George

I think you may need to cut a bigger circle hole in the firewall in order that the carb will best fit but it is not too big issue. (of course if we are talking about the Sabach 342)
but i am not sure since i didnt install it yet and maybe i am wrong and if you add the 3mm wood spacers maybe you wont need to cut anything.

this what i am thinking also i think that mld 35 is very close in dimensions with the dle30 v2 so i dont think that it will be any issues at all and as i have understand it will swing 1'' bigger prop in the same rpm ... wich makes the differance i believe that the sbach will be a rocket with this engine,,,and from people talkin in other forums about our aiplane they complain for tail heavy ,,, that needs weight or to move everything in front...so the idiea of a little heavier motor + the more hp output i believe is the swet spot....now i am a little jelus because sdshobby will put in the market the new sbach 342 that is little longer in dimmensions (75'' wingspan and 73'' total length ) its just a little more but i am thinking if its so different like the night and day in flight charactics??? and why i am saying this ??? well sbach is like a new kid in the block different from the other airplanes (shape and maybe in perfomance envelope )so i can understand why a manufacture that makes a well airplane that other retailers sell it as ( peakmodel , redwing etc ) and fly well and also knows the constuction of the model ...stops it and produce a slight larger (2 '' bigger wing and 4'' bigger fussalge ) plane ???? WHO KNOWS the future will show...( IS LIKE TREX 450 AND TREX 500 ) OFCOURSE as i see in the picture of the model that is going to be ready in 20 september in the photos i see that in the tail ( that makes the distinctive curve of the sbach ) there is none or it looks like ( as the bigger sbach 50cc ) by the way they told me that the new can take dle 30 and mld35 !!!!! so i still have the plane in the box sell it and buy the new one???
heheheheh then i will need a bigger motor.... [X(][X(]

Hi George

I really dont know what to tell you of how it fly because i havent finish building it, it will be a while i guess..
I like the one that cyclone sell because it is well build, the covering is very good (monocote) and structure looks strong.
it is carbon version so some of the items are made from carbon to have it more light.
Did you check about the pricing for the engine ? where are you planning to buy it ?
please note that you have about 2 years warranty for this engine. and you need to make sure where ever you buy to get this warranty.
As for fuel, i use 95 unleaded octane gas that mixed with the recommended oil.

does this engine finally come with a pitt's style muffler as standard? I'm guessing not and if that's still the case then were can you pick up the better pitts muffler at?

HI SHADOW!! have you continue with the airplane ??? and the mount of the engine yet??
thanks again ... and if yes ,.. just put some pictures!!!

Hi
No sorry not much of a progress just drilled the holes lol...

Hi George

Since I have notice that you wait for my progress I have decided to mount the engine on my Sbach 342 so you will able to see how it is installed or fit.
Please note that I have added 3mm wood in order to have the engine go out a bit from the cowling and after this 3mm i have notice that it is only about 1mm to 1.5mm out of the cowling, so I guess that I will add additional 1mm spacer.

attached some pictures for your reference.

Hope it will help.

Shaddow.

wow ...very nice installation .....great!!!as i see it fits perfectly inside...and something else... everybody complains about that the airplane sbach 342 is tail heavy with the dle30 and that they have to put weight or the batteries all in the front and still the plane is in the tail side..heavy ...as you have see in the manual ...its says for the cg 5 1/2 '' that is far behind almost 1'' from the carbon tube and all are talking for a cg in the carbon or just behind the carbon ....( 12CM istead of the 13,7cm that the manual says peak model or redwing same airplane) this engine be heavyier but more powerfull will solve this problem
thats why i am very intresting for this engine!!!!!
THANKS SHADOW AGAIN !!!

Hi George

Yet i dont know how much weight I will need to add but I planning to install additional fuel tank close to the CG and a smoke pump. I am planning to install the smoke pump really on the front.
Also I have no problem to install the batteries (2 or 3 LIPO batteries) and the ignition also in the front.
I hope after all that no additional weight will need to be added.

Shaddow: nice pics. May I suggest where the posts meets the firewall (and the rear side)? I notice there isn't any baffling on the 2 air-intake above the cylinder. May I suggest that you place baffling to help improve airflow/cooling. Engine temp has a tremendous effect on performance. The more air cooling you can force the the air to pass over the hot spot. The better off you will be. On the top end, you can see a 10-18% difference. The current setup will Oh, remember to check for tightnes after each tank during the 1st couple gallons.

Luckymacy: For the next 2 months, we are not likely going to offer the rear muffler version for MLD-35. If and when we do, it will be offered as MLD-35R. The engine can be rotated in any direction to best fit your cowl! That is why the rear muffler is not as critical as it may appears.

note, we not yet ran into a case where there was an absolute necessity to use a rear muffler.


Peace,
Steve Chao,
CERMARK

Hi Steven

I didnt quote understand what you mean by buffling.<span style="font-weight: bold;">?

I have added some more pictures.

Also added pictures of my EDGE 540 that has the MLD 28CC installed. (and one picture of how it lookes when it is assembled from the manufacure site since I didnt yet have the chance to get pictures of my own)
I hope that with this folowing weekend I will finally have its test flight.



</span>

OK but don't forget about aesthetics - pitts style just looks better and more 'authentic' and i'd pay a little more to get it. Really, why should it cost a lot more when you are mass producing them. There's not that much more metal involved. I'm really impressed with what I've seen and read about the engine itself. Keep up the good work!

Sorry Shadow: I meant baffling....

In the N.A. MLD-35 Manual, there is a small Q&A section on baffling. Here it is;

"Q22. How important are cooling and baffling for MLD engines?

A22. Baffling is the technique to channel / direct all intake air over the cylinder head, thus forcing air to flow across the engine rather than bypassing it. This is a very effective cooling method on air cooled engines. Deflecting or baffling of the air to and over the cylinder is highly recommended for proper cooling. The idea is to get all of the cool air that is coming through the air intake opening(s) to hit the middle of the cylinder(s) directly, and then be forced over the cylinder(s), creating turbulent air moving through the cylinder(s) fins. The freely flowing, but directed and turbulent air between the fins provides the maximum cooling for an air cooled engine. Without baffling the air (similar to water property) will take the path of least resistance. Some incoming air will bounce off the cylinder(s) and the rest will escape around the cylinder(s) without coming into contact with the cylinder(s).

To ensure constant flow of cold air around the cylinder, and to reduce the air pressure build-up inside the engine cowl, the hot air exhaust exit must have a much larger cross section area than the cold air intake. As a rule of thumb, allow 4 times the area for exhaust air than intake air, this may be achieved by reducing the intake area (as in a radial type cowl) and expanding the exhaust area. Air entering the smaller cowl opening will expand and cool existing at a lower velocity, further aiding cooling of the engine."

Peace,
Steven Chao,
CERMARK

Hi Steven

Yes it is right, the cowl isnt finished yet and isnt cutted yet, it is just to show how the engine is mounted.

you can see with the EDGE pictures that there is enough cooling.

Here is an excert from one of our engine manual thanks to Roger Lee (Australia).

"Basic laws of physics
1. Air expands when heated. Volume of hot air is greater than the volume of equal mass of cold air.
2. Volume is an inverse function of density. Increased air volume reduces the air density.
3. Increased air velocity leads to increased air volume over a constant flow area.
4. Air will flow down the path of least resistance.
5. By the law of thermodynamics, because the temperature of air is always lower than the cylinder head of a running engine, heat will be transferred from hotter cylinder head to the cooler air.

Efficient Engine Cooling
Efficient cooling aims at transferring the largest amount of heat from the cylinder head to the largest amount of cold air surrounding it. The most effective method is called Baffling. Baffling is the technique to channel / direct all intake air over the cylinder head, thus forcing air to flow across the engine rather than bypassing it. This is a very effective cooling method on air cooled engines.

To ensure constant flow of cold air around the cylinder, and to reduce the air pressure build-up inside the engine cowl, the hot air exhaust exit must have a much larger cross section area than the cold air intake. As a rule of thumb, allow 4 times the area for exhaust air than intake air, this may be achieved by reducing the intake area (as in a radial type cowl) and expanding the exhaust area. Air entering the smaller cowl opening will expand and cool existing at a lower velocity, further aiding cooling of the engine

Cooling for Various Engine Configurations
Type 1 – Scale model of planes powered by radial engine. E.g., Corsair F-4, FW-190 (see pic)
Type 2 – Scale model of planes powered by liquid cooled engines. E.g., Mustang, Spitfire. (this is what Shadow has)
Hint: use a baffled intake below the huge spinner to redirect airflow on to and around the cylinder head. Note that the host engine exhaust gas exits below the cooling air. This cooling configuration gives sufficient cooling to the engine. It also helps to keep the model clean during flight. The optional scale exhaust not only gives a scale look, it also functions as additional exits for warm air inside the engine cowl.


Peace,
Steven Chao,
CERMARK

hi again shaddow !! as we have the same model ..(see in forums that they talking http://www.flyinggiants.com/forums/s...odel+sbach+342)
(http://www.rcuniverse.com/forum/m_99..._1/key_/tm.htm) (http://www.flyinggiants.com/forums/s...ad.php?t=55352) in your manual says that the cg is 5 1/2 in from the leading edge and says also 132mm ( but 5 1/2 '' is 139mm ) now ..all the planes of that kind the cg is on the wing tube/// that is if you measure 12cm =120mm and if you read in the forums that i have post to you say for tail heavy and that the cg is better from 12cm to max 13cm!!!!!! ..( with the lighter engine DLE30 ) AND That they need to put weight 280-360 grm to have a good balance ..but you have a 200-250 grm heavier motor from dle30 so i think your life is going to be more easy with this model ....and only to play a little with the battery place to have the perfect spot ......
12cm is on the wing tube....others say just behind the wing tube.....and as you can see in the forums say that in the recomend by manufacture cg 5 1/2 '' was way tail heavy and problem to land!!! also put expo (30%-40 % ) in elevator also they say ..that it has to much responce
good luck !!!!
and post your report from your flight[8D][8D]

in the placece that is the * * * * put
flyi n g ia n t s

shaddow what is the length of the standoffs of the mld 35 ??

thanks

Hi George

the length of the standoffs are about; 65mm

SHADDOW i forgot to ask also how is the fitting of the cowl Do you have space in front of the engine and the cowl ?? the cylinder touch anything in the cowl ?? or the front face??
as i understand a 4mm plywood is the best solution ??
thanks!!!

Hi George

This is my email [email protected]

email send!!!! plus i send my manual ...

HAHAHAH its the same manual .....[X(] as you understand from the same manufacture.... as i thought well,... redwing , peakmodel , bought from the same ...(sdshobby ) .. is the same....airplane ( sbach 342 30cc ) lololol
do you have space in the cowl in front of the engine ,,, any problems ...??

I have sent you a long long email for your review