Ice Boat or Sled
#1
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Ice Boat or Sled
Just looking for feedback on this thing I built. I had it on skis, but on other than packsnow or Ice, turnning was an issue at low speeds. Its on a kids sled and moves out. I need to stableize it somehow. So any suggestions would be appreaceated.
Here is a YouTube link:
http://www.youtube.com/watch?v=-oay6Erw6kM
http://www.youtube.com/watch?v=9muW0CRVAco
Here is a YouTube link:
http://www.youtube.com/watch?v=-oay6Erw6kM
http://www.youtube.com/watch?v=9muW0CRVAco
#2
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RE: Ice Boat or Sled
move the boat back a little on the sled - so the rudders are hanging off the back, right now the engine is almost centered, should be 1/3 of the way from the back.
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RE: Ice Boat or Sled
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ok will do! what do you think about adding a front fin? or should I just see how moving it works first? This is just something I have been playing with for years, but it always get airborne….
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RE: Ice Boat or Sled
ORIGINAL: Johnk71
it is tilted, maybe 10 degrees at a down angle. my thinking was that it would provide a downward thrust?
it is tilted, maybe 10 degrees at a down angle. my thinking was that it would provide a downward thrust?
thrust down therefore pushing the nose of boat down
#7
RE: Ice Boat or Sled
it is tilted, maybe 10 degrees at a down angle. my thinking was that it would provide a downward thrust?
if it was a pusher yes it would but as a puller do the opposite nose down thrust is up nose up thrust down therefore pushing the nose of boat down.
.
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RE: Ice Boat or Sled
Ok.... you two know why more then I.... Please look at the thing that we built and suggest (or tell me) what we should do to keep it from taking flight... Please. All I know is from what you (two) are saying is that up is down and down is up in relation to the bow and the pitch of the prop? Right?
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RE: Ice Boat or Sled
ORIGINAL: dadkins
move the boat back a little on the sled - so the rudders are hanging off the back, right now the engine is almost centered, should be 1/3 of the way from the back.
move the boat back a little on the sled - so the rudders are hanging off the back, right now the engine is almost centered, should be 1/3 of the way from the back.
then if it still wants to fly angle the front of motor level then down as needed (have to try it) then adjust
it took me about 10 runs to get my tour boat to stop bouncing