RE: P-6E Curtis hawk (build thread)
 

To locate the holes for the cabanes before you drill them stick straight pins where the wood blocks should be. This will help you locate then. The pt-17 instructions reccommended this. Worked well for me.

Sorry, IRONICRCAV8R Meant to respond to splais

RE: P-6E Curtis hawk (build thread)
 

I got to recheck my cabanes, may have them on backwards because my arrows are pointing backwards[:o]. %&$%%*[>:] this really is a beautiful plane.

My engine seardch continues. I have been reading and hearing so much bad stuff about the couple of small gassers I was considering I can't separate fact from fictions. No matter how hard I try I keep having to come back to glow, yuck [:'(]

RE: P-6E Curtis hawk (build thread)
 

Ironic,

Nope sorry either my stickers are wrong or you are mistaken. The manual says the short arm should go forward. The arrow stickers are on the long arm and there is no way to get the short arm forward and have those arrows point forward.


Thanks for the "pin" tip. worked great.

RE: P-6E Curtis hawk (build thread)
 

Do you even still have any glow fuel??? :D

Mike

RE: P-6E Curtis hawk (build thread)
 

Whoops I just went back and checked -- mine also point to the rear -- didn't pay too much attention to the arrows -- just went by the book and put the short leg forward. I just checked my super stearman and they do point forward -- go figure.

RE: P-6E Curtis hawk (build thread)
 

Thats OK, I got the wings all mounted now and all I have to do is figure out what engine I want to use.

Has anyone put an inverted engine in this bird with a pitts muffler? I'm now doing measurments that indicate that oil cooler extension on the cowl may interfere with a pitts muffler.

RE: P-6E Curtis hawk (build thread)
 

Splais,
That's exactly what I was wondering (inverted Pitts). I've been going back and forth between the RCV 120 and an inverted OS 120 with Pitts. I have an OS, though it's on my GeeBee, and Once I get my hands on mine (It's wrapped and I won't see it till Christmas) I'm going to trial fit the OS and see what it looks like. I was going to by the slimline inverted FS muffler, but like you I was wondering how it would fit. It also looks like a hole has to be cut to clear the valve cover on the OS 120. Right now I'm leaning towards the RCV.

Steve

RE: P-6E Curtis hawk (build thread)
 

I want to put smoke on mine. It's the prime reason I bout it. so I got to have that pitts. I looked at the RCV; but I refuse to have another engine that takes special fuel (10%) I don't use in anything else. Besides, I'm not even sure if you can put a pitts on the RCV.

The Hawk really is a beautiful plane; but that scale offset crank location does raise issues. For my use I would probably have been better off with the Super Stearman, but thats water under the bridge now. Since I already have a pitts smoke muffler for the MVVS I'm probably going to try it and just hack away what I have to hack away. You'll never see the cutouts airborne anyway.

RE: P-6E Curtis hawk (build thread)
 

If they hadn't come out with the P-6e I was gonna buy the GP Super Stearman and put the Slimline Pitts smoke muffler on it.

The P-6e is my favorite aircraft, so when they announced this thing I was all over it. I want to try and keep the lines as intact as possible, so I'll probably still aim to get the Stearman eventually. To many nice planes to choose from!

RE: P-6E Curtis hawk (build thread)
 

Just picked up my P-6E & Saito 180 from Danielle's Hobby. She's a beaut! Going with a Solo 3-Blade adjustable pitch prop on it. Anyone mounted a 180 yet. Pictures would be appreciated of a Saito 120 -180 mounted up.

Also, thinking about the Keleo Scale exhaust. Anyone have experience with keleo multi-exit exhaust on 4 stroke glow engines (Like the P-51 or P-40).

Just wonder about having enough back pressure. I guess it would be cool to have the scale exhaust built up with only limited numbers of tubes emitting exhaust.
Any thoughts on the above?
Thanks.....
Dudley

RE: P-6E Curtis hawk (build thread)
 

On a fourstroke, you do not want any back pressure.

Mike

RE: P-6E Curtis hawk (build thread)
 

Hey guys, I can do the smoke you all are wanting and I can do a pitts style exhaust for the RCV engine. I got my P-6E and I must say it is one of the better looking arf's that I have seen.
I'm keeping an eye on you guys, grin.

Kelvin

RE: P-6E Curtis hawk (build thread)
 

Kelvin -- stop watching the forum and get that exhaust done --- LOL

I have about 1 and a half hours run time on the RCV and getting ready to mount it back to the plane and hope for good weather a few ebows and extensions and I think I can get the factory muffler out the back of the cowl without cutting anything-- Now all I need is the scale exhaust ;)

Keep us updated on the progress !!!

RE: P-6E Curtis hawk (build thread)
 

I'll take one too.

RE: P-6E Curtis hawk (build thread)
 

Ironic....how's it balance with the RCV on front? I'm really leaning heavily towards the RCV, but It will be after Christmas before I decide.

RE: P-6E Curtis hawk (build thread)
 

If you have finished your Hawk, what did it end up weighing? thanks.

Mt decision, for good or bad, is made and the Roto25 is ordered. Some time after Christmas I'll have some mounting pics. The smoke system is also going in. Smoke tank going in below (above, when upright) the servo tray. smoke pump and battery going above the fuel tank in front of the smoke tank.

My Hawk is done except waiting for engine. The only thing I changed was the tailwheel (Central Hobbies), swapped out recommended 1/2" center cabane screws for 3/4", and used titanium Pro-links on the ailerons.

I'm not to keen on plastic parts you have to cut out. But the Hawk comes out looking pretty good from anythin over 5' away. I did end up using the supplied tail faring and turtledeck hump. the exhausts come out pretty nice also. I glued all the plastic parts on with RC56 canopy glue. Works really well and dries clear so you don't see any screwups from too much glue. There are a lot of nice things about this ARF and the parts kit supplied by GP is well above the quality supplied by most companies. I didn't think I was going to like that carry handle they designed in, but it works really well and is nice for working on the plane. Just turn it over and set it down.

RE: P-6E Curtis hawk (build thread)
 

Kelvin any chance of getting your custom exhaust for my YS 120?

matt

RE: P-6E Curtis hawk (build thread)
 

Ironic,

How is your RCV SP 1.20 run, I will bet it's a smoother after 1 gallon of fuel. Mine is all broke in and is turning a 16.5X12 3 blade propeller at 5400 RPM. These are so cool.

Good luck with P-6E.

RE: P-6E Curtis hawk (build thread)
 

Mine balances with no added nose weight now after moving the throttle servo to the engine box, I am using a 4 cell sub C NiMH pack above the fuel tank all the way against the firewall, along with another sub C for my remote glow attached to the rx pack. I am not sure of the AUW, but will weigh it with a fellow flyers scale when I get it to the field.


The RCV runs better everytime I run it. I still have not attached it back to the airframe yet -- still running it on the bench. I am still using the 20 X 12, but will switch to 3 blade after installing on plane. I hope that weather cooperates this weekend -- if so I will have some flight pics and video.

RE: P-6E Curtis hawk (build thread)
 

Hey Diablokid, I can do the YS 120 no problemo. Hey Spad Man who makes the three bladed prop you are using? I want one. Boy it looks like Im going to busy with these exhaust systems, who woulda thought.

Kelvin

RE: P-6E Curtis hawk (build thread)
 

There are 3 companys that I know of. I purchase mine from Desert Aircraft. It's a Bolly carbon fiber.

Bolly
Menz
Mejzlik


http://www.desertaircraft.com/index.php

RE: P-6E Curtis hawk (build thread)
 

One of these was at the field this morning. Wow did it look great! Had a G-26 (mostly in the cowl) and flew great on its maiden. For you'll getting ready to maiden, watch for nose over on takeoff. This bird's tail lifted up at about 5 Mph and she almost nosed over. Good pilot and the next takeoff was great!

You're going to have fun with this one.

RE: P-6E Curtis hawk (build thread)
 

Thanks Spad Man, Hey are you going to Puyallup this coming Febuary? I'll be there for what it's worth. Maybe see you there.

Kelvin

RE: P-6E Curtis hawk (build thread)
 

Marc,

Thanks for the report. Any chance of getting some pics with that engine installed?

Thanks,
Mike

RE: P-6E Curtis hawk (build thread)
 

Just pciked mine up at the LHS. I think I am going to try and steel wool it and shoot a flat clear to reduce the shine, but overall, it does look to be a nice model. Going for a G23 install.

RE: P-6E Curtis hawk (build thread)
 

Okay guys lets here a flight report, I have been lurking in this thread for weeks now. ;)
Later,
Brad

RE: P-6E Curtis hawk (build thread)
 

Ok - I finally bit the bullet and ordered one. I have a new YS 1.20 in the box on the shelf for the last year. I guess a Graupner 15x10 3blade will look pretty good.

RE: P-6E Curtis hawk (build thread)
 

Hasn't anyone FLOWN THE HAWK YET [>:] This thread is five pages long and no flight reports?[:o]

As I stagger along waiting for my engine to arrive here are a couple more pics of my setup. These are about my smoke setup. The Smoke Pump is in the nose above the fuel tank. That bottom tank is the smoke tank.

RE: P-6E Curtis hawk (build thread)
 

thanks for the update splais. I am considering smoke as well but am not sure whats the best way to do it with a YS 120. They make a smoke muffler for the YS line?


matt

RE: P-6E Curtis hawk (build thread)
 

matt,

A couple of companies make smoke mufflers for the YS engines. But you will nee to be careful. As big as the plane is there are few options for placing a smoke tank. What I did was the best(easiest) I could come up with. A YS engine weighs the same as an OS engine. Since this plane generally may require nose weight with a 1.20 glow engine it will be hard to get the tank weight on or forward of the CG. I think I will not have a problem because I'm putting a gas engine on her that weighs more. X That ex is for crossed fingers :)

RE: P-6E Curtis hawk (build thread)
 

Hello all,
Ive been carefully decideing what plane I wanted to buy the first of this year,and I have decided that this would be the one....
I have a few questions to ask though....
I want to maintain scale as much as possible,however Im famos for over powering my models with big ol' 4-strokes that can swing a large prop...So the question is,how bigga engine can I fit in er without cutting it all to hell?...By the way,it'll more than likely be a Saito GK,as I feel this would be the perfect compliment for the plane,since it sorta matches the color sceme anyhow...Maybe a 150,or is this a little overboard?...I would like to be able to swing the longest three blade possible so it gets the cowl clearance it should have...So another question is,whats the largest blade I can get onto a S125,or 150?...I figured Id shoot for a wide low pitch blade in hopes of getting the longest possible blades and a slower torque'yer pull like the 3-D guys shoot for...
I checked in on the SOLO variable pitch props,but I can't find where to price em,and what they'll fit,ect... I hope you guys get some pics of your hawks posted soon,I cant wait to see one with a three blade setup.... Thanks alot... Josh

RE: P-6E Curtis hawk (build thread)
 

The distance from crankshaft to ground when the plane is level with wheels on the grouind is approximately 12" with the stock wheel size.

Look at mounting pics for the OS1.20 in the manual (on line). You will have to cut some out no matter what, but the 1.20-1.80 Saito pretty much take up the same space. the plane has a scale "below center" crank location that gives about 3.5-4" of in-cowl space for an engine mounted inverted.

Until I decided I was going gas no matter what; I was going to put a YS1.40 on her. The plane is well made and probably take any 4-stroke you want.

RE: P-6E Curtis hawk (build thread)
 

Well,with some carefull thinking I figured I'll go with the Saito 150GK, it should pull her around pretty good,prolly no power house,but who needs that anyways,when you fly scale planes scale?.... So if anyone knows anything about those SOLO props,Id love to hear from ya...
I dont know prices,or what they fit.... If anyone knows if they'll fit a Saito 150 pretty well,that would be really all I need to know... Hope to see more outa this forum post...Seems to be slower than I would have thought.... Adios, Josh

RE: P-6E Curtis hawk (build thread)
 

Alright fellas,
I bought the plane last night,with a saito 150GK... Now finnaly I can get some flying shots in to you,and give a basic report of how well she flys... Just gotta give me a few days to get her in the mail,and I'll have it ready by that evening,and in the air the next day... I took me about a day's worth of time till I had the Focker DR1 finished up right,so this one should actualy go together pretty quick I hope...

Oh and one more question.... I have never ran 3-blade props before,so I was wondering if someone could give a rough guide of how I choose the right size for my Saito 150... Does it still go by say expl...If the engine called for a 16x8 prop,then would the three blade it called for be still called a 16x8x3,or is there a reduction in size in compensation for the extra blade?...Hope you understand what Im tring to say,and more later.... Josh

RE: P-6E Curtis hawk (build thread)
 

Josh,
The Saito 150 should be more than enough. I was going OS 120FS or RCV, and now have commited to the RCV 120 SP to keep from hacking up the cowl.

Yesterday I ordered two APC 15.75x13 three blade props to go with the engine, and I'm going to my LHS to get the RCV this week. I'm not sure what kind of 3-blade to use with the Saito, but I'll be that Saito has recommendations. The RCV will turn a bigger diameter because it's geared 2:1. This will be my first Non-OS engine, but I've always wanted to try the RCV.

My plane is wrapped and standing in the corner so I'll be building after Christmas. I feel like I'm behind the curve here and it's driving me nuts!

Keleo is going to make a scale exhaust for this plane and he's going to do versions for RCV and others. I plan on getting one as soon as their done.

Steve

RE: P-6E Curtis hawk (build thread)
 

The rule of thumb is- one inch smaller diameter with the same pitch for 3 blades.

RE: P-6E Curtis hawk (build thread)
 

Alright,thanks all... That should take care of the engine and the prop questions...
I just wish that I could find a prop size chart for my engine before it gets here.... I dont even know if Saito has a recomended 3-blade chart anyways,and unfortunatly www.saitoengines.com is just a directory to the distributor,"horizon hobby" for some reason:eek: and it only says my engine calls for a 16x8 to a 18x6 two blade prop....
I found on my old saito 82,that it needed the largest prop recomendation or one size larger to make full use of its torque on my GP Fokker DR1... Must be the sea level Im at or something....
I live right at 1,350' SL... Im not sure if thats what makes the difference here in the Shenandoah Valley on what not... So anyhow,I bought a Master Airscrew "Classic series" 18x6 to test the first flights with...Later on I plan to buy a SOLO 3 blade hub... I hope to get the black composite blades they just released... Should look awesome with some"Hamilton" stickers on the blades...
To top it all off,Im hopeing "keleocast" has that custom exhaust ready soon,cause if he makes one that'll fit a Saito 150,one of his pipes already has my name on it.... Now,only if Fema made an in-cowl starter to fit the Saito 150... Haha,getting a little carried away now,and a little nose heavy to!!!..I'll just be all smiles once this thing is in the air... Im just excited,as my wife is the one who bought me this plane and engine,so I actually have some extra dough to blow on accesorys for once... I guess I owe her some major browny points huh?!!! And amazingly she let me have it before Christmas so I could post on it in here!!!
Anyhow I plan on posting pics when I fly it,but Im concidering posting videos aswell,but havent ever done this... I understand how to get a video on the pc,but I dont know where to post it... Is there any free video links that any of you guys know about,that I can post em to? It would be awesome to be able to give you fellas a video post URL,and then it would eliminate the "how does it fly?" question in this post once and for all...
Maiden flights can be a little hair raising some times,and prolly worse under the video lens,but if it flys as beutifully and easy as my Fokker did,Im not fretting her much at all really... Great Planes undeniably has made some of the most fun and best flying planes Ive ever owned...
Their ARF's have come a long way,and seem to only be getting better...Hope they keep it up!

PS. Does this bird come with any guage stickers?...If it doesnt I plan to buy a sheet for the heck of it... I know it doesnt have a full cockpit,but it makes em look better never the less...

RE: P-6E Curtis hawk (build thread)
 

You can post your video here.

http://www.putfile.com/

RE: P-6E Curtis hawk (build thread)
 

What do you guys think about Perry Pumps??? I like the idea of being able to regulate my fuel better,seeing how its gonna be an inverted engine setup...
Im trying to decide which to buy though... Theres the "P-30 Regulating pump",and the 4-Stroke specific "P-20" that operates off of vibration... Sounds like a simple choice I thought....Wrong! Acording to some people,Im being told that they like their P-30 regulating pumps even on their 4 strokes,and then theres others saying that I should buy the P-20 as its intended for 4-strokes... What do you guys think? Which one do you think is better,and why???
Im confused to the point to where Im just gonna let it ride for a while till I can get enough reasons to go one way or the other... Josh

RE: P-6E Curtis hawk (build thread)
 

I personally prefer the Iron Bay regulator over the Perry regulator's. Best on the market IMHO !

http://www.ironbaymodelcompany.com/W...or%20Main.html