BH Model Pitts Special

[Doozer]

Mar 2, 2012 22:36:30 GMT -6 Doozer said:

I've also got way too much aileron in my right roll. Recommended is 15mm and I'm at 25mm on all four servos when I push the stick right. I've got 10mm on all four when I push the stick Left. Doesnt' seem to matter where I put the servo horn or how I adjust the linkage. I think it's something with the Matchbox so... I'm going to try and find a set up video for the matchbox. Or... i could be completely wrong and missing something extremely obvious, which I hope someone will help me out.

Thanks to the internet, once again, I got this sorted out. It seems my radio automatically gives me flaps, even when choosing "Normal" as my wing style. I had to go into "Flap Sys" of my X9303 and dial all values to zero that weren't already at zero. In this case, "Up" and "Down" were set to 100 and everything else was zero. You have to make sure all values are zero in all three flight modes. (N, ST1, ST2)

Once I did that, I had to re-ninety my servo horns, because I now had a lot of differential. Once I did that I was then able to adjust my end points to get 15mm up and down. A little more fuel through the engine and I'll be ready to fly

Also, I've learned to keep my foam wheels from sitting too long while holding a load. They will develop a flat spot if the sit too long in the same spot. I had the plane wheels up while working on the servos and all my kids and my father came up and said, "Hey, you know you've got a flat spot on your wheels?" It wouldn't have been so bad if they all did it at once, but they strolled by, one by one, and pointed that out. I told my dad it was for better traction. He said "oh" and walked away.

[19000rpm]

Good to hear you have the servo situation in hand. Not knowing your radio I couldn't advise.

Good point on your wheels. I've got a couple like that and if they have retracts I store and transport them retracted. A fixed gear; I use a stand like the foam Robart. The good news is that the flat spots come out, so you won't having the boys dissing you anymore for that. Good answer for your dad. I doubt he bought it though.

[Doozer]

lol, he just turned 80 so... I think you're right.

I'm looking for a piece of silicon tubing with an ID of 5/8" or 70mm. I need the high temp stuff. Once I put the cowl on I'm going to need to deflect the exhaust outside the cowl. The current piece of tubing I have wont work. I've gone online but can't find anyone who will just sell me a foot. Any ideas?

[Doozer]

I revised the price break down in the first post to match exactly what I've got in the plane.

[Doozer]

added Matchbox instructions to the wing section in the second post.

[19000rpm]

Mar 5, 2012 7:24:17 GMT -6 Doozer said:

lol, he just turned 80 so... I think you're right.

I'm looking for a piece of silicon tubing with an ID of 5/8" or 70mm. I need the high temp stuff. Once I put the cowl on I'm going to need to deflect the exhaust outside the cowl. The current piece of tubing I have wont work. I've gone online but
can't find anyone who will just sell me a foot. Any ideas?

I wish i did, but I don't. Maybe kent will when he shows up.

[Doozer]

I just realized I put 70mm.... I meant 19mm. I don't know why I typed 70mm.

[Doozer]

All sorts of High Temp silcon tubing and you can buy by the foot, aaannndd in different colors found here:

www.mcmaster.com/#standard-plastic-and-rubber-tubing/=gj9lpt

On the left column you'll see a "Material" menu, select "Rubber" that will take you to the page where you can find High Temp Silicone

[19000rpm]

19mm. OK. Makes more sense. 70mm would be large enough for a 350CI engine.

Looks like a good site for tubing. I've been thinking of making a bungee launcher for some of my jets using silcone tubing.

[Doozer]

They sell loads of stuff. A lot of stuff we use in the hobby, and it's high quality stuff. I ordered yesterday and they shipped it yesterday. There prices aren't really a deal, but if you local hardware stores don't carry a product (silicone tubing) I bet they do. They even have a flat bed Tricycle. It's $1250 bucks, but I was thinking I could strap my plane to it and ride to the field (it's only a mile away). Save myself a few hours every time I want to fly.
www.mcmaster.com/#cycles/=gjmiix

Anyway, I took forever writing this post because I kept going back and forth looking at stuff.

[19000rpm]

That Tricycle would be neat,

[akent]

A flat bed tricycle!
What will they think of next!!

Hey, you could strap your planes to the flat bed with the control surfaces deflected up. Then you would be a little lighter as you go down the road!
And, you could fire up the motors and let them help!
Heehee!
Kent

[Doozer]

Changes incoming!

I added a fuel dot and vent dot. I had always planned on some sort of fueling system I was just undecided. I went with the Hangar Nine HAN116 Fuel Filler and Overflow Fitting. It was $7 at my LHS. I could have gone with a couple of more expensive metal versions but I figured I'd give the cheap version a try first. If it doesn't work out I've only wasted $7.

Also, I've always thought the stock tail wheel was small and not to scale. When I compared to my Stinson, or my GeeBee it looked small. So I picked up a Dubro 1/4 scale tail wheel, and sure enough, that looks a lot better. I've taxied it in the circle at the end of the street (cul de sac) and it seems to have taken some of the right drift out (yep... right drift). Maybe it's my imagination, but well see soon enough.

I plan to change the throttle servo... again. I'm building a box for it from tounge depressors and popsicle sticks to act as a sheild. The box will provide insulation from noise and heat. Then I'm going to bolt the servo in from inside the firewall. This will take a lot of the angle out of the servo control rod. The servo screams a little when I add throttle, and I'm thinking it's because of the angle.

I haven't really made up my mind yet, but I think I'm going to go ahead and add a choke servo and tie it to the gear channel. I like the mechanical pull rod I had planned, but I'm not sure how it's going to look or react to the wind. This means figuring out a place to put it, and then working around the gas tank. If it becomes to difficult I'll probably not mess with and go with the mechanical idea.

I'll take some pics when I'm finished with everything.

[Doozer]

Found a great operating manual for the DLE 30.

images.rcuniverse.com/forum/upfiles/466026/Tr50265.pdf

I probably would have started with lawnboy ashless for break in had I read this first. But I am definitely decreasing the amount of oil I'm using. 25 to one seems to be a little much (oily). I'm getting a lot of soot at this ratio.

[Doozer]

I just dodged a huge bullet. I feel embarrassed, but I'll share in hopes that others learn from my stupidity.

As I've posted above, I've been getting a lot of soot and unused fuel from my exhaust. I've been using a 25:1 ratio just like I did with my Helibug. As a matter of fact I've been using the same can. After reading the unofficial "operator manual" for the DLE 30, I decided that it would probably be a good idea to back off to 32:1 (4oz per gallon) during break-in. After break-in (5 gallons of fuel through) I'm going to drop it to 40:1 (3oz per gallon). Really, I arrived at this decision not just based on the soot, but after inspecting two plugs and eyeballing the piston crown.

So I stop off at Wal-Mart on my way home from work to pick up some Coleman and a new "Plank" gas can. While I'm there I see this nifty looking syringe with the oil ratios on the side and I buy it. So, like a kid, I get home, don't even go inside, and head straight for the quart of Royal Purple. I pour out some oil into a cup, then suck it up into the syringe until I reach the 32:1 ratio line. I pour the gallon of Coleman into the new can then squirt the contents of the syringe into the can as well. I mix it up and seal it up, and then go inside to eat.

I come back outside with the Pitts to fuel it. My dad's with me and I stop to show him the cool new syringe I bought. It was then I noticed that the 32:1 ratio is for a quart of gas.... not a gallon. Then my mind starts racing. I remember the cup I used was a 2 oz dixie cup and I didn't fill it all the way up. The looking at the syringe I find the ounce markers and see that the syringe can only hold up to two ounces. It's then I realize I only put a little more than an ounce of oil into the gallon of Coleman. If I didn't have my dad with me... I could have done some serious damage.

I wasn't paying attention, and it could have been costly. Another lesson learned, luckily it only cost me $9 and some royal purple. I dumped the old fuel into another jug and I'll use it in yard equipment. I thought it best to just start new, and I now have four ounces of oil in the can.