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R/C's For the Sea Ships, Boats, Subs! If it belongs in the water put it here!


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  #1  
Old 05-17-2010, 06:35 PM
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Default NQD Jet Boat...

Since getting this NQD Jet Boat, I've been hooked. I've never been a big boat fan as the fear of loosing everything has kept me away. I've let loose and been having a ton of fun with this little boat.


First time in the water...

http://vimeo.com/11608326

Running in a real shallow creek...

http://vimeo.com/11637463

Hitting up the park down the street...

http://vimeo.com/11675472

The following night at the same park and the boy(4 1/2 years old) shot most of the video! My favorite so far just because he shot the video...

http://vimeo.com/11704079

Current as of 5/16 playing at Eagle Fern Park..

http://vimeo.com/11796290
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  #2  
Old 05-18-2010, 02:32 PM
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WOW awsome .i find myself drawn towards boats as of late i already have one unknown brand that need,s electronics . not a jet boat though i would love the NQD where can i get one any help appreciated thanks and great video.s
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Old 05-18-2010, 11:13 PM
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Originally Posted by yaleforscale View Post
WOW awsome .i find myself drawn towards boats as of late i already have one unknown brand that need,s electronics . not a jet boat though i would love the NQD where can i get one any help appreciated thanks and great video.s
They have white or yellow...
http://www.raidentech.com/17wajetrcelr.html

Only thing stock on mine is the hull. Upgraded jet drive, ESC, motor 3s lipo, etc...
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Old 05-18-2010, 11:35 PM
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any more info on the upgrades?? pics??
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Old 05-19-2010, 12:10 AM
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any more info on the upgrades?? pics??

- Graupner Mini-Jet Drive #2349
- Traxxas waterproof Velineon XL-3s ESC and Velineon 3500kv motor
- Spektrum DX2.0 radio
- Losi MRC stock steering servo
- 3s lipo battery
- Home built water cooling setup

Crappy cell phone image showing off the guts... It's a tight fit with the 1/10 scale gear in there. Most run the Traxxas 1/16 Velineon system since it'll bolt right into the stock jet drive unit and it's much smaller.




I want to build another NQD boat but use the 1/16 Velineon system for my son. This boat has too much bottom end and he can't control it very well.
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Old 05-19-2010, 08:53 AM
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hi thanks for that i think i will purchase this boat iam no stranger to moding toys to hobby grade only thing that i might get stuck on is the water cooling not realy sure about that p,s could you post some pics of how you did the water cooling ,many thanks

Last edited by yaleforscale : 05-19-2010 at 05:58 PM.
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Old 05-19-2010, 10:08 AM
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pretty sweet. thanks for the overview
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Old 05-19-2010, 10:49 AM
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That is awesome! I have been trying to find a small jet boat to run around a little creek behind work at break time. I am going to order one of these and try it out I think, thanks for the link.
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Old 05-19-2010, 08:40 PM
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hi thanks for that i think i will purchase this boat iam no stranger to moding toys to hobby grade only thing that i might get stuck on is the water cooling not realy sure about that p,s could you post some pics of how you did the water cooling ,many thanks

Pretty simple really. Need a way to move water and using the jet drive unit is the best way IMO.. drill a small hole in the stator and add a tube to be used as a pick up device. Then run rubber tubing from that to the item that needs cooling. On my boat it run over the ESC first then goes to the motor where aluminum tube has been coiled around it. The water then exits out the back of the hull.

Here's the inlet/water pick up at the jet unit/stator....





Then without being distracted by the generous amounts of IC-2000, hot glue and silicone... You can see the aluminum tube that is hot glued to the heat sinks, then water is transferred to the motor cooling coils, then exits the boat.






My boat now stays nice and cool compared to running it without the cooling. Motor hardly gets warm and the ESC just gets slightly warm.

My boat might look nasty on the inside but when running it, you never see taht part
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Old 05-19-2010, 11:38 PM
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So more questions. You replaced the stock jet drive. Why? Is the stock one junk or is it because you went with 540 size motor? I have a mamba and I think a 5500 sitting in the drawer could I just slap that right on the stock jet drive? I think I may order one this week to looks really cool.

Thanks for the info and a project that I did not need
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Old 05-20-2010, 02:22 AM
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WOW thank you , do you think it would be best to purchase a dedicated boat esc ??? rather than use a esc from one of my cars ,thanks for the pics and explanation very cool project
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Old 05-20-2010, 03:34 PM
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So more questions. You replaced the stock jet drive. Why? Is the stock one junk or is it because you went with 540 size motor? I have a mamba and I think a 5500 sitting in the drawer could I just slap that right on the stock jet drive? I think I may order one this week to looks really cool.

Thanks for the info and a project that I did not need

I only replaced the stock jet drive/motor because I got a smoking deal on the Graupner and the Velineon system. The Graupner unit is a much better quality and is slightly larger... about a mm or so.

The stock jet drive will take a 380/400 sized motor with a 2mm shaft IIRC.


Quote:
Originally Posted by yaleforscale View Post
WOW thank you , do you think it would be best to purchase a dedicated boat esc ??? rather than use a esc from one of my cars ,thanks for the pics and explanation very cool project

I almost went with a boat ESC and motor combo from Hobbyking but like I mentioned above, I got a great deal on the Traxxas combo and couldn't pass it up.
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Old 05-21-2010, 03:03 PM
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thanks again i have a brushless hobbywing system i could install in the boat the water cooling looks easy enough , but iam still a little confused as to what pumps the water round the system i take it that the jet drive does this ?? sorry but iam a noob when it comes to boats . i have seen on other forums guys installing windscreen whasher pumps from 1.1 scale trucks rigd up to a 12 volt batt .. not sure if this is needed i guess not ?? also what are your thoughts on these ducted fan jet boats junk or ??? thanks http://cgi.ebay.co.uk/RADIO-CONTROL-JET-BOAT-DUCTED-FAN-SPEEDBOAT-RED-/270579707555?cmd=ViewItem&pt=UK_ToysGames_RadioCon trolled_JN&hash=item3effceaea3

Last edited by yaleforscale : 05-21-2010 at 05:56 PM.
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Old 05-21-2010, 07:54 PM
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Yale nothing really pumps the water around. The pickup forces the water into the line and then as long as you are running the water flows threw the lines..
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Old 05-21-2010, 08:13 PM
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Quote:
Originally Posted by yaleforscale View Post
thanks again i have a brushless hobbywing system i could install in the boat the water cooling looks easy enough , but iam still a little confused as to what pumps the water round the system i take it that the jet drive does this ?? sorry but iam a noob when it comes to boats . i have seen on other forums guys installing windscreen whasher pumps from 1.1 scale trucks rigd up to a 12 volt batt .. not sure if this is needed i guess not ?? also what are your thoughts on these ducted fan jet boats junk or ??? thanks http://cgi.ebay.co.uk/RADIO-CONTROL-...item3effceaea3

Skip that boat.

To circulate the water through the system... As I apply throttle the jet drive forces water out the back end to propel it forward. As the water shoots out the back I have a small tube that scoops up just a small amount of that water. As that water is being picked up, it's forced through the lines by the pressure of the water coming out the jet drive unit.

A good example of this is.... turn on a water facet and put a fuel tube into part of the stream of water, that water being picked up will go through that line at the same speed as the facet is pushing water out..... Water coming out the facet is just like water coming out the jet drive unit.
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