Saturday build - rescue boat

**Panther6834** · 06-04-2023, 02:12 AM

Once been planning doing a new rescue boat (actually, 'platform', as this isn't actually a "boat"), to replace what I've been using (a modified ProBoat Shockwave w/ dual-rudder), and this is similar to what I've been planning (since most use this design as their rescue platform). In terms of the basic platform, the general shapes are always the same. The biggest 'difference' is that some (like yourself) go with a single motor/prop, while others (as I'm considering) go with a dual motor/prop.

I'm curious about attaching the motor to the robot mount. Reason is, those robots servo mounts all seem to use 14mm spacing, yet most of these motors have 2 pair of holes - one at 16mm, the other at 19mm. I'm assuming you drilled new holes through the bracket. Can you show a photo of the modified bracket that the motor was attached to?

EDIT: Scratch that photo request. It's been a long few days, and brain is semi-dead. Just realized the 4th photo, of I zoomed in, shows what I was asking for...and, yup, I can see you drilled new holes.

~ More peace, love, laughter, & kindness would make the world a MUCH better place

**Bande1** · 06-04-2023, 06:13 AM

the motor came with a mount. I used the mount to mark new holes in the bracket. drilled the center hole out for the c-clip on the shaft of the motor.

I cant speak to how this works yet, but I can tell you this MOVES air. I can set it on the bare floor as is and it easily accelerates quite well. Watch the video link I barely give it throttle and it takes off the counter.

**srislash** · 06-04-2023, 07:41 AM

It should work well. Nice set up

**Panther6834** · 06-04-2023, 09:17 AM

Oh, I did watch the video...and, yeah, it does move. Of course, remember, there's no resistance. Put it on Easter, and you've just added resistance. But, I'm sure it'll still move plenty well enough. [emoji3]

Party of why I haven't built such a platform yet is, I'm uncertain of what dimensions to make it...not sure how long the side (front-to-rear) tubes should be, or how wide the platform needs to be (ie. how far apart the side rails need to be from each other). I'm guessing the lengths & width should be based on the longest boat, and the widest boat...but, how should said length & width correlate (ie. how much wider than the widest boat, and how much longer (or, is it supposed to be shorter?) than the shortest boat) between the platform, and the two boats in question?

~ More peace, love, laughter, & kindness would make the world a MUCH better place

**Bande1** · 06-04-2023, 10:20 AM

I just guessed. Kinda put it together on a whim based on what I had. 18" front and 9" rear of the motor mount. 20" wide. I put it off for a while too but it turned out to be super easy and fun. Granted I still haven't actually tried it yet.

**Panther6834** · 06-04-2023, 01:30 PM

I haven't started my design (which I'll do on the computer)...but, I do know mine will include raised cross bars front & rear (not just near the rear), so as to 'stabilize' the sides.

~ More peace, love, laughter, & kindness would make the world a MUCH better place

**Panther6834** · 06-04-2023, 09:34 PM

DISCLAIMER: I suck at CAD programs.

Ok, now that that's been said, I decided to finally lay out the groundwork for the rescue platform I was mentioning. This is what I came up with. Counting input the lengths of 1/2" PVC tubing, it consists of the following:

Four 2-4" lengths
Four 4-6" lengths
Eight 6" lengths
Two 12" lengths
Four 18" lengths

This would just be for the base. Anything additional, such as tubing to mount servos, motors, etc, are still to be figured out.

~ More peace, love, laughter, & kindness would make the world a MUCH better place

**Bande1** · 06-05-2023, 11:34 AM

Got her finished and took it to the little creek on my property for initial test. Did fine. Not blazing fast but whatever. I will say this needs reverse and a radio that can do at least +120 steering end points. 150 even better.

IMG_20230605_105914.jpg

I couldnt hold the camera and drive and the creek sits down 10ft so the video is pretty lame. but here it is going backward and forward briefly.

https://youtube.com/shorts/UARBgr27ntM?feature=share

**paulejr** · 06-06-2023, 11:13 AM

That's pretty cool. Left overs, who'd a thunk it ? when you figure out reverse, post again!

**Panther6834** · 06-06-2023, 12:04 PM

Originally posted by Bande1

I will say this needs reverse

What ESC are you using, as I'm guessing that's the 'problem'. If using an inexpensive non-user-programmable ESC that was made for plane/drone/helicopter use, reverse has (probably) been "locked out". In that case, you'd have to either use a different ESC, or just live without reverse.

~ More peace, love, laughter, & kindness would make the world a MUCH better place

**Bande1** · 06-06-2023, 12:13 PM

already fried the motor trying a 4s battery. doh. went fast though....for 30 seconds. tomorrow I have a 3536 4s capable motor coming. This one was just a tiny 2217.

I did not glue the motor shaft. Instead I made it removable for easier transport.

IMG_20230606_121635.jpg

again using whatever I had laying around I drilled a .065 hole for this large pin thats been in my misc garage drawer for years.

IMG_20230606_121707.jpg

**Panther6834** · 06-06-2023, 12:18 PM

Originally posted by Bande1

already fried the motor trying a 4s battery. doh. went fast though....for 30 seconds. tomorrow I have a 3536 4s capable motor coming. This one was just a tiny 2217.

It's no wonder. The '10S' rarely on that motor is BS. I'd say it's 3S max, 2S recommended.

I'm considering two 2204-1400kv, or 2830-1300kv, powered by dual 50A ESCs with reverse capability...but, still, non-user-programmable.

~ More peace, love, laughter, & kindness would make the world a MUCH better place

**Bande1** · 06-06-2023, 12:32 PM

Originally posted by Panther6834

It's no wonder. The '10S' rarely on that motor is BS. I'd say it's 3S max, 2S recommended.

I'm considering two 2204-1400kv, or 2830-1300kv, powered by dual 50A ESCs with reverse capability...but, still, non-user-programmable.

~ More peace, love, laughter, & kindness would make the world a MUCH better place

Im using this one. User programmable with reverse.

https://www.amazon.com/dp/B08C9XHMBX...roduct_details

online .pdf but really didnt need anything changed

https://img.banggood.com/file/products/20170112214632HTIRC%20Hornet%20Series%20ESC%20User%20Manual.pdf

the motor states its 3s max I just didnt bother to read the dang description. This new one should MOVE though so no worries. I highly advise against the kit I linked in the OP. Its lame, 3s max, not really a good deal, no reverse. Just buy the components individually.

**Panther6834** · 06-06-2023, 12:36 PM

That's exactly the same one I'll be getting. But, it's not user-programmable...clearly states that in product description, plus the seller indicates a such in answering a question asked by someone else. But, that's ok...doesn't need to be probably.

~ More peace, love, laughter, & kindness would make the world a MUCH better place

Saturday build - rescue boat

Saturday build - rescue boat

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