norm

Call Robart?

kochj

Looking at the specs of the KMP tigercat....
Specification:
Length :1840 mm(72.4" )
Wing Span :2105 mm(82.9" )
Wing Area :60.98 sq. dm 980 sq inch..
6.56 sq. ft
Wing Loading :172.2 g/sq. dm
56.5 oz/sq. ft
Flying Weight :10.5 kg(23.2 lbs)

Guys are using 26cc to 20 zenoahs with good sucess....
I am sure that this plane could easilly accomidate a gas engine....
I am thinking about it...

timothy thompson

My Feedback: (1)

just scratch build the interior. i have a wing and its too small. they make a ziroli but its too big.

timothy thompson

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heres a 1/72 corvette. no not the car a little known ww2 escort vessel no shes not for sale. need british Flag a green maple leaf on the stack and well call her donel now i need a glass case for the bismarck (money) and Iill be ready for more. its what i do to take a plane break. the gentlemans name is there he actually served on this ship and is an award winning modeler himself

timothy thompson

My Feedback: (1)

ill try to load a few more here. I WAS AT THE LHS AND THIS OLDER MAN startd aconveration about ww2 he built museum models for chicago , henry ford ect.he asked if id look at his corvette. guess what i ;paid for it. it requires a admiralty flag, he calls me to night and had a 6 ft diorama of the uss esssex tied up; with a dd. he has nazi memorbelia and said id rather have a younger person enjoy this stuff. im picking up pistols uniforms and models for a paltry sum. '

reason i posted here is i dont want to ship guys to bug me . IMnever selling any of it! got more screws for the b-25 nd orderd a bvm mig 15 today. good day. My wife handed me 4 grand and said get the mig you deserve it! im the luckiest guy in the world!

timothy thompson

My Feedback: (1)

here is the uss essex with destroyer escort all planes have scale gear! the essex is in a glass case ill get better pics. the essex is 1/150 scale

boss_rc

My Feedback: (144)

Has anyone actually installed the new OS 70 Ultimate engine yet in this model and confirmed that the cylinder does in fact fit within the cowl without opening for clearance? Also, there are some reviews out there that claim this engine needle and pump system is near impossible to set up and tune for smooth and reliable running throughout the usable RPM range ... anybody have that problem. I was headed down the Ultimate road but having some second thoughts.

sekkenes

I have thought about using this engine to. I have one of the Ultimate's in a Reactor 3D from GP. It was a little more hassle to run in and tune but once I did it it seems to be a huge powerplant. I'm running a 14/6 propeller!! Strooong.

Yngve, Norway

europatc74

My Feedback: (6)

Looking for a couple of WWII pilots to fit the model. The pancake dudes are out. Prefer prepainted. Any suggestions/sources?? Thanks.

BadLemon

My Feedback: (37)

Go to www.wingspanmodels.com they have a set of painted pilots and gunners, pricey but I think they are worth it. If you look back in this thread some of the guys are using them and have some pic posted. I just received my B-25 yesterday looking forward to starting it soon but I want to finish my VO-10 arf bronco first.

sevans16

Well, since no one has posted today, I got a set of retracts on Back Order, one OS FS-81@ and a few servos for my build today. I hope to get her started next month. once I get some stragglers off the building table.

camdyson

o.k. - took the plunge and cut the bomb bay doors out, went fine. Will add a few secondary stringers in the fuz to make up for those removed - don't want stress cracks at the bay corners, or the tail to fall off! So, now I realise I'm short a channel with my JR PCM 9x II (9303 to you Yanks), and will have to Y the nose steering off rudder.

If anyone's set up a twin bomber with flaps/retracts etc on a JR 9303/9x II radio, I'd be keen to hear their Tx setup.

Plan so far is: (I'm at work, so order may be wrong...)

Throttle
Aileron (on y-leads)
Elevator
Rudder (on y-leads)
Gear
Aux 1 - Flaps (via matchbox)
Aux 2 - Gyro gain
Aux 3 - Throttle 2 (allows separate trims and throttle curves)
Aux 4 - Bomb bay

This actually helps in one respect - the gyro is now "controlling" both rudders and ground steering directly, so should work on ground and in air without mixing. (never had a gyro, so correct me if I'm missing something!)

Up to 14 servos so far, matchbox, gyro, receiver, 2 batts, 2 switches......

Cam

kochj

Here is a comparison picts between the saito 100 and the SPM 26cc gasser

europatc74

My Feedback: (6)

Need to know..What size (lengths) Y extensions are you using and where?????? Taking the easy way out...

norm

Cam,

You should use a match-box on the engines (save a channel), easy access to it, under the cokpit (secure the cockpit floor with velcro) and you may access the match box for your engine control. Once it is set it will be permanent and easy to adjust from time to time. Specially if you fit your canopy with magnets. You are the one who made me think about magnets previously in this thread. You will then save a channel for "brakes". Another matchbox should be used on the flaps so you can adjust them prcisely and have the exact same extra lift on both sides when using flaps. They sell match box in kits of 2. If you intend to fly this plane on paved runway, for some reason it loves to roll and the 2 engines idling still pull the plane on the ground.

Normand

norm

Hello Kochj,

How much cowl will you have left? Do you intend to install a cowl? You will not be able to fit an engine mount on the firewall unless it is a custom made part, those engines are way, way too big! Have you checked that?

Normand

Bill Giulian

My Feedback: (38)

Normand. I must be a little dumb but, what is a matchbox. Bill.

norm

Hello Bill,

There is no dummys who ask questions and are willing to learn!!!!, the matchbox, http://www.horizonhobby.com/Products...ProdID=JRPA901 ,

The matchbox is an electronic device that enable you to adjust the middle, end and top point of your servos. They are also capable to reverse the servos. In the case of the B-25, the 4 flap servos must be perfectly coordinated so the 4 flaps are set at the exact same position in all settings, normally 3: up, 1/2 flap and full flap. Because servos are mechanic and electronic device, they may not be perfectly coordinated and may open or close at different end points beyond mechanical setting. The matchbox enables you to correct this. Used on the engines you may set the idle mechanically and full throttle may differ because of the servo movement. The matchbos enables you to correct this situation without having to use an additional channel to set the throw electronically with your radio. You still use the radio to set the end and top point of the servo throw. The Matchbox enables you to correct the movement fo the servos electronically to fine tune your set-up. You can visually see differences when setting up servos, specially 4 will never move at the exact same position unless you are very very very very...lucky. The same applys to the throttle servos and may be more critical since the slightest movement of the servo may represent 250rpm.

Normand

timothy thompson

My Feedback: (1)

e power norman

camdyson

Hi Norm,

I was hoping to avoid Matchbox on the throttles, as the 9303 has separate throttle curves and trims for each throttle which would be ideal - able to better match engines over entire rpm range, plus can "fiddle" in flight eg to practice cuts.

Bomb bay adds great access to fuz - no worries mounting gyro now! I'll finish boxing it out plus a bit of detailing then back to assembly.

Given up on press-studs have you? Will post a few pics if I do anything not already posted by you guys. Probably only doing a basic interior (but with those lovely pilots I have), as more interested in the "outside" - panels, weathering etc.

Cam

Bill Giulian

My Feedback: (38)

Chris. Ran into a problem already. Epoxied the two 8 x 30mm grooved nylon alighnment pegs into the holes in each engine nacelle. I have them protruding 3/4" above the base. However, when I plugged them into the wing the holes in the wing are too shallow for the engine nacelle to fit flush on the wing. Should I deepen these hole so the engine nacelle fits flush with the wing or is this the way it is supposed to fit. Seems to me it should fit flush. Please let me know. Bill.

norm

Cam,

I know I'm using the same radio, but the engines perform somehow the same at mid-ranges. The only differences I observed once the low end idle speed is set , the high end behaves differently, and mostly from 65% to 100% throttle. When the high end is set, the servos are gradually adjusted to follow eachother with the matchbox. This eliminates the mid-point curve to be adjusted. Also when you have +/- 200 rpm at top speed didference, this is really neglectable. The real only way to determine using an extra channel is when you have the whole plane set up. After trying "engine out" tests you may consider having both servos on one single channel and favor brakes. This thing at 20-22 lbs has a lot of inertia.

Let me know when you get to the gyro set up you will really enjoy this on take off straight out roll (I could have never kept a plane in a straigh line +/- 1 inch of deviation over 500 feet! before). this thing is amazing. when you test it on a table you will see the rudder counteract the yaw. I beleive even "E-power Tim" should have one, at least for the take off roll or a burnt fuse on one engine!!! HaHA

Normand

timothy thompson

My Feedback: (1)

the part with the metal end should be epoxied in the wood. only plastic should be seen mine fit fine. make sure your on the correct side

norm

About the Pegs,

Did the same mistake, cut the pegs.

iflyf4u1a

My Feedback: (1)

Hey krproton - did you ask about doing a production run of this plane as an ARC? I heard a rumor (that I just started) that you were [sm=lol.gif][sm=wink_smile.gif]. It's OK, you can tell me. I won't tell anyone [sm=47_47.gif].