RE: NEW Mintor 33cc and 38cc
at out field here in Italy we have plenty of Mintors running great! I'm planning to fit two 38cc on the Beech D18 I'm building from Ziroli plans. BTW, from a high quality engine such as these, I would expect a better electronic ignition rather than a cheap chinese unit... In case I get these from the factory (2 hours by car from wher I live), I'll be glad to report you my visit. I'll kee you posted... Marco
Posted on: 11/14/2011 5:34 AM by Author "marcoferretti" in the forum "Gas Engines"
http://www.rcuniverse.com/forum/fb.asp?m=10811262

RE: Great Planes Seawind
Little progress on my seawind. I have installed the nose retract. It's a mechanical retract, but instead of the servo, it will be operated by a small air cylinder (air up - spring down) that was placed inside the fuse. It took some time to find the right position and fine-tune the lenght and shape of the pushrod, but now it works fine. Next, I have to find a place for the steering servo. M.
Posted on: 1/28/2011 12:31 AM by Author "marcoferretti" in the forum "Seaplanes"
http://www.rcuniverse.com/forum/fb.asp?m=10294722

RE: Great Planes Seawind
Hi all! Finally my seawind arrived last friday. I saw the bad news on TowerHobbies.... wow, seems like I'm lucky! I'll go electric on my seawind - Bob, thank you so muck for your suggestions! And some mods will be done too. I don't like having small servos on rudder and elevator. Small servos have small gear and a small potentiometer. Since I have no fuel-tank, the elevator servo will be placed in the tank compartment. The rudder servo is placed in the fuse. Hope all this will help shifting the weight as forward as possible. Notice the added formes for the battery tray. That's all for now. Marco
Posted on: 1/24/2011 12:58 AM by Author "marcoferretti" in the forum "Seaplanes"
http://www.rcuniverse.com/forum/fb.asp?m=10284155

RE: Great Planes Seawind
Bob, PM sent. forgot to tell you: my lake is about 300 meteres above sea level. What difference does it make? Marco
Posted on: 1/9/2011 2:22 AM by Author "marcoferretti" in the forum "Seaplanes"
http://www.rcuniverse.com/forum/fb.asp?m=10249732

RE: Great Planes Seawind
Bob, In some previuos posts I found out you went electric on your Seawind. I must say that I am a 4-stroke lover, I just the way they perform and their sound is beautiful! But please, convince me going electric on my seawind!! I mean.... pros&cons... Thanks! Marco
Posted on: 1/8/2011 8:46 AM by Author "marcoferretti" in the forum "Seaplanes"
http://www.rcuniverse.com/forum/fb.asp?m=10247972

RE: Great Planes Seawind
Bob, Jeff, thanks for your comments. You have summarized in simple words all the water handling issues of the seawind; still I'm not demotivated! At my local club, we arrange for a copuple of "flying days at the lake" every year, just because we need to borrow or rent a boat for retrieval. Lake is very large (almost 0.8 miles wide) and it is surrounded by tall mountains on one side and slight hills all around, so water is mostly flat This said, I will fly it from grass at our field most of the time, but i think it's a very challenging thing taking this bird off water, I have to try! So, I think I will order my seawind, and meanwhile I'll put on floats my old Spacewalker... Marco
Posted on: 1/7/2011 12:53 AM by Author "marcoferretti" in the forum "Seaplanes"
http://www.rcuniverse.com/forum/fb.asp?m=10245210

RE: Great Planes Seawind
Hi all, I went through the entire thread: thanks for sharing your experience with this beautiful ship! I'm about to order a Seawing at my LHS... no fear in taking-off/flying/landing heavy wingload planes, but my question is: according to you, do you suggest this as a first seaplane? Thanks! Marco
Posted on: 1/6/2011 2:54 AM by Author "marcoferretti" in the forum "Seaplanes"
http://www.rcuniverse.com/forum/fb.asp?m=10243116

RE:
Maiden flight on my little toni last week: flies great!! Engine is a Saito FA125 spinning a 14x10 APC. With the tuned pipe we built, the engine revs up to 9.300rpm (9.000 with stock exhaust) on the ground. So far, eveything is OK, the model is a blast to fly!! Now I'm willing to try different props. An APC 14x11 is on the way, but I the best prop wuold be a 13x13. Does anyone have an idea where I can get such prop? I was looking at a Bolly, but it seems they're out the business. Any help is apreciated. Thank you! Marco
Posted on: 10/27/2010 4:26 AM by Author "marcoferretti" in the forum "ARF or RTF"
http://www.rcuniverse.com/forum/fb.asp?m=10097087

RE: CMP BF109F BUILDING THREAD
This is how I diit with just one servo. just get the 6 poins horn and plug your linkage on two adjecent horns and cut away the unused. Hope the drawing is self explaining. When the servo turns clockwise, the linkage on the bottom will have plenty of travel and the the one on top will have very little. With this setup I achieve almost 45° on the bottom flap and less than 20 on the upper.
Posted on: 6/9/2010 3:34 AM by Author "marcoferretti" in the forum "RC Warbirds and Warplanes"
http://www.rcuniverse.com/forum/fb.asp?m=9791219

RE: CMP BF109F BUILDING THREAD
Hi Seve, stab and fin are perfectly 90°, but when I placed the wing on the fuse, at fist sight fit was very poor. I had about 0.17" gap between the right saddle and right wing and about 0.1" on the left to put wing and stab paralled. I'll post you some pictures. Don't know how early series was, but my BF has many issues to fix and tons of work to do on it. This is the secong big issue I fixed. The first one was a wrong assembly of the left wing airbrake servo hatch. I had to cut, and rebuild, unfortunately I took no pictures to show you. My latest ARF before the CMP BF109 was a GP Superskybolt: sorry to say it, but quality of a Great Planes is definitely another story. Marco
Posted on: 3/23/2010 12:48 PM by Author "marcoferretti" in the forum "RC Warbirds and Warplanes"
http://www.rcuniverse.com/forum/fb.asp?m=9605216

RE: CMP BF109F BUILDING THREAD
Hi all! My BF109 is on the way to completion. Thanks to all of you for the useful info I found in this thread. On my BF I had an issue I would like to discuss: the wing did not perfectly fit on the fuse, it did not "comfortably" sit on the saddle leaving a huge gap. And... I had lots of trouble to achieve a good stab-wing allignment, the were not parallel at all! So, I added a spacer on the rignt saddle to allign the wing with the stab and filld the gap with microballons and resin, just like a full-build. I will post some pics tomorrow. Did any of you experience the same? Thanks [;)] Marco
Posted on: 3/23/2010 5:16 AM by Author "marcoferretti" in the forum "RC Warbirds and Warplanes"
http://www.rcuniverse.com/forum/fb.asp?m=9604442

RE: Super Skybolt ARF
@ orangepeal: it's just fantastic to se a bipe "smoking"!! I first fitted the engine compartment with lead to get che correct CG, just unuseful weight. I had a 12V pump, so I bought a brushed motor controller, plugged on a free channel in my RX and that's it! I suggest you maiden your Skybolt first, then you may thing about of fitting a smoke system. For your first flight, just set the CG on the foremost point. It will surely be nose-heavy but that's OK, it will be very easy to handle and and will land on its own! Get confident with your bird and gradually remove weight to shift CG back till you feel the model is really yours. @ rock: You just did right, informing other modellers of these issues is very important!! Thank you!!
Posted on: 12/11/2009 7:19 AM by Author "marcoferretti" in the forum "ARF or RTF"
http://www.rcuniverse.com/forum/fb.asp?m=9321366

RE: Super Skybolt ARF
Hi Rock! The vertical piece and the vertical plate are things I added to place the smoke-pump and battery the most forward to get the correct CG without adding lead. Let me call it "useful weight". When mounting the kit, I did reinforce all glue joints in the firewall area. I don't know if this was helpful or not. Next, I brushed finishing-resin on the firewall before installing engine mounts. Even the best ARF manufacturer will say its models are perfectly fuelproofed, it is not so. Did the resin help to make the liteply firewall more robust? Could be. My firewall is actually holding the engine, the smokepump and battery weight, all these items plus mounting plate etc.. are worth about 2.4lb. The acceleration of flight/aerobatic maneuvres applied to such weight will result in an impressive force applied to the firewall itself. So far I had no issues, hope I'll never have any... BTW, I agree a firewall should not be made of liteply. True this ARF is "the" lighter version of the kit-skybolt, but there is no reason in making the front area so light if some ballast is to be added in any case to get a correct CG. Oh yes, I got it: it's just a matter of cost....
Posted on: 12/10/2009 8:26 AM by Author "marcoferretti" in the forum "ARF or RTF"
http://www.rcuniverse.com/forum/fb.asp?m=9318657

RE: Super Skybolt ARF
My Superskybolt has about 90-100 flights, it's my everyday flyer! It's powered by an OS91 4 stroke. Performs beautifully and during my monthly inspections I see no failures in the engine compartment, no signs of firewall weakness. My firewall holds the engine, the smoke pump and battery. These items are in the engine compartment because of the nose-weight needed to balance. [image]http://www.baronerosso.net/forum/attachments/aeromodellismo-volo-scoppio/110758d1245072303-bipes-mania-skybolt_3.jpg[/image] [image]http://www.baronerosso.net/forum/attachments/aeromodellismo-volo-scoppio/106180d1241680355-bipes-mania-smoke.jpg[/image] If you feel that firewall needs to be reinfornced, just do it, but the Skybolt is strong enough to hold a .91 engine for hundreds of flights. Enjoy this bipe! Marco
Posted on: 12/10/2009 3:30 AM by Author "marcoferretti" in the forum "ARF or RTF"
http://www.rcuniverse.com/forum/fb.asp?m=9318438

RE: top flite corsair build questions
[quote]ORIGINAL: duber3 Hi Marco!! for my Top-filte GS corsair I used the balance per the manuel but I also used this method [link=http://www.rcuniverse.com/forum/m_708060/anchors_708060/mpage_1/key_vanessa/anchor/tm.htm#708060]Vanessa[/link] it's very accurate hope this help bye! [/quote] That's great! I'll build the CG fixture check the Corsair once more [;)] THANK YOU!
Posted on: 9/3/2009 9:12 AM by Author "marcoferretti" in the forum "RC Warbirds and Warplanes"
http://www.rcuniverse.com/forum/fb.asp?m=9066559

RE: top flite corsair build questions
[quote]ORIGINAL: mistral12 I am finally at the point of final paint and trim. I am planimg to use stencils for the stars and bars and lettters. Does anybody know the size of the star and bars and the lettering/numbers. The decals in the kit seem small. I'm planning to use GetSetencils. [/quote] Mistral, just post some pictures, please!! [8D] Attached is a template I drew with Autocad, it is sized for the TF Corsair. You can print youown sencils. I also have dxf of it but I can't upload it...
Posted on: 9/3/2009 3:37 AM by Author "marcoferretti" in the forum "RC Warbirds and Warplanes"
http://www.rcuniverse.com/forum/fb.asp?m=9066275

RE: top flite corsair build questions
CJ, thank you for you help and for linkng to the mods you posted. I will get the 615s off the wing tonignt and see if it's worth repairing them. Terry, In case the 615s are not worth repair, I think I'll move to the Sierras. As far as I know, these are not direct replacement. What mods will be required to fit them in a wing built around the 615s? I suspect I have to drill out the spar to clear the cylinder...
Posted on: 6/16/2009 8:55 AM by Author "marcoferretti" in the forum "RC Warbirds and Warplanes"
http://www.rcuniverse.com/forum/fb.asp?m=8856081

RE: top flite corsair build questions
[quote]ORIGINAL: crashproof I suspect your issue is because you balanced with the gear down. When you do this then put the gear up it can become tail heavy which is what you experienced. Balance the plane on the recomended spot with the gear up and the plane inverted, make sure in this orientation it is alittle nose heavy, then when the gear goes down for TO and Landing it will only become alittle more nose heavy which is a good thing. I think that will solve your problems. Kevin. [/quote] Thanks Kevin! You are right, I balenced gear down. During maidend flight, we did non retract the gear for the obvious balancing reasonos. I will re balace it gear-up. And, talking about landing gears... what landing gear may I fit without or with little mods? Sierra and CJ require some work on the main spar to fit... Any ideas? Thanks! Marco
Posted on: 6/15/2009 8:30 AM by Author "marcoferretti" in the forum "RC Warbirds and Warplanes"
http://www.rcuniverse.com/forum/fb.asp?m=8853101

RE: top flite corsair build questions
Maiden flight on saturday! I had some balacing issues, I was about to loose the model. I set the CG per plans but slightly nose-heavy. Once in the air, the bird had all the symptoms of being tail heavy! Abrupt stall tendency. It drops the left wing and enters a violent spin. No way to use the flaps: the model stopped in the air, lifted the nose, then left down and spin.... BTW, at a safe speed it is a pleasure to fly! Landing was a real adventure: it needed some down elevator, once on the groung, it bouced and stopped upside down. Fortunetely I had no damage at all, except for the landing gear. These Robart 615 are real poor stuff: they came up bended.... I surfed some forums to look for other maiden flight reports of the TF Corsair and all seem to suffer the same issues: tailheavy. I suspect the calculated CG is too optimistic, I mean too far aft. What do you say? What I suggest is to balance it very very nose heavy. You are always on time to remove some ballast.
Posted on: 6/15/2009 7:07 AM by Author "marcoferretti" in the forum "RC Warbirds and Warplanes"
http://www.rcuniverse.com/forum/fb.asp?m=8852981

RE: TF Corsair .60 Build
[quote]ORIGINAL: ArrowNaughtic Good point on the weight. Mine will be electric but I have no idea which motor/prop combo i will be using until the plane is virtually finished. I am in the final sanding stage before covering and installing the moving surfaces. I was hoping to have mine done for our clubs funfly on June 20 but realistically I don't see that happening. Once its all close to finished then i will be able to weigh it and decide on the motor and battery selection. I am hoping for a AUW of about 9 lbs. I also decided to not go the military color route but rather want to do a different design based on a refurbished F2G that is still flying today. I will wait until she is finished to post pics and hold off on revealing my intended color scheme. _____________________________________________________________________________________ [b]Of all the things I ever lost....................................... I miss my mind the most! [/b] [/quote] What do you mean by "good point on the weight"? Too heavy? There shoudl be somewhere the build-log of a guy who went electric here on RCU or on RCGroups. Why electric? What I can tell you is that you need plenty of thrust on takeoff, especially if you're flying over grass. Then, a gentle climb to pick up speed and that's it. If you have not planned yet placement of all stuff inside, just shift all weight forward (battery, receiver, retracts valve, etc...). Mine is powered by a Saito FA125 and still I had to put about 2.5lbs of lead in the engine compartment to get the right CG (slightly nose-heavy with gear down and dry tank). When gear is retracted, CG is as per manual. I prefer having nose-heavy planes on their maiden, they are a little less maneuvrable but much more stable. I'm feelng OK withe the CG I have set, I won't change it. Good luck with your build!! PS: the refurbished F2G is a very good idea!! I think your model will be unique. Just post some pics, I'm curious about it!
Posted on: 6/4/2009 12:18 PM by Author "marcoferretti" in the forum "Kit Building"
http://www.rcuniverse.com/forum/fb.asp?m=8825181

RE: TF Corsair .60 Build
Well, my Corsair is quite heavy, 11.5 lb but it flies! It flies well but you have to fly it from take off to full stop after landing. No time for thinking, no time for relaxing. BTW, it is very realistic and the approach with full flaps deployed is a beauty. Flaps are very effective, they slow down the bird and allow a very steep approach. The only issue with this warbird is size-to-weight: if you go with plent of scale details, paint job and weathering; no way out, it will be heavy. If I was the designer, well.... perfect size would be 70" winspan.
Posted on: 6/4/2009 10:42 AM by Author "marcoferretti" in the forum "Kit Building"
http://www.rcuniverse.com/forum/fb.asp?m=8824951

RE: TF Corsair .60 Build
Hi Guys! Lovely kit, isn't it? This is how mine came out. Maiden flight last week.
Posted on: 6/3/2009 7:08 AM by Author "marcoferretti" in the forum "Kit Building"
http://www.rcuniverse.com/forum/fb.asp?m=8821631

RE: Super Skybolt ARF
For maiden and first flighs I set the CG slightly forward. When confident with the new bird, I removed weight from the nose to feel the plane just right. I think fine tuning CG is somekind of subjective matter.
Posted on: 5/30/2009 5:41 AM by Author "marcoferretti" in the forum "ARF or RTF"
http://www.rcuniverse.com/forum/fb.asp?m=8810814

RE: top flite corsair build questions
[quote]ORIGINAL: alpinestar I'm ready to re-maiden my TF corsair... last flight ended a little hard after I obliged a reqeust from the peanut gallery to "put 'er in a spin!". I couldn't get it out without the help of the ground. All rebuild & just about ready to go. Anyway, what is the concensus on balance point? (gear up or gear down?) the manual reccomends 4.25" with the gear down... just seems strange to balance it gear down knowing the cg will shift back when the gear is retracted. Double-checking before I put it in the air again. [/quote] Balancing gear down is the way to go! And if the model is slightly nose heavy when gear is down, even better. You want a stable model on take off and landing. A nose heavy model sets in a lower angle of attack on its own, that's what you'ere looking for to prevent stalling.
Posted on: 5/8/2009 11:15 AM by Author "marcoferretti" in the forum "RC Warbirds and Warplanes"
http://www.rcuniverse.com/forum/fb.asp?m=8751304

RE: top flite corsair build questions
Joe, it shoud take off on 5,1Kg (11.24lb). I'm on the heavy side... but fortunately the Saito 125 should give me hand in case of trouble... hope so... What about your final weight?
Posted on: 4/7/2009 9:34 AM by Author "marcoferretti" in the forum "RC Warbirds and Warplanes"
http://www.rcuniverse.com/forum/fb.asp?m=8657386

RE: top flite corsair build questions
Joe, woderful job!! Some time ago, I posted some work-progress pictures of my TF Corsair. Here's the finished plane, I'm about finish the assembly.
Posted on: 4/7/2009 8:11 AM by Author "marcoferretti" in the forum "RC Warbirds and Warplanes"
http://www.rcuniverse.com/forum/fb.asp?m=8657201

RE: Super Skybolt ARF
[quote]ORIGINAL: kneeforu Hey guys. Just did the maiden flight yesterday with my new Skybolt and it flew just as expected. I used standard set-up with an OS 91 two stroke. Flew great with just a click or two of up needed. Laterally it was fine (but I had added about 2 oz of weight on the left side in the servo compartment). My question is prop for the OS 91. I have a 13x8 master airscrew on now and after two flights, it seems a little fast. I like a lot of pulling power and not so much speed, so I was thinking about a 6 prop, but I am worried a 13x6 will be too much rpm. Does anyone have a 14x6 on a OS 91 and how is that performance? Thanks! - Bill [/quote] I have a 14x6 on the very same OS91: runs very well and pulls really hard, give it a try. BTW I'll move to a 14x7, the 6 prop is a little too slow for me.
Posted on: 3/17/2009 4:18 AM by Author "marcoferretti" in the forum "ARF or RTF"
http://www.rcuniverse.com/forum/fb.asp?m=8586502

RE: Super Skybolt ARF
Saturday maiden flight of my Skybolt. Setup is all "standard" with and OS91 engine. As I gave power, she tracked straight with no bad tendecies, and no right rudder correction. A touch of up elevator ad she was flying! Trimmed the model (elevator only) and flew around for a while to get a little confident. What a great flyer! She does exactly what you tell to do, nothing more, nothing less.. Time to land, reduced power to slow her down and , alligned on the runway.... that's all I did and she made the most beautiful 2 point landing I ever seen!! What a grat machine... that's my new everyday flyer!
Posted on: 3/16/2009 4:48 AM by Author "marcoferretti" in the forum "ARF or RTF"
http://www.rcuniverse.com/forum/fb.asp?m=8582673

RE: Nick Ziroli P-40
I just found everything I needel, thanks again? There are couple of very interesting threads! I was just having a look and reading through the posts.
Posted on: 2/6/2009 12:35 PM by Author "marcoferretti" in the forum "RC Warbirds and Warplanes"
http://www.rcuniverse.com/forum/fb.asp?m=8445314

RE: Nick Ziroli P-40
Good start! Thank you! I've been surfing on Rcscalebulder.... but not enough! I'll have a look in Ziroli's section. M.
Posted on: 2/6/2009 12:21 PM by Author "marcoferretti" in the forum "RC Warbirds and Warplanes"
http://www.rcuniverse.com/forum/fb.asp?m=8445277