RE: Top Flite B-25 ARF (Tecnical, tips, suggestions)  
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All Forums >> RC Airplanes >> ARF or RTF >> RE: Top Flite B-25 ARF (Tecnical, tips, suggestions)
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RE: Top Flite B-25 ARF (Tecnical, tips, suggest... - 10/29/2007 10:24:08 PM   
danrc2


 

Posts: 225
Joined: 10/10/2005
From: Frackville, PA, USA
Status: offline 		well i started mine yesterday with hinging the flaps on the in board wing panel. today i started with the left wing panel. i got the engine retract servo and everything else that goes with that one nacelle. let me tell anyone that didnt start yet take your time, i worked on just that one for about 4 to 5 hours. with a couple of brakes here and there. very fun to build.

anyone have any ideas on a set of landing lights for this beauty???
i seen some from RAM. they look okay. just wondering if anyone else was thinking of going that route??

dan

_____________________________

GO BIG OR GO HOME!!!!

(in reply to mike-rc)
       Post #: 176

RE: Top Flite B-25 ARF (Tecnical, tips, suggest... - 10/29/2007 10:26:21 PM   
rcmorrow


 

Posts: 13
Joined: 1/14/2005
From: Stamford, CT, USA
Status: offline 		Hi Mike, I am looking at the E-flite 60's also for mine. Seems like a good fit and with a 6s or 7s pack it should fly very well. I know the Axi's are great motors also, but like Mike, I already have one of the 60 motors. I'll have to do some caluculations to see how it looks in the end though.

Timothy, I htink you said you were going to use the Axi with 8s packs ?

(in reply to mike-rc)
       Post #: 177

RE: Top Flite B-25 ARF (Tecnical, tips, suggest... - 10/29/2007 10:51:41 PM   
normandouellette


 

Posts: 369
Joined: 3/12/2007
From: Laval, QC, CANADA
Status: offline 		Rudder:

I have promesed to send documented steps for some tips. Well here is a picture which I hope will help you. The rudder is held by a small 1/8 inch thich piece of wood 1/2 x 2 inch. Look at it and you will understand. There is not a lot of stress but the slightest impact or stress on the rudder might break it off. To reinforce it you should put a piece of fine fiberglass cloth soaked in z-poxy and link the piece of wood to the leading edge and trailing edge of the stab. putting 2 coats will not be excessive. I have done my first coat and will apply a second one and glue the rudder to the stab. Make sure you have the stab and rudder ar a perfect 90 degree and hold it there with tape while the glue dries. You must remove the coating at the end of the stab for it to be secured properly with the rudder. Using 30 min epoxy on the outside will do. The instructions suggest to fill the joint od the little piece of wood. This at least is better than nothing, but for added strenght this step is easy and will greatly help in securing the rudder to the stab. Pictures are attached.

RCMORROW,

The link to the thread is perfect and loaded with bomb bay pictures. This site is loaded with infos thank you for you tips.. BTW if you check all the pictures there is another plane named "executive sweet" and the pin-up and writing is not the same. This way I do not feel guilty, I have promessed my wife that she woul be my pin-up! Photoshop lets you be creative all the way and you may create your own picture for the noze...be creative and buy "air miles" and "time" with your wifes... it only one of my tricks! Once your creation is made save it or e-mail it to Graphics shop ant they will print it on sticker plastic film ( make spares one).

Good luck




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(in reply to mike-rc)
       Post #: 178

RE: Top Flite B-25 ARF (Tecnical, tips, suggest... - 10/29/2007 11:16:10 PM   
flaviosi


 

Posts: 248
Joined: 3/2/2007
From: Rio de Janeiro, BRAZIL
Status: offline 		Mike and Timothy,

What do you guys think about the Hyperion?

Flavio

(in reply to mike-rc)
       Post #: 179

RE: Top Flite B-25 ARF (Tecnical, tips, suggest... - 10/29/2007 11:29:54 PM   
krproton



Posts: 533
Joined: 8/5/2007
From: Champaign, IL, USA
Status: offline 		Hey everybody.

Two more flights on my B-25 after work today. I wanted to re visit how the plane flies with the APC 13 x 6 2-blade props vs the 3-blade props I have been experimenting with. To bring you up-to-date, I experimented with several 3-blade props and settled on the Master Airscrew 12 x 8. But as we did all of our testing during development with APC 13 x 6 2-blade props I wanted to do a back-to-back comparison.

Well, the APC props do have more pull and fly the plane faster, but not by a great amount. I'm going to stick with the MAS 12 x 8, but you do get a little better performance out of the APC 13 x 6. One of our test pilots from R&D happened to be present after work when I was flying (who was the primary test pilot for the B-25) and he says the same (actually, it is I who agrees with him!).

We figured the best way to explain it is to strongly recommend using the APC 13 x 6 2-blade props for the first flights and until you have complete confidence in your engines--if one should quit the little extra pull you get will help. But overall we like the MAS 12 x 8 3-blades for appearance (when the model is in the pits) and they are also quieter-definitely.

And oh yea, for those of you who haven't read previous posts about all my prop testing, all this is with O.S. .70 Surpass IIs.

See ya!

Tim

_____________________________

Tim Lampe
Hobbico R&D

(in reply to mike-rc)
       Post #: 180

RE: Top Flite B-25 ARF (Tecnical, tips, suggest... - 10/29/2007 11:31:18 PM   
mike-rc


 

Posts: 63
Joined: 2/13/2004
From: Port Washington, NY, USA
Status: offline 		I am not familiar with the Hyperion motor. I used my Power 60 in a Great planes Reactor 46 with 6s 3300. It flew great and had just as much if not more power than a 70 4 stroke, so I figured it should work good in the B-25. I want to use 7s for alittle more power and I can use a smaller prop. I am going to try Graupner 15-8 3 blades. Esprit model makes great mounts for these motors, I already installed one motor and it was very easy. I am glad I do not have to deal with cutting any holes in the cowls.

(in reply to flaviosi)
       Post #: 181

RE: Top Flite B-25 ARF (Tecnical, tips, sugges... - 10/30/2007 12:04:12 AM   
timothy thompson


 

Posts: 2761
Joined: 6/19/2004
From: saginaw, MI, USA
Status: offline 		8s is rated with the jeti 77 esc and motor. i am trying to run both motors and escs from only two packs instead of having to put 4 in but she will take the weight

(in reply to mike-rc)
       Post #: 182

RE: Top Flite B-25 ARF (Tecnical, tips, sugges... - 10/30/2007 12:10:10 AM   
normandouellette


 

Posts: 369
Joined: 3/12/2007
From: Laval, QC, CANADA
Status: offline 		Here is the other picture found on executive sweet...

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(in reply to timothy thompson)
       Post #: 183

RE: Top Flite B-25 ARF (Tecnical, tips, sugges... - 10/30/2007 12:24:57 AM   
rcmorrow


 

Posts: 13
Joined: 1/14/2005
From: Stamford, CT, USA
Status: offline 		Hi Flaviosi, I have had a Hyperion motor for a 40 size YAK54 that I fly. They seem to be good motors overall, but I have had some difficulties with getting the speed controls to work really well with them. Could very well be my own knowledge or lack of knowledge in the programming, but I have much better luck using both the Axi and E-Flite motors.

I have used my Hyperion motor successfully (sp ?) with a Castle Creation 80 amp speed control, using the CastleLink software for programming the speed control (be sure to check the Castle Creations site for the most updated verion of the software).

I go along with Timothy about the Axi, they are really outstanding motors and have very good output as far as power.

Ultimately it is a choice of what is available that provides the needed power for the aircraft of this size, the reliability of the system and the ease of purchasing the system (availability and pricing).

Hope I'm not jumping in, but wanted to share my experience with the Hyperions.

Have to apologize for my typing skills here, sorry if some of my notes have been difficult to read.

(in reply to normandouellette)
       Post #: 184

RE: Top Flite B-25 ARF (Tecnical, tips, sugges... - 10/30/2007 12:31:41 AM   
flaviosi


 

Posts: 248
Joined: 3/2/2007
From: Rio de Janeiro, BRAZIL
Status: offline 		Guys!! Guys!!!!

Do you know about this? http://www3.towerhobbies.com/cgi-bin/wti0001p?&I=LXTFT9&P=7

And this? http://www3.towerhobbies.com/cgi-bin/wti0001p?&I=LXTFT6&P=7

Flavio

(in reply to rcmorrow)
       Post #: 185

RE: Top Flite B-25 ARF (Tecnical, tips, sugges... - 10/30/2007 12:35:14 AM   
p39


 

Posts: 256
Joined: 10/8/2002
From: New Ulm, MN, USA
Status: offline 		I believe they're replacement parts for what's included in the kit.... I mean box.

(in reply to flaviosi)
       Post #: 186

RE: Top Flite B-25 ARF (Tecnical, tips, suggest... - 10/30/2007 12:36:00 AM   
flaviosi


 

Posts: 248
Joined: 3/2/2007
From: Rio de Janeiro, BRAZIL
Status: offline 		Tim,

quote:

Two more flights on my B-25 after work today.


Jealousy!!! Jealousy!!!!!

Flavio

(in reply to krproton)
       Post #: 187

RE: Top Flite B-25 ARF (Tecnical, tips, sugges... - 10/30/2007 12:38:43 AM   
flaviosi


 

Posts: 248
Joined: 3/2/2007
From: Rio de Janeiro, BRAZIL
Status: offline 		Hi, Rcmorrow!

quote:

Hi Flaviosi, I have had a Hyperion motor for a 40 size YAK54 that I fly. They seem to be good motors overall, but I have had some difficulties with getting the speed controls to work really well with them. Could very well be my own knowledge or lack of knowledge in the programming, but I have much better luck using both the Axi and E-Flite motors.

I have used my Hyperion motor successfully (sp ?) with a Castle Creation 80 amp speed control, using the CastleLink software for programming the speed control (be sure to check the Castle Creations site for the most updated verion of the software).

I go along with Timothy about the Axi, they are really outstanding motors and have very good output as far as power.


Hummm... The problem is that my LHS carries only those Hyperions, claim they're pretty good and they're saying they'll set them up for me... I'll have to decide if I stick with them or order Axis directly from US...

Flavio

(in reply to flaviosi)
       Post #: 188