5' pt boat
01-20-2007, 02:33 PM
#28
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RE: 5' pt boat
A little bit of grease in the rudder tubes will help keep out the water.
Also, the tops of the rudder tubes are typically above the water line.
At least that is how I typically build mine. This way little or no water
ever gets in via the rudder tubes.
Also, the tops of the rudder tubes are typically above the water line.
At least that is how I typically build mine. This way little or no water
ever gets in via the rudder tubes.
01-21-2007, 02:43 AM
#29
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RE: 5' pt boat
If you're worried about water getting in, put in an automatic bilge pump. It'll detect any dangerous amount of water and turn on, pumping out the water until the ship isn't in any danger. Standard practice in Model Warship Combat, where a little water from rudder tubes is the least of your concerns.
Umi gave good advice. Those're the easiest and cheapest things you can do, and it'll have the most effect. You only need a bilge pump if you're going into combat, seriously heavy seas, or you're on the water for days at a time.
Umi gave good advice. Those're the easiest and cheapest things you can do, and it'll have the most effect. You only need a bilge pump if you're going into combat, seriously heavy seas, or you're on the water for days at a time.
08-02-2007, 11:57 AM
#32
RE: 5' pt boat
all done take a look at the end of the forum thanks guys for all the help rye
http://www.rcuniverse.com/forum/forumid_77/tt.htm
http://www.rcuniverse.com/forum/forumid_77/tt.htm
01-05-2008, 11:02 AM
#36
RE: 5' pt boat
hey cyclops
well i decide to go with two esc and two batterys ,i blew the the esc last sept but got it fix under warraenty so i order a second ,i wish i would of made the hole top removeable, just the center part on mine had to rewire and add a second on -off switch a lot of work in a small space almost like operation good thing i have a freind who is good at this and small hands ,cant wait until march to try her again should be more power and time on the water, thanks rye
well i decide to go with two esc and two batterys ,i blew the the esc last sept but got it fix under warraenty so i order a second ,i wish i would of made the hole top removeable, just the center part on mine had to rewire and add a second on -off switch a lot of work in a small space almost like operation good thing i have a freind who is good at this and small hands ,cant wait until march to try her again should be more power and time on the water, thanks rye
01-06-2008, 04:06 PM
#37
RE: 5' pt boat
Way to go rye.
I had those same problems with the under 30" PT's. If you blow up my postings you will see the completed frames & keel of a 85' ASR boat designed by Sparkman & Stephens for the USN in the mid 40's. It is 5'. Was 2 Packard PT engines with 1 twin 50 cal. in the stern deck.
All small boats are deck assembled, Then I cut and brace 1 or 2 flat raised deck hatches to make life fun. The 8' boat has a rudder access hole under the rear 20 mm gun deck plate.
Rich
01-09-2008, 06:11 PM
#38
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RE: 5' pt boat
Hello Rye,
In my opinion, if i were to run a 5' PT boat, i would use 3 Astroflight 25's or 40's direct drive. They are very reliable motors and will easily run your boat. The motors have a variable voltage range so that you can decide how fast the boat will go full throttle by X amount of volts added. (see astroflight motor specs)
I am overhauling a Dauntless (4' 1.5"), in which the hull is based on a PT boat design. I will be running it on (2 )Astroflight 25's with (2) Astroflight Harbor Master speed controls. (That speed control is supposed to be very good and also has reverse) That will give Dauntless plenty of power to plane out and look very scale when underway.
The original Dauntless ran on (2) Packard PT boat engines and was 66' long topping out at 40+ knots.
PT boats ran on (3) Packard engines at 78-80 something feet long and topped out around 40 knots.
Hope this helps.
Best of luck.
-Rich.
In my opinion, if i were to run a 5' PT boat, i would use 3 Astroflight 25's or 40's direct drive. They are very reliable motors and will easily run your boat. The motors have a variable voltage range so that you can decide how fast the boat will go full throttle by X amount of volts added. (see astroflight motor specs)
I am overhauling a Dauntless (4' 1.5"), in which the hull is based on a PT boat design. I will be running it on (2 )Astroflight 25's with (2) Astroflight Harbor Master speed controls. (That speed control is supposed to be very good and also has reverse) That will give Dauntless plenty of power to plane out and look very scale when underway.
The original Dauntless ran on (2) Packard PT boat engines and was 66' long topping out at 40+ knots.
PT boats ran on (3) Packard engines at 78-80 something feet long and topped out around 40 knots.
Hope this helps.
Best of luck.
-Rich.
01-10-2008, 09:56 PM
#39
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RE: 5' pt boat
hey rich
thanks when i did this last year i made some bad decisions on motors and batterys ,blew a speed controler so now i have two esc and two batterys runs all right for my frist scatch build ,knowing what i know now next boat will be better it dose get up on plane some what and runs about 20-25 minutes it would be to much work and money to do this now rather but it into my next boat a gaint tug 49" have a look but this kit is 680 dollar form the uk shipping is out of this world http://www.tynemodels.co.uk/northsider/northsider.htm thanks rye
thanks when i did this last year i made some bad decisions on motors and batterys ,blew a speed controler so now i have two esc and two batterys runs all right for my frist scatch build ,knowing what i know now next boat will be better it dose get up on plane some what and runs about 20-25 minutes it would be to much work and money to do this now rather but it into my next boat a gaint tug 49" have a look but this kit is 680 dollar form the uk shipping is out of this world http://www.tynemodels.co.uk/northsider/northsider.htm thanks rye
01-12-2008, 09:55 PM
#42
RE: 5' pt boat
hey
just found this maybe? its a lot less and its here in the states rye
http://www.rcscalemodel.com/Amsterda...boat%20Kit.php
just found this maybe? its a lot less and its here in the states rye
http://www.rcscalemodel.com/Amsterda...boat%20Kit.php
01-13-2008, 09:36 AM
#43
RE: 5' pt boat
BUY IT NOW!!!!!!!!!! Go for the best price.
I built and run it with kids. A LARGE Pittman 12 volt motor, 12 volt gell cell, Octura prop# 2.8 is a plastic one for a .187" shaft size, will move out with a churning mound of water at the stern. It has a 5" pitch. The tug PUSHES a huge bubbling bow wave.
Look on the bottom shelf under the PTB. That is the Amsterdam compared to a 8' ptb.
Rich
02-10-2008, 04:41 PM
#44
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03-08-2008, 12:40 PM
#45
RE: 5' pt boat
If anuone ever needs ACCURATE plans of PTB try to buy ....Al Ross Coastal Defense Forces...... They are perfect for scaling up and the shape is perfect. NO modifiying frames or spacing.
05-18-2008, 05:25 PM
#46
RE: 5' pt boat
hi
just a up date on the pt boat, well i blew up the one esc last year and ended up getting two esc and 2 gelcell ,mounted them in the back so now the boat get up on plane fast and runs about 30-40 minutes ,got all four cooling jets to work just a little water in the back nothing to worry about ,i have a pump back there anyways it started when i desolder the jet pipe to turn in more into the prop maybe the expoy got lose i find out next week , any i painted the bottom of the hull ,hullred ,i am a much happyer camper findly got it running right thanks guys and girlumi-for ll your help rye
just a up date on the pt boat, well i blew up the one esc last year and ended up getting two esc and 2 gelcell ,mounted them in the back so now the boat get up on plane fast and runs about 30-40 minutes ,got all four cooling jets to work just a little water in the back nothing to worry about ,i have a pump back there anyways it started when i desolder the jet pipe to turn in more into the prop maybe the expoy got lose i find out next week , any i painted the bottom of the hull ,hullred ,i am a much happyer camper findly got it running right thanks guys and girlumi-for ll your help rye
05-26-2008, 04:55 PM
#47
RE: 5' pt boat
hi
i got video look here
http://www.youtube.com/watch?v=gynvW...&feature=email but chick on high quality under views shes 5 ' long
i got video look here
http://www.youtube.com/watch?v=gynvW...&feature=email but chick on high quality under views shes 5 ' long
11-22-2008, 09:10 AM
#48
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04-29-2010, 07:00 AM
#50
RE: 5' pt boat
hi guy
well i change props on my pt ,went down in size and pitch loss a little bow height but got more speed and running time ,i went from 1-1/2 to 1-1/4 with less pitch now the back end dont plow in as much pickup about 8 munites running time also made bigger rudders help in turn a lot thanks for all the help ,rye
Read more: http://www.rcuniverse.com/forum/m_49...#ixzz0mUPyRm00
well i change props on my pt ,went down in size and pitch loss a little bow height but got more speed and running time ,i went from 1-1/2 to 1-1/4 with less pitch now the back end dont plow in as much pickup about 8 munites running time also made bigger rudders help in turn a lot thanks for all the help ,rye
Read more: http://www.rcuniverse.com/forum/m_49...#ixzz0mUPyRm00
