RE: THE NEW CERMARK F-16 BUILD IT BETTER, STRONGER, AND FASTER!!!

RE: THE NEW CERMARK F-16 BUILD IT BETTER, STRONGER, AND FASTER!!!
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RE: THE NEW CERMARK F-16 BUILD IT... - 7/1/2008 3:14:13 AM

LUDS96

Posts: 413
Joined: 10/16/2002
From: East Haven, CT, USA
Status: offline

Spinning an 8 pitch up to 20,000 should move it out. Using my formula it comes out to 151.52 Let us know how it goes

It's never fast enough More's law applies If some is good more is better

Revver 52

(in reply to lalo)

Post #: 1576

RE: THE NEW CERMARK F-16 BUILD IT... - 7/1/2008 3:34:45 AM

gsoav8r

Posts: 211
Joined: 1/17/2002
From: Huntersville, NC, USA
Status: online

NickelUp,
I agree with Luds comment that if you follow the instructions you would probably be OK. Though the instructions were not exactly written for newbies and wont hold your hand thru the build like GP or H9.
However, I think the real challange is how good are you at repair. Not having much experience building, Im guessing = not much experience repairing/fixing.
I would read back thru some of the landing gear repair jobs/modifications that have been posted and see if thats something you think you can tackle.
Im not trying to bash or put you off because it really is a fun airplane but it takes an experienced "heavy metal" pilot to not ding it.
Cheers,
James

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Revver Bro #202

(in reply to LUDS96)

Post #: 1577

RE: THE NEW CERMARK F-16 BUILD IT... - 7/1/2008 4:57:10 AM

KC36330

Posts: 2572
Joined: 4/19/2006
From: Enterprise, AL, USA
Status: offline

quote:

ORIGINAL: LUDS96

Gotta love that another $8.00 glow plug. ;<{ ) My 108 spit one once but luckily it was on the ground. You should retighten them when the engine is hot. Like we do with muffler bolts.

sounds like you're leaning out. blowing the plugs out of the hole is an indication the head is getting extremely hot.

as far as the assembly, my 5 yr old could put it together, it's quiet simple, IMO it's not classified as a fast plane either.

(in reply to LUDS96)

Post #: 1578

RE: THE NEW CERMARK F-16 BUILD IT... - 7/1/2008 10:35:20 AM

miklos

Posts: 195
Joined: 4/1/2004
From: Meriden, CT, USA
Status: offline

Hey Luds..... how you coming with your repairs? I should have mine ready to go this weekend. The epoxy dried overnight on my newly fabricated mounting plates and I got the front gear installed last night. All that's left is to mount the two main gears and reconnect the pressure lines.
Hope to have the P-47 ready to go too. Balanced her over the weekend and now I just have to break in the engine with a couple of tank fulls.
See you at the field.

Mik.

(in reply to KC36330)

Post #: 1579

RE: THE NEW CERMARK F-16 BUILD IT... - 7/3/2008 2:19:01 AM

phjoker

Posts: 370
Joined: 9/20/2005
From: Vernon, NJ, USA
Status: offline

Man I think you guys jinxed me!!!! I hade 5 great flights the other night. On my laast
flight landed like every other time but this time the front gear just folded like a book

the front gear mounts snapped. and I had them doubled already.
Oh well gotta fix it and get back in the air FAST!!!!!

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Revver Bro #157

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Post #: 1580

RE: THE NEW CERMARK F-16 BUILD IT... - 7/3/2008 3:19:18 AM

LUDS96

Posts: 413
Joined: 10/16/2002
From: East Haven, CT, USA
Status: offline

Hey Phjoker. Look at the pictures in my recent post. I put a complete piece in the center of the nose. 8 screws. Seems to be holding up!

(in reply to phjoker)

Post #: 1581

RE: THE NEW CERMARK F-16 BUILD IT... - 7/4/2008 1:47:50 AM

phjoker

Posts: 370
Joined: 9/20/2005
From: Vernon, NJ, USA
Status: offline

I like that, but I can't use the solid piece for the nose gear. I had so much play with the stock nose gear that I yanked it
out and replaced it with a spring-air gear and a dreamworks trailing link for the nose. PERFECT match for the grass runway.
I just got done beefing it up a little bit more.Have to see what happens next week.

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Post #: 1582

RE: THE NEW CERMARK F-16 BUILD IT... - 7/4/2008 6:09:36 PM

msweeten

Posts: 46
Joined: 5/12/2005
From: Escondido, CA, USA
Status: offline

One of the main problems peaple have with this plane is that the engine leans out and the landing gear breaks.
I have the version #2 f-16 and found that the wood was sub par to say the least. As part of the the build you should ether take out the original gear support wood, trace it on some good strong ply and replace it or double up the wood. This seems to be true on all versions of the plane. Replacing the wood is the best because of weight and the original wood is just so bad.

The other major problem is that engines tend to leen out. This is due to two situations. #1, the tank placement is very tight against the frame that the engine is bolted to so you have a lot of direct vibration to the tank and foaming. #2 The spinner that comes with the plane is very out of balance for a high RPM engine and creates a lot of vibration. This makes for all kinds of problems like foaming, small screws backing out of landing gear etc. Do yourself a favor and use a good spinner. It's hard to find one that looks as scale as the original one but it just doesn't perform. Using two tanks and bubbles less tanks help as well but the main problem is the spinner. You can look back on this forum and find all kinds of references. Remember to look back at this forum it has all kinds of good info not just the last few posts.

P.S. make sure you check the head bolts if you spit a plug because they are probably loose as well.

Once thses problems are worked out the plane will perform well and reliably. It looks good in the air and is always fun to fly.

Good flying.

(in reply to KC36330)

Post #: 1583

RE: THE NEW CERMARK F-16 BUILD IT... - 7/5/2008 3:59:02 AM

Sparhawk

Posts: 398
Joined: 8/19/2002
From: Dartmouth, NS, CANADA
Status: offline

There is nothing wrong with the stock spinner. You just have to balance it. Don't expect any other spinner to be balanced either, from any manufacturer. It is just something that you have to do. It takes very little time to balance a spinner, and while we are at it, don't forget to balance the props. I have seen it too many times where people just bolt on a new APC prop and expect it to be balanced. This is just not the case. Balance the spinner and balance your props and you will not need to worry about foaming lean runs. I have no issues with my setups, and I use the stock fuel tanks. A little foam around the tank can help too.

So, before you spend money on new spinners, fuel tanks, etc, keep to the basics and see how it works.... you may be surprised at how well it works without all the fuss.

Spar

_____________________________

Oh great are the days my landings = my take-offs....!
Revver Bro #158

(in reply to msweeten)

Post #: 1584

RE: THE NEW CERMARK F-16 BUILD IT... - 7/5/2008 4:05:16 AM

LUDS96

Posts: 413
Joined: 10/16/2002
From: East Haven, CT, USA
Status: offline

I agree with Sparhawk. I'm running all the original fuel equip. I have a three line tank for filling and draining. Standard clunk tank in stock positon. Standard spinner. Tons of flight's no problems outher than retract problems. Which are easy to solve. Love this Plane

revver 52

< Message edited by LUDS96 -- 7/5/2008 4:06:20 AM >

(in reply to Sparhawk)

Post #: 1585

RE: THE NEW CERMARK F-16 BUILD IT... - 7/5/2008 7:15:16 AM

msweeten

Posts: 46
Joined: 5/12/2005
From: Escondido, CA, USA
Status: offline

The standard setup that comes with the plane are fine for some, however if you are having foaming problems than look to these issuse. The spinner that I recieved with the f_16 was way out of balance and I had a hard time to make it true. The paint was thick on one side or something. Cermark may have upgradded the spinners from version #2 because this was a common complaint. And YES always balance your props.

(in reply to LUDS96)

Post #: 1586

RE: THE NEW CERMARK F-16 BUILD IT... - 7/5/2008 1:22:47 PM

phjoker

Posts: 370
Joined: 9/20/2005
From: Vernon, NJ, USA
Status: offline

quote:

ORIGINAL: LUDS96

I agree with Sparhawk. I'm running all the original fuel equip. I have a three line tank for filling and draining. Standard clunk tank in stock positon. Standard spinner. Tons of flight's no problems outher than retract problems. Which are easy to solve. Love this Plane

revver 52

I also agree. If you are having problems with the foaming you can use on of these clunks from dubro
http://www3.towerhobbies.com/cgi-bin/wti0001p?&I=LXD741&P=0
I have theses in all of my two stroke engines and have no problems at all. My jett 90 has never leaned out
on me yet(knock on wood), and the retracts well that is anohter issue. Try and fly it off of a SOD farm

and see how they hold up thats what I have to deal with.

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Post #: 1587

RE: THE NEW CERMARK F-16 BUILD IT... - 7/5/2008 3:55:21 PM

sbrackets

Posts: 110
Joined: 3/28/2007
From: Simpsonville, SC, USA
Status: offline

Hey Guys
I maidened my Cermark F-16 yesterday off a grass runway provided by my local RC club.
Field conditions were pretty good, 92 degrees, wind was coming right down the runway around 10mph, and my nerves were on edge.

I had a nice take off and fly around session, didn't do anything special except a couple of rolls because it was the maiden flight.
The F-16 flew like everybody has said, like it's on rails, I could tell that my expo was set to mushy by the elevator response. I will remove some expo from the program next time.

Now for the bad news! My landing approach seemed OK , maybe a little fast, because I was afraid of stalling the Propjet, When I touched the ground my landing gear collapsed on me. The nose gear retract, and the right main gear folded up, not damage to the left main gear. Thanks to the muffler and the right gear holding the belly off the ground fiberglass damage was at a minimum. Mostly small cracks around the wheel wells.

That plywood Cermark uses is pretty week stuff, mine cracked like a Saltine cracker. I suggest to others to beef up the retract mounting plywood with something like Maple wood to secure your retracts too.

But I am hooked on the plane from this first flight, I will make my repairs and hope to fly her many more times. I knew going in to the maiden that the gear mounting plywood was a issue but I decided to give it a go anyway.

So now it's off to the repair table

Happy Holidays to all, Jim S.

(in reply to phjoker)

Post #: 1588

RE: THE NEW CERMARK F-16 BUILD IT... - 7/5/2008 4:32:59 PM

LUDS96

Posts: 413
Joined: 10/16/2002
From: East Haven, CT, USA
Status: offline

Hey Jim Congrats on the Maiden. Sorry about the gear. Welcome to the Club. After you fix the gear and get back up. Try flying it at high altitude and do some practice stalls to watch how it reacts and were it stalls. It is a very stable platform and will fly real slow with out stalling. So you won't have to come in hot. They don't slow down so you will have to set up your approach to be going slow enough to land safely

(in reply to sbrackets)