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How to get $25 boat running
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Eric1180 View Drop Down
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Posts: 1061 		  Quote Eric1180 Quote  Post ReplyReply Direct Link To This Post Topic: How to get $25 boat running
    Posted: 02/Jul/2010 at 1:01am
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Posts: 235 		  Quote maxx78 Quote  Post ReplyReply Direct Link To This Post Posted: 02/Jul/2010 at 9:03pm
I would use:
52mm rudder
55mm stinger
a 2040 4300kv (from Hobbyking)
water cooling from r2hobbies
 
Your schematic how to install the hardware is totally wrong (sorry)
 
You have to install motor and shaft in one line ! no unversial u-joints 
 
normally you install the shaft so, that the beginning of the propeller blades is 10% of the hull length from the Stern, means in this case 38.5 mm. And it should be at a 2° Angle.
 
Look at the red boat on page 14 and 18 in the link:
 
 
Its all german.....
 
 
Best Regards Max
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Posts: 235 		  Quote maxx78 Quote  Post ReplyReply Direct Link To This Post Posted: 02/Jul/2010 at 9:05pm
By the way www.rc-raceboats.de/forum has a nice forum, even with a english section.
 
Or you try rumrunners, its an american forum for Fast Electric boats.


Edited by maxx78 - 02/Jul/2010 at 9:05pm
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Eric1180 View Drop Down
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Posts: 1061 		  Quote Eric1180 Quote  Post ReplyReply Direct Link To This Post Posted: 03/Jul/2010 at 12:29am
Thanks a lot so 10% i like number i can go by.  2° down? 
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Posts: 235 		  Quote maxx78 Quote  Post ReplyReply Direct Link To This Post Posted: 03/Jul/2010 at 5:14am
yes.
 
maybe this picture helps:
 
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Posts: 1061 		  Quote Eric1180 Quote  Post ReplyReply Direct Link To This Post Posted: 04/Jul/2010 at 3:11am
that skmatic i found i just put it there so i knew what stuff was called. So a 52mm rudder or maybe a 75mm i am starting to think 75 from stuff i have read.. like one spot i read 52mm is good for 12-15in but whats 1 extra inch.

So any idea how fast about this size with that motor on 2S will go i have no idea i am new into boat's 
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Posts: 235 		  Quote maxx78 Quote  Post ReplyReply Direct Link To This Post Posted: 04/Jul/2010 at 3:42pm
Hi!
Speed should be like here:
 
 
the problem is that the Hull has no steps and will be a little bit harder to set up for high speeds. But it will be enough to p*ss your pants, since its your first raceboat.Big smile
 
And start with a small propeller, say around 29 mm diameter.
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Posts: 532 		  Quote dude7422 Quote  Post ReplyReply Direct Link To This Post Posted: 12/Jul/2010 at 9:59pm
this cobra is so small i could run it when the street floods 3 inches of water??lol
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Posts: 1061 		  Quote Eric1180 Quote  Post ReplyReply Direct Link To This Post Posted: 17/Jul/2010 at 9:32am
Originally posted by dude7422

this cobra is so small i could run it when the street floods 3 inches of water??lol
Thats exactly what i would do next time it floods. Lucky in texas flooding happens very easily considering for 90% of the year it never rains. Dead
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