Motor for Comp Arf 2.3 ??

[gene6029]

Well here is my first post and I am really looking for some input. I am assembeling a Comp Arf 2.3 Extra for my friend and have one ordered for myself. The question is that we are debateing on what motor to put on them. He is leaning towards a EVO 58 but we were both wondering what the plane would be like with the new DA-85. He is a 3d nut, but is going to use the plane for IMAC in the Basic class also. I am looking at the 85 also. My first choice was the DA-50 but he says I wont be satisfied with its power out of a hover. I also fly IMAC but wont use this plane for that. I dont fly alot of 3d but dont want to be left with not enough power when i do. I know the 85 is new, and have been looking at threads where people are putting them on slightly larger planes but have not seen any on the 2.3 yet. What do ya think? Over kill, on the 85? Under powered with a 50? I dont have any experience with the EVOLUTION 58, however he has a EVO 45 on his WildHare Edge & it hucks it around & runs fine. This is going to be his main ride, so he wants to get it right. Mine is going to be for everyday huckin around. I'll be waiting for input, thanks....Gene

[skyesdad]

Had 3w 75 on mine no pipe or cans and it worked well . good luck and you will love this plane

[Fearless Flyer]

Go with the 3W75 or the Evo 58

[GmanBill]

Go with what ever you wan't to afford, all the motors out there are good and run well and the ones you mention would do a good job. You will get a bunch of diferent answers because some people think this is NASCAR and that what they run is the best. The only way you can find out what you think is best is to try them and make up your own mind.

[gstjohn]

I have the 2.3M comp-arf and I have a BME 95 on it. the engine is a perfect combo for that airframe, I have even heard of guys putting the BME 110 on the plane and it is just ballistic. but at my altitude 5000ft ASL the 95 pulls my plane around great and it can hover at about 1/3 throttle.


I hope that this helps, but as stated in a earlier post, go with whatever engine suits you and your flying style, all of the engines on the market are good.

[Toro]

New DA 85 ? this thing I believe would make it a rocket ship. I had one with a DA 50 and a pipe on it. It did OK, but I think this ship is best suited for the 80 class size motors

[Niklas H]

Hi,

I saw just a few days ago this thread in a German forum, this guy put a DA-85 in the C-ARF 2.3m EA. He modified his cowling because he mount the DA horizontal, looks very ugly .
He sayed the plane hovers, torques about 1/3 throttle, seems to be a rockert with the DA85.

Yesterday i saw the 2.3 with a Plettenberg Terminator and 10s Thunderpower 9900mAh, i think this is also a very nice Setup but very expensive.

regards,

Niklas

[gene6029]

Niklas H, I went to the site you mentioned, but I dont speak German and tried to get in and look at some pics ets, but I think I woud have to have been registered to do that. I spoke the folks at DA, and they were not too thrilled at the idea of putting the 85 on the 2.3, said it was too much motor for the airframe. I talked with my Comp Arf rep & it didnt seem to be an issue with them. I would have liked to talk or at least looked at some pics of how he installed the motor & got some final weights. I have been adding everything up and keep comming out around 19 - 20 lbs with a set up like that. Im putting an EVO 58 in anothe 2.3 extra this morning ( building for a friend ) and as far as weight goes its allmost right at the same weight as the 85 and its supposed to be ballistic in the 2.3 airframe. If anyone out there hears of any DA-85s in the comparf extra airframes in the near future i'd be interested in talkin with them. My plans would be to mount it vertical and initally put it on in an in cowl . Thanks.....Gene

[catman3070]

I've seen this plane set up with the DA 50 and a 3W 70. The 50 had a grieves pipe set up with a 3 blade prop. Although the 50 had plenty of power with the pipe it lost it on a vertical up line snap. The 70 was set up with pitts muffler and 2 blade prop. This set up pulled the plane around with authority, but didn't seem to have it out of a stall. Neither of the guys were good at hovering but from what I saw the 50 would hover around 2/3 - 3/4, and the 70 around 1/2 - 2/3.

If you look at the weights of all the engines from 70 - 85, the DA is by far one of the lightest. With the DA you could set up the plane with a can and 3 blade prop without adding a lot of weight.

[Niklas H]

Hi Gene,

Sorry, your right pics are only for members. I save them and upload it.

Like i said its very ugly, but mounted vertical i will be a godd way to do this.






I will ask him about the weight, and tell you that as soon as possible.

Greetings,

Niklas

[3D-Seth]

I think the DA 85 is overkill. I had a 3W 75 on my 2.3 Extra 330 and it had more than enough power for any type of 3D or IMAC figure. It hovered below half throttle. I prefer DA engines but the 85 is too much for the plane, and the DA 50 on a tuned pipe isn't quite enough.

Seth

[catman3070]

I would agree the 85 would be to much power for the plane. However they also recommend the DA 50 on a Hanger 9 Extra 260. You want to talk about overkill and destruction of an airframe. It all would come down to what a person wants to run, I think this plane would be great with any engine from 75 - 85. However if I was to build one I would Definitely choose the DA, just because that is what I use (that is the nice thing about choice, it is all yours)

[3ddd]

woy that is an ugly plane,at least the cowl is

[gene6029]

Niklas, thanks again, great pics, but I agree with everyone that cowl just aint cuttin it. Would have looked much better hanging out the bottom. But that is the first one i have seen with an 85 on it. I put a EVO 58 on the first of two im putting together this morning. Still up in the air on what im puttin in the second one. I have recvd alot of input from everyone and that has fried my brain. I need to just continue building these two for now and fly the first one with the 58 & make a decision from there...Gene

[Niklas H]

Hi Gene,

He answer my question in the other forum, his Extra weights 9,6kg but he is using NiMh Batteries.

Greetings,,

Niklas