Merged LiFeYPO4 1000Ah Winston prismatic cells and all electric galley...

[s/v Jedi]

Originally Posted by newhaul

Never said sold as or purchased as .

I just asked for clarification as I stated many people are not smart enough to call a bolt by its real size they call it by the size of wrench it takes to tighten or listen it .

I am a retired shipwright and mechanic I do know the difference just making sure we all here are on the same page.

Well, I never heard nor read of anybody sizing bolts like you describe, so I googled it. According to this table https://www.boltdepot.com/fastener-i...head-size.aspx
a 14mm bolt needs either a 19mm, 21mm or 22mm wrench depending on the bolt being ANSI, DIN or JIS. Unfortunately, M12 as well as M16 bolts have heads in the same sizes as well so measuring wrench size is useless for metric.

[CaptainRivet]

Originally Posted by s/v Jedi

Well, I never heard nor read of anybody sizing bolts like you describe, so I googled it. According to this table https://www.boltdepot.com/fastener-i...head-size.aspx
a 14mm bolt needs either a 19mm, 21mm or 22mm wrench depending on the bolt being ANSI, DIN or JIS. Unfortunately, M12 as well as M16 bolts have heads in the same sizes as well so measuring wrench size is useless for metric.

Where do you see in the table M12 and 16 has the same head?
A screw has a set of parameters and just different per profession and country what to use, most common and widely used is name it by the thread size and which measuring system to use eg M12 metric thread size 12mm which actually doesn't mean the screws diameter, it is actually the hole you drill so the screw passes through the diameter of an M12 screw is 11,9mm

And others name it by the wrench size needed, eg workers that do classic assembly or disassembly where it just matters what tool size you need to get it apart. But all mean the same

[hzcruiser]

Yes, that would be odd, Jedi, if M12 and M16 had the same head size. Since you're usually quite well informed I checked whether maybe it's the case with hex cap screws but no, they use 10 and 14mm allen keys respectively.

https://www.insight-security.com/get...ric-bolt-sizes

[s/v Jedi]

Originally Posted by CaptainRivet

Where do you see in the table M12 and 16 has the same head?
A screw has a set of parameters and just different per profession and country what to use, most common and widely used is name it by the thread size and which measuring system to use eg M12 metric thread size 12mm which actually doesn't mean the screws diameter, it is actually the hole you drill so the screw passes through the diameter of an M12 screw is 11,9mm

And others name it by the wrench size needed, eg workers that do classic assembly or disassembly where it just matters what tool size you need to get it apart. But all mean the same

Originally Posted by hzcruiser

Yes, that would be odd, Jedi, if M12 and M16 had the same head size. Since you're usually quite well informed I checked whether maybe it's the case with hex cap screws but no, they use 10 and 14mm allen keys respectively.

https://www.insight-security.com/get...ric-bolt-sizes

I guess you guys are not looking at the table I linked to. I screenshotted it and attached to this post.

It shows a DIN M12 bolt has a 19mm head just like a JIS M14 bolt and a JIS M16 bolt has a 22mm head just like a DIN M14 bolt.
Then there is the DIN heavy hex M12 bolt which has a 22mm head just like a DIN M14 as well as JIS M16 and lastly an ISO heavy hex M12 has a 21mm head just like an ANSI/ISO M14 bolt.

So, there it is

[newhaul]

Originally Posted by s/v Jedi

I guess you guys are not looking at the table I linked to. I screenshotted it and attached to this post.

It shows a DIN M12 bolt has a 19mm head just like a JIS M14 bolt and a JIS M16 bolt has a 22mm head just like a DIN M14 bolt.
Then there is the DIN heavy hex M12 bolt which has a 22mm head just like a DIN M14 as well as JIS M16 and lastly an ISO heavy hex M12 has a 21mm head just like an ANSI/ISO M14 bolt.

So, there it is

Dang I didn't think asking just to be sure we all were talking bolt shaft diameter and not wrench size for a bolt would lead to 3 pages .

Jedi the reason a DIN m12 and a JIS m14 have the same size for wrench is they are 2 unrelated standards for manufacture and use of said bolts . DIN is a European/ German standard JIS is a Japanese standard. The last the ANSI/ ISO is the American standard for bolts. So it appears a standard is not really a standard .

[s/v Jedi]

Originally Posted by newhaul

Dang I didn't think asking just to be sure we all were talking bolt shaft diameter and not wrench size for a bolt would lead to 3 pages .

Jedi the reason a DIN m12 and a JIS m14 have the same size for wrench is they are 2 unrelated standards for manufacture and use of said bolts . DIN is a European/ German standard JIS is a Japanese standard. The last the ANSI/ ISO is the American standard for bolts. So it appears a standard is not really a standard .

Well exactly, so this demonstrates that you can NOT determine bolt diameter by the wrench size, which is what I’m trying to explain all this time, while you say this is normal and almost everybody uses wrench size instead of bolt diameter.

It is completely normal to encounter M12 bolts from different standards, for example a European boat with a Japanese Yanmar engine. You need to measure bolt diameter instead of trying which wrench fits

[newhaul]

Originally Posted by s/v Jedi

Well exactly, so this demonstrates that you can NOT determine bolt diameter by the wrench size, which is what I’m trying to explain all this time, while you say this is normal and almost everybody uses wrench size instead of bolt diameter.
:

That is exactly what I was ensuring we were all talking shank diameter and nothing else . I have dealings with so many idiots just had to be sure on the specifics wrt this project.

Come to America and ask a mechanic for a 12 mm bolt for your yanmar you may not get what you want.

[CaptainRivet]

Originally Posted by s/v Jedi

Well exactly, so this demonstrates that you can NOT determine bolt diameter by the wrench size, which is what I’m trying to explain all this time, while you say this is normal and almost everybody uses wrench size instead of bolt diameter.

It is completely normal to encounter M12 bolts from different standards, for example a European boat with a Japanese Yanmar engine. You need to measure bolt diameter instead of trying which wrench fits

Yanmar using JIS standard screws?
Yes you won, it's totally normal that a American assembly company assembles a European machine in Japan and forgot the screws so they need to source0.... Only then you get into trouble having this issues.

[Simi 60]

Originally Posted by newhaul

That is exactly what I was ensuring we were all talking shank diameter and nothing else . I have dealings with so many idiots just had to be sure on the specifics wrt this project.

Come to America and ask a mechanic for a 12 mm bolt for your yanmar you may not get what you want.

That's an America problem not a bolt problem

[CatNewBee]

Wohoo, a lot of discussions in my old thread... [emoji6][emoji2772]

So some news from me.

Built a wireless double shunt monitor

ESP32 + 2x INA226 + 2x 300A/75mV shunt + OLED display and 12V/3.3V power supply.

It measures and aggregates the values, connects via WLAN to the router or directly to theAP of the VENUS, transmits all data via UDP. Venus reads and displays the data and sends it to VRM for statistics...

[newhaul]

Originally Posted by CatNewBee

Wohoo, a lot of discussions in my old thread... [emoji6][emoji2772]

So some news from me.

Built a wireless double shunt monitor

ESP32 + 2x INA226 + 2x 300A/75mV shunt + OLED display and 12V/3.3V power supply.

It measures and aggregates the values, connects via WLAN to the router or directly to theAP of the VENUS, transmits all data via UDP. Venus reads and displays the data and sends it to VRM for statistics...Attachment 261130Attachment 261131Attachment 261132Attachment 261133Attachment 261134Attachment 261135

Looking really nice thanks for the update.

[hzcruiser]

Originally Posted by s/v Jedi

Well exactly, so this demonstrates that you can NOT determine bolt diameter by the wrench size, which is what I’m trying to explain all this time, while you say this is normal and almost everybody uses wrench size instead of bolt diameter.

It is completely normal to encounter M12 bolts from different standards, for example a European boat with a Japanese Yanmar engine. You need to measure bolt diameter instead of trying which wrench fits

I got what you mean now. And yes, if those "standards" meet on international machinery, it would lead to confusion. And I would also call a bolt by the shaft diameter, not the head.

[Catapault]

Originally Posted by newhaul

Ok so it took a 19 mm wrench ? Just looking for clarification.
A 14mm diameter bolt should take a 19mm wrench unless a special setup bolt .

Mine are 8mm and required a 12mm socket to tighten .

Most people i run into use the wrench size in reference to the bolt size .

Using wrench size to work out which one is required is about the most useless thing I could think of when specifying size of a bolt, screw, or any fastner really.

No engineer, mechanic, technician I know of would use anything other than the relevant dimension of the fastner. (And they actually have multiple dimensions, but diameter of the thread is the most common place to start)

[Catapault]

Originally Posted by CatNewBee

Wohoo, a lot of discussions in my old thread... [emoji6][emoji2772]

So some news from me.

Built a wireless double shunt monitor

ESP32 + 2x INA226 + 2x 300A/75mV shunt + OLED display and 12V/3.3V power supply.

It measures and aggregates the values, connects via WLAN to the router or directly to theAP of the VENUS, transmits all data via UDP. Venus reads and displays the data and sends it to VRM for statistics...Attachment 261130Attachment 261131Attachment 261132Attachment 261133Attachment 261134Attachment 261135

Nice Job !!.

Where in the circuit are the new shunts loctated ? The photo seems to show one between two of the RBS's ?

Did this replace your 1000A Victoron Shunt, or doing a different Job ?

[Catapault]

Originally Posted by s/v Jedi

The largest ones I could buy were 1/2” which is 1.3mm smaller diameter, so I drilled them out. Warning: that is not so easy as it sounds, the 14mm drill (I used a step drill) will catch and ruin the terminal, possibly hurting you in the process. You can use a Dremel with grinding or sanding bit as well.

(I used a drill press and made a jig to hold the terminal)

I use 10AWG wiring to enable inline charging of individual cells as well as cell monitoring.

How long did it take you to Top Balance the new 400AH winstons ?

I've been running for 2 days now, at 3.55v on the PSU. Current started at 4.250 A, down to 4.080 A now. Cell voltage is only up to 3.320v so far, and climbing at glacial pace. (0.001mv. every 4 hours or so). (Note: Cell voltages being measure with a calibrated Fluke Multimeter at the terminals.)

I appreciate its 1600AH of bank atm, (4 cells wired in paralell), but expected a bit faster movement of the Cell voltage over the time period, so wanted to check others experience with same cells.