HPR 010 Mono: Very Slow Build

[fweasel]

You could pinstripe the windshield frame with the thin 3mm tape, mask off the rest of the canopy, and spray the windshield on with gloss black paint. Pull the tape and you'll be left with a white window frame. Personally, I think the canopies look sleeker when the window wraps further down the sides and tapers off.

I did this one free hand with pinstripe tape on my Mini Zonda
2018-08-15 00.15.22.jpg

[boredom.is.me]

The white outline is nice. I wouldn't apply that to this build, but definitely something to consider for the next. That should be something on the darker side, maybe a very dark grey and either bright blue or yellow.
Your double white strip is pretty much what I'm thinking about doing with the fluorescent yellow: the offset, tear drop wrap around, except a single stripe.
I do agree with the windshield wrap too. I feel like this boat is just difficult to take pictures of. It's wrapped pretty far back, and the taper is a lot shallower than it looks.

[boredom.is.me]

Why replace the aluminum parts with plastic? Well, I lost the two aluminum bits around the shaft entrance. It would also be a pain to remake them if they ever stripped, which isn't unlikely.

I forgot to design the signal wire passage way on the ESC mount, so I had to cut those out. No biggie.

The ESC mounts are in. I'm going to leave them to set up a bit more today, then will go back with a little more adhesive just for a little extra strength.

I did move the ESC's forward a little to account for the fact that I may want to go with 4082 motors in the future. Each if these outrunners is 310 vs the 450 per 4082

[fweasel]

The ESC mounts are awesome. Were those resin printed?

[Alfa Spirit]

Mitoot-SUPPO outrunner motors are awesome, incredible quality/price ratio, good choice the magnets are very strong.

https://fr.aliexpress.com/item/1005002310751777.html?spm=a2g0o.store_pc_allProduct.8148356.2.61a8218a4DC8CS

[boredom.is.me]

The ESC mounts are awesome. Were those resin printed?

:D They are nylon SLS printed (powder) from shapeways.

Mitoot-SUPPO outrunner motors are awesome, incredible quality/price ratio, good choice the magnets are very strong.

https://fr.aliexpress.com/item/1005002310751777.html?spm=a2g0o.store_pc_allProduct.8148356.2.61a8218a4DC8CS

The smaller version of those is exactly what I have. I went with the 3730 because of the 1580kv. There isn't much sense in the slight jump to the 3736, even if they came in the right kv. The largest is the 3740. The issue again is kv. They are either 1180kv or 1760kv. My prop size maxes out at 50mm which shouldn't be an issue for the 1760kv, but that's a lot of rpm on 6s. Going 1180kv would require new speed controllers as well as I would then need to run 8s.



I change how I'll wire the shared capacitor bank. I wish I had 14awg, but the 16awg shouldn't be a problem. It's only there to even out the voltage between both sides. You could say, but what about ripple?" Each ESC has two smaller caps and two much larger caps. The bank uses seven 1000uf caps. I also decided to ditch the 90 degree connector and solder the wire straight.

Since we're talking about wiring... I got the OSE 8mm bullet connectors, the ones that look like giant XT60/90. They are just way too overkill to justify the force it takes to work with them. To get around losing the anti-spark, I can just hook an extra connector tot he balance lead of one of the batteries to the capacitor bank. If anything, it's still easier than having an extra wire on the battery and ESC.

I didn't realize how massive the larger water outlet was. It's a good thing I made sure to order larger hose.


EDIT: Forgot to add the motor chart...

[Alfa Spirit]

If the motors are too hot contact Herve from Mini-Meca he can make a nice water cooled motor mount using your support mounts https://www.mini-meca-rc.com/74-supports-moteurs

[boredom.is.me]

I'm actually not worried about heat at all, but I will keep that in mind.


I plugged in the spark suppressor and nothing blew up. It uses a 50ohm 10W resistor (AA for size comparison). It's major overkill, but it's the best option that I have on hand. I tucked it under the battery tray with double sided tape. It uses the balance connector on the battery to charge. I have a plug between the cap bank and the spark suppressor. I also made a little cover to the balance plug. Of course everything is sleeved silicone wires.

[boredom.is.me]

I'm going to place the water outlets further back as well. I'll ha e the water enter from the front of the front of the esc. The bends are just easier. This routing will also work fine if I were to use water cooling motors.

It doesn't matter how many boats you've built, drilling holes never gets easier...

[boredom.is.me]

I just wanted to enjoy my boat. I wasn't looking for a speed demon or anything. I recently moved back to the Virgin Islands (which is why everything is taking forever to get to me), and word got out. Now people want my head. With that said, I'm don't know if these "baby outrunners" are going to cut it. That raised the question in my head. What am I really getting by going with larger motors at similar kv ratings? Extra mass to spin larger props or the same props at less current. I comfortably max out at 50mm.

This is all hypothetical talk of course. I went out yesterday fir a maiden run, but had a small leak. I knew it was going to leak from where it did, but wasn't expecting as much as it did. Ill be getting what I need ti make proper seals on Tuesday. It will either have its second attempt on either Saturday or Sunday.

[Alfa Spirit]

I think that 2 x 8S batteries and 1100kV or 1200kV motors is a better setup for 1,10 meter mono.

[boredom.is.me]

I'm not against that, but it would require replacing pretty much everything. That is not an option.

[Alfa Spirit]

So you want to keep the Seaking esc and the 6S batteries?

[Jesse J]

Water pick up idea

Dang, gorgeous build and talk about planning!

In the event you don?t get sufficient water flow, as I have found with those through hull pickups, these are a good option. Sold on Ose store.
I suspect your set up will appreciate a good cooling.

Great work!!

[fweasel]

In the event you don?t get sufficient water flow, as I have found with those through hull pickups, these are a good option. Sold on Ose store.
I suspect your set up will appreciate a good cooling.

Yep, if you can't find them in the water cooling section, search for boat anchors in the scale model accessory section.