Go Back  RCU Forums > RC Boats > Speed - RC Nitro Boats
Reload this Page >

My 3' 5" long bullnose hydro

Notices
Speed - RC Nitro Boats For all your rc nitro fuel burning boating needs.

My 3' 5" long bullnose hydro

Old 08-08-2007, 02:14 PM
  #1  
500 lb. koolaid man
Senior Member
Thread Starter
 
500 lb. koolaid man's Avatar
 
Join Date: May 2006
Location: Palm Harbor, FL
Posts: 1,462
Likes: 0
Received 0 Likes on 0 Posts
Default My 3' 5" long bullnose hydro

I bought this boat yesterday for $30 with no engine, it's a very old bullnose hydro, 3' 5" long. It also came with the Octura drive system, fuel tank, receiver and two servos. It's set up for nitro. Where the engine screws into the rails, it's about 1.5" hole to hole. The widest opening, above the engine mounts, is 3 1/4" wide. The prop that was also included is plastic. The way the boat is set up now, there is no flex shaft, just a solid copper rod running across part of the bottom of the boat. At the end of this copper rod is a dogbone, which must have hooked up to the engine. It turns by the drive on the back pivoting. It will take some work, but it will most likely recieve a modded .90. Does anyone know what model this boat is?

Feel free to post comments! I don't know much about this boat at all.

Here are all the original pictures that were in the add. I'll post better pictures of the drive and engine mount later today.
Attached Thumbnails Click image for larger version

Name:	Jh14456.jpg
Views:	17
Size:	6.5 KB
ID:	738253   Click image for larger version

Name:	Kf11995.jpg
Views:	12
Size:	6.5 KB
ID:	738254   Click image for larger version

Name:	Ze85823.jpg
Views:	13
Size:	139.6 KB
ID:	738255   Click image for larger version

Name:	Zs51982.jpg
Views:	14
Size:	157.0 KB
ID:	738256   Click image for larger version

Name:	Zk69782.jpg
Views:	14
Size:	179.0 KB
ID:	738257   Click image for larger version

Name:	Tk75268.jpg
Views:	16
Size:	176.3 KB
ID:	738258   Click image for larger version

Name:	Ac65104.jpg
Views:	11
Size:	146.0 KB
ID:	738259   Click image for larger version

Name:	Ji28744.jpg
Views:	16
Size:	170.2 KB
ID:	738260  

Click image for larger version

Name:	Lj83758.jpg
Views:	15
Size:	177.6 KB
ID:	738261   Click image for larger version

Name:	Gs85674.jpg
Views:	15
Size:	157.2 KB
ID:	738262   Click image for larger version

Name:	Kq71016.jpg
Views:	17
Size:	176.2 KB
ID:	738263   Click image for larger version

Name:	Do62289.jpg
Views:	17
Size:	172.3 KB
ID:	738264  
Old 08-08-2007, 02:24 PM
  #2  
topfuel4430
Senior Member
 
Join Date: Nov 2005
Location: Decatur , GA
Posts: 259
Likes: 0
Received 0 Likes on 0 Posts
Default RE: My 3' 5" long bullnose hydro

Looks like an old Dumas kit to me. Miss Unlimited maybe? But I think they were only 36 inches long, not 41. (unless you are includng the length of the outdrive)

.90 sounds like a bit much, but to each his own!

Good luck!
~James
Old 08-08-2007, 02:51 PM
  #3  
500 lb. koolaid man
Senior Member
Thread Starter
 
500 lb. koolaid man's Avatar
 
Join Date: May 2006
Location: Palm Harbor, FL
Posts: 1,462
Likes: 0
Received 0 Likes on 0 Posts
Default RE: My 3' 5" long bullnose hydro

I just measured it out, 36.5" not including the outdrive, 41" with it included.
Old 08-08-2007, 03:02 PM
  #4  
topfuel4430
Senior Member
 
Join Date: Nov 2005
Location: Decatur , GA
Posts: 259
Likes: 0
Received 0 Likes on 0 Posts
Default RE: My 3' 5" long bullnose hydro

Ok, im sticking with the Miss Unlimited (U-12)

They were intended for use with a .30(ish) size engine. Id clean it up, put some new hardware on it and run it in the IMPBA Sport 40 class with a .45 size engine. They only went for about $36.00 new for the kit, but there is a lot of building time and effort to finish one. Either way you got a good deal. I remember seeing one on ebay a few years ago that was absolutely cherry, and very well built. All new and it went for 500 bucks. Probably some collector.

Should be a fun boat, I had one years ago....

~James
Old 08-08-2007, 06:30 PM
  #5  
Hydro Junkie
 
Hydro Junkie's Avatar
 
Join Date: Nov 2004
Location: Marysville, WA
Posts: 10,535
Received 130 Likes on 123 Posts
Default RE: My 3' 5" long bullnose hydro

Slow down James. Whoever built that boat had no clue as to what they were doing. With all the rounded corners and excess weight, it will take a .45 just to get it up on plane. I see a lot of work just to get it to the point of running, so here are my recommendations:
1) Trash the outdrive. All that weight will kill performance. Get a standard rudder and bracket and install them on the left side of the transom
2) Sand down the entire hull to bare wood(not including the deck if you like the look) and coat the hull with epoxy mixed with colloidal silica. Be sure to build up all outside corners and then sand smooth. Make sure all the corners stay sharp or you're wasting your time.
3) Install a flex or solid STRAIGHT(no dogbones) shaft with the appropriate stuffing box and strut. DO NOT DO THIS UNTIL THE ENGINE IS INSTALLED
4) Replace all the fuel and water lines.
5) Scrap the radio and get a new system. You can use a standard sized high torque for the rudder and a mini for the throttle. The way the servos are installed in the pictures is a crime.
That should get you started on your way to having a nice boat and not a piece of garbage
Old 08-08-2007, 07:30 PM
  #6  
Sean Bowf
Senior Member
 
Sean Bowf's Avatar
 
Join Date: Nov 2006
Location: Burkburnett, TX
Posts: 1,335
Likes: 0
Received 0 Likes on 0 Posts
Default RE: My 3' 5" long bullnose hydro

HJ, why move the rudder to the left side of the hull?? What adverse affect does it have if it is on the right side of the hull?

Sean
Old 08-08-2007, 10:51 PM
  #7  
Hydro Junkie
 
Hydro Junkie's Avatar
 
Join Date: Nov 2004
Location: Marysville, WA
Posts: 10,535
Received 130 Likes on 123 Posts
Default RE: My 3' 5" long bullnose hydro

on the left side, the servo pulls the pushrod while on the right it pushes. a pulled pushrod won't flex while a pushed one will
Old 08-09-2007, 04:43 AM
  #8  
topfuel4430
Senior Member
 
Join Date: Nov 2005
Location: Decatur , GA
Posts: 259
Likes: 0
Received 0 Likes on 0 Posts
Default RE: My 3' 5" long bullnose hydro

Slow down?

Those kits are older than dirt, and the way they built them back then is just like you see it. I was giving him an idea of what class that boat is suited for, and its suited for the sport 40 class. They run quite well with a .45 size engine. They will never be up to par with todays sport 40 boats due to weight and design, but it will still be quite fun. Certainly shouldnt try stuffing a Zenoah in like the other guys were "recommending", much less a .90 nitro. Like I said clean it up, get rid of the hardware for newer stuff, and it will be well on its way to running. Obviously the radio box (or lack of) will need attention. Its easy to assume that most people know this, but its not always the case, my fault for that. Install the rudder on the left or the right, either way will work just fine with the right set-up. There are plenty of fast, reliable boats that have the rudder set-up on the right side. Git rid of the hard shaft and put in a flex drive, get rid of the solid engine mount, and put in something more modern (speedmaster or equivilent). There are many ways to skin a cat, and depending on your experience, wallet, and expectations, you should go with what you feel is best.

Have fun. ~James
Old 08-09-2007, 07:26 AM
  #9  
f16man
 
Join Date: Nov 2005
Location: MANTECA, CA
Posts: 1,264
Likes: 0
Received 1 Like on 1 Post
Default RE: My 3' 5" long bullnose hydro

I don't see a turn fin on that boat .
Old 08-09-2007, 10:38 AM
  #10  
500 lb. koolaid man
Senior Member
Thread Starter
 
500 lb. koolaid man's Avatar
 
Join Date: May 2006
Location: Palm Harbor, FL
Posts: 1,462
Likes: 0
Received 0 Likes on 0 Posts
Default RE: My 3' 5" long bullnose hydro

It's not gonna be the fastest boat in the world anyways especially in comparison to the boats now days, I don't want to drop hundreds of dollars(The outdrive seems to be in great shape for example, and doesn't seem to weigh much) into this $30 dollar boat. This boat will never be raced. f16man, your right, no turn fin. Thanks topfuel4430 and Hydro Junkie for all of your comments, they are all appreciated! Maybe I'll drop more money into this boat in the future, BTW I like the fact that it's probably from around the 1940's, Thats partly why I bought it, it's a beautiful old wood boat. I didn't buy it to set the next r/c boats world speed record, and not that that would be possible anyways, but a modded .90 would still send her flying. So far, I plan to re-do the finish on the wood(definitely), get all new fuel and water lines(definitely), most likely replace the radio gear, and also most likely replace the gas tank.

Thanks for all of the advise, keep it coming.
Old 08-09-2007, 11:20 AM
  #11  
500 lb. koolaid man
Senior Member
Thread Starter
 
500 lb. koolaid man's Avatar
 
Join Date: May 2006
Location: Palm Harbor, FL
Posts: 1,462
Likes: 0
Received 0 Likes on 0 Posts
Default RE: My 3' 5" long bullnose hydro

I forgot to mention in my last post that I also will build up all outside corners following Hydro Junkies procedure, re-do some interior wood(broken pieces), radio box work(starting form zero), re-do the paint(or make it all wood finish), and also possibly some engine mounts work(redo), all that is a lot of work alone, plus more but I'm up to the challenge. Another thing, fix this crack that's behind the left sponson. The guy I bought the boat from admitted that the boat fell and that's where the crack came from.
Attached Thumbnails Click image for larger version

Name:	Ca82704.jpg
Views:	15
Size:	147.6 KB
ID:	738861   Click image for larger version

Name:	Ni24157.jpg
Views:	12
Size:	120.6 KB
ID:	738862  
Old 08-09-2007, 03:58 PM
  #12  
codtongue
Member
 
codtongue's Avatar
 
Join Date: Feb 2007
Location: leominster, MA
Posts: 83
Likes: 0
Received 0 Likes on 0 Posts
Default RE: My 3' 5" long bullnose hydro

I like the looks of that old outdrive, I'd say go old school and save your money, I wish I had found that for $30.00,
It looks like it would be a fun boat to run.
Old 08-09-2007, 04:45 PM
  #13  
mopartybob
 
Join Date: Jun 2006
Location: So.San Francisco, CA
Posts: 2,207
Likes: 0
Received 1 Like on 1 Post
Default RE: My 3' 5" long bullnose hydro

I like your thinking codtongue,If it was a newer build I would say yea replace it all,but i'm thinking "old school" too,we'll see what the kid sez....[:-]
Old 08-09-2007, 06:34 PM
  #14  
Hydro Junkie
 
Hydro Junkie's Avatar
 
Join Date: Nov 2004
Location: Marysville, WA
Posts: 10,535
Received 130 Likes on 123 Posts
Default RE: My 3' 5" long bullnose hydro

I know all about Dumas boats Topfuel. I've built a couple myself. I read your first post and thought you were sugesting making it a speed demon, hense the slow down. All in all, I think we are thinking along similar lines on this one.
Codtongue, with that outdrive, the boat will never run right. Excess weight can be the death of a hydroplane, especially a Dumas. In this case, spend the money on a rudder and bracket as well as a proper strut and shaft and throw the outdrive on a deep vee where it belongs
Old 08-12-2007, 08:29 AM
  #15  
500 lb. koolaid man
Senior Member
Thread Starter
 
500 lb. koolaid man's Avatar
 
Join Date: May 2006
Location: Palm Harbor, FL
Posts: 1,462
Likes: 0
Received 0 Likes on 0 Posts
Default RE: My 3' 5" long bullnose hydro

How should I fix the crack that's behind the left sponson? Would 5200 marine sealant be a good idea, apply then sand down smooth with fine grit sandpaper?

Thanks.
Old 08-12-2007, 09:17 AM
  #16  
f16man
 
Join Date: Nov 2005
Location: MANTECA, CA
Posts: 1,264
Likes: 0
Received 1 Like on 1 Post
Default RE: My 3' 5" long bullnose hydro

I think you could use an exacto knife and open the crack up a little and scrape some of the loose paint, mix up some 30 min. epoxy and spred the crack open a little and flow the epoxy into the crack with a toothpic sand smooth when dry.
Old 08-12-2007, 09:56 AM
  #17  
500 lb. koolaid man
Senior Member
Thread Starter
 
500 lb. koolaid man's Avatar
 
Join Date: May 2006
Location: Palm Harbor, FL
Posts: 1,462
Likes: 0
Received 0 Likes on 0 Posts
Default RE: My 3' 5" long bullnose hydro

f16man, thank you
Old 08-14-2007, 06:29 PM
  #18  
martno1fan
Senior Member
 
martno1fan's Avatar
 
Join Date: Jan 2005
Location: blackpool, UNITED KINGDOM
Posts: 11,390
Likes: 0
Received 2 Likes on 2 Posts
Default RE: My 3' 5" long bullnose hydro

who knows you might get it looking as good as this one
Attached Thumbnails Click image for larger version

Name:	Rp44805.jpg
Views:	14
Size:	277.2 KB
ID:	742177   Click image for larger version

Name:	Ql34327.jpg
Views:	12
Size:	137.7 KB
ID:	742178  
Old 08-14-2007, 07:05 PM
  #19  
500 lb. koolaid man
Senior Member
Thread Starter
 
500 lb. koolaid man's Avatar
 
Join Date: May 2006
Location: Palm Harbor, FL
Posts: 1,462
Likes: 0
Received 0 Likes on 0 Posts
Default RE: My 3' 5" long bullnose hydro

Yes, the possibility is there, and also faster than that boat with the motor that is soon gonna be dropped in, the modded .91[>:]

I might shoot for mostly no paint, just a sharp looking wood finish, like in this thread where it's also explained how it's done. Thanks to Mopartybob for showing me the link. http://www.rcuniverse.com/forum/m_56...tm.htm#5682001
Old 08-14-2007, 07:33 PM
  #20  
Hydro Junkie
 
Hydro Junkie's Avatar
 
Join Date: Nov 2004
Location: Marysville, WA
Posts: 10,535
Received 130 Likes on 123 Posts
Default RE: My 3' 5" long bullnose hydro

DON'T USE THE .91
Since you bought the boat from someone that didn't have a clue as to what they were doing, there is no telling how well built the boat is. That .91 will more than likely tear the boat apart. Look at it whis way, if the boat cracked from falling over, what's it going to do with that much torque and the pounding it's going to take on the water. The boat was designed for an old school .40, so use a .45 and call it good. Otherwise someone is going to get hurt. If you guys insist on using that outddrive and .91, don't expect any help or advice from me. But then again, what do I know? I only built my first boat in 1982, a 30" Dumas Pay N' Pak, followed by a 36" Dumas Atlas in 1986 and a score of scale boats after that
Old 08-14-2007, 08:17 PM
  #21  
mopartybob
 
Join Date: Jun 2006
Location: So.San Francisco, CA
Posts: 2,207
Likes: 0
Received 1 Like on 1 Post
Default RE: My 3' 5" long bullnose hydro

thanks hydro j for your honest assesment,I concur with you on the question of hull integrity and safety involved,jeff does have a 7.5 he can swap out and we're in the process of getting new hardware......
Old 08-16-2007, 09:42 AM
  #22  
500 lb. koolaid man
Senior Member
Thread Starter
 
500 lb. koolaid man's Avatar
 
Join Date: May 2006
Location: Palm Harbor, FL
Posts: 1,462
Likes: 0
Received 0 Likes on 0 Posts
Default RE: My 3' 5" long bullnose hydro

I've started to search for a .45 motor for the boat. So far, the only thing I've done is removed all the old hardware.

I'm starting to search for hardware now, and need some help finding it. I'm on a budget of around $80 for all of it.

Does anyone know of affordable high quality hardware that's the correct size?

Thanks.
Old 08-16-2007, 10:13 AM
  #23  
500 lb. koolaid man
Senior Member
Thread Starter
 
500 lb. koolaid man's Avatar
 
Join Date: May 2006
Location: Palm Harbor, FL
Posts: 1,462
Likes: 0
Received 0 Likes on 0 Posts
Default RE: My 3' 5" long bullnose hydro

The length in between the motor mounting holes(the two closest to the transom) and the transom is 19".
Here are some pictures I just took of the hardware removed.
Attached Thumbnails Click image for larger version

Name:	Db84235.jpg
Views:	19
Size:	179.7 KB
ID:	743201   Click image for larger version

Name:	Je99206.jpg
Views:	16
Size:	200.2 KB
ID:	743202   Click image for larger version

Name:	Af89282.jpg
Views:	14
Size:	170.7 KB
ID:	743203  

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off


Thread Tools
Search this Thread

Contact Us - Manage Preferences - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service -

Copyright © 2024 MH Sub I, LLC dba Internet Brands. All rights reserved. Use of this site indicates your consent to the Terms of Use.