Got my DL yesterday. Worked a couple of hours last night to install and cut cowl. No bolts supplied for mounting standoffs to firewall, so I used the ones suppled for mounting engine to standoff and will pick up needed hardware (metric) today. I will try and post some pics of my install later. I am really pumped. This is my first gasser and it looks beautiful.

Quick question--I take all the bolts out of new fourstroke glow engines and re-install aflter using a little loctite. I never really paid much attention to torque, just tightened them up "good." Would any of you recommend this for the DL or am I just wasting time?

Yes use loctite. I use red personal prefrence.

Stewaustralia,
I wonder if some of the motors coming directly out of Hong-Kong are the ones that didn't pass quality control? It seems that most of the problems come from the engines that are not pruchased through one of the distributors.
Just my thoughts from your comment on the bearing fit.

My DL50 is currently waiting on the plane to be finished. I will post my expierences with it once it's installed and running.

you know what I think you maybe on to something there I knew there was some reason only a few motors are under the flag ane if you go back they wher the ones from some where else

That is very posible, my engine was the old style engine with box section motor mount and thinner engine mount ears, it may have also been as you say rejects of some sort?. I would not bie a engine from over seas now but at the time there were no sellers in Australia, now there is several. I also contacted the Hong Kong seller but he never replyed to me so thats it for him. Apart from the outside changes to the engine I suspect that there are inside changes to the engine as well, when I get my new conecting rod I will no for sure but from the picture of the new part the connecting rod does not look to have any or as big a slot in it and as the rollers were cracked in between the slot maybe they realised the problem and changed the design so the later engines may never have this problem. When I get my new parts I will compare the new and old and put a picture up here and also if there is any problems with the rebuild if the parts are slightly different. I am looking forward to getting this engine going again and having many happy hours flying.

OK ------ now the new parts have arrived and some comparison pictures, there is indeed a slot at either end of the new connecting rod and it apears to be exactly the same in shape and size. the only difference that I can see is that they have lightened the conecting rod by removing metal and on my old rod at each end there was no machining accept for inside and on the new rod they have machined the outside as well and they have put a peval on the outside lip at either end.

Stew when did you buy your motor? I bought mine last September. I was just wandering if my motor has the old crank.

I bought it about mid 2007 but mine from Hong Kong could have been old stock or rejects or something, if you got yours in the US it is probibly OK. I will confirm and document any changes to the inside of the engine when I receive my new parts but I would not get to worryed about it as if your engine is out of warinty and as long as we can get parts they are quite cheap and no more complicated than a glow engine inside you can have a new engine inside for around $100, thats new crank, bearings,connecting rod, piston, ring, gasket set, the conecting rod with big end bearing and conecting rod all come as one part so if the big end bearing goes as mine did you replace the hole crank assembly not just the bearing this hole assembly cost me A$44 . and mine may be the first and only one for this to happon to. As Bob said if it developes exesive play when you rock the prop back and forth (Mine was a good 10 - 15 degrees of slope at any angle) at all 360 digree positions not just at top dead centure as some play here can be normal - my engine was very evident that something was rong and really ratily then stop using the engine or you will have a majour falure shortly after. I hope I have not got every body parinode about there engines, honistly it will stick out like Dogs balls if you get this problem so if you are not really sure then the engine is probibly OK, a few people new something was wrong with my engine by the way it sounded, thats how noticible it was both on the ground and in the air. Go fly and have fun.

Just curious, what kind of oil where you using and at what ratio? I'm not trying to imply anything, just gathering info to make an informed decision. I'm using Amsoil at 80:1 to 100:1 and I have already decided to change oils. I may just go back to my Poulan Chainsaw oil at 40:1 the pre-measured cup built into the bottle makes it so easy to mix the gas. Although any oil with castor will make an engine more resistant to "sticking a piston" I think it makes more carbon. Trying to figure out what synthetic I should use. I might see if Penzoil air cooled is available locally and just run it at 32:1

Hi Bob,

Got my DL engine in yesterday and it looks super Im pleased with it at this moment, I do need shorter standoff to fit this engine in my GP Christen Eagle, I need them to be 2 1/4 long and I havent found a vender that has a good stock on these, So I hope you might be able to help me,

Let me know
Many Thanks
Butch

Nice standoffs and the price is right. They only go up to two inches but you can add the little extra with fender washers.
http://www.espritmodel.com/index.asp...OD&ProdID=5429

I ran the engine in on lawn mower oil at 32:1 and put about 2 gallons or 5 l through it then switched to Castrol TTS full synthetic motorcycle oil at 40:1 but when I get the engine back together as it has a new ring and piston I will re run it in for a while but will change my synthetic oil brand as the castrol did not save the bearing, not sure what oil I will use yet?.

Hey Richard,

Many Thanks for the site, I place the order with them should get them early next week,

Stewaustralia....What is wrong with the Lawn Boy ashless that DL recommends for break in??

Greg

Nothing is wrong with lawnboy and if I could bie some here in Australia were I am I would use it but I think the stuff I bought is similar in that it is a patrolium based oil and not a high quality synthetic oil so that it will bed the piston ring in more quickly and not glaze the cylinder head during run in, anyway that is my understanding of it but I am no exspirt but I am sure others are fare more quolified to coment on this.

I know that I am still running a little rich, so I plan to lean the low end needle this weekend. I am getting a lot of carbon on the bottom of the plane. Is this normal? Again, I am using Lawnboy 32:1.

Matt

Have alook at this. Are the Chinese knocking off themselves now? This sure looks like a DL. http://www.rcuniverse.com/magazine/N...roduct_id=2556

Stew i am no expert by no means,but i don't think your oil is the problem.your not the first one to have the lower end wear out before it should. i think it was the bearings that are bad,it's a new engine and like all new prouducts they need to get the problems work out. DL has been listening to complaints and are improveing as they go (more beefy engine lugs,better stand offs). keep us informed about the engine after the rebuild.

Yep,isn't capitalism GREAT! works everytime it's tried.

I know this has been discussed before in this or the old DL threads, but I can not get the RCU thread search to work.

I have just got a new radio (the Australian version of the 2.4g 9303) that has a throttle curve feature. I know that every engine and setup is unique, but could somebody give me some rough settings so that I can start setting the engine up to get a more linear response from the throttle stick?

Cheers
Pupmeister

First you want to set both the high and low side of that channel to 100% and then go as far out on the servo as you can to keep the 100% and then set up throttle curve or expo for that channel starting at about 30% and adjust to suit your style of flying.

Thanks for the pictures, they are worth a lot.

Got another flight on my Dl today all total i have about 50 15 min flights all seems to be very good. The only problems i have had is with the exaust cracking around the weld and up the side but BOB at DL USA has replaced. Great service and for now I must say great engine. I also have put on the jtec wrap around pits and i did not loose any rmp, however i did gain a little weight but not a problem for my airframe.

Can i get the MTW header and can designed for the DA50 and use them with this motor?

Cheers

I think so. A buddy matched up his K&S foa a DA to my DL and it appeared to fit fine.