DA told me it was fine to break in on a 23x8 Mejzelik (I needed a bigger, CF prop to balance). They just said no extended verticals and no extended hovering for a while - "It'll do it, it's just hard on the engine" was what they told me exactly.

Only other prop i have is a 20 x 8 i dont want to buy another prop there expensive sh@$s all i am going to do untill 5 gall through is get use to the plane no hovering yet got to grow bigger balls i most probley do pattern flying untill run in what your thaughts

The 23x8 should be ok for break in. With the engine on my Ultimate I used a 22x8 bolly ($34 "from memory" from howie) I did change to a 23x8 bolly after break in and it liked it alot. But I busted it after a nose over on landing. I've gone back to a 22x8 bolly which seems better suited to 3d flying (spools up faster). Try not to hover for the first few flights but after a few flight you can but keep them short. I didn't hover for more than a few seconds until about the 5th litre of fuel. Also if you are flying IMAc or pattern type stuff use different throttle setting (not just on and off) use the midrange as well to help bed the ring.

If you haven't already tune for max rpm on the high needle and back off 200-300 rpm, then set the low end for good tranistion. Once you do that you should be close. As you run more fuel through just tweek booth needle slowly until the midrange burble is gone. Then you should be sweet and have a very reliable engine.. Love me DA....

Well i had a fun day not .
took plane today for first fly with the da had to wait 2 hrs for the fog to dissapeer .\
finaly took off it was really nice flying around for 6 mins just taking it easy then i was going to land but on the turn i had stick back at idal the the motor started reving up to half throttle the then cut back after i was past the feild i started to go again then it did the same thing so the third time i cut the inginition to stop the engine it took 2 seconds before the engition stoped HMMM then on landing i was comming in fine then had a sudden wind change she droped maday maday maday mayday i got enough speed but had a hard landing the landing gear was nice to do the splits saving the plane from major structial damage but the f$%king muffler touched the ground at broke the engine firewall front peice off no damage to muffler cowel nothing it look like a blessing in desguise the ply on the fire wall very week tomorrow i will reienforce the firewall and maybee fibreglass it .
BIG QUESTION CAN I CUT THE MUFFLER SHORTER WITHOUT PROBLEMS

HERE ARE SOME PICS OF THE DAY

i found out why it was picking up in revs it was neally out off fuel and air was sucked up so it was going lean
rusty u had one of these what and how did u set yours up yours . as it burbled a lot like its rich in the air at mid throttle full seam to be fine

you flew for 6 mins and it ran out of fuel,you must be running real rich or you have a hell of a small tank.

Sorry to hear of your iccedent. Hope the plane is ok..

I started at the factory settings, ie. What the manual says for both needles. Started the engine let it warm up at a high idle for about 2min. Open the throttle and put the tacho on it. check the reading and shut the motor down. Wind the high needle in an 1/8th of a turn and re-check rpms. Do this until the rpms peak and then back of 200-300 rpms. Next is the low needle. once the high end is set start the engine and let it idle for 30 sec. Then quickly open the throttle. If the motor sags it is lean and you need to open the low needle. If it coughs or burbles it is rich and you need to close the low end. Alway adjust the needle in small increments. The factory low setting should be close. All you are looking for to start with is a smooth transition. If it doesn't sag or cough leave it. Go fly the model and at these setting the motor should have a slight burble in the midrange. This is good for break in. You don't want to go to lean. fly 5-10 flights on the intial settings then every 2nd to 3rd flight after that tweak the both needles 1/16th of a turn. Be sure to check the transition before flying. The midrange burble should slowy disappear and the engine should begin to feel stronger. Once the burble is gone recheck the rpms and peak the high needle for max rpms and lean the low end until it motor sags on transition. Then richen the low end until it transitions smotthly again. Then go fly until you have burned at least 10 litres of fuel (it took me about 10L of fuel just to tune out the burble) then switch to synthetic oil retune as previously discribed and go fly.

I am running a 20oz tank in the ultimate and get about 20min of flight time set a timer for ten min land and check the fuel load and work out from there how long you could fly for. Personally I fly for 10min as that is when I start to loose concerntration.

PLANE OK just the front plate of firewall broke neally fixed there not that strong able to glue back on but i am going to reinforce it there was no other damage if the muffler was not sitting out so far i would of had no dammage

tank is 16oz to might look at 20 oz

The instructions from WH say at least a 24oz with the Da-50. ..

Here are a couple pics of my partially finished cockpit. I got the cockpit from www.wrightrc.com. It is very nice!! The pilot fiqure is from litepilots. I made the dash from 1/16th and 1/8 balsa.

Scott

BOX IS FIXED now fibreglass and 3mm renforce sides and top it should never break again.
go and fly again tomorrow

I ENDED ip cutting the muffler da said u could but no more than 2" heres pic of fixed and new muffler


going flying tomorrow hope to have video

Well i had a interresting day went to feild today did what u said rusty all seamed good went up did a circut then the engine stoped no reason had a scary landing the expo on my radio was way out on elevator neally stalled it just got on the ground phew no damage .
looked for why it stoped took off the relay for ingition tryied to start then what the heck idal at 4000rpm cant drop turned battery off . looked at throttle servo i put in butter place started again same thing then it would just cut out pulled choak it fired again the terned of choak it fired normal idal strange then whent to rev it just cut out hmm then i notice some bubbles in fuel line so i got the fuel pump and tried to pump fuel out bingo found the problem the line and clunk had come off in the tank fixed and put back started all good it purred nice again and transition good . Thanks Rusty your advice was dead on .
Put cowl on and restarted took off and landed 3 times its got some power unlimited vertical plane weighs 8kg after mod to firewall it was really nice to fly .
plus with the muffler cut i notice no noise change .
i have video off the first flight only mates camera as mine dead i wil post it later.

WELL HERES THE VIDEO DONT LOL BUT ITS 3GRAND FLYING READY FOR A PRANG THIS IS DEADSTICK LANDING AND ELEVATOR WHEN PAST 1/4 DOWN WENT TO NEALLY FULL
http://media.putfile.com/Extras-Lucky-Escape

No worries mate glad it is going well now. You will love the DA. I have ordered my second one for the new extra should have it soon.

iam just lucky today that i had the chance to see what this motor can do
I WOULD RECONMEND A DA EVERY TIME NOW ITS GOT THE BALLS for this plane

You do realize it was probably tail heavy without the cowl don't you..?? but nice flight anyway..getting it down in 1 piece is always the prefered order of bussines..take offs are optional..landings ain't..

Check

Took the words rite out of my mouth... Glad you got it down in one piece!

no ballance was ok to the markes with cowl on its nose heavy .

Thats good..I was not giving you a hard time..it's just that the cowl weighs 8.5 oz. which can mean the difference sometimes...ha..how much throw do you have on the elevators and ailerons..??

Check

DEADSTICK LANDING AND ELEVATOR WHEN PAST 1/4 DOWN WENT TO NEALLY FULL DEFLECTION someone must off played with expo the total movement was 1 1/2 inch up and down on low rates .
i see how you think cg was out now by the take off the elevator trim was out i adjusted and centered several times

HUH???? what did you just say???[sm=confused.gif] Do you have spell check?

SRM, could you post some pics of the Inside of your plane? Like the electronics...batts, fuel system?

ok but it will be later as on my other computer