That hp figure given for the MLD 35 romps over the DLE 30 and is more comparable to the MVVS 35 at a substantial weight reduction.I would be very surprised if the hp figure given for the MLD 35 from that site is accurate.

Who has the specs for the MVVS 35?

http://mvvs.nl/

Click Petrol Engines on left of page and scroll down

Thanks Craig 01

Hey Shadow, have a look at this:

MVVS 35 IFS - Walbro cat. #3098iW ; the versatile workhorse.
3,10 kW @ 8 500 rpm (4.2 hp)
weight 1493 grams without ignition
Ignition weight 160 grams
Fuel: petrol, unleaded 95 octane (US: unleaded premium gas 91 pump octane).
High silicon, molybdenium plated piston with cast iron piston ring, running in a hardened steel liner
Use only: Jaso FC+ or ISO LEGD class two stroke fully synthetic oil. Mix at 1:40 (running in 1:30, during the first few gallons)
Bore: 36.5 mm Stroke: 35 mm
Suggested Props: 18x10 to 21x10 or 22x8
MVVS 35 IFS
Plugs NGK CM6,
Typical rpm figures:
Prop. RPM Exhaust
APC 20/8 7600-7700 3268
Mejzlik 20/10 7200-7300 3268
Mejzlik 20/8 8200-8400 3268
Mejzlik 21/10 6600-6700 3268
Mejzlik 20/8 7100-7200 3268
Mejzlik 20/10 6300-6400 3271
Mejzlik 20/8 7300-7500 3271
Mejzlik 20/8 6700-6800 3298

I have a 73" sbach and the 35 should be ok. Mine has 5.2" from firewall to prop hub (using a Syssa 30 on a Pilot-RC Sbach 342 with the carbon fiber parts). I used an ignition battery eliminating circuit (with the opto kill) to save a few ounces but ended up having to add the weight back to balance. More engine would be nice instead of the dead weight although the Syssa flies it exceedingly well with NO lack of power. I agree with Jimini about the plane being designed for a 30cc engine being capable of taking a 35cc engine. Just compare prop and rpm data and "pick your poison"!

I was just fiddling around the web visiting a few of the bookmarked sites I keep for engine choices for a Warbird (as I do on a daily basis). I noticed the MLD-35 at Valley View RC. Hadn't noticed the MLD-35 at Valley View before today, but maybe I just wasn't scrolling down far enough. So.....

Knowing Jodi's reputation around the board as a excellent motor man with a well respected opinion , I was wondering if we could get Jodi to make an appearance here and give us his thoughts and feedback. I'm strongly considering this engine (deciding between MLD-35, MT-35, DLE30 and JC 28).

I bet if you emailed him he would glady give you an honest assesment.he does have a great reputation on the internet.

I considered just emailing him, but figured other people might like to hear what he has to say on the matter.

hey I would love to hear what he has to say a 35 cc is a good sized motor and know the 28 is a decent motor.

Hey Guys
Got the engine and Sbach 342 yesterday..  the engine looks very nice

it will take time to build the airplane though...

I have the MLD 28 CC on Edge 540 already for about six months and just 2 weeks ago i was starting it for braking in, so you can understand how slow i am

ok but you cant brag without some pics lol.

lol I am sure you all know how they look

OK

In design and component quality, the MLD35 is a far cry from any of the former offerings from SPE or MLD, it has a new ignition capable of any voltage from a 4 cell NiMh/NiCad to a 2 cell Lipo, a Champion Y-82 spark plug, and a Walbro WT 805 carburetor.

Though a fair bit short of the published claims the engine ran well and does have more power than any other in the same class at this time, but that power is not free, it's a full 1/2 pound heavier than the nearest competitor. The biggest issue I see with it though is it's physical size and shape, it looks like any other rear inducted single but it seems very large for it's displacement, it's very short from the cylinder to the prop hub face and very long from the mounting lugs to the rear of the carburetor. Mounting this engine in many currently produce ARF airframes will require engine box modifications and the carb must be inside the engine box, in order to keep the carb out of the engine box it would need stand offs well over 3" long, never do that. I don't view these issuesas bad, just different.

It has a unique 4 bolt pattern for the prop hub and the muffler is mounted on an angled facewith it's unique bolt spacing and port size. This means there are no aftermarket accessories like drill guides or pitts mufflers available at this time.

Like all the other Chinese manufacturers, they still don't bother with ignition timing, it was 38* and due to sensor limitations I was only able to get it down to 31* and Iran it like that.

This is probably a question for the designers... Why is the carb insulator block so long? What is the engine gaining having it that long? Interesting the mounting lugs are inline with the crank or just a bit aft. The crank case housing is surely different from what I am used to seeing.

Could be less heat that is delivered to the carb ?

The carb spacer on most engines could be 1/2 or 1/4as long. The reason most are long is because the engine maker wants to use a off the shelf item instead of designing a short spacer. They are not needed at all forsome engines. They are needed mostlyto prevent heat soak. That is when you stop the engine & the heattransfers "soaks" up and into carb causing a hardrestart. When engine is cool/cold no problem on starting.Also you can get a 90 degree intake...carb will be tucked in closer instead of through cowl.

Photo below Capt,n

Heat soak also applies to a running engine. If the carb were to be mounted without a spacer, the fuel will get hot, and vaporize too readily, causing premature detonation. (dieseling) This would cause loss of power, and consistant dead sticks. I would think the pump would become less efficient, also due to the density change in the heated fuel. My opinion here, I could be wrong, maybe 195 degrees is not enough to affect the fuel this severely, but I bet it would definately be noticeable.

The temps of the air can get/be lower that ambiant air in. Thats why a carb ice-ing can happen. Full scale airplane engines (some) have a lever to add carb heat when needed!

I have measured the temps myself & found the temp of carb to be a tad less. capt,n

wrong thread

shadow!!!! I JUST BOUGHT AN SBACH 342 FROM PEAKMODEL ...designed for the dle30 v2.....BUT I HAVE NOT BOUGHT THE MOTOR YET ...and i love the idiea to put the mld 35!!!!!!
so as i understandyou have also bought an sbach 342 -300 73'' ??? have you assemply the model yet any issues ...because you are going to help me a lot with the engien decision
i dont bother to have more power abd to use it wise!!!!!! and because the money of these 2 engines are close ...if i can buy the mld and to use it with out cut so mch the cowling (because the firewall and cowling is designed for the dle30 ...i would be happy with the idiea)
thanks

Hi GEORGE

I have not yet assemble this airplane with the engine, i am working very slow.
it seems that the engine is about 3 or 4 mm short so you will need to add some spacers in order that the engine will sit in the right position, also it looked that you need to cut some of the firewall because of the carb length.

i dont know what need to be done with the cowling since i have not reach it yet.
I guess it will be a while..

sorry I can help much.<br type="_moz"/>

tks for the reply ,,,,well when you continue just if its possiblle to put some photos of the project it will be a good help for every one and especially for me...!!!
i like the idiea of an more power airplane especialy in 3d .......so if its possible ...put a photo ...it may help ...,,by the way...i just have open the box to see my plane only ... SBACH 342 30cc FROM PEAKMODEL..very nice construction....and because i have not bought the dle 30 i am thinking to buy the mld35...

Hey guys, I thought I,d jump in. I have the Cermark 540 edge 77 with a RCGF 45cc in it. Its been a blast to fly. I did have to cut the side of the cowl to fit the muffler, but it came out fine. I,m sure the 35 would also be super fun. I,m doing a little cowl repair, when I get finished, I'll post a picture or two

Hey stiffy, did you have to re-do your fire wall, engine box in the cermark 540 77 to accommodate the mld-35?? Or did it fit with no problems........thank you