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RE: KMP Corsair - 12/28/2008 10:13 PM   
vasek



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From: Prague, CZECH REPUBLIC
Status: online 		LDM, looks like Viking Cockpits site is back up & running if you're still looking for that F4U interior...

http://www.vikingcockpits.com/Product%20Catalogue.htm

V.

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RE: KMP Corsair - 12/29/2008 12:51 AM   
LDM


 

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Status: offline 		Thanks I do need one , I was thinking of building one from scratch , I just finished a imp scale Fw190 interior kit and virtually make 40% of the parts , so I starting to think it better to start with nothing

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RE: KMP Corsair - 12/29/2008 3:33 AM   
jdewolftx


 

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From: Flower Mound, , USA
Status: offline 		Unfortunately, that build article announcement has been there for some time. Hopefully it will come soon. I have already finished mine with one side working perfectly fine and the other experiencing a slight bind in the last few millimeters of retraction. You can lower the flaps fine but when you bring this side back up, you can hear the buzzing of the servo. If you just move the surface a millimeter or two, the buzzing stops. I guess it is just the magic of the curved bend that matters here.

Also, I put a YS 1.60 DZ in mine and I still had to add about a pound of weight in the nose to get it to balance properly. I am ready to maiden but am waiting for a little assistance with our warbird guy at the field. I have cranked up the motor a few times and I have no doubt that it has plenty of power to pull this baby around.

Finally, one other note, I am not coming in as heavy as some of the others. My weight has come in around 14 pounds. I have read that many were coming in at around 16. I should maiden in the next week or two. I let you all know how it goes. I am currently living in Singapore so weather is not really a factor here (85 to 90 degrees all year round).

-Jeff

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RE: KMP Corsair - 1/11/2009 10:42 AM   
jdewolftx


 

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From: Flower Mound, , USA
Status: offline 		Maidened today.

All in all it went pretty well. Had a little mishap with my nose weight shaking loose and had to do a quick field repair. Once this was fixed, decided to hit the gas and take it up. The plane took off fine but as this is my first larger warbird, I underestimated the right rudder requirement. The plane yanked left on take off but I had enough speed to climb quickly and get myself out of trouble. (using a YS 1.60 DZ) After several laps around the pattern, the plane was trimmed out and flying quite nicely. I would say that it wasn't too taxing. It didn't fight you the whole way. It got in its groove and with the suggested throws and CG, wasn't overly sensistive. After a good 7 minutes I started to come around for a few passes to get ready for landing when all of a sudden....dead stick. I knew this could happen but it is another thing when it happens on your maiden. Brought the plane around, kept the nose down and was able to make a 60 degree turn to get in line with the runway. It would have been perfect except that I pulled up a little too early. Luckily I had enough space to tip the nose back down and I just ran her a little hard into the gear. The nice thing is that the retracts snapped at the wire and the retracts didn't pull out at all. The whole plane was fine and the bottom looks a little bit more scale with a few grass stains on it. :-)

Upon opening it up, it was clearly a rookie move in that with all the fiddling I ended up doing, I forgot to refuel so I probably went up with a 65% full tank. A good lesson with minimal consequences. I fly extra's and yak's but this is definitely a whole new world of flying. All in all, a good day.

-Jdewolftx



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RE: KMP Corsair - 1/15/2009 8:30 AM   
f4u19


 

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From: lake forest, CA, USA
Status: offline 		any flights yet

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RE: KMP Corsair - 1/16/2009 11:43 PM   
blue77



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Status: offline 		Anyone got pics of the KMP Gen 5 retracts and how they were installed? Thanks WC

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RE: KMP Corsair - 1/17/2009 1:07 AM   
Tisoy909



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Status: offline 		f4u19,
I still haven't gotten the chance to take her up yet, been tied up with so many things unfortunately, when i will be able to i will PM you.
Thanks.
Louie

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RE: KMP Corsair - 1/24/2009 10:51 PM   
alanc


 

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Status: offline 		Today, Martin, one of the YT guys, had a test flight with the corsair, well, what can i say? it was nothing else than superb, full report over on r/cfliers forum, model was built out of the box, with kit parts, flaps set up as per the destructions, and worked like a dream, now then, WHERES MINE!!!!!

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RE: KMP Corsair - 1/26/2009 2:52 AM   
captainron



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From: PUEBLO WEST, CO, USA
Status: offline 		ALRIGHTY THEN!!!!!

Someone's alive and kicking on this deadbeat foum. LOL! JUST KIDDING!!

Got a call from KMP on the 22nd of Jan. letting me know the Corsair I had ordered clear back in Oct of 08 was in customs and as soon as it cleared, it would ship to them and they would ship it out to me the following week which would've made that last week. I'm thinking Monday or Tuesday I'll have a new project to get ready for spring.
Alan,
Thanks for the udate on the successful maiden, I'm gonna go and see the details on the other forum.

LETS' GO GUYS, LETS' GET THIS FORUM ROCKING AGAIN!


DANG! I LOVE THIS HOBBY........................................................CAPTAIN RON

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RE: KMP Corsair - 1/26/2009 5:41 PM   
f4u19


 

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Status: offline 		I also should be getting mine in a couple of weeks. That should fire things up with the two of us building at the same time.

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RE: KMP Corsair - 1/26/2009 5:59 PM   
captainron



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Status: offline 		f4u

Thats what I'M talking about! Hopefully we'll get a bunch of Warbird fliers building theirs at the same time. Thats when a lot of good information get shared and everyone prospers! I'm looking very seriously at the Brison 2.4 for engine of choice but no final decision untill I get her on the bench and scope it out. I know a wide aray of engines have been talked about on this forum, including the 2.4 Brison, the 170 Saito radial, the G-38 Zenoah and a number of others.

Lets here from some of you guys again that have been building one and possibly have that maiden done. What engines, radio, setups are working. Some pics would be nice. YES! I've read all 12 pages of this forum. I'd like to see about 50 more pages in the next few months.

Alanc,
Would you please post the web site where martin has the details on his maiden. I wasn't able to find it. Thanks!


DANG! I LOVE THIS HOBBY................................................................CAPTAIN RON.


< Message edited by captainron -- 1/26/2009 6:00 PM >

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RE: KMP Corsair - 1/26/2009 6:02 PM   
f4u19


 

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Status: offline 		I'm with you lets see what we have on the bench and what works in the field.

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RE: KMP Corsair - 1/26/2009 6:03 PM   
drifter



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http://www.rcmf.co.uk/4um/index.php?PHPSESSID=0n28hhbtathedji3n8bir1jcr6&topic=64603.60

quote:

ORIGINAL: captainron

f4u

Alanc,
Would you please post the web site where martin has the details on his maiden. I wasn't able to find it. Thanks!


DANG! I LOVE THIS HOBBY................................................................CAPTAIN RON.




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RE: KMP Corsair - 1/26/2009 6:23 PM   
Evil_Merlin


 

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From: Medford, MA, USA
Status: offline 		For those asking about the Gen5 retracts... beware.

My initial look at the gear was positive, until I actually started working with the gear.

They are a waste of money that could bet better spent on Shindin or Sierra gear, for around the same price.

http://www.rcuniverse.com/forum/m_8258308/anchors_8258308/mpage_1/key_retract/anchor/tm.htm#8258308

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RE: KMP Corsair - 1/26/2009 6:32 PM   
Tisoy909



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From: Redlands, CA, USA
Status: offline 		I think I will have to agree on that one. This is my first time using pneumatic retracts and damn did I learn the stuff through and through already. Is it normal for retracts to make a loud clicking sound before it begins its' cycle? It sounds almost as if things are getting hung up inside the piston or something. I mean it was so bad that I had to completely omit the retract speed valve on the gear valve to use all the charge tank pressure. Otherwise the retracts will just about never deploy even with 130 psi in the tank. So now i'm left with a full bang open or a full bang out closed where i can get about five cycles. I always thought retracts should be smooth closing and opening, and docile enough that I can actually control the rate the gears would deploy and close. I was warned by all the people at my field about using the kmp valve hardware. I also opted out and got robart air lines as well. hopefully I will buy real retracts the next time around. How much are the sierra retracts for this Corsair anyways?
Thanks.
Louie

< Message edited by Tisoy909 -- 1/26/2009 6:43 PM >

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RE: KMP Corsair - 1/26/2009 7:25 PM   
Evil_Merlin


 

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Status: offline 		Louie,

No, I don't think its normal to make that noise. The valves that KMP includes are trash. Nothing more, nothing less. I really don't understand how more people are not complaining about these retracts, the struts are too soft, the attachment point for the struts into the retracts has far too much slop, the hex screws used are so soft the included wrench strips them, and on and on...

Sierra doesn't have the Corsair stuff for the KMP listed on his website. I woudn't assume to guess pricing.

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RE: KMP Corsair - 1/26/2009 8:17 PM   
captainron



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From: PUEBLO WEST, CO, USA
Status: offline 		Thanks drifter, went there and found that I had put that rcmf group in my favorites. It sounds like a very successful maiden by a very accomplished Warbird jockey. I ordered the stock Gen 5 retracts but I'm not sure I did the right thing now. I saw them at the Chicago Hobby show in Oct of 08 and they looked awesome to me. Andrew, (owner of KMP) assured me they had been updated and made stronger for the work load required of them from the Corsair. I GUESS I'LL FIND OUT! I'll go with them until I find out otherwise. I read Louie's post about the problems he's having and I'm not encouraged. I can tell you, if their not up to the job, I will return them to KMP for a credit and go a differant direction.

The plane should be here this week. I'm on the road for the next three weeks, (one of those traveling salesman) so I won't even get to see it until mid Feb. DANG!

Martin,
If you're reading this forum, CONGRATSULATIONS! YOUR OUR HERO! Are you using the stocks retracts?


DANG! I LOVE THIS HOBBY............................................................CAPTAIN RON.

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RE: KMP Corsair - 1/27/2009 12:02 PM   
kinverflyer


 

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Status: offline 		It is unfortunate you have a bad experience with your ESM (KMP) retracts, I have be using using these and earlier versions for years very sucessfully and in models far exceeding the retracts design parmeters. If you have a problem with them it is always worth while discussing them with your supplier.

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RE: KMP Corsair - 1/27/2009 1:31 PM   
Tisoy909



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Status: offline 		kinverflyer,
True, I can give KMP a call about my problems with the landing gear but honestly what can I expect, at best for them to replace it with another set of gear with the same issues. The gear is either private labled or non-private labled for KMP regardless. the problems with the equipment lies not with KMP or YT on your side of the pond but the manufacturer and pretty certain this is going to be Asia and therefore a rather hopeless issue on my end if im after quality in any reasonable time frame. Who suffers is yours truly then ultimately KMP & YT. I was in the import auto accessories business for years and quite familiar with having junk from China private labled for me in the past. So when I was confronted with these gear issues I was only left to grin as this wasn't wholly new to me. Stated a few posts back, there's just too much slop in this rotating gear and this aside from the fact that my gear has this tendency to get hung up before both cycles open & close. These are what I would call quality issues as I haven't flown the plane even once yet. But I did buy it, and have to deal with it now. I would like to have not bought the gear of course but as someone else said in RCU about buying it, "consider it a $275 dollar lesson" I should have read up on the reviews before hand. It is great to hear that someone else has been using KMP gear free of problems however, and years for that matter, but I am convinced there is a catch when I read that. I mean after all there has to be a success story otherwise they might as well not even sell the stuff right. Fact is, I have come across more discontent of the product in this RCU forum than praise unlike Shindin and Sierra gear for example, and I believe they are still on their 1st generation, not their 5th, lol.
Louie

< Message edited by Tisoy909 -- 1/27/2009 2:46 PM >

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RE: KMP Corsair - 1/27/2009 3:07 PM   
BigRetracts-RCU



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Status: offline 		Tisoy909,

I could not have said it better myself.

How many years are the ARF modelers going to accept poor quality in there retracts until they just say "Enough is Enough"
China is still in the 40's and 50's with their knowledge of manufacturing.
They may have some modern equipment, but just don't have the practical experience.

I would guess their designs are based more on the pricing, not the actual reliability.


Darrell
Sierra Gaint Scale

< Message edited by BigRetracts-RCU -- 1/27/2009 4:42 PM >

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RE: KMP Corsair - 1/27/2009 3:23 PM   
Tisoy909



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Status: offline 		Darrell,
You are right, their designs are based on pricing, which is great, if you are kmp or yt. Problem is the advertising is based on quality which isnt so great, if you are the consumer.
Louie

< Message edited by Tisoy909 -- 1/27/2009 3:25 PM >

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RE: KMP Corsair - 1/28/2009 6:15 AM   
captainron



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Status: offline 		OK guys, this is great stuff. Sharing information and experience is what these forums are all about. I've been a Robart fan for many years and have always been very happy with the quality of the product and their awesome customer service. This wil be my first experience with another brand of pneumatic retracts. I know Andrew (owner of KMP) fairly well and I really believe, that if these retracts were junk, he would know by now and would be taking steps to fix the problems. The set I looked at while attending the Chicago Hobby show looked solid and worked flawlessly while in my hands. I should receive the airplane in a few days and will check them out first thing. I will report back to this forum with honesty and fairness in either respect.

NOW, on to another subject. I would like to go with a full cockpit and full bodied pilot instead of just the bust type. I went to the web site (viking cockpits) mentioned in an earlier post and they look great. Has anyone used one of these in this Corsair?

Louie,
I would atleast call KMP and discuss the problems you are having and give them the chance to work with you to make it right. My past experiences with this company tells me they are commited to haveing a quality product in the market and are eager to make things right if they are not. Give it shot!




DANG! I LOVE THIS HOBBY..........................................................CAPTAIN RON.

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RE: KMP Corsair - 1/28/2009 7:07 AM   
warks62



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Status: offline 		I have seen these gear in the KMP Skyraider at our field which I hear is the same gear just different length strut and they have been working flawless. They are just as tight or loose as a lot of well know gear manufactuers out there. Louie i would at least try another set and see if you just a bum set. Won't hurt to try don't you think. By the way why did you pay $275 when they go for $230 with everything including aluminum wheels? Just wondering hope you get it sorted out. By the way I have used KMP gear before and yes I felt it was junk but that was before the Gen 5 came out and felt that they looked pretty good at least for the price but that is just me.

But another note I wish there were more of these being posted on how they fly more than anyhting else.......How about some video?

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RE: KMP Corsair - 1/28/2009 7:48 AM   
f4u19


 

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From: lake forest, CA, USA
Status: offline 		I have seen the retracts having a hard time deploying while flying. Unless you slow down to all most stall speed with out the gear doors on. I have also heard to use Robart air systems and valves and not the KMP. Robart said that their 800 series is still six months out

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RE: KMP Corsair - 1/28/2009 4:02 PM   
jdewolftx


 

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From: Flower Mound, , USA
Status: offline 		I have been flying my corsair the last few weeks and I have the KMP retracts. They work fine but the quality is definitely not there. I have a lot of slop in my mine and they rotate a bit even while secure to the strut pin. This is ok unless you hit some higher grass. This happened once with me and the wheels towed in and it flipped the plan over onto its tail. The plane held up ok. The good news is that I had one deadstick landing and it hit hard enough that the stut pins simply broke off rather than ripping the gear out of the plane. I do not believe that this is a designed weak point but the effect really save me a bunch of repair work. For me being new to heavy warbirds, the less than perfect gear is maybe not so great (lots of rougher landings), however, I believe if you don't abuse them, they probably would work fine.

Incidentally, the plane does fly nicely. I really started putting it through more maneuvers the other day and it really rolls nicely and is not overly sensitive. And as I said, I have had a few rough landings and the plane holds up pretty well.

-jdewolftx

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