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avweb.com
I just noticed that this article is written by @PaulMillner and I did not notice anything that hasn't been discussed here (PoA) already.
And here we go again
We'll now have people posting lead in Avgas is no big deal. While true, it just doesn't matter, that train has left the station.
Next will be the source TEL from China. Again while some companies in China claim to make TEL, it's extremely unlikely any of the oil majors will source it. Easier to just abandon the piston market.
Lastly, will be the G100UL melts paint crowd. While it seems to have issues and George Braly isn't the best PR guy, it does work from an octane/detonation perspective. The two other alternatives seem likely to require timing changes in higher compression engines to work.
I wish Braly/GAMI would do something besides blaming the owners poor maintenance on the issues they seem to be having and address them head on. Also need to get the UL fuels available more broadly. There's a million gallons in a tank doing nothing, I'd try it if I could get it.
youtube.com
And I thinkthat's ^^^^ what will end up happening at the end of this multi-decade teeth gnashing. The revenue folk will recapitalize to turbine instantly and pass down the capital cost to the consumer, as they already knew what the inflection number was all along. The recreational folk who can't downshift to 94UL without power loss are not the plurality of that space, and as such will have to learn to enjoy their downrated paperweights.
Problem is 94ul (which has caused valve recession that swift blamed due to operating at peak per Lycoming) is going to be phased out for 100r which will require timing changes on the high performance engines. But it will have an additive to help prevent valve recession. Reading between the lines it sounds like swift knows there's an issue with ul94 causing valve recession and are trying to sweep that under the rug while also introducing 100r.
Workin on it.
I have. Have you been through the FAA supervised testing G100UL has gone through?I’d hold off on trying G100UL. Have you watched any of these independent tests?
Paint and Materials Effects Testing 100LL vs Unleaded fuels (G100UL, etc)
Videos showing testing of 100LL vs G100UL and unleaded fuels including Swift’s 100R. Also covers affected aircraft with G100UL since RHV, WVI and other airpo...
You are assuming that Braly is wrong and that G100UL is really eating up gaskets and O-rings and bladders that were in good shape prior to using his fuel.And here we go again
I wish Braly/GAMI would do something besides blaming the owners poor maintenance on the issues they seem to be having and address them head on.
You've landed on the most significant factor that no one else seems to talk about: George. His vigilance over his IP is reminiscent of the Wright Brothers, and is likely to end in a similar way. If he'd been more open to working with Big Oil a decade ago, this whole thing would be behind us. As for the paint and seals, it may be true that all of the affected airplanes had old paint and seals before they started G100UL, but they weren't leaking. George needs to acknowledge that with something like, "it would be a good idea to get a bunch of fuel system maintenance done before switching but, in contrast to retarded timing, you'll still make 100% power." Instead, he's defensive, which makes one wonder what else we don't know.
My biggest concern about GAMI isn’t paint or gaskets. It’s insurance companies. Until your carrier says it’s fine to use an alternative fuel, you’re running at risk of not being covered in case of an incident.
The bolded and italicized comment may need a bit of review. It is my understanding that many, if not most of them did indeed show evidence of leaking prior to using G100UL.
I think the firmness on Innospec's part is bit more definitive than we've seen in the past. It's a tiny part of their business, run on an old and tired asset that they have been reserving for the cost of shutting it down.
??? I've seen plenty of folks remark on George's combative style, and how it likely serves him more ill than good. Maybe that's not remarked on so much in formal publications out of professional courtesy or whatever, but if you read pilot forums like this one, it's mentioned pretty often.
A couple of years ago I wrote a version of Red Barchetta substituting a Yellow Cub for the car. It was pretty corny, but damnit I didn't want it to come true!
It kind of reminded me of when I bought my Fly Baby in 1996. I immediately started running it on car gas (~25 hours total time on engine). First annual, I had a valve leakage.
I have a Grumman Tiger with no evidence of leaking and new paint. I am not willing to be a Guinea pig for testing G100UL. GAMI needs to have an independent testing lab do the proper material compatibility testing and prove to us that their fuel does not damage. Perhaps the various owner groups can contract for the testing for their owners.
There's a lot of controversy about whether lead acts as a cushion to prevent valve rescission or if the octane it provides prevents detonation that causes micro welds between the valve and the seats which get torn when the valve moves, causing erosion. I tend to believe the latter.
I swung to this point of view after the 421’s insurance settlement for 600K was made public and specifically names gamifuel as the cause of loss.
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