b's  
View related threads: (in this forum | in all forums)

Tower Hobbies
Enter up to 4 keywords or Tower stock numbers
Logged in as Guest



Users viewing this topic: none
  Printable Version
       

All Forums >> RC Airplanes >> RC Warbirds and Warplanes >> b's
Page: <<   < prev  2 3 [4] 5 6 7 8 9 10 11   next >   >>  

Login
Message << Older Topic   Newer Topic >>
b's - 2/9/2002 8:31:58 PM   
1wolf-RCU



Posts: 190
Joined: 1/4/2002
From: camdenton, MO, USA
Status: offline 		Pantherjet when ya get a chance post us a couple of pics!! It was good to here from Brian that you guys were going to be together in plenty of time for the fly-in. I think we'll have the first 3 no problem but the 4th will cut it pretty close. We went with cut kits as a matter of time savings. We didn't have the time to frame all of them and cut them. But I gotta hand it to Precision Cut kits we sure haven't had any regretts about buying their kits. I'm sure you'll be very happy with the Robarts with all that pavement you guys have they shouldn't be a problem. I have Robarts for my 86" Corsair and my 94" P-40 and frankly they aren't to stout so the grass worries me a bit. The Barton's are much stronger. When you and Brian get a chance bring your toys and come visit. We can compare notes.

(in reply to badigital)
       Post #: 76

Building a Ziroli B-25(CONDENSED VERSION) - 2/10/2002 7:23:37 AM   
mselby



Posts: 364
Joined: 12/29/2001
From: Bangkok, THAILAND
Status: offline 		Hi 1wolf,
I glassed with 1 oz cloth. I reinforced the inside of the nacelles with carbon kevlar, I also did this at wing joints and stab joints internally. I checked weight the other day and I am just shy of 33 lbs. When I balanced the model originally, the only thing I needed to play with was battery positioning. There are two good size packs and they did the trick. The engines are very near the cg and engine weight changes have fairly minimal effect.
My tank layout is pretty standard with home made kevlar tanks conformed behind a modular firewall.
Mike

(in reply to badigital)
       Post #: 77

Building a Ziroli B-25(CONDENSED VERSION) - 2/11/2002 5:16:03 AM   
alsez


 

Posts: 54
Joined: 1/28/2002
From: Eustis, FL, USA
Status: offline 		Fllew my Z 25 for a number of years with 38's until one left the plane on a slow pass at the Deland bigbird several years ago. Engine was caught by one of the video people. At sea level the g23's on electronic ingnition would be ok. I flew the plane around lthe Denver area for most of its life. Elevator and rudder servos were in the tail. Robart gear and Byron wheels and brakes. The Byron wheels can be fitted with ballbearings . They are nice easy flying planes. Nick used my video at Toledo one year showing touch and gos at 7000 feet.

(in reply to badigital)
       Post #: 78

engine - 2/11/2002 6:30:39 AM   
1wolf-RCU



Posts: 190
Joined: 1/4/2002
From: camdenton, MO, USA
Status: offline 		Hi Alsez
What was the reason for the engine failure? Do the nacelle firewall's need beefed up?? We are running rcs 1.8's.

(in reply to badigital)
       Post #: 79

Building a Ziroli B-25(CONDENSED VERSION) - 2/11/2002 7:19:06 AM   
mselby



Posts: 364
Joined: 12/29/2001
From: Bangkok, THAILAND
Status: offline 		1Wolf I don't think you will have a problem with a 1.8 pulling off, however, reinforcing the nacelles, and glass reinforcing the firewall is a good idea.
Mike

(in reply to badigital)
       Post #: 80

B-25 - 2/11/2002 7:23:49 AM   
pantherjetf9f2


 

Posts: 9
Joined: 1/19/2002
From: jefferson city, MO, USA
Status: offline 		Alsez what fuel tanks was in your B-25? From what i can find the only size tank i have found in a 16 oz tank will fit.

(in reply to badigital)
       Post #: 81

Building a Ziroli B-25(CONDENSED VERSION) - 2/11/2002 6:50:21 PM   
alsez


 

Posts: 54
Joined: 1/28/2002
From: Eustis, FL, USA
Status: offline 		After literally hunderds of landings and takeoffs the wood gaveway. There was no fiberglass cloth to help bond it all together, a practice I changed rightaway and even went back to my other twins and did a better job of glassing the former to the side sheeting. As for tanks I use the Hays 16 oz tanks on all my 38s. Sure miss the Hays 24 oz tanks. I have seen little longterm success using glow engines of any kind over the years. The pumper carb seems to be the key. The vibration with two glow engines seems to upset the fuel draw at an open carb,plus an electronic ignition gives a smoother idle, plus easy hand starting. Not to mention over a pound of weight savings per engine. My conversions and repairs have been done by RC Ignition in AZ for the last 15 years. They can be reached at RCIgnition.com Don't get me wrong on glow engines, love them just seems that when it comes to twins funny things happen with them and they need to be reset with temperature changes. Set a gas carb and leave it forever.

(in reply to badigital)
       Post #: 82

Fuel tanks - 2/11/2002 9:22:45 PM   
gibb


 

Posts: 108
Joined: 1/26/2002
From: Livonia, MI, USA
Status: offline 		For a better tank fit, try the Graupner tanks from Hobby Lobby. They are shorter in length but taller and fit the nacell opening of the B25 very well. I believe the ones I used are 17.5 oz.

(in reply to badigital)
       Post #: 83

Building a Ziroli B-25(CONDENSED VERSION) - 2/12/2002 8:02:21 AM   
pantherjetf9f2


 

Posts: 9
Joined: 1/19/2002
From: jefferson city, MO, USA
Status: offline 		I have decided to use the rcs 140 eng. if fits just right and behind it I am putting Graupner 24.5 oz tanks they measure 5 3/4 long x 3 3/8 wide and 2 5/8 high, that fits fine. pantherjet

(in reply to badigital)
       Post #: 84

primer - 2/13/2002 6:13:36 AM   
1wolf-RCU



Posts: 190
Joined: 1/4/2002
From: camdenton, MO, USA
Status: offline 		Thanks guys Taking your advice and reinforcing the glass around the nacelles. hope to be ready to prime #1 tonight.

(in reply to badigital)
       Post #: 85

118" VERSION - 2/13/2002 8:47:27 PM   
Sundowners


 

Posts: 7
Joined: 2/11/2002
From: Penn Hills, PA,
Status: offline 		I've been reading this trend and noticed that most of you are building the 101" version. What about the 118" version? How does it compare to the smaller version and what are the advantages/disadvantages of going bigger?

Thanks,
Brian

(in reply to badigital)
       Post #: 86

Building a Ziroli B-25(CONDENSED VERSION) - 2/13/2002 10:23:19 PM   
gibb


 

Posts: 108
Joined: 1/26/2002
From: Livonia, MI, USA
Status: offline 		bigger flies better, just harder to transport. It also allows you to "scale" the bird farther while not hurting the flying qualities. Since the 101" version is only 1/8 scale, panel lines get rather small.

(in reply to badigital)
       Post #: 87

size - 2/14/2002 1:13:26 AM   
1wolf-RCU



Posts: 190
Joined: 1/4/2002
From: camdenton, MO, USA
Status: offline 		we did the 101 because we had the prints and the kit was readily available but if I had it to do again I would go the 118". we had to shoehorn in the rcs 1.8 on the 101 but they would have fit much better on the 118. All in all I don't think the 118 would have really cost any more to have built.

(in reply to badigital)
       Post #: 88

Building a Ziroli B-25(CONDENSED VERSION) - 2/14/2002 6:05:36 AM   
alsez


 

Posts: 54
Joined: 1/28/2002
From: Eustis, FL, USA
Status: offline 		I have a couple of RCS 140 engines and like them very well. I would think that a 12 or 16 oz tank would be max unless you just want to carry extra weight around. I use the 16oz and get a couple of 10min flights before I refuel. Have always used Klots 100 to 1 mix and never a problem. The G 38s are going in my large Z 25 but need a month or so before its finished in primer. I use the 38s in a DC 3, P 61, and a D18. All these planes weigh in the mid 40s. Did not mention that the 140s are in a DP Ultimate and Hanger 9 Ultra Stick. Installed one in the new Horizion T Craft for another person in our group also.

(in reply to badigital)
       Post #: 89

b-25's - 2/14/2002 10:18:51 AM   
1wolf-RCU



Posts: 190
Joined: 1/4/2002
From: camdenton, MO, USA
Status: offline 		Be happy to post pics Mike. Alsez how do you like the 140's?? The 1.8's are little tougher to fit in the 25's due to the length. Do you feel the extra work is worth it over the 38's?? We went with 2 16 oz. tanks in the fuse and with the gas engines that should be plenty.

(in reply to badigital)