Bikerboy53

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Hello all,

I am about to finish of one of these bad-boys and was wondering if the DLE 61 engine would overpower/overweight the 29% scale airframe which weighs VERY little to start with. If this is indeed the case then would the DLE 55 be sufficient for possible 3D flight?

Thanks in advance

Biker

Plane Addicted

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Biker,

What do you think your S-Bach will end up weighing flight ready? I have flown an 18lb cap 232 and a 14lb Extra 260 on a DA50 and both aircraft had plenty of power. I am not sure how the DLE55 compares to the DA50 but I would guess that they have similar performance.

BarracudaHockey

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Is that the 50cc airframe?

Bikerboy53

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Yes it is Cuda

Bikerboy53

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Not sure PA, but if I had to guess, I'd say around the 14 lb range once all is said and done...

BarracudaHockey

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DLE 55 or 61
GP-61
DA- 60

If it's the Pilot RC one you're looking at 17 lbs or so

Bikerboy53

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Cuda,

Its the kit from Slipstream Air....

BarracudaHockey

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If it's going to be 60cc and 14 lbs it will be a rocket.

My Corvus at over 18 pounds is sick with a GP61 and Falcon 24x9

I would humbly suggest you get a bottle of thin CA and put some glue on every joint you can get your hands on.

Bikerboy53

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Cuda,

Not 100% certain of the final weight, just a guess, but after looking it up, most say that the flying weight is between 16-17 lbs

Plane Addicted

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Biker,

I looked up the DLE55 and 60 and there is a .5lb difference between the two. With this size aircraft and if it is going be in the 16lb range I think that I would go with the DLE55 to save the .5 of weight. I don't think that you will be lacking any power with the 55. It should have enough power for pattern style flying. I don't think that you will have enough power for full on 3D flying with the 55. I don't fly 3D so I look for what gives me good pattern flying performance and helps me keep the weight down.

Plane

Bikerboy53

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Ok....I will take a closer look at the two...

Thanks for your input Plane

Biker

fly24-7

Biker:

I have this airframe from Slipstream in the 30cc size. I encourage you to take a good hard look at the engine box and beef it up if needed. On my maiden, my DLE30 almost shook the firewall out. It was my first gasser and I was too inexperienced to see that the engine box was not built to withstand the vibration of a of a gas engine.

BarracudaHockey

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I'm going to have to disagree with your assessment as to whether it will fly 3D with a 55.

My Pilot RC 50cc with a DLE-55 on a canister was more than capable of flying 3D in the right hands. Certainly it wouldn't 3D like my 15 lb MSX-R but it acquitted itself quite well.

Also a little weight actually helped it carry energy through maneuvers better than the lighter MSX-R. I wish I had a video of my buddy flying but, but well....he 3D's my night vapor, so I can tell you its more about the pilot than the airframe

Bikerboy53

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Cuda,

I went ahead and took the plunge and picked up the DLE 61, also went with Hi-tech 7955TG servos all around with redundant A123's for power....after taking a look at the DLE, man this is a lotta motor!.....I have begun adding triangle to any and all joints near the motor box and this is after hitting all joints with thin CA..

I do have a question though about the canister issue, I'm not TOTALLY new in the gasser arena, but I'm curious as to why I would need this other than for possible sound ordinances near the area....

BarracudaHockey

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It sounded cool. I don't have any noise restrictions, the only neighbors are a power plant and a gun range, and a few alligators and wild pigs.

Bikerboy53

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LOL!...

So its not safety issue or fuel issue or anything?....just for sound reasons huh?

Plane Addicted

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I agree with your thoughts. I was intending that if he wanted full on awesome 3D performance then the 61 would be the way to go. The 55 would definitely handle some 3D stuff but not with the authority that the 61 would.

BarracudaHockey

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Just because it sounded cool.

FBaity

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I totally agree on thin CA on all joint you have access
to.

Bikerboy53

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Thanks for your input Plane...another question now that I have this one resolved, I'd like to swing a 3-blade wooden prop with this motor, any suggestions in terms of prop size for break-in and size for flight?

Thanks again

Biker

grosbeak

Hey Biker,

I have that same 50cc Slip Stream SBach 342.



I bought it used and it's powered by a DA 50 with a canister. I've modified it extensively - see my web page (http://www.grosbeakrc.ca/aircraft/sb.../sbach342.html) and photos (https://www.flickr.com/photos/rests/...7632541413461/).

Take note that unlike the Pilot RC version the specified CG is almost an inch forward of the wing tube. I have three batteries strapped to the motor box and it still needs lead to balance. That's part of the reason it's heavy at 19.8 lbs.

With the weight and the powerplant it's a good IMAC plane - I don't know if you'd want to 3D it, though. I have no interest in doing so.

Plane Addicted

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Biker, I do not have any experiance with 3 blade props. On my DA50 I ran a 23/10 and a 24/8. Maybe somebody else in this thread has some experience with 3 blade props.

Plane

BarracudaHockey

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You'll want to drop an inch in diameter if you go to a 3 blade

Bikerboy53

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ok, will do, thanks Cuda

Bikerboy53

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Yo Cuda,

So if I go with say a Beechwood 24 x 9 two blade prop for break-in @ 30:1 mix and then move to a 23 x 9 three blade for post break-in does that sound about right ya think?