BMoto Desktop Surfer - with Radio Control??

Roseand

Roseand

The Weaponizer
Site Supporter
Location
Wisconsin
JetFiend said:
If you widen the bottom deck, would that leave enough room for the much needed trim servo?
Click to expand...
dccabf0fc6700087a26db74fe857828d.jpg


Sent from my SM-G920V using Tapatalk
 
Balduccimoto

Balduccimoto

Location
NYC/Long Island
JetFiend said:
If you widen the bottom deck, would that leave enough room for the much needed trim servo?
Click to expand...

Probably not. The 20mm impeller dominates the vertical height of the bottom deck. It is massive in comparison to the hull - it's like shoving a 200mm pump in a Superjet. I really wouldn't want to add any vertical height because I have already added 20% and I feel like any more and it will look disproportional to the upper deck. It would be a nightmare to resize everything at this point, especially since I am maxing out the 10" vertical height of my 3D printer.

I am thinking that I should widen the bottom deck 5mm and make more aggressive tubbies, then see what the volume would be. Maybe that along with reducing some weight will take care of the flotation issue. The plan for today is to evaluate the percentage of mass each component attributes. It will help put everything into perspective.. The hood is a heavy piece right now at 60g (approximately 11% of the total 510g).

I also checked out other materials for the hull. I am currently using ABS plastic that has a density of 1.06g/cm^3.. So I am already using a relatively light weight material. I could make a lighter hull using composites, but there is some very complex geometry inside this hull that just can't be recreated with typical hand lay up.

and in good news .. the receiver dried out over night and came back to life. I will take a video later today.
 
SkiNick

SkiNick

#PelantPark
Location
Wisconsin
image.jpeg image.jpeg Here is my 2 js550s. One runs a full traxxas velinion esc and motor/survo. It is a prop drive. 3s gold serious venom lipo. It barrel rolls in Lake Michigan with easy. Close to landing them flat water.
 
Balduccimoto

Balduccimoto

Location
NYC/Long Island
Video! Pretty sure the reciever got wet again and so it died. It did the same thing last time and it worked after drying out. Pretty good for first water test. It has an aggressive intake so it definitely would rip if I let it run it's course. I let it go on a suicide mission with no hood yesterday and it zipped across the bath tub very quickly before nose diving because lack of flotation.

 
Last edited:
Balduccimoto

Balduccimoto

Location
NYC/Long Island
I started reducing the weight of some parts. I think what I want to do is waterproof the reciever and do a burn test in the tub, full throttle until the battery dies and see if it needs the water cooling. If I don't need it then I can surely reduce some weight getting rid of that stuff
 
Balduccimoto

Balduccimoto

Location
NYC/Long Island
orangefinger said:
this project is insane and one of the most interesting ones I have seen in a while....keep up the great work....I see myself racing and freestylen these in the future
Click to expand...

Thanks. Interesting fact: When I dreamed up this project, I went to an RC forum for guidance. I actually got flagged as spam because some thought the project was ridiculous. For the naysayers:

Note: the bottom deck isn't the best quality - there is some splits because I accidently printed with the wrong settings. It left alot of hollow sections that split when it cooled.

IMG_1833_zpsr6dbx0py.jpg
 
Balduccimoto

Balduccimoto

Location
NYC/Long Island
I pretty much tossed away everything from the original model. I'll put it this way: Might as well not even put this hull on a scale. I grafted the pump tunnel and moved it and the motor back 17mm. Center of gravity and buoyancy is theoretically perfect.
 
You must log in or register to reply here.
Top Bottom