View Full Version : Turbine Otter
01-29-2004, 08:45 PM
Well ordered a 6" Unionville Otter yesterday...Was going to order the 8 ft-er but since its an experiment thought the 109.00 bucks would be less of a hit if it doesn't turn out..( But I know it will I force to... :D )...
So my ? is what would be your suggestion to balance it out... The engine will now be 6" ahead of the original firewall....(have to make a new firewall and cowl, the nose will stretch about 12" ahead of the windshield)
I'm going to use a Enya 50 CX because its very light for its power..(normally I would put a 4-stroker in this type of craft but I need to minimize the nose weight)
So I'm thinking of putting the Rud and Elev servos in the tail and moving the Bat to where ever it balances out!!! Don't know if there is a better idea out there....
I'll post some pics as I go along, figure it'll take about 3 months to finish...I work during the day, so can't go great guns on it.. You lucky retired old farts :wink:
a skinny nose like that cries out for an RCV..........
Saw one with a geared webra 60 (I think).......
01-30-2004, 05:04 AM
Putting the servos in the tail would be a very good idea. I built the radial 6' Otter last year and powered it with a TT 46 pro and I had to add 3 oz to the TAIL to balance it. I would even go so far as to sheet the rear part of the fuse too if building the turbine version. It will look nicer too with the fuse completely sheeted. At 6.5 lbs, mine flies like a glider. I added slotted flaps and a mix on the transmitter that drops the ailerons 1/2 way when the flaps are deployed. It can fly VERY slowly.
01-30-2004, 03:03 PM
Jolly did you sheet the rear of yours... I know the kit is to boxy in the rear and I would like to round it up a bit more...But need some X sections of it... I guess use 1/16 to sheet, or if I used 1/8 I could getter nice and rounder...
The TT .46 probably has more than enough power for it ?
01-30-2004, 06:44 PM
No, I didn't sheet mine, but I did put extra 1/4" sticks on the top two corners of mine. In effect making the the corners 1/2" X 1/2" with triangle stock for the "inside" corner. This gave me lots of material for rounding off the upper part of the fuse. Of course, the real Otter is quite oval shaped in the rear, but what I did made the kit look a lot better. I believe that the sheeting on the forward half is 3/32. I would use the same size on the rear. It's a nice flyer. My TT 46 for some reason doesn't run very strong. It was extremely tight when I first got it and I don't think it has really broken in yet. It has plenty of power for normal use but for example it runs out of airspeed and falls out of loops. This winter I am going to re-engine it with an OS 46SF and put the TT in a trainer I'm building at school with some of my students.
02-01-2004, 09:37 AM
Jolly, forgot to mention nice looking Otter... Thought it was the 8' one at first, good thing you had a transmitter in the picture for reference....I can see your rear fuse is way rounder than the kit.. and looks good... Think, thats all I will do..With the sheeting rounded to, it should look OK...
Just wondering if you have a pic of the slotted flaps???? And what did you use for hinges??
And last but not lease......what did you use for a muffler??
I hope your not an English teacher cause my posts are terrible. :oops: .O ya shouldn't your Otter be on floats!!!! :D whats thats wheel crap on it :wink:
02-08-2004, 07:52 AM
Sorry for the slow response, been quite busy as of late. I've attached some photos of the my flap setup. The hinges are made up of 1/16' aircraft ply with steel pins. It came from Andy Lennon's book on model aircraft design. If you want to go this route I can scan the diagram and send it to you. The book a good reference to have.
The engine is inverted with an inverted Bisson muffler. Only the exhaust extension can be seen out the bottom. It's a very quiet setup too.
I have the Unionville 6' Beaver on floats permanently and liked the way it flew so much that I wanted one on wheels. It seemed kind of dumb to build another Beaver, so I built the Otter instead. I hope you will forgive me for putting a wheeled aircraft in a float plane forum. To see the Beaver, go to my album.
02-08-2004, 07:55 AM
The flap setup
03-04-2004, 02:56 PM
Well here is a pic from a couple weeks ago... I have the fuse sheeted now and will start on the wing sheeting....
03-09-2004, 12:50 PM
I am building a 6' Otter too and I rounded the fuselage off and planked it.
Here are is a pic. (Hope this works)
03-09-2004, 04:49 PM
Those sure are going to be nice looking Otters. The Turbo Otter looks really good cf-drg. Never really liked the looks of the Turbo Beavers and Otters but they grow on you after a while. I have the 8" Turbo Beaver from Unionville squirrelled away for a future project. To be done in the colours of my abatar.
04-27-2004, 10:40 PM
I have the same 8' Turbo Beaver kit under way and there's a lot of detail that's missing from the kit plans, but I have loads of actual detail for reference. One of my RCV engines will be the power, even had to extend the firewall an inch. My unit will be sheeted with 1/16th, fuse and wing.
Lots of paint schemes available, yours looks great, assuming you have more pics of that bird. Curious, what's the registration on it .?? :?:
There is a couple of good websites as well covering all kinds of Beavers, can send to you if you want.
04-28-2004, 05:39 PM
Ooh! An RCV 90 with a scale 3 blade prop; that would be nice! I got my photos from the Beaver Tails (www.dhc-2.com). The Turbo Beaver in my Avatar is registered C-FOPE. It's on Neil's site and on one other that I have found as well, but can't remember at the moment. Neil also has photos of C-FASA as well and I'm torn as to which one I like better. Oh well, I haven't even started the kit yet so there's no rush to decide. You could post the sites you know about. I'm sure there are others who frequent RCC that would like to visit Beaver related sites.
A photo of C-FASA
05-08-2004, 10:51 AM
Just testing some j-pegs pics for my Turbo Otter, so here are some of my Turbo Beaver i'm building right now too....Need to size up images so I know how big or small they will appear in this forum....
The Beaver has a 36" WS and a .15 AP wasp...
The reason I even built it is I bought the engine in Las Vegas and had to put it in something....
05-08-2004, 11:20 AM
OK finally got pics of where i'm at now....A wee bit slowwer than first thought... :o ...
05-10-2004, 09:27 AM
I'm going to post pics of mine when I take some new ones.
How are you going to run the elevator control rods? I ran the red and yellow Sullivan Golden Rods through the front part of the stab dorsal. Then I laminated 1/16 sheet on both sides and sanded it down.
Came out OK.
05-10-2004, 03:46 PM
I'm mounting the servos in the tail.. As you can see from my second picture, the tail servo is on the right hand side and the elev servo on the left... As far as my elev push rod.. I'm connecting an ugly rod from the servo to the elev..It will probably stick out like a sore thumb... But O well... I'm just playing around with this build anyways...
05-11-2004, 07:57 AM
Here are some pictures.
The back decals were made with a colour laser on Avery clear stickers. When I put them on, I used Windex. The liquid had not yet evaporated, thats why they look milky. About thress days later, the Windex dried up, the milkiness disappeared and now it looks pretty good.
05-11-2004, 03:48 PM
OOo La La .....Nice otter smark... But I don't now what those wheel things on the bottom are for, how do you takeoff ond land on water with it.. :wink: Whadya have for power??
05-12-2004, 07:26 AM
Those round things are the semi flotation devices. They are designed for limited depth marine applications. Actually the US Army did put skis on an Otter around the wheels and made it water ski. It apparently worked well as long as the plane kept moving. This is another way of saying that it sank as soon as the plane slowed down.
I have a Magnum Pro 45 in the nose. The plane weighs 7 pounds according to my bathroom scale, so I think it should work well. I have built in the extra mounting pads so I can install the floats, and at that point I'll think about my 50SX.
01-24-2005, 07:43 AM
How is the progress on the Turbo Otter? I lost my Otter last year to pilot error (don't try to fly your Otter like a Somethin' Extra when you're really close to the ground, it doesn't have the quick response like the SE :oops: ). It is repairable, but it is pretty badly damaged. I'm going to build another Beaver to replace it.
01-24-2005, 04:40 PM
Oooo the Turbo Otter is on hiatus for re-tooling.... No ... Have it all covered and need to build floats for it now... But have started on my 120" WS Bellanca... So will work on that for awile... then will go back to the Turbo in March....
01-24-2005, 11:15 PM
Wow....your guys otters look awesome, i wish that i had thought about trying to round out the fuselage in the rear a little bit. The boxiness in the rear was irritating me throughout the build. I am also fascinated about lengthening the nose for the turbine look...the otter that i am modelling mine off of has just been sent to Fort Frances for a turbine refit, so i think that the model should be next. PLLEEAAASSEE keep us updated, i'd love to hear how that works out.
I think im just going to finish mine up as is, then wait for the first major crash to add the mods that i want...i figure that i shouldnt have to wait long. :oops: :oops:
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