KI-61 ???

Your "Tony" looks great RBean. Obviously, I would like any KI-61 in the camo scheme[&:] Always good to hear of positive flight reports, happy to hear yours is a good flyer. Really detailed flight report...luv it.

Apologies to you and Dogshome;
Your parts didn't go out until this morning(Saturday, 14 July) Work has been nuts with a lot of new work, which is a good thing as I'm self employed in plumbing. I wasn't finding myself anywhere near a post office during business hours during the week as I had hoped due to the overabundance of new contracts. The international shipping requires a personal appearance so we can all blame it on Dogshome I had hoped to have them out much earlier in the week, but they are actually in route now.

Cheers!
Old 07-15-2012, 08:20 PM
  #62  
RBean
 
Join Date: Apr 2007
Location: Lady Lake, FL
Posts: 1,496
Likes: 0
Received 4 Likes on 4 Posts
Default RE: Flight-Model KI-61 ???

frets24, Thanks for sending scoop. Got to fly today a little. Got in three flights. Tried a snap roll. It snaps quick but stops as soon as you release the controls. However, engine quit on turn from down wind to final. I had throttled back but not all the way to idle. Because of the light weight I was able to land ok with gear and flaps down. I put 1/8 turn rich on the low needle. Next flight it was ok. I'll try to remember the camera next time I go to the field.
Old 07-16-2012, 11:13 PM
  #63  
frets24
My Feedback: (15)
 
frets24's Avatar
 
Join Date: Dec 2007
Location: charlotte, NC
Posts: 1,245
Likes: 0
Received 1 Like on 1 Post
Default RE: Flight-Model KI-61 ???

Very happy to hear of your safe recovery on the dead stick. You are certainly gutsier than I to intentionally snap roll a warbird, but it's very reassuring to hear that this airframe sounds very dynamically stable, but not so much so as to be a slushy acrobat..."snaps quick, but stops as soon as you release the controls." That's pretty cool

Just to clarify that I am thinking of the same manuver that you are executing; for me a "snap roll" is entered from straight and level , 2/3-3/4 throttle. Add just a touch of up and then firewall the throttle simultaneously adding full left rudder(left stick in upper left corner) accompanied by full left aileron and full up(right stick at bottom left corner). Prop torque adds to the effect in a left snap and diminishes a right snap. I'm comfortable with this on my ultimate bipe or sportster 40(the only planes I trust not to go into a death spin). Tried it with the J3 cub once and it sort of just fell over is the only way to describe it...quite unimpressive and upon neutralising the controls it wound up in a level shallow descent; I guess that's a Cub though[&:]
Old 07-17-2012, 08:35 AM
  #64  
RBean
 
Join Date: Apr 2007
Location: Lady Lake, FL
Posts: 1,496
Likes: 0
Received 4 Likes on 4 Posts
Default RE: Flight-Model KI-61 ???

frets24, my snap rolls are elevator full up with rudder and ailerons full left. This plane recovers instantly as controls are released. I removed a little more material from the cowl around front of the engine. Added gun barrels to top of cowl to use as small air scoops. Need all you can get. Inlarged the holes in front top of cowl behind spinner. Started and ran ok. Two flights today. Didn't quit in the air, but if I let it idle on the ground very long after landing the engine quit. I think I'm still getting some vapor lock. The upper rear of the cowl area feels hot. I think the carb and fuel lines start to get too hot from the pitts muffler can as soon as air flow through cowl slows down. Here are some pictures of the plane at the field.
Attached Thumbnails Click image for larger version

Name:	Zx71895.jpg
Views:	65
Size:	96.2 KB
ID:	1782921   Click image for larger version

Name:	Wr53663.jpg
Views:	69
Size:	96.7 KB
ID:	1782922   Click image for larger version

Name:	Ch95421.jpg
Views:	69
Size:	188.7 KB
ID:	1782923   Click image for larger version

Name:	Ga78405.jpg
Views:	62
Size:	176.0 KB
ID:	1782924   Click image for larger version

Name:	Gr91389.jpg
Views:	77
Size:	179.1 KB
ID:	1782925  
Old 07-17-2012, 10:17 AM
  #65  
frets24
My Feedback: (15)
 
frets24's Avatar
 
Join Date: Dec 2007
Location: charlotte, NC
Posts: 1,245
Likes: 0
Received 1 Like on 1 Post
Default RE: Flight-Model KI-61 ???

You may need to open it up a bit as you say. Maybe just a bit more behind the pitts; Something like Keith's install. I would concur with your assesment of the carby getting a bit hot and vaporizing the fuel prior to mixing and induction to the case.

Both of you have really clean installations. Would bet they get a lot of positive nods athe field. The pitts silencers really help a lot to keep the lines nice and you both took some care in cutting the cowls. You'd be amazed at some of the hack jobs I've seen on cowls at the field. Then again, maybe not

I don't care who you are(looking at them), anyone would have to say you both have some fine looking planes. (but then I'm biased...I always liked the Tony since building a Revell plastic model of it when I was a kid...metallic jade green spots with some kind of periwinkle interior and wells...yikes[&:])
Old 07-19-2012, 05:56 AM
  #66  
RBean
 
Join Date: Apr 2007
Location: Lady Lake, FL
Posts: 1,496
Likes: 0
Received 4 Likes on 4 Posts
Default RE: Flight-Model KI-61 ???

frets, I opened up the holes in the upper cowl behind the spinner just a little more. Flew yesterday. Three flights. No engine problems. I can't get over how well this plane flys compaired to other warbirds. With that in mind I'm thinking of maybe doing a KI 100. Get another ARF KI 61, Cut off the engine box, move the firewall back and use a radial cowling. Use a DLE 20 engine. I have another set of Spring Air retracts and servos from another plane I plan to strip and decommission. I'm thinking of using the cowling for the ESM KI 84, which looks very close to the one used on the KI 100.

http://www.troybuiltmodels.com/items/ESMKI84-72FCL.html

I don't have the dimentions so not sure it would work. I did this before, changing a P-40 to a P-36. Made a nice plane.
Attached Thumbnails Click image for larger version

Name:	Ge95932.jpg
Views:	60
Size:	152.7 KB
ID:	1783512  
Old 07-19-2012, 07:12 PM
  #67  
frets24
My Feedback: (15)
 
frets24's Avatar
 
Join Date: Dec 2007
Location: charlotte, NC
Posts: 1,245
Likes: 0
Received 1 Like on 1 Post
Default RE: Flight-Model KI-61 ???

Very nice. Who mfg'd the P-40 that you used for the Hawk/Mohawk conversion? The KI-100 idea sounds pretty cool too. I'd like to see how that turns out.

These folks have a good selection of generic radial cowls in varied sizes, tapered/untapered if you can't otherwise find a candidate cowl;

http://www.fiberglassspecialtiesinc.com/catalog.htm

I've been caught up in doing "a work of art" on the Zero but in anticipation of having both time and weather to fly this coming weekend I did a final (again) premaiden systems check out, cg recheck and ran up the engine. It's setup with a Saito FA-91s right now but I think I'm going to put one of my FA-125's in it instead...the 91 is inherently just such a heavy vibration engine; seems to be trying to shake the plane apart at 3/4-full throttle. I'm not sure it has the umph for the Tony either. It turns a 14x8 or a 15x6 @9100 while I think I'd really like to see a 15x8 or a 16x6 @9250...the FA-125 is smooth as silk at all rpm's as well.

I looked all through this thread and if it's there I must have missed it; What prop and rpm are you and Dogshome using on your engines?
Old 07-20-2012, 04:36 AM
  #68  
RBean
 
Join Date: Apr 2007
Location: Lady Lake, FL
Posts: 1,496
Likes: 0
Received 4 Likes on 4 Posts
Default RE: Flight-Model KI-61 ???

Lee, I got the scoop and other parts. Thanks. The P-36 is from a BH P-40C ARF, 65" wing span. With regard to the KI 61, I'm using a 16-8 blade Master Airscrew, with the DLE 20 with the pitts muffler, getting about 8,000 rpm. Plenty of power. I think the 91 would fly this plane, but the 125 would be better.
Old 07-20-2012, 03:07 PM
  #69  
frets24
My Feedback: (15)
 
frets24's Avatar
 
Join Date: Dec 2007
Location: charlotte, NC
Posts: 1,245
Likes: 0
Received 1 Like on 1 Post
Default RE: Flight-Model KI-61 ???

Glad they got there ok.

The FA-91 will only get around 7000-7400 on a 16x8 and around 8k on the 15x8 so it still sounds a bit weak. I think you're right in that it would fly it but the 125 will be a better fit as it will spin a MAS 16x8 @84-8500. My Tony is right at 12 lbs with the detailing and glassing too so it's a bit more weight to carry around and basing from your info(thanks) that should be perfect. The excessive vibration is really my biggest concern with the 91 and that it would leave nothing in reserve power wise.

Not worried about the wing loading or the all up wieght; It seems that this plane floats as is stock so it should carry the extra just fine. All of my warbirds come in a touch heavy anyway and I've become quite comfortable with flying with them on the stouter side. Might be a big reason I'm leery of snap-rolling them.


Cheers!
Old 07-25-2012, 01:25 PM
  #70  
dogshome
Senior Member
Thread Starter
 
dogshome's Avatar
 
Join Date: Nov 2007
Location: newark, UNITED KINGDOM
Posts: 525
Likes: 0
Received 0 Likes on 0 Posts
Default RE: Flight-Model KI-61 ???

Parts also received [8D]
Old 07-25-2012, 03:57 PM
  #71  
frets24
My Feedback: (15)
 
frets24's Avatar
 
Join Date: Dec 2007
Location: charlotte, NC
Posts: 1,245
Likes: 0
Received 1 Like on 1 Post
Default RE: Flight-Model KI-61 ???

Wow, that was actually pretty fast judging from previous experience. That means my son's package ought to be getting into Wiltshire soon too. That also means we get a phone call soon...YAY!! (we never seem to be able to catch him, so it's always nice when he rings here) Hope it all survived in the bubble envelope.

Cheers!
Old 07-30-2012, 06:50 AM
  #72  
RBean
 
Join Date: Apr 2007
Location: Lady Lake, FL
Posts: 1,496
Likes: 0
Received 4 Likes on 4 Posts
Default RE: Flight-Model KI-61 ???

I installed pilot, 1/6 scale ESM Japanese WWII pilot. Also did instrument panel and gun sight. Not finished with cockpit yet. Here are some pictures so far. I got the scoop installed. Next is maybe some light weathering. This plane flys so good I already have 35 flights.
Attached Thumbnails Click image for larger version

Name:	Fc90414.jpg
Views:	64
Size:	176.0 KB
ID:	1787582   Click image for larger version

Name:	Zv67315.jpg
Views:	65
Size:	63.7 KB
ID:	1787583   Click image for larger version

Name:	Lq36425.jpg
Views:	61
Size:	41.9 KB
ID:	1787584   Click image for larger version

Name:	Au56824.jpg
Views:	65
Size:	63.3 KB
ID:	1787585  
Old 07-30-2012, 06:24 PM
  #73  
frets24
My Feedback: (15)
 
frets24's Avatar
 
Join Date: Dec 2007
Location: charlotte, NC
Posts: 1,245
Likes: 0
Received 1 Like on 1 Post
Default RE: Flight-Model KI-61 ???

The "weathering" that you've already begun around the canopy retaining bolt looks good

That pilot bust from ESM is about the only thing available to us for Japanese figures in the 1/6 and 1/5 scale. So glad that it's a decently good looking one. Really adds a nice touch to good looking plane there, Robt.
Old 07-30-2012, 06:47 PM
  #74  
Asanders
 
Asanders's Avatar
 
Join Date: Jun 2002
Location: Sandy, UT
Posts: 562
Likes: 0
Received 0 Likes on 0 Posts
Default RE: Flight-Model KI-61 ???

Nice looking plane. I have not been a big fan of Japanese warbirds for some reason. But this one sure has a mean look to it and I love that stance on the ground with the gear out. Looks a lot like the 109 but a better designed landing gear lol!
Old 08-07-2012, 07:51 PM
  #75  
RBean
 
Join Date: Apr 2007
Location: Lady Lake, FL
Posts: 1,496
Likes: 0
Received 4 Likes on 4 Posts
Default RE: Flight-Model KI-61 ???

I thought I had my engine problems solved. However, the other day I flew once. No problems. After a while I started up and flew again. Ran fine, throttled back to about half throttle getting ready to lower the gear and flaps for landing, then the engine sagged and quit. I was low and going away from the field, tried to turn back to field but could see I was not going to make runway. So tried for area between the pitts and pilot stations. However, there was a fair cross wind blowing and plane went behind the fence and hit a concrete bench. Totally destroyed the left wing. Very little damage to the rest. Hobby King had these on sale or about $100 so I just ordered the whole ARF. I doubt one can get just the left wing from them. I've read their customer service is non-existent.

I've now modified the cowling with two openings in the front of the cowl just in above the spinner with air ducted to just above the carb. Also opened up the rear lower cowl area some more. Just waiting for my spare parts collection (ARF) to arrive.

I've got a spare RCFG 20 cc gas engine, servos, receiver, etc. Maybe I'll use the fuslage for a KI 100 and share the wings and landing gear between the two planes.

Thread Tools
Search this Thread

Contact Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service -

Copyright © 2024 MH Sub I, LLC dba Internet Brands. All rights reserved. Use of this site indicates your consent to the Terms of Use.