ZDZ 80 hookup
If you put the included ZDZ hardware on, you CAN'T leave the spring. so on a suggestion from Dick Hanson, I cut a thin slice of gas line making a little washer and put that under the "wheel collar thingie" before screwing it down. I am at the same point (putting a ZDZ80 on a H9 cap) and would also love to see setups. I like Roger's setup (thanks for the picture) and I used Roger's standoffs, and they worked great. I'm ready to make servo mounts...and I would like to see other pictures.... David Soniat
Posted on: 7/26/2002 12:46 PM by Author "pukinbuzzard" in the forum "3D Flying!"
http://www.rcuniverse.com/forum/fb.asp?m=207560

what receiver can I use?
Thanks for the info AMC (and all the other forums you participate in)! one further question for me..... I've currently got a 8uaps w/pcm rx. I'm planning on purchasing a 9Z in the fall. however, right now I need to buy another rx. can I buy the 9 channel pcm rx and use it with the 8uaps until I get a 9Z? I assume that last channel not having data transmitted will just be ignored? is that correct? thanks, David Soniat - tampa, Fl
Posted on: 7/25/2002 2:37 PM by Author "pukinbuzzard" in the forum "Futaba Radios Direct support forum"
http://www.rcuniverse.com/forum/fb.asp?m=189367

TOC '02/Which Days?
anyone have any idea of the daily schedule? I've read what you all posted, but nothing tells me what times during the day what happens. thanks, David
Posted on: 7/24/2002 2:11 PM by Author "pukinbuzzard" in the forum "3D Flying!"
http://www.rcuniverse.com/forum/fb.asp?m=201039

TOC '02/Which Days?
Is it know when the freestyle rounds are (morning or afternoon, etc.)? the reason is, i'll be there with my wife, and she only likes the freestyle. for every hour of freestyle i take her to, she will willingly sit through an hour of pattern....... :) David Soniat - tampa, fl
Posted on: 7/19/2002 8:46 PM by Author "pukinbuzzard" in the forum "3D Flying!"
http://www.rcuniverse.com/forum/fb.asp?m=201029

Zdz 80
you can get engine standoffs from Roger at Aerografix I believe his website is: http:\[url]www.aerografix.com[/url] I mounted a ZDZ 80 with some of his and they worked out great! David Soniat
Posted on: 7/16/2002 1:13 PM by Author "pukinbuzzard" in the forum "Gas Engines"
http://www.rcuniverse.com/forum/fb.asp?m=197593

Gas engine stand off mounts??
I just mounted a 80cc ZDZ with some of Roger's (Aerografix) stand offs....and I also agree - he does nice work! David Soniat - tampa, fl
Posted on: 7/10/2002 6:38 PM by Author "pukinbuzzard" in the forum "Giant Scale Aircraft - 3D & Aerobatic"
http://www.rcuniverse.com/forum/fb.asp?m=190021

Ultracote colors on H9 1/3 Cap
Hi all, what color is the blue used on the wings on the H9 1/3 Cap? I've got a couple minor cracks in a rib (must've been some shipping damage) & I want to cut open some on the bottom of the wing and check it out..... Thanks, David Soniat - Tampa, FL [email]dsoniat@admin.usf.edu[/email]
Posted on: 6/28/2002 12:41 PM by Author "pukinbuzzard" in the forum "ARF or RTF"
http://www.rcuniverse.com/forum/fb.asp?m=177632

Carb adjust - ZDZ 40
Kevin, sage words...... I'll do so and see if I can get it. thanks, David
Posted on: 6/11/2002 2:53 PM by Author "pukinbuzzard" in the forum "Gas Engines"
http://www.rcuniverse.com/forum/fb.asp?m=158854

Carb adjust - ZDZ 40
Hi all - I've got the ZDZ 40 in my Ohio Ultimate bipe. I've been running with a zinger 20-10 and wanted to change to the zinger PRO 20-10. now I believe it has been running a bit rich. I took the plug out the other day, and it was basically all black - no tan. (i'm using hi-test unleaded and amsoil at 40-1). i put the PRO 20-10 on and started it up. definitely got more rpms (but can't tell you how much - my tach crapped out on me). however, after i'd run it for a bit on full, if i returned it to idle quickly, it would stop. thought it was maybe too rich, so i leaned the low end. problem went away. everything seemed fine. took off and flew for a bit. about 10 min into flight I pulled the trottle back and it couged a bit and wouldn't respond. I tried giving it some throttle and it sorta chugged and then quit (I wouln't call i burbling though). anyway, I think i may have gone too lean on the low end, but probably still need to lean the high end. any thoughts? thanks, David Soniat - tampa, FL [email]dsoniat@admin.usf.edu[/email]
Posted on: 6/10/2002 2:52 PM by Author "pukinbuzzard" in the forum "Gas Engines"
http://www.rcuniverse.com/forum/fb.asp?m=158852

H9 1/3 Cap w/ZDZ 80 single
Where did you all put the CG? Exactly as per the manual? or something different one way or the other? thanks for all this good info.... David - Tampa, FL [email]dsoniat@admin.usf.edu[/email]
Posted on: 5/30/2002 12:51 PM by Author "pukinbuzzard" in the forum "ARF or RTF"
http://www.rcuniverse.com/forum/fb.asp?m=143376

H9 1/3 Cap w/ZDZ 80 single
any thoughts on balance? am I going to be tail heavy with the ZDZ engine? should I put the rudder servos mid-ships with pull pull, or at the tail as per the instructions? Thanks, David
Posted on: 5/28/2002 1:57 AM by Author "pukinbuzzard" in the forum "ARF or RTF"
http://www.rcuniverse.com/forum/fb.asp?m=143372

H9 1/3 Cap w/ZDZ 80 single
I'm really thinking hard about the above combination. I already have the engine and am just about to buy the cap. Any comments/thoughts/concerns/suggestions? (I do have a in-fuse muffler, but figure i'll have to get a pitts style to use on the cap.) David Soniat - tampa, FL [email]dsoniat@admin.usf.edu[/email]
Posted on: 5/24/2002 9:12 PM by Author "pukinbuzzard" in the forum "ARF or RTF"
http://www.rcuniverse.com/forum/fb.asp?m=143368

Update
I tried the "no heat" covering solvent. That actually seemed to do a really good job. (it's purpose after all, is to dissolve adhesive). i did a test spot and i'm letting it dry to see if any sticky residue remains.......but i can tell you that so far, it has worked better than anything else i've tried. David
Posted on: 4/26/2002 5:54 PM by Author "pukinbuzzard" in the forum "Tips & Techniques"
http://www.rcuniverse.com/forum/fb.asp?m=113007

help with goo from self-stick covering!
Ok, i've tried the goof off (which is water based). absolutely nothing! didn't remove any. i didn't try googone because it has oil in it. remember, this is on bare balsa. i don't want oils soaking into the wood. i'll try some more things and let you all know. Again, thanks for all suggestions. Just because they don't work for me in this situation, doesn't mean they don't work well in others! David
Posted on: 4/24/2002 2:18 PM by Author "pukinbuzzard" in the forum "Tips & Techniques"
http://www.rcuniverse.com/forum/fb.asp?m=113006

help with goo from self-stick covering!
I decided to recover an old trainer I have and I started pulling the covering off (it was that self-stick stuff). After several years of flying and then sitting in the hot garage, it is a gooey mess. The covering all came off, but the stickiness remains! I've tried, methanol, and acetone....neither with any succes. Any ideas what else might work (and not damage the balsa)? thanks, David Soniat
Posted on: 4/22/2002 9:19 PM by Author "pukinbuzzard" in the forum "Tips & Techniques"
http://www.rcuniverse.com/forum/fb.asp?m=113000

BME 44 quits after long dives towards the ground
just a thought..... maybe your clunk isn't heavy enough. the gas falls forward in the tank, but the clunk doesn't therefore starving the engine. David
Posted on: 4/16/2002 2:24 PM by Author "pukinbuzzard" in the forum "Gas Engines"
http://www.rcuniverse.com/forum/fb.asp?m=106882

AUTOCAD Question
CoosBayLumber - thanks for that info. that helps. I didn't make it clear though, I am saving it in .dxf from drafixs cad and trying to open that in autocad. it is the open in autocad where it asks for the shape file and then the subsequent print from autocad is where it blows up. i don't think i have any hatch patterns. it may be a fonts problem. any idea how to proceed? is there some way to pick a more "common font" which might not have the problem? or can I tell autocad somehow to substitute what it likes as a font? any help would be appreciated...... thanks, David
Posted on: 3/25/2002 3:17 PM by Author "pukinbuzzard" in the forum "Scratch Building, Aircraft Design, 3D/CAD"
http://www.rcuniverse.com/forum/fb.asp?m=84585

AUTOCAD Question
Hi, I don't use AutoCad (I use a program I was given called Drafix Cad). my program works nice enough for me. only problem is, I don't have a plotter. so when I'm ready to do nice output.....i can't do that. so I exported my drawing to .dxf format and brought it over to the architecture school on campus (I work at a university) and tried to get some help loading it in autocad and plotting it out. one kind soul tried to help, but here is what we ran into. when importing it, autocad asks us to specify a "shape" file (which he didn't have any idea about). we searched for shape files on disc (I believe they were .shx files) and picked one. that allowed us to open my drawings. However, when i tried to plot them it fails with a fatal error. Any idea what a shape file is? any idea what to do to get around this problem? thanks, David Tampa, FL.
Posted on: 3/22/2002 7:59 PM by Author "pukinbuzzard" in the forum "Scratch Building, Aircraft Design, 3D/CAD"
http://www.rcuniverse.com/forum/fb.asp?m=84582

ZDZ engines???
Hi all, i've got about 2 gallons through my ZDZ 40cc (using penzoil 2cycle engine oil). at what point should I consider switching over to synthetic? thanks, David
Posted on: 3/11/2002 4:48 PM by Author "pukinbuzzard" in the forum "Gas Engines"
http://www.rcuniverse.com/forum/fb.asp?m=64470

Fiber Optic Kill Switch For Gas Engines
I use the same switch on my ZDZ 40cc in my ultimate. has worked great! David
Posted on: 3/8/2002 4:38 PM by Author "pukinbuzzard" in the forum "Gas Engines"
http://www.rcuniverse.com/forum/fb.asp?m=72071

Cost of printing dxf
Guys, thanks for all the information/comiseration. Ed, i'd take you up on that except, this was my first try at using cad for model airplanes. my first page isn't really finished yet. in addition, i'm going to need 3 more done (it is a 33%er). I'm on a mission now to find someone i can buddy up to who has one around here (i work at Univeristy of South Florida - i ought to be able to find someone.....) I actually prefered paying for it at the blueprint shop (no schmoozing or payback) but $18 a page sounds too steep. David
Posted on: 3/7/2002 4:30 PM by Author "pukinbuzzard" in the forum "Scratch Building, Aircraft Design, 3D/CAD"
http://www.rcuniverse.com/forum/fb.asp?m=70576

Cost of printing dxf
Hi, I was working on a set of plans for a plane I'm designing/building. I'm using Drafix cad (which was given to me). I can produce a DXF output file. I drafted up a quick sheet (34"X44") of the ribs and layout of the rudder (the plan is a 33% Extra). I called one of the blueprint places to get a price on printing that one sheet - $18! that sounds a bit high. at that rate, I'm going to spend nearly as much printing the plans as buying something! any ideas? (I plan to keep looking around for a cheaper way to print it out). David
Posted on: 3/6/2002 9:27 PM by Author "pukinbuzzard" in the forum "Scratch Building, Aircraft Design, 3D/CAD"
http://www.rcuniverse.com/forum/fb.asp?m=70570

Calculating CG
Hi all, i'm finishing up building an Ohio Ultimate Bipe (63"ws). The plans show the CG to be 4 in from the leading edge of the top wing. That looks really far forward (and I can't call them since they are no longer in business). How do I calculate the CG for a bipe with positive stagger, swept wings, AND remember the center section of these wings has an un-swept portion? thanks, David Soniat
Posted on: 2/14/2002 7:53 PM by Author "pukinbuzzard" in the forum "Aerodynamics"
http://www.rcuniverse.com/forum/fb.asp?m=54452

Trailing edge dilemma
Darrinc, thanks for the reply. I only had an older demo verision of compufoil (and it didn't have the trailing edge wizard). I've now got the latest version. Haven't done it yet, but from your description, it sounds just like what the doctor ordered. RE: your question. I haven't done many foam wings, but they all seem to be heavier than built up. (i need to build 2 exactly the same and measure to confirm that). the building process is easier for me with built up. (it takes longer, though). I think I may do several wings on my next project (33% extra) and may do some built up and some foam..... thanks, DS
Posted on: 2/6/2002 6:38 PM by Author "pukinbuzzard" in the forum "Aerodynamics"
http://www.rcuniverse.com/forum/fb.asp?m=44797

Trailing edge dilemma
Here is the second one with the truncated trailing edge.....
Posted on: 1/31/2002 7:20 PM by Author "pukinbuzzard" in the forum "Aerodynamics"
http://www.rcuniverse.com/forum/fb.asp?m=44795

Trailing edge dilemma
Maybe a picture will help. these are "blow ups" of just the trailing edges of ribs. One has the taper to nothing (which as you can see makes the chord almost an inch too long. the other has the edge truncated to the thickness of the sheeting (3/32"). <OOPs, the files were too big, they were rejected. I'll try to slim them down and get them out there.> <I'm trying again>
Posted on: 1/31/2002 7:15 PM by Author "pukinbuzzard" in the forum "Aerodynamics"
http://www.rcuniverse.com/forum/fb.asp?m=44794

Trailing edge dilemma
Hi, I've been working on plans for a scratch build on a 33% Extra. I'm working on ribs and having a problem with my design. This is a built up wing, with ribs sheeted with 3/32 balsa. At the trailing edges of ailerons, elevators and rudder I plan to make the ribs taper to a fine point and the sheeting extend to that spot. when I glue the sheeting on, the edges get glued together. that makes the trailing edges 3/16 thick (which I like rather than a delicate razor edge). My problem is in lofting this. I use Drafix CAD. I can resize my airfoils, but (of course) that 3/16 trailing edge keeps resizing. I looked at the trial version of Compufoil. Everything seems to come out with a razor edge - I don't see any way to truncate it to 3/16. If I truncate it, I'm now at the wrong chord value....so I have to increase that. it all seems to be a hit or miss kind of thing. Any suggestions? thanks, David Soniat - [email]dsoniat@admin.usf.edu[/email]
Posted on: 1/31/2002 4:24 PM by Author "pukinbuzzard" in the forum "Aerodynamics"
http://www.rcuniverse.com/forum/fb.asp?m=44793

PROGRESSIVE pitch Props like 18x6-14
My experience has been less than satisfactory with dual pitch props. The greatest pitch is definitly at the tip (even though it looks the opposite). I do NOT find them to be more efficient! As a matter of fact, how could they be more efficient? only one area of the prop (at any one time) will be matching the speed of the incoming airstream correctly. I have found propellors to be most efficient when they are carfully manufactured to have an exacting shape to maintain the same pitch throughout the length of the blade. The reason mfgs make the dual pitch props is: IT IS CHEAPER! The hub can be much thinnner. David
Posted on: 1/25/2002 3:35 PM by Author "pukinbuzzard" in the forum "Gas Engines"
http://www.rcuniverse.com/forum/fb.asp?m=40002

How to cut holes in ribs?
What do you guys use to cut holes in ribs? I'm mostly talking about the holes needed for the phenolic tubes used in giant scale wings (like 1.5" diameter). They have to be accurate and neat. Also, what about holes for the servo wire tubes? In the past, i've used forstner bits with my drill press....but I've never been satisifed with the end result in balsa. it often tears out and makes a ragged hole. David Soniat
Posted on: 1/23/2002 2:30 PM by Author "pukinbuzzard" in the forum "Scratch Building, Aircraft Design, 3D/CAD"
http://www.rcuniverse.com/forum/fb.asp?m=39991

Wing Plug-ins
I'm scratch building a 100" extra right now. I'll be using a 1.5" wing tube w/phenolic sockets (which I got from Gator R/C). if you are trying the wing-tubes for the first time, you might consider the anodized ones. I personally don't like all the black that comes off on your hand (and gets smudged on the covering) when you don't have an anodized aluminum tube. For a 100" wingspan, how long a tube are you guys using? David
Posted on: 1/23/2002 2:24 PM by Author "pukinbuzzard" in the forum "Scratch Building, Aircraft Design, 3D/CAD"
http://www.rcuniverse.com/forum/fb.asp?m=24657