DOA Neptune SB1 Tiger Thunder Seawolf - need some help

[TuptubBuilder]

I rebuilt a damaged Neptune that I purchased from Drydocks in the spring of 2023. I published a refit document that includes a pump and its source. I used 3D printed parts and a smaller ESC to fit it in. You might find it useful.

https://forum.rc-sub.com/forum/builder-threads/172235-refurbished-neptune

[tifosi12]

Thanks everybody for the great hints. I'll study them all.

[tifosi12]

I rebuilt a damaged Neptune that I purchased from Drydocks in the spring of 2023. I published a refit document that includes a pump and its source. I used 3D printed parts and a smaller ESC to fit it in. You might find it useful.

https://forum.rc-sub.com/forum/build...bished-neptune

Actually I came across your rebuild thread before I started this one and had already downloaded your PDF. If you could share your source for the new pump, that would be helpful and any of the STL files you created and are willing to pass on (especially what's required to fix/mount the pump). Thanks.

[tifosi12]

Upon further inspection I'm pretty sure now that my pump is not working, zero movement of the bag. So I'll have to disassemble the boat. Daunting.

How do I best open those water/air supply lines for the pump and the bag? Are these white connectors disposable? Should I replace them?

[TuptubBuilder]

The Pump is from Amazon. it's pricier that Subculture's sugjestions: https://www.amazon.com/gp/product/B0...?ie=UTF8&psc=1.
I need some time to dig up the stls.

[TuptubBuilder]

Actually I came across your rebuild thread before I started this one and had already downloaded your PDF. If you could share your source for the new pump, that would be helpful and any of the STL files you created and are willing to pass on (especially what's required to fix/mount the pump). Thanks.

neptune.pdf, nep

[tifosi12]

The Pump is from Amazon. it's pricier that Subculture's sugjestions: https://www.amazon.com/gp/product/B0...?ie=UTF8&psc=1.
I need some time to dig up the stls.

Awesome, thanks. Also greatly appreciate the STLs. That'l work just nicely. Much appreciated.

[tifosi12]

The Pump is from Amazon. it's pricier that Subculture's sugjestions: https://www.amazon.com/gp/product/B0...?ie=UTF8&psc=1.
I need some time to dig up the stls.

Ordered and currently printing your STLs. Thanks!

BTW: We have the same printer and use the same PLA.

[TuptubBuilder]

Ordered and currently printing your STLs. Thanks!

BTW: We have the same printer and use the same PLA.

Great, hope to see a build post.

[tifosi12]

Great, hope to see a build post.

Well, for starters the 3D print warped. Hasn't done that in many months. I wonder whether it's the new PLA? Will try again.

Your instructions are very well done. You could sell your whole package (pump, STL files as print outs and instructions) as an upgrade kit to Neptune users. And make like...ten bucks. :)

Seriously, thanks for all the help.

[tifosi12]

Great, hope to see a build post.

I managed to disassemble the boat, remove the old pump and got the new one ready. But I'm struggling following your directions on how to install the new pump. If you have any pictures of the pump as it sits in your boat that would be helpful. I don't know which direction it is facing etc. Trying to mount it vertically but there's not enough room as it bumps against the board of the servo connectors.

[Das Boot]

You can always relocate the board. It doesn’t have to stay at that spot.

[tifosi12]

You can always relocate the board. It doesn’t have to stay at that spot.

I get that although cable lengths are somewhat determining where stuff goes.

I'm reluctant to make too many changes as it affects the weight distribution. Everything feels like brain surgery with this boat, it is so complex.

[Das Boot]

Cut the wires, move the board down a little bit where it doesn’t interfere anymore, and solder the wire back up with wire splice, and heat shrink around each solder joint. Moving that ounce of weight is not gonna matter. Do you have a soldering iron?

[tifosi12]

Do you have a soldering iron?

Yes and in 40 years of using it I have never become good at it. My soldering sucks but I'm using the melting connectors Rob once brought up. They do help a lot.