![]() |
If this is your first visit, be sure to check out the FAQ by clicking the link above. You may have to register before you can post: click the register link above to proceed. To start viewing messages, select the forum that you want to visit from the selection below. |
|
|
Thread Tools | Display Modes |
#21
|
|||
|
|||
![]()
On Mon, 05 Jul 2004 14:22:33 -0500, Barnyard BOb -
wrote: On Mon, 05 Jul 2004 19:07:56 GMT, "Bruce A. Frank" wrote: There is a good article in the latest issue of "Kitplanes" ("Certified vs. Homebuilt") about the Chevy conversion package. ++++++++++++++++++++++++++++++++++++++++++ When it comes to "Kitplanes"..... check out their past coverage of the Mini-500 helicopter. It could not have published better press. It the nature of these kinds of magazines for Wannabies to pump up and inflate whatever comes along or be silent. It's how they make their living. They are not "Consumers Reports" - where there is no advertising. Barnyard BOb - Caveat Emptor That's right. Ken Armstrong touted the Mini-500 in an issue that hit the stands the month they went out of business. That Mini-500 was a ball of worms but the Kitplanes article didn't point a bit of it out in their last article on it. The only way to really figure out what the hell is going on is to look at the history of whatever it is you are concerned about. Don't rely on Kitplanes or Custom Planes, or Sport Planes. They are in business to make a profit and sell advertisement. What you do it get a list of builders who are flying whatever it is you are interested in building. Call every single one on that list and see how long they have been flying, how hard it was to build, how hard it is to maintain, what idiosyncracies it may have as far as the fuel it uses, or oil or other things. Tell the builder your level of experience both as a pilot and a builder and ask them what they think your problems might be. I've said this before and I'll say it again, I'm no kissin' cousin of Jess's either. He and I have gone around and around about many things. I have no secret allegiance to him or anyone else at the OMABP either. In fact I have nothing to do with them mostly. I don't endorse it and I don't NOT endorse it. I'm neutral. But, at the time I was involved, I had many unanswered questions so I got out of the project. I thought the risk for my level of knowledge and the number of unproven parts in that thing just proved too much risk for me to continue being the test pilot on that project, especially since I was doing it for FREE to boot. Over the years, many of my concerns have been proven wrong. The PSRU has proven to be a damn good unit. It's in many airplanes, it's flown thousands of hours in them and to my knowledge there's never been a failure. Also, many of my original concerns are now moot because they did continue to modify that package over the years and address a great number of the very things I was uncertain about. So, my advice to any of you who might like to go this way is to just get on the phone or the Internet and contact those who have done it and see how satisfied, or unsatisfied they are. Don't depend upon some goofy magazine article. All these magazine articles are is a tiny little snapshot of the whole. I'm sure that Jess, Tom and I could write up 1000 pages on the things that have happened and have been modified on that package over the years. That's way too much for a magazine to publish, and it doesn't tell you what you want to know anyway. What you want to know is, "Is it going to kill me?" When I was a kid just learning to fly back in the early 1960's I used to wonder if a wing might fall off. I asked my flight instructers and some builders questions like that. What they told me is that I have to believe in HISTORY. If there is no history of this Aeronica Champ's wing falling off, then chances are the one you are flying won't fall off. Same thing with these auto engine conversions. At this point in the game there is a lot of data on the Fords and the Chevy's. The history looks good to me. I'd have to sort of go along with the autoconversion freaks and say that they did it. I agree with Juaquin (Whaa-keen) in his Kitplanes article although he didn't present all the data. Bill Harold, Tom and Jess pretty much did what they set out to do and that was to use a Chevy engine in place of a Lycosaur to make that little airplane perform as well without the expensive certified engine. Not only have they done it, but many others to whom Jess has sold that package to over the years have done it too. So, you have a big data base to look at now in order for you to make your mind up. BWB |
#22
|
|||
|
|||
![]()
On Mon, 05 Jul 2004 19:14:21 -0400, Matt Whiting
wrote: Barnyard BOb - wrote: On Mon, 05 Jul 2004 12:52:12 -0400, Matt Whiting wrote: The engine has never left me stranded so I think I'd be OK flying behind one. Matt ++++++++++++++++++++++++++++++++++++++ THINK you'd be OK????? Think, as in I'd want to do a little more research on the reliability of the Chevy V-6 as set up for flight by Belted Air Power. Initial results look promising, but I like a little more than what I've seen so far. However, my personal experience with the 4.3 is pretty good. It's only significant failure still left it operational, albeit down probably 40 HP. Had this same thing happened in an airplane, the plane would have still flown to a nearby airport. Lordy, lordy, lordy. Never a shortage of nominees for a Darwin Award. Wannabies, the clueless... and worse, abound. Is BWB correct or what? You old-timers get pretty cranky when your Depends need changing. Matt As I said above. Call Jess, come to Vegas and fly it. Get a list of all the people who are flying them and do some research. Figure out what their problems are. BWB |
#23
|
|||
|
|||
![]()
On Mon, 5 Jul 2004 09:39:55 -0700, "C J Campbell"
wrote: "ChuckSlusarczyk" wrote in message I guess this goes to show that when it comes to memories we're all human and the net is not :-) BWB is human?!? Does this mean that I have to disband the church that I founded or do I merely have to now give BWB half the collection take? You guys can't read. I asked that idiot to point out where I'd made the statement that the PSRU's failed. Since they never have, I never made the statement. My concerns were over bearings in the PSRU, but my concerns were invalid. The bearings are fine. Corky proved nothing. BWB |
#24
|
|||
|
|||
![]() |
#25
|
|||
|
|||
![]()
Badwater Bill wrote:
And, guess what, Corkman, the PSRU never did fail. Neither did any of the other things I was worried about. In fact the old men kept on making modifications and changes and a lot of the stuff that was on my list at that time was incorporated into that airplane. And...just because I was worried about many things I didn't understand as a pilot at that time, doesn't mean that I was right in being so. It never failed that I know about. In fact the PSRU turned out to be just about the most bullet proof part of the thing. There were much bigger issues like burning 100 octane fuel that caused more problems than the damn PSRU ever caused. I'm not an engine guru, so what is the issue with 100LL fuel? My recollection when the auto industry converted from leaded fuel to unleaded, that it was the lack of lead that caused burned valves and required different valves and valve seats. I do understand that higher octane means a slower flame front. My guess is that the higher octane in 100LL is keeping the combustion event ongoing long enough that the exhaust valve opens while the fire is still pretty hot. Is this what causes the valve problems? It can't be lack of lead as 100LL still has lots, even with the "low lead" description. Matt |
#26
|
|||
|
|||
![]()
Badwater Bill wrote:
I may take that thing to Arlington on Wednesday. If you are around, you might see us there. BWB I'm on the east coast so I likely won't run across you any time soon and my RV project will almost certainly be a retirement project with three kids to put through college and the first just two years from starting. Hopefully, but then the auto powered RVs will be very well established and the only question left will be Subaru or Chevy. :-) Matt |
#27
|
|||
|
|||
![]()
Badwater Bill wrote:
On Mon, 05 Jul 2004 19:14:21 -0400, Matt Whiting wrote: Barnyard BOb - wrote: On Mon, 05 Jul 2004 12:52:12 -0400, Matt Whiting wrote: The engine has never left me stranded so I think I'd be OK flying behind one. Matt ++++++++++++++++++++++++++++++++++++++ THINK you'd be OK????? Think, as in I'd want to do a little more research on the reliability of the Chevy V-6 as set up for flight by Belted Air Power. Initial results look promising, but I like a little more than what I've seen so far. However, my personal experience with the 4.3 is pretty good. It's only significant failure still left it operational, albeit down probably 40 HP. Had this same thing happened in an airplane, the plane would have still flown to a nearby airport. Lordy, lordy, lordy. Never a shortage of nominees for a Darwin Award. Wannabies, the clueless... and worse, abound. Is BWB correct or what? You old-timers get pretty cranky when your Depends need changing. Matt As I said above. Call Jess, come to Vegas and fly it. Get a list of all the people who are flying them and do some research. Figure out what their problems are. BWB That is exactly what I will do when I get ready to build. Matt |
#28
|
|||
|
|||
![]()
On Mon, 05 Jul 2004 21:19:43 -0400, Matt Whiting
wrote: Badwater Bill wrote: I may take that thing to Arlington on Wednesday. If you are around, you might see us there. BWB I'm on the east coast so I likely won't run across you any time soon and my RV project will almost certainly be a retirement project with three kids to put through college and the first just two years from starting. Hopefully, but then the auto powered RVs will be very well established and the only question left will be Subaru or Chevy. :-) Matt To tell you all the truth, in 1997 I didn't believe these guys would be able to pull it off (but I didn't know anything about it either and was there to learn). I flew the thing as a test pilot because I like flying strange and different stuff. I did get concerned about all the topics that Corkscrew posted in a rehash of my post when I quit the project. But, over the years, they did fix a lot of stuff and I was proven wrong. The thing does work and it seems to work well. I just got off the phone with Tom Jones 10 minutes ago and they read some of the stuff I just posted this evening. Tom told me that Jess has bent over backward to replace things that may have not even been defective when he thought he might have had a problem. All of the PSRU is all computer cut and/or machined with lasers etc. Jess found that some gear that was out of spec a few years ago and went nuts about it. It turned out that all of the ones he'd sent out were out of this country too. He paid for their returns from all over the world only to find that he really didn't have a problem. But, he replaced them all anyway with gears that were within spec. And, the gear manufacturer who screwed him up didn't pay a nickel of it. He's been very safety conscious about that product and that's my primary concern about any of these homebuilder manufacturers. The belts were a different issue. I actually failed one on the ground once, when I was doing some really radical tests on it. The whole team went ballistic about it and looked into that whole series of belts. It was in 1997 I think. Jess doesn't even use that same type of belt anymore but he did find that there was a defective batch. He replaced everyone of them in the field at his expense although there was never a failure. Tom just told me that to our knowledge, there has NEVER been any failure of the PSRU that Belted Air Power builds and sells. NEVER. That's why it ****es me off to see some **** head like Corky Scott tell you people that I posted there were PSRU failures. That's not just bull **** and a bold face lie, it's libel. I think he's got his head up his ass as usual. Just another sideliner with his head up his ass making big claims about things he knows nothing about. BWB |
#29
|
|||
|
|||
![]()
PSRU ever caused.
I'm not an engine guru, so what is the issue with 100LL fuel? My recollection when the auto industry converted from leaded fuel to unleaded, that it was the lack of lead that caused burned valves and required different valves and valve seats. I do understand that higher octane means a slower flame front. My guess is that the higher octane in 100LL is keeping the combustion event ongoing long enough that the exhaust valve opens while the fire is still pretty hot. Is this what causes the valve problems? It can't be lack of lead as 100LL still has lots, even with the "low lead" description. Matt You are dead on Matt. They Old Men were worried because the fuel burns slower and burning fuel goes out of the exhaust valve. They were worried that the valve would burn, so they did some things so that wouldn't happen. It's in Jack's article in Kitplanes this month (look on page 46). I'm not an engine mechanic but what that article says is because of this worry. They made sure they used a cam with a different profile because GM provides that engine with six possibilities. You just don't know what you are going to get. They used hardened seats and stainless steel valves with chrome plated stems, plus hard tips with bronze guides so nothing would stick and freeze up on them using the 100 LL. Tom thinks that was all an over kill but I have no idea. So, you'll just have to make your own conclusions. BWB |
#30
|
|||
|
|||
![]() I'm not an engine guru, so what is the issue with 100LL fuel? They used hardened seats and stainless steel valves with chrome plated stems, plus hard tips with bronze guides so nothing would stick and freeze up on them using the 100 LL. Tom thinks that was all an over kill but I have no idea. So, you'll just have to make your own conclusions. The other issue is that in conversions that use oxygen sensors, they wipe out the sensor, in a fairly short period of time. -- Jim in NC --- Outgoing mail is certified Virus Free. Checked by AVG anti-virus system (http://www.grisoft.com). Version: 6.0.714 / Virus Database: 470 - Release Date: 7/2/2004 |
Thread Tools | |
Display Modes | |
|
|