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  1. wypaul

    I believe that all of the tanks that were supplied by Avid were polyester resin. I know the ones supplied with my MK IV are PE  That said you can use polyester vinylester or Epoxy to wrap the tank, with polyester being the cheapest.  The issue is that polyester will not bond well to Epoxy but Epoxy does bond to polyester just fine.  The tanks were coated with mold release so they will need to be cleaned and sanded no matter which resin you use.  I think that is covered in the build manual.

  2. little rocket

    If you are wanting to clean the carbon and junk out of the engine,you can put MM in your cylinders overnight .I had 2 cylinder in my lycoming that had low compression , On compression check I could hear the air coming out the exhaust on one cylinder and the intake on the other low one. I had read that you could put a spoon full in the spark plug hole and pull the prop threw by hand a bunch of times to get it moving threw the engine and leave it overnight .So I did that ,next day pulled it threw by hand some more then put the plugs back in and started it and let it run up to operating temp.Checked the compressions on the 2 low cylinders and both had come up by 10 pounds but were still a little lower then the 2 good ones .So I repeated the process and next time the 2 low cylinders were up around the same as the rest.After that I added 2 ounces per 5 gallons when ever I went flying.Marvel Mystery oil made me a believer.

    2 people like this
  3. Yamma-Fox

    It has an oil cooler integrated on the engine, and also a big external tank (dry sump system).

     I plan to mount the oil tank up front by the cowl Inlet holes so that it gets extra air flow. I have not yet heard of anyone who has had issues with high oil temp.

  4. Shipl14

    I'm getting ready to wrap the tanks with fiberglass. The new tanks came with my kit and I don't have any info on what they're made of. Just trying to decide what kind of resin to order. 

  5. Chris Bolkan

    i would be cautious considering an Avid that had spent a bunch of time on floats. When a friend was buying an Avid from Steve Winder when he was running Avid in its last days, they were rebuilding an Avid that had spent a bunch of time on floats. There was fairly extensive fuselage rust that they were in the process or repairing. Not just surface rust either. there was a lot of welding going on.

    Not saying the one you are considering might not be a great deal,  just be aware before you take the plunge. You would't want to end up with a bigger project than you are looking for.

  6. Chris Bolkan

    It is my understanding that vinyl ester resin is much more ethanol resistant than polyester resin. I believe the epoxy resins offer the greatest ethanol resistance, and that makes sense to me because I found both structural and phenonovalac epoxies to be virtually immune to ethanol.

  7. Shipl14

    i saw a discussion here awhile ago about the ethanol resistant tanks. Can't find it now. Talked about which resins are compatible and which aren't. 

  8. 1avidflyer

    I built the ones in the picture myself.   I have built some others for people but it's not something you couldn't do yourself.  I'm pretty busy with my own projects as it is, so it's not like I'm looking for work.  :) I would say, find out what your have, and what you really need, and then go from there.  None of it is rocket science.  It can be done....  JImChuk

    1 person likes this
  9. TonyR

    Thanks both of you.  Now I need to do my homework and crunch some numbers.   Can those tail ribs still be bought or is it something that is home built. The current owner suggested that tail ribs could likely be fabricated.  

  10. 1avidflyer

    All Avids have the spars on 27" on center front to back, (Kitfoxes do as well) so in a way, all wings would fit more or less.  There are speed wings (shorter and flat bottom) STOL wings, longer, under cambered bottom and with thinner walled spars and ribs on 18" centers, and heavy hauler wings, longer with under cambered bottoms with thicker walled spars and ribs on 12" centers.  If your rib tails are in bad shape, those can be replaced.  It would require recovering the wings of course.  Here are pictures of  partial ribs that would be attached to the back of the spar to replace the rotted out rib that is there.   JImChukPhoto06511.thumb.jpg.86f838c77f774253d00

    1 person likes this
  11. TonyR

    Hi. I am looking into an older model avid flyer. I presently don't know the model number.   I know it has a 582 grey head.  It was on floats a number of years.  The wing has the all in one wood rib that droops down as the aileron mount.  The issue is the exposed wood on the trailing edge of wing ribs is weathered and potentially needs new ribs or trailing edges.   Lets say if this avid flyer is an older model could newer wings be installed or is very model specific? I realize of course that some mods may be required.   Thanks in advance.  I guess I better find out what model the avid flyer is.   

  12. Yamma-Fox

    This sounds way cool!

    But, with about 5k hrs in turboprop time, I wonder about a couple things.

    Yeah there's the GPH downside, but at least in MN you could get "non road tax" diesel for $2.29 a gall (when non-ethanol gas is like $3.80)

    But also don't forget the spool up problem, especially on a geared or direct drive turboprop.  Planes with those motors generally require a very high drag setup and stabilized power during approach to force spool up and reasonable power response.

    It'll be interesting to see how that issue is addressed.

  13. dholly


    WASHINGTON — The Supreme Court says states can force online shoppers to pay sales tax.

    The 5-4 ruling Thursday is a win for states, who said they were losing out on billions of dollars annually under two decades-old Supreme Court decisions that impacted online sales tax collection.

    The high court ruled Thursday to overturn those decisions. They had resulted in some companies not collecting sales tax on every online purchase. The cases the court overturned said that if a business was shipping a product to a state where it didn’t have a physical presence such as a warehouse or office, the business didn’t have to collect the state’s sales tax. Customers were generally supposed to pay the tax to the state themselves if they don’t get charged it, but the vast majority didn’t.

    Justice Anthony Kennedy wrote that the previous decisions were flawed.

    “Each year the physical presence rule becomes further removed from economic reality and results in significant revenue losses to the States. These critiques underscore that the physical presence rule, both as first formulated and as applied today, is an incorrect interpretation of the Commerce Clause,” he wrote.

    In addition to being a win for states, the ruling is also a win for large retailers, who argued the physical presence rule was unfair. Retailers including Apple, Macy’s, Target and Walmart, which have brick-and-mortar stores nationwide, generally collect sales tax from their customers who buy online. That’s because they typically have a physical store in whatever state the purchase is being shipped to., with its network of warehouses, also collects sales tax in every state that charges it, though third party sellers who use the site to sell goods don’t have to.

    But sellers that only have a physical presence in a single state or a few states could avoid charging customers sales tax when they’re shipping to addresses outside those states. Online sellers that don’t charge sales tax on goods shipped to every state range from jewelry website Blue Nile to pet products site to clothing retailer L.L. Bean. Sellers who use eBay and Etsy, which provide platforms for smaller sellers, also aren’t required to collect sales tax nationwide.

    The case the court ruled in has to do with a law passed by South Dakota in 2016. South Dakota’s governor has said his state loses out on an estimated $50 million a year in sales tax that doesn’t get collected by out-of-state sellers. Lawmakers in the state, which has no income tax, passed a law designed to directly challenge the Supreme Court’s 1992 decision. The law required out-of-state sellers who do more than $100,000 of business in the state or more than 200 transactions annually with state residents to collect sales tax and turn it over to the state.

    South Dakota wanted out-of-state retailers to begin collecting the tax and sued several of them:, electronics retailer Newegg and home goods company Wayfair. The state conceded in court, however, that it could only win by persuading the Supreme Court to do away with its physical presence rule.

    The Trump administration had urged the justices to side with South Dakota.

    The case is South Dakota v. Wayfair, 17-494.


    Follow Jessica Gresko on Twitter at

    Copyright 2018 The Associated Press. All rights reserved. This material may not be published, broadcast, rewritten or redistributed.

  14. 1avidflyer

    Hi all,  I'm in need of an IVO prop hub, the type with the screw adjuster.  Actually what I really need is the 5/8" X 4" disc that goes up against the prop shaft.  Anybody got anything like that sitting on the bench collecting dust?  Send me a PM, or give a call.  218-two five four-24 zero four.  Thanks,  JImChuk