RE: Aquacraft Mini Rio  
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RE: Aquacraft Mini Rio - 7/4/2008 4:28:28 PM   
junior5150


 

Posts: 17
Joined: 1/30/2004
From: Grayson, GA, USA
Status: offline 		Nice video......

I really think that soldering the coil should help!

(in reply to Kmot)
       Post #: 426

RE: Aquacraft Mini Rio - 7/6/2008 5:12:22 AM   
Mauromj


 

Posts: 28
Joined: 7/29/2006
From: Spokane, WA, USA
Status: offline 		Ok, so if any of you want a little more speed, get a new prop. Today I went by my lhs and told him about my cavitation issues and he explained to me why this was occuring. To make a long story short, he gave me a little bigger prop made by Octura and that made a HUGE difference. This boat is so fast now. Also, the motor isnt getting any hotter which is a big plus. A water cooling jacket helped with the heat. Ill try and get a part number if I can find the package, it was only $2.80 to.

(in reply to Nina Roses Dad)
       Post #: 427

RE: Aquacraft Mini Rio - 7/7/2008 7:42:15 PM   
Nina Roses Dad


 

Posts: 125
Joined: 2/12/2008
From: San Francisco, CA, USA
Status: offline
quote:

ORIGINAL: Mauromj

Ok, so if any of you want a little more speed, get a new prop. Today I went by my lhs and told him about my cavitation issues and he explained to me why this was occuring. To make a long story short, he gave me a little bigger prop made by Octura and that made a HUGE difference. This boat is so fast now. Also, the motor isnt getting any hotter which is a big plus. A water cooling jacket helped with the heat. Ill try and get a part number if I can find the package, it was only $2.80 to.


Good info! Sounds like great value for the money. Must've been the x431 nylon prop (31mm)? The metal Octuras are +/-$10. I'm thinking that the added weight & inertia of a metal prop would be harder on a wire drive & more likely to snap it as they seem prone to do. I haven't done one yet, so it's just an edumucated guess.

I tried the 32mm Hammer plastic prop on my MR and the boat didn't get on plane at all. I assumed that I had overpropped, but it seems the larger but crappy plastic prop was just less efficient & giving less thrust. I'm going to try the x431 on my Hammer and Reef Racers as well.

< Message edited by Nina Roses Dad -- 7/8/2008 12:26:49 AM >

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       Post #: 428

RE: Aquacraft Mini Rio - 7/7/2008 7:49:00 PM   
Nina Roses Dad


 

Posts: 125
Joined: 2/12/2008
From: San Francisco, CA, USA
Status: offline 		Nice workmanship on the watercooling, Kmot!

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RE: Aquacraft Mini Rio - 7/8/2008 12:13:02 AM   
Kmot



Posts: 7740
Joined: 6/11/2003
From: Northridge, CA, USA
Status: offline 		Thank you NRD! I try!

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RE: Aquacraft Mini Rio - 7/8/2008 12:35:08 AM   
Nina Roses Dad


 

Posts: 125
Joined: 2/12/2008
From: San Francisco, CA, USA
Status: offline 		Now that I've seen Kmot's behind-the-prop water pickup vs. the stock one one the transom, I understand why the MR doesn't have the coil wrapped around the motor can like the Reef Racer (where it's behind the subsurface prop) - water won't flow through a coil in the MR because of the lower pressure & flow due to the transom mounted pickup. So, the little tube across the back of the motor is better than nothing. And JB Weld is surely better than the cable ties and bare metal on metal.

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RE: Aquacraft Mini Rio - 7/8/2008 2:56:08 AM   
Wheelnut



Posts: 4760
Joined: 10/25/2003
From: Annandale, VA, USA
Status: offline 		Don't under estimate a transom mount water pick up. They can do quite a good job. They do however add some drag.
I have added transom mounts to lots of my boats with good results.

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RE: Aquacraft Mini Rio - 7/8/2008 7:44:41 PM   
Mauromj


 

Posts: 28
Joined: 7/29/2006
From: Spokane, WA, USA
Status: offline 		Today im gonna stop by my lhs and pick up some .047 wire. Should I use a soldering gun or a little torch to remove the original flex cable?

(in reply to Wheelnut)
       Post #: 433

RE: Aquacraft Mini Rio - 7/8/2008 8:04:11 PM   
Basstronics


 

Posts: 170
Joined: 6/15/2008
From: Toledo, OH, USA
Status: offline 		Use a soldering iron. A torch will heat everything up quickly. You dont want to temper the piano wire.

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       Post #: 434

RE: Aquacraft Mini Rio - 7/8/2008 8:30:26 PM   
Quadchuck


 

Posts: 5
Joined: 7/8/2008
From: Spokane, WA, USA
Status: offline 		Boy, this little thing is aggravating me. I am new to boats but, give me a break. Mine won’t plane hardly at all unless I give it a push. Do I need to move the battery forward more? I already Velcroed it in. So I give it a good push, ok, a little toss, and the hatch flies off and it fills with water. My bad, I know. Turned it off real quick, the servo was tweaking all the way to one side. Hope its better when dry. I would like to know what prop might help. Thanks

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RE: Aquacraft Mini Rio - 7/8/2008 8:59:40 PM   
Nina Roses Dad


 

Posts: 125
Joined: 2/12/2008
From: San Francisco, CA, USA
Status: offline 		Allow the charger to top off the battery on trickle charge. That way you'll have more than just 1 of your 6 cells at a full charge and you'll have more power & runtime. Removing the left rudder helps.

Apparently, the extra millimeter of diameter of the Octura x431 prop will help and it costs > $3 if you can get it at your LHS.

Moving the battery forward will help with the rear weight bias, just be careful it doesn't rub on the coupler. I glued a piece of closed-cell foam on one side of my pack so that it pokes out through the forward part of the rear hatch hole. The hatch itself pushes down on the foam, cinches down on the battery, and keeps it from tilting and hitting the coupler.

The fact that the boat takes awhile to get on plane after you come to a stop or spin out makes it more of a challenge to drive and actually more fun once you get the hang of it and start racing against somebody else.


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RE: Aquacraft Mini Rio - 7/9/2008 1:09:00 AM   
Mauromj


 

Posts: 28
Joined: 7/29/2006
From: Spokane, WA, USA
Status: offline
quote:

ORIGINAL: Quadchuck

Boy, this little thing is aggravating me. I am new to boats but, give me a break. Mine won’t plane hardly at all unless I give it a push. Do I need to move the battery forward more? I already Velcroed it in. So I give it a good push, ok, a little toss, and the hatch flies off and it fills with water. My bad, I know. Turned it off real quick, the servo was tweaking all the way to one side. Hope its better when dry. I would like to know what prop might help. Thanks


Hey Quadchuck, did you pick up your Mini Rio at Performance? Thats were I got mine. I too had a problem with plaining untill I got that new Octura Prop. B&B carries them. I didnt think it would make a big difference but wow! This thing flies now! Hoping you can get all your problems fixed, just give it some time they are great little boats. Maybe we can go boatin some time. Later, Matt

(in reply to Quadchuck)
       Post #: 437

RE: Aquacraft Mini Rio - 7/9/2008 2:12:34 AM   
Kmot



Posts: 7740
Joined: 6/11/2003
From: Northridge, CA, USA
Status: offline 		You guys, the Mini Rio should get up on plane with no problem in completely stock form. I think as NRD said you need to be sure your battery is fully charged.

I made a set of turn fins for mine today. I was told it will help prevent it from wanting to roll over while making turns.

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RE: Aquacraft Mini Rio - 7/9/2008 2:37:59 AM   
Wheelnut



Posts: 4760
Joined: 10/25/2003
From: Annandale, VA, USA
Status: offline 		Kmot,
those turn fins will slow you down a bit, also they are more for helping to prevent spin outs. In the right situation, they will actually make the boat flip. Racers use one turn fin on one side for oval races. It will dig in and make it turn sharper. If there were a turn fin on the outside of the curve it will also dig in and cause flips.

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RE: Aquacraft Mini Rio - 7/9/2008 3:04:15 AM   
Kmot



Posts: 7740
Joined: 6/11/2003
From: Northridge, CA, USA
Status: offline 		Well I will just have to see what happens. I did this based on a recommendation from someone who had the same rollover problem and adding turn fins solved it they said.

As for dual fins, I have seen umpteen FE mono hull boats with dual turn fins on the stern, so I am not understanding your comment. I have only see hydros with a turn fin on one side and usually on the end of the sponson.

Someone has also just told me they need to be angled outward.

So, it's going to be trial and tweak for awhile.

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       Post #: 440

RE: Aquacraft Mini Rio - 7/9/2008 4:11:36 AM