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  1. Vern.Smith

    What Wheels to use for 35% plane?

    Will do, thanks for the tip.
  2. Vern.Smith

    What Wheels to use for 35% plane?

    I always appreciate it when someone agrees with any of my analyses :) His location brings up another point that has been a problem for me since I started making products for the RC flyers. I sell about 10% of my products through my web site to the international market. I have a distributor on...
  3. Vern.Smith

    What Wheels to use for 35% plane?

    Without any more comments on shock absorption let me try to help in analyzing the structure in your ARF and what is the best way to repair damage to the landing gear area. The ARF designer put the majority of the fuselage strength into the engine box and the wing tube attachment area. These are...
  4. Vern.Smith

    What Wheels to use for 35% plane?

    Agreed, but you will never distribute the load absorption in an inch of tire that you can distribute through twelve inches or so of carbon fiber or T6 aluminum. Tires are designed to provide adhesion with the surface they roll in. Springs, whatever their makeup, are the suspension system and by...
  5. Vern.Smith

    What Wheels to use for 35% plane?

    Our tires are a higher durometer ( hardness) than Sullivan or Du-bro tires, and this is intended. Also, a metal hub will have an effective shock absorption rate close to zero. While the tire is expected to absorb a small percentage of the shock loads from the landing gear, ninety percent of the...
  6. Vern.Smith

    Pilot RC 122" Extra 330SC

    Here is a picture of our two largest tail wheel springs. The largest one lifts the back of the airplane six inches off the ground which is more than adequate for a nuclear harrier :) If you go to our web site you will see "drawing and dimensions" below each of our tail wheels. If you click on...
  7. Vern.Smith

    IMAC Dalton Yak 54, 38% please submit suggestions here....

    Sorry for the bushing rattle that is part and parcel of the hard urethane spoked tail wheels. I try to warn all my customers of this eventuality when operating on hard surface runways but some probably slip through. I do discuss this problem on my web site but I have learned from bitter...
  8. Vern.Smith

    Sport Beautifying the Beast

    Mr. Kanuk, Will your "metal" bushings press into the aluminum wheels? Are they bronze or oil lite material? I admire your modeling abilities, this is a major project :)
  9. Vern.Smith

    Wheels!

    It's nice to see that most of our users feel we make a good wheel. Another feature of our wheels that never gets much attention is the easily replaced bushings when the wheels get a little wobbly on the axles. This is a lot cheaper than a new set of wheels. I know we aint cheap but short of a...
  10. Vern.Smith

    Just plain sexy!

    I understand the whole wheel pant mystique, Giant Scale started as a semi scale modeling idea and I hope it stays there. I try to make visually pleasing products because they sell better and with my CNC machines it is a natural. After ten years of shipping basically the same product I have...
  11. Vern.Smith

    Just plain sexy!

    If I can get it by the PC folks I'll use it, you got mad at me a couple of years ago for offering an expensive alternative to a manufacturing defect. Bartman- I did a lot of work four or five years ago with the intent of making spats and wheel pants that were top quality and state of the art. I...
  12. Vern.Smith

    IMAC Dalton Yak 54, 38% please submit suggestions here....

    Very nice work, congratulations.
  13. Vern.Smith

    IMAC Dalton Yak 54, 38% please submit suggestions here....

    Cam, it looks to me like this plane needs the extra large carbon fiber spring. It will raise the tail an additional two inches off the ground. I think your assumptions for air hole exit sizes are a little excessive. Below is a link to a table for air density and specific gravity verses...
  14. Vern.Smith

    IMAC Dalton Yak 54, 38% please submit suggestions here....

    Yes, I can see you have taken the low pressure exit lip concept to heart in a big way :) Now if you can get some cool air to the induction system it will be even better. Can you put one of your on board sensors close to the carburetor intake to see what the temperature of the air the engine is...
  15. Vern.Smith

    IMAC Dalton Yak 54, 38% please submit suggestions here....

    You have put together a very good system to cool the cylinders by forcing all the incoming air through the fins on the cylinders and then down the back of the engine to what should be a pretty large exit hole in the bottom rear of the cowl. Unfortunately, this system creates a dead air space...
  16. Vern.Smith

    IMAC Dalton Yak 54, 38% please submit suggestions here....

    "temps are in low 300's or high 200's on a hot summer day. Should be OK!! But i see what you are saying!!" Where are you taking these temps and with what measuring devise?
  17. Vern.Smith

    IMAC Dalton Yak 54, 38% please submit suggestions here....

    Cam, It looks like you are making the best of a very bad situation. The hotter the induction system is the harder it is to get consistent fuel mixture. With a four cylinder engine this will be even harder. I wonder why someone would do such a beautiful job of fabricating those stainless steel (...
  18. Vern.Smith

    GSN Thanks New Advertiser, White Rose Engineering

    Thanks for the complements, we will continue to supply top quality products until the off shore guys figure out how to do it. With American GDP growing at 3 plus percent and the rest of the world fighting off deflation the prospects for American manufacturing are not good. The dollar will...
  19. Vern.Smith

    Prop bolts....what's the consensus?

    This will undoubtedly bring slings and arrows but the engineering and product specs on fasteners has been around since the nineteen thirties. Problem is they are all based on the proposition that the bolt will be holding two things together in tension and that the two objects are non...
  20. Vern.Smith

    Tail Wheel Steering, Springs vs Fuel Tubing or other setups

    Springs work very well, the bottom line is getting the plane accurately and safely to and from the staging area. If you are doing that how the tail wheel steering is accomplished is irrelevant.
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