SMALL - espritmodel.com SMALL - Telemetry SMALL - Radio
Reply
Thread Tools
Old Oct 07, 2008, 09:55 PM
Registered User
south shore MA.
Joined Oct 2008
181 Posts
Build Log
scale down east tuna boat

hello everyone, Just wanted to post some pics of my project. It is a 26" down east hull that i made the mold for. this particular models scale is 3/4 to 1' so she would be 34 ft long in scale. i am building her as a commercial tuna boat than anyone would see in our area(New england) she is remote contol and I am waiting on some props so I can sea trial her. comments and critisizm is welome. this is not my first custom build, ive done a few when i was younger.
also these hulls are avalible for sale or swap, also I am working on a 27" carolina style twin screw hull.........ill post pics when it is done.
CMEboston is offline Find More Posts by CMEboston
Last edited by CMEboston; Oct 25, 2008 at 06:54 PM.
Reply With Quote
Sign up now
to remove ads between posts
Old Oct 07, 2008, 10:40 PM
If it flies, I can crash it.
sleb's Avatar
Cleveland, Ohio, United States
Joined Nov 2003
1,513 Posts
CME,
It looks good, you need to post pics of the interior so we can see what the motor set up looks like, thanks
Steve
sleb is offline Find More Posts by sleb
Reply With Quote
Old Oct 07, 2008, 11:04 PM
USA'd ex Brit
toesup's Avatar
Back.. In California
Joined Aug 2006
5,783 Posts
Quote:
Originally Posted by CMEboston
Just wanted to post some pics of my project. It is a 26" down east hull that i made the mold for.
Welcome CME

Nicely done with the hull... and looks like it could be an interesting build.

Please keep us informed of progress.. with pics too...
toesup is offline Find More Posts by toesup
Reply With Quote
Old Oct 08, 2008, 08:11 AM
Registered User
south shore MA.
Joined Oct 2008
181 Posts
the motor is attached to a crossbeam with Aviation ty-raps and connected to the 3/16 shaft with a product i use to mount/insulate Marine electronics, it is called a well-nut. the motor is out of a cordless drill, the battery packs are custom made by me from "lowes clearance rack" 12 volt ni-cad battery packs ($1.50 each if I recall...I bought all of them) the radio is actually a Futaba from one of my airplanes (I know I am not sussposed to use it..its all I have) when I get some more cash Ill get a new transmitter and reciver. the rudder is home made balsa, I need to cut an acess hatch in the trunk cabin to show the electronics so Ill post some more pics later on today/
CMEboston is offline Find More Posts by CMEboston
Last edited by CMEboston; Oct 08, 2008 at 10:08 AM.
Reply With Quote
Old Oct 08, 2008, 08:26 AM
Registered User
DaveMainzone's Avatar
Framingham, MA
Joined Feb 2008
41 Posts
Quote:
Originally Posted by CMEboston
the motor is attached to a crossbeam wit Aviation ty-raps and connected to the 3/16 shaft with a product i use to mount/insulate Marine electronics, it is called a well-nut. the motor is out of a cordless drill, the battery packs are custom made by me from "lowes clearance rack" ni-cad battery packs ($1.50 each if I recall...I bought all of them) the radio is actually a Futaba from one of my airplanes (I know I am not sussposed to use it..its all I have) when I get some more cash Ill get a new transmitter and reciver. the rudder is home made balsa, I need to cut an acess hatch in the trunk cabin to show the electronics so Ill post some more pics later on today/
How did you align the shaft with the motor? How did you connect shaft to motor?
DaveMainzone is offline Find More Posts by DaveMainzone
Reply With Quote
Old Oct 10, 2008, 08:53 AM
Registered User
south shore MA.
Joined Oct 2008
181 Posts
the motor is attached to the shaft with a rubber coupler with 10-32 thread on one end and ty-raps on the motor side(see pics) precise alignment is not needed. here are some more pics of the running gear and electronics
CMEboston is offline Find More Posts by CMEboston
Reply With Quote
Old Oct 12, 2008, 12:31 AM
Registered User
Boston, MA
Joined Jan 2007
437 Posts
Quote:
Originally Posted by CMEboston
the motor is attached to the shaft with a rubber coupler with 10-32 thread on one end and ty-raps on the motor side(see pics) precise alignment is not needed. here are some more pics of the running gear and electronics
A-a, you got the right shape of one our classic NE fishing boats. It's turning out a very beautiful boat, indeed.
HoaRC is offline Find More Posts by HoaRC
Reply With Quote
Old Oct 12, 2008, 02:58 PM
Registered User
Ironman929's Avatar
Canada, BC, Victoria
Joined Nov 2006
306 Posts
Quote:
Originally Posted by CMEboston
the motor is attached to the shaft with a rubber coupler with 10-32 thread on one end and ty-raps on the motor side(see pics) precise alignment is not needed. here are some more pics of the running gear and electronics
Ok I'm no expert, but would the ty-raps melt or loosen when the motor gets hot? Is this a temp solution while you set things up?
Ironman929 is offline Find More Posts by Ironman929
Reply With Quote
Old Oct 12, 2008, 06:49 PM
Registered User
south shore MA.
Joined Oct 2008
181 Posts
no its not temporary, im not worried about the motor getting that hot, if a motor will melt ty- raps wont it melt say, A plastic hull? or set balsa ablaze?...guess we will see!!!
CMEboston is offline Find More Posts by CMEboston
Reply With Quote
Old Oct 12, 2008, 06:52 PM
Registered User
south shore MA.
Joined Oct 2008
181 Posts
also I mean the ty raps on the motor side of the coupler, mabye i can use metal ty raps on the motor it self if it causes a problem, but then the wooden motor mount would need to be changed, I am more worried about the SC heat sink in the cabin getting to hot.
CMEboston is offline Find More Posts by CMEboston
Reply With Quote
Old Oct 18, 2008, 12:47 PM
Registered User
Boston, MA
Joined Jan 2007
437 Posts
Just my two cents.

CMEboston,

Let me pitch in and list the set up you are running so that other members can pitch in as well.

You have the following and you don't wanna dump any more $ into RC's, so you wanna work with what you already have.

26" boat
7.2 volt, 380 size high rpm rc car motor
Tamiya mechanical speed controller
2" graupner 4 blade plastic prop or 3 blade prop
Battery: NiCd 8 1200 Mah cells or 9.6 volt
HoaRC is offline Find More Posts by HoaRC
Reply With Quote
Old Oct 19, 2008, 06:49 PM
Registered User
south shore MA.
Joined Oct 2008
181 Posts
thank you HoaRC !!
here is a copy of the sea trial post








brought the model to the pond today for the first time. scale speed is pretty good, she sits way to high on the water line, and battery performance is very dissapointing. as stated in my other thread my packs are custom made to fit under the deck and are made from clearance rack cordless tool batteries(scored a 24 volt pack, 20 1.2 volt cells for $2 today ) and the ones I ran today were 8 1200 Mah cells or 9.6 volts. I think she is over propped though, I am running a 2" graupner 4 blade plastic prop and she needs more RPM's(I think) and can run wide out for about 5 min. then the Pack gets pretty warm. ill try the 3 blade prop tomorrow and hopefully that will give me some longer run times. also I have no idea as to what the motor is, I got it out of an old r.c car that had 7.2 packs, would this give me issues?
also just realized my Dynamite mega 2 instructions say it will charge 6 or 7 cells.......oops I have 8. do you think this is critical? also was thinking of wiring 2 9.6 packs(8 cells) in parallel to double my amperage, if I do this will I have to charge one pack at a time? or can I charge them together, essentially making them one battery?

ill keep everyone posted as to my progress
thanks in advance.
CMEboston is offline Find More Posts by CMEboston
Reply With Quote
Old Oct 19, 2008, 07:15 PM
Registered User
south shore MA.
Joined Oct 2008
181 Posts
trialed again with the 3 blade prop and I dropped 2 cells ( again thank's HoaRC!!)
and got a few more minutes out of her. then I put 2 packs in paralell and she ran for almost ten minutes.
it's not that money is an issue i really just wanted to get her together before the freeze with what I have. ill probably build another one over the winter, also want to make tooling for a cap deck and wheelhouse as my goal is to sell the boat as a kit.
CMEboston is offline Find More Posts by CMEboston
Reply With Quote
Old Oct 24, 2008, 10:23 PM
Registered User
south shore MA.
Joined Oct 2008
181 Posts
well iv'e lost my camera so we will have to wait for pics but I have built a new cabin roof and intergrated a new muffler/stack and mast with a crows nest to help align the detachable cabin top. iv'e also started constructing a folding tuna pulpit. I put a coat of black bottom paint on her. ill post pics when I find our camera
CMEboston is offline Find More Posts by CMEboston
Reply With Quote
Old Oct 25, 2008, 07:04 PM
Registered User
south shore MA.
Joined Oct 2008
181 Posts
update/found camera

here are some pics of the new roof/tower and pulpit, the roof and other hatches are held down with glass ball push pins. what do you guys use to seal balsa for paint? I think the next model is gonna use plastic.
CMEboston is offline Find More Posts by CMEboston
Reply With Quote
Reply


Thread Tools

Similar Threads
Category Thread Thread Starter Forum Replies Last Post
Discussion Check Out New Video Of My Scale Rc Glider !!! Huston Sailplane Talk 8 Oct 04, 2007 10:42 AM
Discussion Check Out New Video Of My Scale Rc Glider !!! Huston Scale Sailplanes 10 Oct 04, 2007 06:42 AM
Help! Trying to scale down my markings I'm Rick James The Builders Workshop 6 Jun 12, 2007 08:15 AM
Discussion My Curtis flying boat project....a fun scale indoor/parkflyer Thomas B Waterplanes 11 Apr 21, 2006 01:57 PM
Alert Looking for a new canopy for my HB (not scale)?! (And a few Related Qs...) Minimole Micro Helis 23 Mar 10, 2005 02:59 AM