MTK

I've been playing around with the DLE55 in the EF extra 78". Incredible thrust to weight ratio as you'd expect,; got to be around 3:1. Early break in on 22x12 2 blade; current prop is 20x12 3 blade. That's an extremely quiet, very sweet set-up. Electric like in quietness. Only time engine is audible over background noise in a model field full of muffler sound, is when running it at full revs. And no the Extra didn't fly apart with that much power up front. This ARFie is well built, mostly plywood of good quality. No punky lite ply in this one.

But I'll admit to a raised eyebrow at first when I revved the 55 for the first time. I was very skeptical on how the crate would hold up. But now, after about 15 flights, I'm getting used to the thrust to weight and having a hell of alot of fun with it. This combo with 3D rates would be a hoot, foamie like. The big wing keeps top speed under control and the 3 blader slows down extremely well for low and slow, on the deck stuff

Engine is piped and soft mounted, hence the terrific noise reduction. Take a look on the EF 78" Extra thread in the Pattern Forum

After completing the DLE 55 break in, the OS33 will go into that plane for a read on performance

k4lm

Don't forget to add the price of the standoffs.  BTW, doesn't "rated" mean normal voltage?  It did say 4.8 to 7.6.  I don't know of any batteries that are 4.8 fully charged.  The Manual also states "Ni-Cd, Ni-H 4-6 cell, Li-Po, Li-Fe 2 cells".  I don't see why they don't say the number of cells for the Li-Pos, but 6 Ni-H charged are a lot higher than 7.6 volts (actually, 6 Ni-H fully charged is over 8 voltages).  Unless the copy of the Manual that I have is wrong, you can use a 2S Li-Po at 7.4 rated volts.

MTK

NiMH chemistry is fully charged at 1.4V/cell. A 6 (??) cell has a nominal voltage of 7.2 and peak, fully charged voltage of 8.4, same as a 2 cell Li-Po. Why would anyone use 6 cells of NiMH if they can use 2 cells of LiPo? I don't get that.....

A 5 cell NiMH will be around 7 volts fully charged and is much more pallatable...for servos too

ghoffman

My Feedback: (3)

Great, let me know how that goes! I like the EF Extra, but I need a new motor for it. If you have any pics of the DLE-55 setup with the 3 blade, I would appreciate it.

PlaneKrazee

My Feedback: (14)

After flying the EF 78" with the dle 55 it'll suck with any 30 something motor.

MTK

So far, very nice, but that's only about 2 gallons avgas through the engine. Not enough run time yet....roughly 20 oz tank lasts about 15 minutes or about 3 1/2 hours run time. I'd like another 3 1/2 hours before winter but we'll see. The 33GT will wait until Spring probably

Truly surprised by the DLE55's super simple and easy field manners too. Using the stock Chinese plug and CDI. Don't know how long they'll last but so far so good. Todd Syssa made me a set of stand offs to length for 8-32's (normal for the SAP 180) rather than the stock 5 mm, helping reduce weight a bit. A friend who runs a machine shop removed over 4 ozs of dead weight from the 55...down to just under 43 ounces.

I suppose enough about other engines in this OS33GT thread. I have its header just about set-up...will use the ESComposites 40G pipe on it.

k4lm

The question was, can you use a 2S Lipo without regulator.  So, if you can use a 6 cell NiH you can use a 2 cell Lipo.  The manual was using RATED voltage of 4.8 to 7.6 and there was confusion between charged voltage and rated voltage.  They ( OS ) probable should have used NOMINAL voltage instead of rated voltage in the manual.

ameyam

Confused!![&o]

You have 2 gallons through the GT33 or through some other engine?

Ameyam

ameyam

EDIT

ameyam

Admin, pls delete the duplicate posts caused by my internet connection

PlaneKrazee

My Feedback: (14)

MTK has not run the 33 yet. He was writing about his DLE 55.

MTK

Yes sorry... I have not run the 33Gt yet. Still need to finish the soft mount for it and get a pipe set-up. The header looks like it will work. If this proves out to be a good pattern engine, I think that Hatori will be offering a full line of exhaust components...

I'll try to get some photos to post

airborne2.4

This OS GT33 looks real nice, I hope it's reliable. OS, don't LET ME DOWN

grimbeaver

I have not been in this hobby real long so answer me this, is it normal that OS doesn't put anything about a new engine on their website till long after it ships? There's still no mention of the GT33 on their site. I look forward to reviews though as I'm thinking about putting one of these in an AeroWorks 30cc Extra 300 next spring. For now though I just get to wait patiently for the snow to being to fall

ghoffman

My Feedback: (3)

I really hope this turns out to be a great engine, the new 3DHS Edge would be awesome for this if it performs as expected.

TimBle

oh dang thats luuuuuuuuuveeeeerleeeeeee
must have one

ghoffman

My Feedback: (3)

Here is the other color scheme as for it as well

TimBle

Nicest!!!

ghoffman

My Feedback: (3)

So you guys in the warm climates, hurry up and fly this new engine and let us know how it is! I have to figure out what the Winter build is going to be!

wyo69cowboy

My Feedback: (2)

Those are sweet lookin'!

ghoffman

My Feedback: (3)

Note the airfoiled control surfaces! This plane should come in around 10-11 pounds so if the GT-33 can make over 20 pounds of thrust, it will be a blast to fly!

mikes68charger

My Feedback: (34)

I havent been in the hobby to long, but in my mind I don't see how the OS will last much longer than a DLE. When from what Im told that all high quility gas motor will give years of good service.

Even if the DLE is not the most powerfull its the best price for HP in my book, so thats why some one with my limited budget has 1 DLE 20, 3 DLE 30's, and 2 DLE 55, ALL used motors from this fourms and RC Groups and have not had a single issues with all these used motors.

I just don't under stand why they just don't make these new gasers with rear exsaust outlets, to help with muffler weight, and tight cowl issues.

To be honest its hard to compair all the new 30-36cc gas motors, but it seem to me this hobby has become more about name brands than its acctual quility. I really belive the new PTE 36 is an amazing motor, lighter than a DLE 30, way more power and with rear exsaust. But It seems to be a off name brand so not a lot of talking on this fourms about it.

Is it becouse it will never be sold at Towerhobbies, so it will never be main streem like OS or DLE?

ghoffman

My Feedback: (3)

I have been doing this for a while, that is the first time I have heard of a PTE. I do like the rear exhaust, for sure.

TimBle

It hasn't arrived on our shores yet.
But I do have a lovely new Red GW Racer Edge 30cc on the way

Pippin

It's not all that bad:

http://www.youtube.com/watch?v=LvJs3YOryfA

http://www.youtube.com/watch?v=o4QBd-1ybsg