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  1. A

    Do you have a sawmill?

    I have a sawmill... well actually two sawmills. One is a Logosol F2+. It uses a chainsaw for the cutting. A bandsaw mill has less waste and cuts faster, but the Logosol was a nice way to get started with a portable sawmill. I also have an Alaskan-type sawmill, which also uses a chainsaw...
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    epoxy weakens at moderately high temps?

    So, to avoid the problem of epoxy failure at high temperature, what about using a high temperature rated epoxy such as Permatex 500-Degree High Heat Epoxy? I don't mean to single out Permatex because there are other companies that also sell epoxies rated for high temperature. Permatex just...
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    epoxy weakens at moderately high temps?

    Late to the party here, but I have read that T-88 is not approved for certified aircraft because it softens too much at high temperature, so perhaps it would not be a good idea to use it for homebuilt aircraft. There are high temperature epoxies available. For example, Permatex sells a...
  4. A

    Wanted Jodel D11 Sheet 6

    Would be interested in D11 wing spar drawing. I'm not sure what the drawing number is. I think it would be either D11-03 or D11-04 because I am missing those two. Actually, finding both D11-03 and D11-04 would be ideal.
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    Wanted Jodel D11 Sheet 6

    Any updates on this?
  6. A

    Wanted Jodel D11 Sheet 6

    Any updates?
  7. A

    LVL verses plywood

    According to the wikipedia article on laminated veneer lumber it typically contains about 2.43% glue. Glue would have a specific gravity of about 1.4 which translates to 87 lb/ft3. If we assume that a sample of LVL is made of douglas fir (assuming 33 lv/ft3 for the doug fir) the calculated...
  8. A

    Pictures of my 1835 cc, flywheel drive VW engine project

    I understand that a flywheel drive VW saves a few pounds and a few dollars compared to a front drive VW. Question: are there any advantages of a front drive over a flywheel drive engine? Bonus question, if it is not too far off-topic, what about a re-drive engine from Great Plains Aircraft?
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    Wanted Jodel D11 Sheet 6

    Hi, It looks like your photos might be missing the upper right hand portion of the drawings. Is there any chance you to photograph that part and post it as well?
  10. A

    Wanted Jodel D11 Sheet 6

    I think that all of the free plans on the internet are incomplete, even those that claim to be complete. For example, I don't think any of them include the plans for the wing spar.
  11. A

    LVL verses plywood

    One source lists the modulus of elasticity for LVL as being 25% greater than spruce and the modulus of rupture as being twice that of spruce. https://ultralam.com/products/laminated-veneer-lumber-lvl/ However, that source is short on details, such as what species and grade of spruce is used in...
  12. A

    LVL verses plywood

    Thanks. Where can I find ANC-18? Never mind. I found a source for ANC-18. Is it the 1944 version I should look at?
  13. A

    LVL verses plywood

    In the typical manufacturing process for LVL they grade the logs before cutting the veneers, and the veneers also individually graded using automated machines and defects are cut out before they are laid up into billets. The processes are subjected to very rigorous quality control. The resulting...
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    LVL verses plywood

    The problem with gluelam is that they are made of thick boards, so if you rip to size there will be a lot of relatively poorly supported butt joints in a given piece. There would be butt joints in a piece of ripped LVL as well, but because the laminations are thin there will be a lot of...
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    LVL verses plywood

    Strength, uniformity, availability, and possibly cost.
  16. A

    LVL verses plywood

    Please see my edited post of a few minutes ago. I added some info on strength/weight ratio.
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    LVL verses plywood

    Yes, that's what I meant.
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    LVL verses plywood

    When I say "100% tested" I don't mean tested to failure. I mean that all of the parts are tested to some specified value, such as the strength values of sitka spruce. Since most grades of LVL are stronger than sitka spruce the LVL would presumable pass without breaking, and if a given piece were...
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    LVL verses plywood

    Hi, Coming a bit late to the discussion.... What about using re-sawn lvl lumber, e.g. making stringers and such from pieces cut out of lvl lumber? The lumber companies do not guarantee that resawn lvl meets full strength specifications, but what about strength-testing each resawn piece? Would...
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    new engine supplier: based on suzuki engines

    Thanks. Very informative.
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