Robert, There is a minimum length requirement otherwise you’ll end up with warped exhaust valves from cyclic cooling. For estimating drag, a rule of thumb is to imagine each pipe extended 12-15 inches

Point of reference: A cold-call to Ly-Con about F1 horsepower several years ago resulted in a 1-1/2 hour discussion with their dyno technician. He told me that the O-200s on F1 racers produce about 16

“Most all” F1 racers are also at the back of the pack. Just sayin’.

See if what you need is in this .ZIP file. https://davidjgall.com/Q/LS(1)%20canard/LS(1)%20canard%20plans.zip

😆

Oh, my!

Bill, That’s unfortunate. I’m betting that person has impeccable credentials, too. There will always be those few and their ardent followers. Hard as one might try, one cannot force right-thinking. I

What do you need help with, Bill? First you want us to go to another group and immerse ourselves in their imbroglio and now you want to slap down someone you think is somehow lesser than you? You migh

Nooooooo! No no no no no no nooooooo! Those Keyboard warriors put more bullshit through my head in ten minutes of reading their collective ignorance than I’ve seen in FORTY YEARS of reading and studyi

Mike, did you notify the FAA since that’s a certified part? They might be interested.

EZ-87 is still available and is the slow hardener having a 5-hour pot life. EZ-84 is no longer available, but that was a low viscosity formulation for RTM (infusion). Last I checked, MGS was not avail

Yeah, that’s Mike alright. He’s walking without a limp and he bent down to get his hat out of the wreckage so it appears that he’s all good. Mike, you did good picking a landing site. It looks like yo

Michael, Fun history tangent noted. Regarding your reported airfoil discrepancies, is it possible that you are inadvertently comparing two different airfoils, the LS(1)-0417 from the NASA TM against t

Michael, Other than the general comments about tailoring the elevator hinge moment, I fail to see the relevance of the NLF(1)-0115 or the AS504X to the Quickie line of aircraft. They suffer from the s

Jay, Nice analysis. I’m heartened to see that someone else has independently concluded what I’ve been saying for years: the Roncz R1145MS airfoil is a better choice than the LS-1. The Roncz airfoil al

Hi Jay, I’m glad you asked; I was concerned about the aft shape of your airfoil approaching the trailing edge. It appears that the last ~15% of your shape is convex. That’s a big no-no aft of a hinge

Brian, Can you make a copy or scan of those instructions for the archives? The LS(1) canard plans that I have show different dimensions. Thank you, David J. Gall

Just playing catch up on the last two weeks of frantic Q-LIST activity…. OMG, Michael, the “Mad Rocket Scientist” (Drew) is a nice enough guy but he’s wrong fully ninety percent of the time when it co

Ian, Unfortunately, springs – whether gas springs or coil springs – are exactly the wrong choice here. I’m not going to go into a long dissertation; there are ample textbooks on the topic. Any compreh

Jay, You’re too kind <blush>. Start with CP59 page 5, titled “The Bungee Elevator Trim System.” This talks about elevator shape and trim speed. Then read CP43 page 1 to put the CP59 comments in contex