RE: Peakmodel Extra 260 25%

RE: Peakmodel Extra 260 25%
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RE: Peakmodel Extra 260 25% - 8/14/2007 4:50 AM

fredstyle

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RoysterDW interior photos of my install... yeah went with the dubro tank due to the flat bottom. Made a small tray for the tank and

batteries went as far back as my hand would reach. Be careful when you mount the ign and rcvr switches so that the wings won't

hit them. Prob gonna do two rcvrs JR649's or one r2000 not sure yet...

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RE: Peakmodel Extra 260 25% - 8/14/2007 2:03 PM

rains_viola

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Fredstyle,

yup... that should balance the plane

Have you tried running the engine with the ignition battery at the back? Hope you don't get interference. I'll try to the same thing too to balance the plane. I'll test run this weekend.

Royster & nowinkk,

too bad I got the jeng feng plug. It works anyway. I have around 2 gallons flying my extra already. Flies great! but I need to do something about my CG.

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RE: Peakmodel Extra 260 25% - 8/14/2007 8:41 PM

fredstyle

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quote:

ORIGINAL: rains_viola

Fredstyle,

yup... that should balance the plane Have you tried running the engine with the ignition battery at the back? Hope you don't get interference. I'll try to the same thing too to balance the plane. I'll test run this weekend.

Royster & nowinkk,

too bad I got the jeng feng plug. It works anyway. I have around 2 gallons flying my extra already. Flies great! but I need to do something about my CG.

rains_viola-- would love to but tried to test fire the engine but no spark!!!

I think the ign is bad... even though it's one of the "newer" melody ones. Emailed peak about it,

hopefully i can just swap it out. Even with the batteries that far back it still needed 2oz's of additional lead. not so bad for how much power the motor is supposed to put out!!

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RE: Peakmodel Extra 260 25% - 8/14/2007 10:36 PM

gorcsew

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Hello Fredstyle!

I would like to ask you, how much will be the the wing load.
Wing area is: 62,7 dm2 [972 sq in]
What is your flying weight? [if possible in metric unit please]

Thanks

GorCseW

quote:

ORIGINAL: fredstyle
Even with the batteries that far back it still needed 2oz's of additional lead. not so bad for how much power the motor is supposed to put out!!

< Message edited by gorcsew -- 8/14/2007 10:41 PM >

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Post #: 129

RE: Peakmodel Extra 260 25% - 8/14/2007 11:09 PM

fredstyle

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Hi gorcsew dry weight looks to be about 10 lbs without fuel, i'm running a 12oz tank. haven't had a chance to fly it or finish the wiring to tidy up the interior

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RE: Peakmodel Extra 260 25% - 8/15/2007 4:35 AM

RoysterDW

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quote:

ORIGINAL: fredstyle

RoysterDW interior photos of my install... yeah went with the dubro tank due to the flat bottom. Made a small tray for the tank and

batteries went as far back as my hand would reach. Be careful when you mount the ign and rcvr switches so that the wings won't

hit them. Prob gonna do two rcvrs JR649's or one r2000 not sure yet...

Many thanks for the pics!!

It really helps me out.

Man you really know its going to be nose heavy when you those pics, scary.

Oh well just gotta deal with since we decided to go with the 40 instead of the 26.

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Post #: 131

RE: Peakmodel Extra 260 25% - 8/16/2007 1:10 PM

RoysterDW

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quote:

ORIGINAL: nowinkk

Roy, you may cut the corner of the box provided you reinforce it with an addition strut at the appropriate location like what i did. After adding the strut, it is wise to apply some sort of epoxy layer or fibre reinforced plastic to the entire engine mounting box for rigidity. I ve done mine this way and had flown the model for the last 2 months and nothing happened.

Got any pics of that cut out?

Just want to see how much space you left around the muffler?

I added the fuel tray today. Build is slow as I waiting on Futaba servos from Tower.

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RE: Peakmodel Extra 260 25% - 8/16/2007 1:12 PM

RoysterDW

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quote:

ORIGINAL: fredstyle

RoysterDW interior photos of my install... yeah went with the dubro tank due to the flat bottom. Made a small tray for the tank and

batteries went as far back as my hand would reach. Be careful when you mount the ign and rcvr switches so that the wings won't

hit them. Prob gonna do two rcvrs JR649's or one r2000 not sure yet...

Hey fredstyle, why didnt you place the batteries lower down to wards the belly rather than up higher?

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Post #: 133

RE: Peakmodel Extra 260 25% - 8/16/2007 6:22 PM

fct

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quote:

ORIGINAL: RoysterDW

Yep mine too, came with a Champ resistor plug.

Make sure you replace it with a resistor plug!

Has anyone got any pics of their internal bay?

I need to get some ideas how and where you guys are placing stuff. I definitely need to make up a couple of ply trays for gear.

Also did everyone use the stock fuel tank?

I have seen someone use a Du-Bro as it had a flat bottom. The stock does have flat sides but it wont slide under the wing tube. So I am wondering how critical it is to have it directly under that tube?

Hi There

Would like to jump in on this thread°! Bought the Extra 260 with peak 26cc engine!
Had my first, and so far only flight with it last Sunday! It was a short flight only about 3min. then the motor died and I had to come in as fast as pos.!!
To make a long story short! I ripped out the undercarriage and broke of half of the nose! :-( I think the motor was running to rich, but seeing that this is my first gas powered plane
I must say that I do not know exactly!

The plane is fixed again, just have to install the engine and some small stuff! Now my question -- Why should I replace the sparkplug? And what sparkplug should I use? Is the sparkplug that I got with the motor the wrong one? Could this be the reason why the engine died on the first flight?

I would be so thankful if someone could explain the reason for using a resistor plug etc.
Thanx in advance

FCT

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Post #: 134

RE: Peakmodel Extra 260 25% - 8/16/2007 6:29 PM

fct

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Here´s a photo of a coke bottle installed as tank!

FCT

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Post #: 135

RE: Peakmodel Extra 260 25% - 8/16/2007 7:03 PM

nowinkk

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quote:

ORIGINAL: RoysterDW

quote:

ORIGINAL: nowinkk

Roy, you may cut the corner of the box provided you reinforce it with an addition strut at the appropriate location like what i did. After adding the strut, it is wise to apply some sort of epoxy layer or fibre reinforced plastic to the entire engine mounting box for rigidity. I ve done mine this way and had flown the model for the last 2 months and nothing happened.

Got any pics of that cut out?

Just want to see how much space you left around the muffler?

I added the fuel tray today. Build is slow as I waiting on Futaba servos from Tower.

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Post #: 136

RE: Peakmodel Extra 260 25% - 8/16/2007 7:50 PM

Halogen

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To keep you updated. Just to let you guys know that you should re-enforce the undercarriage. My engine cut last sunday on my approach cause it was too lean, and made a hard landing. It maybe stalled 2 feet off the grass but just enough to tear the undercarriag off !!!

The plane is extremly lightly built for a petrol. I reiforced the inside with carbon fibre. Aloso very very very important REINFORCE inside the fuselage where the wing tube is. Look at the pic. The middle bit is the tank tray which I made out of carbon fibre

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RE: Peakmodel Extra 260 25% - 8/16/2007 9:26 PM

RoysterDW

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quote:

ORIGINAL: fct

Here´s a photo of a coke bottle installed as tank!

FCT

Nice

but why not just buy a Du-Bro tank since they are so cheap and nice and square?

Do you have any more pics of your build? (engine mounts, and gear placement)

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RE: Peakmodel Extra 260 25% - 8/16/2007 9:32 PM

RoysterDW

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quote:

ORIGINAL: Halogen

To keep you updated. Just to let you guys know that you should re-enforce the undercarriage. My engine cut last sunday on my approach cause it was too lean, and made a hard landing. It maybe stalled 2 feet off the grass but just enough to tear the undercarriag off !!!

The plane is extremly lightly built for a petrol. I reiforced the inside with carbon fibre. Aloso very very very important REINFORCE inside the fuselage where the wing tube is. Look at the pic. The middle bit is the tank tray which I made out of carbon fibre

Thanks for the important tips!

What kind of carbon fiber are you using? It looks like some kind of tape followed by epoxy over the top?

Also if you could give us some pics of the under carriage mods you made.

Yes, I thought about the LG on this plane and its a light plane with a heavy 40cc engine in it which equals lots of repairs if don't get the landings perfect every flight

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Post #: 139

RE: Peakmodel Extra 260 25% - 8/16/2007 9:40 PM

RoysterDW

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Decals -

ANyone using the "Extra 260" decals that came with the plane?

I personally thought they were crappy

and who wants a "ARF" (almost ready to fly) decal on their wing, so I am not using them but need to find some Extra 260 decals down the track after she get a few flights under her belt.

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RE: Peakmodel Extra 260 25% - 8/16/2007 10:39 PM

Halogen

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The carbon fibre Im using is a "ribbon" type which is cut to length then I soak it in finishing resin . Its light and strong. About the undercarriag I will post more pics coming days. the base (thick peace of ply wood )where the undercarriage bolts on, is actually strong. What is not that strong is where this fat peace of wood is glued at the fuselage. It is this place which you have to strengthen!

About the decals,,,they are crap and I have not put them on lol lol

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RE: Peakmodel Extra 260 25% - 8/16/2007 11:42 PM

fredstyle

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quote:

ORIGINAL: RoysterDW

quote:

ORIGINAL: fredstyle

RoysterDW interior photos of my install... yeah went with the dubro tank due to the flat bottom. Made a small tray for the tank and

batteries went as far back as my hand would reach. Be careful when you mount the ign and rcvr switches so that the wings won't

hit them. Prob gonna do two rcvrs JR649's or one r2000 not sure yet...

Hey fredstyle, why didnt you place the batteries lower down to wards the belly rather than up higher?

Thought about going lower, but the rudder wires were super close so decided to go higher

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RE: Peakmodel Extra 260 25% - 8/17/2007 12:01 AM

RoysterDW

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Ah thought that was the case

I guess I may have to go down that road as well.

So by doing that did the plane come in OK with the CG or was it still nose heavy?

I'm trying to get some info from Peak Model about the the guy who flew the Yellow Extra in the video on their site, as it has a 40cc in it as well and the guy from Peak says it is a friend of his. I'm trying to find out what mods he made to make that plane 3D so well.
If I find out I will post the findings here!

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RE: Peakmodel Extra 260 25% - 8/17/2007 12:22 AM

RoysterDW

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quote:

ORIGINAL: Halogen

To keep you updated. Just to let you guys know that you should re-enforce the undercarriage. My engine cut last sunday on my approach cause it was too lean, and made a hard landing. It maybe stalled 2 feet off the grass but just enough to tear the undercarriag off !!!

The plane is extremly lightly built for a petrol. I reiforced the inside with carbon fibre. Aloso very very very important REINFORCE inside the fuselage where the wing tube is. Look at the pic. The middle bit is the tank tray which I made out of carbon fibre

Just noticed your wing tube in the fuse is of what looks like fibreglass. Mine came with a cardboard toilet roll

So I mixed in some micro balloons with epoxy and painted it on the tube to give it some strength.

I dont want to over engineer this plane as I used to do on my electrics but I most certainly want to fix what the maker has overlooked. especially when theres a heavy motor bolted on the nose!

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RE: Peakmodel Extra 260 25% - 8/17/2007 4:49 AM

RoysterDW

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Where are you guys placing the throttle servo? Up front under the engine in the the tray intended for it?

I thought if I was to mount it further back then I would need longer control cable (or in my case Gold-N-Rod) and for the sake of a few grams of servo it wouldnt make that much of a difference to the CG?

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RE: Peakmodel Extra 260 25% - 8/17/2007 7:15 AM

fredstyle

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quote:

ORIGINAL: RoysterDW

Ah thought that was the case

I guess I may have to go down that road as well.

So by doing that did the plane come in OK with the CG or was it still nose heavy?

I'm trying to get some info from Peak Model about the the guy who flew the Yellow Extra in the video on their site, as it has a 40cc in it as well and the guy from Peak says it is a friend of his. I'm trying to find out what mods he made to make that plane 3D so well.
If I find out I will post the findings here!

Hey royster-- even with the batteries as far as I could reach still needed a little over 2oz of weight. Tthe stick on motorcycle wheel ones already have sticky tape on the back to mount it as well as you can cut it down to exactly the weight you need

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RE: Peakmodel Extra 260 25% - 8/20/2007 2:14 PM

theo63

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this carbon fiber ribbon that halogen was talking about does anyone know where to get this product,i am getting close to getting my engine mounted this week

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RE: Peakmodel Extra 260 25% - 8/20/2007 5:01 PM

stew007

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Well i've still not had a flight with my one yet! The problem is the Peak 26cc engine, It just refuses to run reliably, ive tried a new spark plug, new ignition, various 4.8v batterys, cleaning the carb screens, adjusting the metering lever, checked for air leaks, and every needle setting under the sun, It starts and now runs and even transitions good, but leave it idling for more than 2 seconds and it just dies when the throttle is advanced, thats with a 2000 rpm idle.

So I am fed up with it, I am not going to risk flying it, it's not worth crashing the plane over a duff engine. I am going to buy an OS 200fs for it, 2:1 power to weight ratio! and a lighter wing loading, should be mental.

Last night I hit another snag, I left my tx outside all night after spending hours trying to sort the engine

and it rained heavy! sods law. now it's looking like I'll have to buy another, more expense!! This plane is cursed I think

Hopefully I'll get this thing into the air before next year

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RE: Peakmodel Extra 260 25% - 8/20/2007 9:43 PM

RoysterDW

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quote:

ORIGINAL: stew007

Well i've still not had a flight with my one yet! The problem is the Peak 26cc engine, It just refuses to run reliably, ive tried a new spark plug, new ignition, various 4.8v batterys, cleaning the carb screens, adjusting the metering lever, checked for air leaks, and every needle setting under the sun, It starts and now runs and even transitions good, but leave it idling for more than 2 seconds and it just dies when the throttle is advanced, thats with a 2000 rpm idle.

So I am fed up with it, I am not going to risk flying it, it's not worth crashing the plane over a duff engine. I am going to buy an OS 200fs for it, 2:1 power to weight ratio! and a lighter wing loading, should be mental.

Last night I hit another snag, I left my tx outside all night after spending hours trying to sort the engine and it rained heavy! sods law. now it's looking like I'll have to buy another, more expense!! This plane is cursed I think

Hopefully I'll get this thing into the air before next year

Sorry to hear about your dramas stew. I havent started my 40cc yet (waiting on props and servos) and its the part I am a bit nervy about since hearing people have had probs, but at least I have a brother in-law who is a motor mechanic and also theres a great thread here on the SPE 40cc by Pianori that explains alot about these engines. A few things need to be changed IF its a dud and the main one is the carb which is very cheap. Maybe before you spend big dollars on a OS200 you might want to check that thread out

heres the link and good luck: http://www.rcuniverse.com/forum/m_3463908/mpage_1/key_/tm.htm

BTW go with the new JR 2.4Ghz radio or the Spektrum DX7. I have the DX7 and love it!

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RE: Peakmodel Extra 260 25% - 8/21/2007 3:12 AM

rains_viola

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quote:

ORIGINAL: fredstyle

rains_viola-- would love to but tried to test fire the engine but no spark!!! I think the ign is bad... even though it's one of the "newer" melody ones. Emailed peak about it,

hopefully i can just swap it out. Even with the batteries that far back it still needed 2oz's of additional lead. not so bad for how much power the motor is supposed to put out!!

I had 7 flights last sunday on my extra. enjoyed it very much. My engine flew ok with the apc 17x6 but was rough in midrange and had the popping sound from day one. Decided to re tune the engine. I came out with 1 5/8 on both L and H. ( peak 26cc ). 5th flight is still the same. I tried to put the clone 16x10 prop and was vibrating a little bit but tried to fly it anyway. Wow!!! made a big difference. popping sound was gone! flew very smooth and engine liked the lower RPM I guess and was very strong. Unlimited vertical with the chinese engine.

Anyway, crashed on the 7th flight hehehe.... engine quit after v1. maybe just about 15 to 20ft agl with strong headwind. uneven field ahead so needed to turn around. not enough altitude to do a 360 turn to face the strong wind again. Made a very hard landing tail crosswind ( wind pushing the plane down nose first ) . nose separated and landing gear separated again ( 2nd time ), left wing tip with little damage. still repairable and brought it to our local modeler to reinforce everything. I'll let the expert do the job and just pay him.... not too much anyway. hehe... My tuning I guess is a little bit lean on the high end or maybe because I forgot to run up the engine before take off and the engine maybe still cold.

I think it will be soooooper ballistic with you guys using the 40cc. little lead weight on the tail won't hurt with the power of 40cc. Pretty happy with the 26cc --- plenty of power
Only my ignition is up in front. throttle servo/ ignition battery is at the back already and my cg is at 130mm. little bit nose heavy with 2 clicks up trim. flies ok but the 133mm CG in the manual would be perfect.

Anyway, no glitching with the ignition battery/ switch at the back. Can't wait to fly again next weekend. I have a standby mvvs 26cc but I guess will be on standby for a long time or maybe just put it on another extra or maybe edge this time. I'm now happy with my engine!!! yahoo!

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