dust

i was not being cozy specific, i was being general, over all airplanes. One thing is for sure, very few speed mods live up to thier advertised increase or computed increase value. I want speed big time and I know how i will get it, turbo or supercharging and intercooling and constant speed prop - HP at altitude is my personal solution wether it is in a diesel or 360 Mike

well, I would say the proper power is 180 not 220 so the key is the right starting point, as the change from a 100hp cozy to a 200 hp cozy would be more than 10mph 260-180=80=9 mph

what i've read is that retracts add 6mph @ 200 mph over well fared fixed gear. Also the speed increase from a properly powered airplane is the square root of the hp increase so: 220-180=40=6mph retracts = 6 mph Nat put a franklin (220 hp i believe) in his cozy and i don't think he saw an increase. He did say it was smoother being a 6 Mike

We have allot of guests signed on the forum and allot of new people. I have signed on twice when there were 10 guests on at once. If you don't take the time, it may appear that there are not allot of postings and there may be info that some would like but are missing because of the default setting of days to view a thread. For example, is everyone aware that I informed the forum that you can get a 40% or so discount on epoxy, regionally. I think the settings should be defaulted to 180 days and members can change it to shorter if they like. Guests should be at the longer setting, regardless, ifin they want it shorter they can join, the fee is small. More information was requested: the default settings for the number of days a thread automatically shows up in a forum is about 30 days from the last posting to it. After that you have to change your display to show the older ones. If you go to chap specific const,chap 16 front page says one thread then go into chap 16 and it shows nothing, you must manually reset the days to "since the beginning" I think this should be the default so that guests and new members see the information automatically Mike Please VOTE

I see no problem with that, we scan ahead to see if thier are any jigs/fixtures that are going to be needed as my woodworking shop is not the plane factory. We then work on the jigs or fixtures during the week so that they will be ready when needed. For example the main spar jig was a free standing tonge and grooved ordeal that took 5 or six nights and I started it well in advance of that chapter, same with the wing holding jigs and 12 foot holding/spacing t's I just know how easy it is to STOP building and fear of a future chapter seems to be a major stopper. Mike

I'm no expert but from the one ride i had with the plans built plane, lycoming 360 75% power, cruise ias 210@6000 feet and 1100 fpm climb from 3000 to 6000, tanks almost full, front seat weight about 216+160 Mike

Going going gone Hank just stopped by and he now has every jig, fixture and templet from chap 4 to chap 20, pretty well filled up the back of his truck, I hope he uses them in good health and completes his bird. We also enjoyed his day at the labor camp, he helped us glass the last upper and lower wiglets, install antennas etc. It was great timing as the next few months will be filled with the more mundane aspects of fitting ailerons, attaching upper and lower winglets to wings, etc. etc. etc., not near as much fun as dumping on thin micro, pouring epoxy and laying up sheets of glass. enjoy Mike

reading ahead, two schools of thought, to read or not to read I am of the not to read camp, in my book, reading ahead is scarry business and can easily convince someone not to build. The doing as you read makes it so much easier, you don't have to comprehend the steps needed to install the landing gear before you build, you just have to follow the steps when you get there. We are on chap 20 and only read ahead by accident, we would then go through ritualistic brain cleansing methods to wash all knowledge of the forbidden knowledge from our spirits! Mike

"This is a memory estimate." my information was correct, that is what I remembered. But the reality of it is, the manufactures of the resin/hardener (once mixed called epoxy) is the correct place to find out the exact technicle information and procedure for curing and post curing. My post was just to educate on general epoxy qualities, not a technical disertation on post curing procedures, ifin it was I would have gone to "general canard construction" and started a "how to post cure when using mgs (msg) epoxy system" thread Mike

is 315 alot? the german engine is touting torqe, instead of hp - whenever a company does that I shy away, I want 200 hp not 140

i'm missing something here, has bad info been put on this forum? I can't remember seeing it. Has a question gone unanswered? The reality is all of the groups are in effect two edged swordes, Edge 1 you have builder support Edge 2 you need and HAVE to have it to build the plane The reality is that in building the cozy, you don't, the plans really are that good, and so is Nat's support. I have barely read the mail group in years, I support this forum for edge 1 and try to emphasize the dullness of edge 2 The final answers to the questions are usually FOLLOW THE PLANS Mike

next you will find zoche, a vapor engine on display at oshkosh for 14 years and still to be manufactured.

i forgot to add - the supply of 320's is plentiful, so they say, and they are cheaper than the 360 and the performance is very similar to the 180 hp 360, and a company out of texas now has a 360 kit, i believe certificated, that's 14000

i'm going with a new engine, hopefully the continental diesel and i expect to pay 35,000 or so, I also expect to pay 7000 for a constant speed prop. That my good sir is the upper limit in my book, now, ifin you search around over time 6 - 8 thousand for a mid time lycoming 360 is not unheard of and 700 for a new peop, so thats your lower limit Mike

Well except for john slade putting the mazda engine under coffee house, the posts there seem to be appropriate Mike

well folks it looks good for a continental diesel in 2004, no bs, 315 or so lbs, I would like it sooner but if i have to paint first then so be it, I want this engine. The cost will not be cheep, but it will be substancially below the french aerospatial

Mark, you are a very intelligent man and if you had not created the listserve mail group, you would see the answer. Pride of ownership is clouding your judgement. Thats OK by me, as you put together quite a good group, but the time for the email group is, in my opinion over. Short and sweet. The more builders there are, the better it is for all builders, suppliers stay in business and make the few parts we can't make. This forum is easier for someone to get to, it is not joined it is viewed. The forum is easier to navigate, has less clutter and the history of a thread and the entire forum is at your fingertips. Just use your professional judgement, pretend that you wanted to start your group today and you would pick this tool.

drape with black for the heat to post cure after supporting all surfaces to stop drooping/deforming

Fiberglass doesn't like uv but that is not the problem, paint solves that. Epoxy stays thermoplastic, in other words if you paint your plane black the wings will droop if left out in the sun to bake. The charts always quote that in MICHIGAN the skin temperature can go to 180 on a sunny summer day. What they don't say is that in phoenix the temp in the shade starts at that! This is a memory estimate. Room temperature curing gives stability to 160 degrees(time also plays a factor in this). Heating the plane up to 150 will then give you protection to 170, you get 20 degrees more protection than the plane is exposed to. Many many many people have built this and other planes with these materials, and none has had a white plane droop, that i know of or have heard of. Now the guy that lost the exhaust pipe and the exhaust exited from various areas around the cowl did get a droopey main spar and wings, but thats another story that i mentioned for those of you looking for reasons not to build! Current practice by many is to post cure the plane with all parts well supported, some build big ovens and some merely drape plane with black in Michigan sun.

What this post shows is very important, communication and history. Both burt and nat know what is happening with thier designs and are informed of any problems, solve them and then communicate them to everyone through a variety of means, Nats newsletter is a must. At this late date, very few problems are surfacing with the cozy, but when they do we are notified. No FAA/beech/cesna BS. Just real solutions. For example DEEP STALL. Nat learned of the problem, modified his plane, throughly tested the change, and then informed everyone. That was the biggest mod i know of, but there were others. Mike

whoever you deal with, order in advance. When we purchased the foam for our wings, we bought them out!! They only had enough foam in stock for two sets of wings! These are small suppliers in a small market, our rule is to keep 3 months supplies on hand at all times, then you rarely get bit by the out of stock bug. When you deal with the custom fab shops, hardware/landing gear struts/etc we extend that rule to 6 months. Mike

I live in michigan, we have 73 sun days a year, in the winter it is below freezing and cloudy. in the future, after we are flying, if i can install a weeping system on the leading edges and prop or a heated prop to help when accidental ice is encounterred, it will go in, end of story. I'm not counting on it being feasible, but I won't pass it up if i can put it in, ice is scarry, my buddy came back from boston and came through the clouds to land and picked up 3/4 inch in no time flat. mike BTW, I love the weather and would never dream of moving.

send nat a check and read my posts on chap 4, needed tools and space

i'm still weeping

No, he is selling COZY plans, why someone would buy them is beyond me, but he is. How you would build without full size plans is beyond me, maybe n/a means something else.