RE: Engines for Hangar 9 Twin Otter
I went with a Twin-sync setup on mine. LOVE IT and the installation was pretty straight forward. The biggest issue is getting the servo end points set up correctly so you get maximum sensitivity from the unit. I elected to put the sensor magnets in the spinner hubs. I am quite pleased with the operation and the engines are within 100-200 rpm of each other. One other HUGE advantage is that if you have an engine out, the active engine immediately goes to idle. Already saved my bacon on a touch and go. http://www.troybuiltmodels.com/items/WRCTWINSYNC.html
Posted on: 6/17/2012 1:50 PM by Author "kthmarks" in the forum "Twin & Multi Engine RC Aircraft"
http://www.rcuniverse.com/forum/fb.asp?m=11121425

RE: kmp d3 due november 30th i just ordered one
[quote]ORIGINAL: AncientCityFlyer Robbie, I've been working on mine for quite a while now. Off & on for a little over a year. Work keeps me busy. Anyway I'm also doing mine as an AC-47. Here's a few pic's of mine. I was a flt. engineer on one in Nam 67-68 [/quote] Outstanding! Would love to see.......MORE PLEASE!
Posted on: 6/7/2012 6:55 PM by Author "kthmarks" in the forum "Twin & Multi Engine RC Aircraft"
http://www.rcuniverse.com/forum/fb.asp?m=11110682

RE: Pilatus PC-6 Porter Sport 150 ARF
Looks like you're about ready.......I am anxious to see how it performs with that DA50 and the 3 blade prop. It looks great! Hopefully you can get a video of what will no doubt be STOL's ......and post them
Posted on: 5/15/2012 1:25 PM by Author "kthmarks" in the forum "ARF or RTF"
http://www.rcuniverse.com/forum/fb.asp?m=11081925

RE: kmp d3 due november 30th i just ordered one
Thanks for resurrecting this thread. This plane is definitely on my short list and I'm anxious to see how the 20's perform!
Posted on: 5/2/2012 7:09 PM by Author "kthmarks" in the forum "Twin & Multi Engine RC Aircraft"
http://www.rcuniverse.com/forum/fb.asp?m=11066161

RE: Kit for twin Saito 62's?
*** Edit: just saw korvette's post with the link.....Sorry for the duplication I took the twin otter and reworked it to suit my own taste. I striped the covering, glassed and painted it and converted it from A DHC6-300 to a -100 (1966 snub nose). The model came in just under 15lbs (+/- 3lbs over the standard arf) The FA62's are a perfect match for the heavier airframe. Although, I had to do quite a bit of rework to the nacelles to fit them in. A short video.....it was getting late so the quality isn't great. http://youtu.be/kdffK5v5fJM PS....The TF DC3 is on my list as well.
Posted on: 4/25/2012 1:14 PM by Author "kthmarks" in the forum "Twin & Multi Engine RC Aircraft"
http://www.rcuniverse.com/forum/fb.asp?m=11056483

RE: Engines for Hangar 9 Twin Otter
See attached for the modifications I did to accommodate the Saito 62's. Your experience may vary.
Posted on: 4/10/2012 6:35 AM by Author "kthmarks" in the forum "Twin & Multi Engine RC Aircraft"
http://www.rcuniverse.com/forum/fb.asp?m=11035844

RE: Engines for Hangar 9 Twin Otter
Those mufflers may be a good solution. I'll look into it. After so much building over the winter, I think I'm going to enjoy this bird a little before I make any changes. With regard to the finish, it is actually modeled after the Norwegian Special Forces aircraft used from 1967-2001! The plane later got around some and unfortunately met it's demise not far from where I live here in Georgia, US. I found that out after I was well into the project. Good thing I am not superstitious. http://www.719skvadron.no/dhc6/dhc6-news.htm If you're thinking about going with 4 stroke glow, I'd seriously look at the OS FS56 or better yet, the YS FZ70-S. Both have a smaller footprint than the Saitos and deliver more power. The YS has a crazy amount of HP. I went with the Saitos because I already had one of the required two and did not want to incur the added cost. Keith
Posted on: 4/9/2012 7:04 PM by Author "kthmarks" in the forum "Twin & Multi Engine RC Aircraft"
http://www.rcuniverse.com/forum/fb.asp?m=11035298

RE: Engines for Hangar 9 Twin Otter
Below are a few photos. I had to rework the nacelles to get the 62's to fit. I extended the cowls appx 1/2" by adding blocks to the existing firewall and then filled in recessed space that the nacelles originally mounted to with 1/32 ply and filler. In addition, I removed the tank floor of each nacelle and made a new one appx 3/4" lower to achieve the correct center-line relationship of the tank to the carb. I used a combination of maple, basswood and light 1/4" plywood to reinforce the construction after cutting out the floor. I bumped the tanks from 8oz to 10oz and I'm glad I did. My last flight was 8.5 minutes and I used appx 5oz of fuel. With regard to the exhaust, I used a 90 degree adapter (tapped for pressure) with a straight pipe out the bottom of the nacelle. Unfortunately it doesn't sound like a turbine.....more like a hot rod! [:D]
Posted on: 4/8/2012 4:23 PM by Author "kthmarks" in the forum "Twin & Multi Engine RC Aircraft"
http://www.rcuniverse.com/forum/fb.asp?m=11033547

RE: Engines for Hangar 9 Twin Otter
Hey guys......below is a link to my second outing with the Otter. GREAT flying plane. Could not be happier. http://youtu.be/kdffK5v5fJM
Posted on: 4/8/2012 7:48 AM by Author "kthmarks" in the forum "Twin & Multi Engine RC Aircraft"
http://www.rcuniverse.com/forum/fb.asp?m=11032961

RE: Warbird Colors vs Nelson Paints
Both products apply VERY well. Actually, I like the way WBC goes on a little better than Nelsons. HOWEVER......my BIGGEST issue that divides the two has to do with resistance to chemicals. Denatured alcohol will soften the WBC finish (even when the crosslinker has been added) while MEK or Acetone will remove it completely after it's dried and cured. Nelsons is resistant to all previously mentioned and is hard as nails. After all.....who doesn't need to clean up a little oozed out 5 min epoxy? Having alcohol take off the WBC finish was a disappointment for me. Sorry Chuck. Love your stuff but...... Nelsons has my vote.
Posted on: 3/9/2012 4:58 PM by Author "kthmarks" in the forum "Questions and Answers"
http://www.rcuniverse.com/forum/fb.asp?m=10993477

RE: Spartan Executive Kit Build
UPDATES??????
Posted on: 2/14/2012 5:32 AM by Author "kthmarks" in the forum "Kit Building"
http://www.rcuniverse.com/forum/fb.asp?m=10958264

RE: Hangar 9 produced the Twin Otter!
Attached are a few photos of my completed H9 Otter. Stripped/glassed and finished to resemble the Norwegian special forces 057 livery. Twin Saito 62's. The nacelles had to be highly modified to get these engines to fit and to locate the fuel tanks properly. 14.75lbs. Maiden pending the arrival of additional nerve. [;)] [link=https://picasaweb.google.com/kthmarks/Otter?authuser=0&authkey
Posted on: 2/4/2012 12:19 PM by Author "kthmarks" in the forum "Twin & Multi Engine RC Aircraft"
http://www.rcuniverse.com/forum/fb.asp?m=10943135

RE: Hyperion EOS Sentry Battery checker (Lipo, LiFe, LiIon, NiXX)
I just received this from the US distributor. The new unit will also balance cells in Lipo's. http://www.empirerc.com/hyperion-eos-sentry-battery-checker-p-5455.html "Hello Keith, The Hyperion Sentry only gives resting voltage. The New instructions have not been put on the site yet. Your Sentry will come with the newest version of instructions. Regards Team Empire"
Posted on: 1/13/2012 4:52 AM by Author "kthmarks" in the forum "Batteries & Chargers"
http://www.rcuniverse.com/forum/fb.asp?m=10906465

RE: Hyperion EOS Sentry Battery checker (Lipo, LiFe, LiIon, NiXX)
Does this meter REALLY display voltage AND capacity under load? I have not found documentation that indicates this is true.
Posted on: 1/8/2012 9:58 AM by Author "kthmarks" in the forum "Batteries & Chargers"
http://www.rcuniverse.com/forum/fb.asp?m=10897939

RE: Engines for Hangar 9 Twin Otter
I'm in the process of doing a makeover to the H9 Twotter. I am making a DHC6-100 instead of the -300. I did quite a bit of research on engines so hopefully you can benefit. Since I am recovering/glassing/painting, I was not confident the Saitos 40's would perform with the increased weight. The FA-40 appears to be the only 4 stroke engine that will fit without modification. Below is what I found. I elected to go with the Saito FA62A's since they are in the same case as the FA56, and I already own one of the required 2. I also extend the cowl instead of cutting into the firewall as I also increased tank size from the standard 8oz tank to 10oz. The line of the prop still appears to be in line with the fuse in a scale location. I'll post pics when I get some. Disclaimer.... the dims for the Magnum below is the best I could determine. Info for that engine is hard to find. Below is my target model [image]http://i90.photobucket.com/albums/k262/kthmarks/DHC6-100.jpg[/image]
Posted on: 12/11/2011 6:18 PM by Author "kthmarks" in the forum "Twin & Multi Engine RC Aircraft"
http://www.rcuniverse.com/forum/fb.asp?m=10854907

RE: Hangar 9 produced the Twin Otter!
POST PHOTOS!
Posted on: 4/8/2011 10:13 AM by Author "kthmarks" in the forum "Twin & Multi Engine RC Aircraft"
http://www.rcuniverse.com/forum/fb.asp?m=10451111

RE: Hangar 9 produced the Twin Otter!
[quote]ORIGINAL: thailazer kthmarks..... A snub nose would be a pretty quick project. Get some blue dock-billet Styrofoam, carve it to shape with a saw and a sure-form rasp, and then fill it with microfill before you put on a layer of light glass. I had my whole fuse carved out and micro-filled in one evening. Sat in a lawn chair next to the full scale ship as I did to make sure I got the lines
Posted on: 1/11/2011 7:09 AM by Author "kthmarks" in the forum "Twin & Multi Engine RC Aircraft"
http://www.rcuniverse.com/forum/fb.asp?m=10255010

RE: Hangar 9 produced the Twin Otter!
[quote]So..........are you still planning on the -100 conversion ? Joe M. [/quote] If I build one it will definitely be a -100. I like the camo version in the pic below.
Posted on: 1/10/2011 7:25 PM by Author "kthmarks" in the forum "Twin & Multi Engine RC Aircraft"
http://www.rcuniverse.com/forum/fb.asp?m=10254235

RE: Hangar 9 produced the Twin Otter!
Joe, Thank you. I will start reading. I see in one of the early postings (on the other board) where I am not alone about preferring the -100 model (round nose). It's just a nicer looking profile. Thanks for pointing me in the right direction. BTW....we've got about 6"of snow here in Atlanta today......you guys up north......CAN HAVE IT! ;o)
Posted on: 1/10/2011 3:16 PM by Author "kthmarks" in the forum "Twin & Multi Engine RC Aircraft"
http://www.rcuniverse.com/forum/fb.asp?m=10253578

RE: Hangar 9 produced the Twin Otter!
I am seriously considering this plane and would be going with glow engines. From a previous thread apparently Saito 40's fit well. Based on that dimension it looks like a few models of the OS FS would fit as well (I am a 4 stroke junkie). My only complaint about the design of this plane is the nose....and well, choice of finish. While this plane is modeled after a DHC 6-300 (pointed nose), the rounded nose of the DHC 6-100 profile is WAY more aesthetically pleasing IMO. It looks like some rework on my part is in order.
Posted on: 1/10/2011 9:57 AM by Author "kthmarks" in the forum "Twin & Multi Engine RC Aircraft"
http://www.rcuniverse.com/forum/fb.asp?m=10252824

RE: Hangar- 9 Otter Help!
[quote]ORIGINAL: Pete Bergstrom Actually we've got one flyting on a couple of Saito 40's and they are a perfect match.  Lightweight and swing 11 x 6 props you get all the power you need. Pete [/quote] I would LOVE to see photos of the installation if possible.
Posted on: 1/9/2011 9:52 AM by Author "kthmarks" in the forum "ARF or RTF"
http://www.rcuniverse.com/forum/fb.asp?m=10250380

RE: EASYTIGER MODELS DC3/C47
Did you ever receive this? Update?
Posted on: 8/22/2010 8:19 AM by Author "kthmarks" in the forum "Giant Scale Aircraft - General"
http://www.rcuniverse.com/forum/fb.asp?m=9951320

RE: Focus Sport 110 YS Powered
[quote]ORIGINAL: darylm44 ..............Magnum 120 4 stroke is stronger than a Satio 120. [/quote] I have it proped with a 15x8. We also have this thing down here that's called humidity ;o)
Posted on: 7/31/2010 9:13 AM by Author "kthmarks" in the forum "RC Pattern Flying"
http://www.rcuniverse.com/forum/fb.asp?m=9900957

RE: Focus Sport 110 YS Powered
I fly mine with a Saito 120 with 15% fuel. I could not recommend anything lower in hp. It flies very well but the vertical performance is certainly not unlimited. I think a 120 2 stroke would carry this plane well as would a YS110. A YS91 might do the trick with 30% and was proped correctly.
Posted on: 7/29/2010 5:39 AM by Author "kthmarks" in the forum "RC Pattern Flying"
http://www.rcuniverse.com/forum/fb.asp?m=9896030

RE: Focus Sport 110 YS Powered
[quote]ORIGINAL: maynardrupp I called Central Hobbies yesterday and was told that the YS 115 might be available by September or October. I then decided to order a Focus Sport and power it with an OS 120AX. Next I was told that the Focus Sport is no longer being produced. They do have a few ARC planes in stock though. Well, I can cover as well or better than they can but I am not sure I want to get involved with a plane that has no repair parts available and they don't supply full size plans so I can make what I need. What a dilema.[&o] [/quote] I've been flying mine for a couple of seasons now......I have not required any replacement parts....if you're concerned, see what they'll charge for an extra cowl and wheel pants....for grins. I have a Saito 120 in mine...it flies great! The 120ax will be plenty.
Posted on: 4/28/2010 6:40 PM by Author "kthmarks" in the forum "RC Pattern Flying"
http://www.rcuniverse.com/forum/fb.asp?m=9696130

RE: Focus Sport 110 YS Powered
[quote]ORIGINAL: darylm44 Finally had time to work on the Focus again. Found that the JR 821 servos listed as a Good Choice in Post 84 are to deep to fit in the wings or the tail. Had to make spacers to fit under the servos in order to use them............. [/quote] with regard to the servo's in the fuse for the elevators......I painted mine black and they blended well with the servos.
Posted on: 4/25/2010 1:09 PM by Author "kthmarks" in the forum "RC Pattern Flying"
http://www.rcuniverse.com/forum/fb.asp?m=9687505

RE: Cub As a trainer
My first trainer was a SIG Rascal 40 with a saito 62 in it......it was a great plane to learn on. I spent a lot of time on a simulator as well.
Posted on: 8/23/2008 12:23 PM by Author "kthmarks" in the forum "Beginners"
http://www.rcuniverse.com/forum/fb.asp?m=7876977

RE: Don Smith A-26
I'll give you $200.00 for it and pick it up...[8|] Some guys have all the luck....great find
Posted on: 2/11/2008 7:54 PM by Author "kthmarks" in the forum "Twin & Multi Engine RC Aircraft"
http://www.rcuniverse.com/forum/fb.asp?m=7060596

RE: Don Smith A-26
Keep posting....I'm a subscriber and enjoy seeing your progress. I'm working on getting up the nerve to start one of these.....
Posted on: 11/22/2007 12:27 PM by Author "kthmarks" in the forum "Twin & Multi Engine RC Aircraft"
http://www.rcuniverse.com/forum/fb.asp?m=6658720

RE: Top Flite B-25 ARF (Tecnical, tips, suggestions)
Not to Hijack the thread but...... B25 H....part one http://www.youtube.com/watch?v=Lxh9VlTbhLE B25 H....part two http://www.youtube.com/watch?v=iortYQMJYjs B25 H....part three http://www.youtube.com/watch?v=OgNmSMtMx0E
Posted on: 11/15/2007 8:53 PM by Author "kthmarks" in the forum "ARF or RTF"
http://www.rcuniverse.com/forum/fb.asp?m=6630704