Tech Spam thread - because 1/4" BSP gets 5 hand spans to the jiggawatt

[tortron]

@mlracing.co.nz

I wonder if there's some kind of jig I could get or make to have the cuts perfect though, excluding getting a giant lathe. 

 

Yes, I saw a jig from a wheel place come up for sale a year or two ago. It was just a grinder mounted to a stand and a hub welded to it, you could slide one half back or forward to align the disk on the rim

Not totally dissimilar to this

 

[440bbm]

On 24/08/2024 at 14:19, Early jap nuter said:

Yeah the Ali starts to froth white stuff out of it then fall apart. Anzor  has a sealer that’s slows down the reaction but won’t stop it. 

Tef-gel.

this stuff is the shit. we used it heaps on the sub and marine stuff. it will be fine for your application. unless you have current/earthing or in salt water the chances of any corrosion you see over the number of years the item that this is used on, that is on your ownership will be minimal.

 

[mlracing.co.nz]

16 hours ago, tortron said:

@mlracing.co.nz

 

 

 

Yes, I saw a jig from a wheel place come up for sale a year or two ago. It was just a grinder mounted to a stand and a hub welded to it, you could slide one half back or forward to align the disk on the rim

Not totally dissimilar to this

 

yeah this kind of thing would be perfect, just need someone else to have already made it so I can buy it haha

[GARDRB]

6 hours ago, 440bbm said:

Tef-gel.

Looks great, I might get a tube and give it a thrash

 

[GARDRB]

6 hours ago, 440bbm said:

used it heaps on the sub

Sorry what? You worked on submarines?

[440bbm]

Just now, GARDRB said:

Sorry what? You worked on submarines?

lol little bit.  made some stuffs. 

not going to get into the one that sank though, id hate to do that again bahahaha

[cubastreet]

you'd have trouble getting into it now anyway.

 

[440bbm]

I probably shouldn't be so crass. Some very unfortunate idiots trusted Stocktons crazy way too much and ultimately paid more than the high price of 250k each and their lives. 

*disclaimer. i had nothing to do with that one. But i bet the fella that sold them the logitech game controller they used to pilot the sub with feels some sort of responsibility for not upselling to the top line model LOL

[GARDRB]

20 hours ago, 440bbm said:

I probably shouldn't be so crass. Some very unfortunate idiots trusted Stocktons crazy way too much and ultimately paid more than the high price of 250k each and their lives. 

*disclaimer. i had nothing to do with that one. But i bet the fella that sold them the logitech game controller they used to pilot the sub with feels some sort of responsibility for not upselling to the top line model LOL

Surely EB Games offers a decent warranty?

[440bbm]

certainly puts a different spin on a 'lifetime warranty'.

[igor]

Perhaps a downward spiral of sorts.

[h4nd]

Oh, that's why my dev PC has been completely sucking lately.

Someone diddle fingered the paging files settings

[ThePog]

If I were to find a high pressure, low flow 24v air pump on the cheap would I find it in the form of a truck AC compressor or the like?

I am talking up to 2000psi or some decent fraction of that sort of pressure..

[NickJ]

AC is in the 10-15 Bar range.

2000 psi in a gas is multistage/intensifier realm cos big ratios = heat

I'm assuming a bottle of Nitrogen is not on the possible list?

[smokin'joe]

speaking of air pumps and volumes.

did i see correctly that RRover  (maybe HSE) have a decent onboard compressor for the air-bag suspension ?

[ThePog]

47 minutes ago, NickJ said:

AC is in the 10-15 Bar range.

2000 psi in a gas is multistage/intensifier realm cos big ratios = heat

I'm assuming a bottle of Nitrogen is not on the possible list?

It is to make an air battery, basically use the excess solar I generate to pump air into a large tank. Heat shouldn't be too much of an issue as I wouldnt think it would be fast.

But a slow high pressure pump is key, I am just not sure what that is.

[NickJ]

Huh, whataya know

https://www.aliexpress.com/item/1005005656660737.html?src=google&src=google&albch=shopping&acnt=298-731-3000&isdl=y&slnk=&plac=&mtctp=&albbt=Google_7_shopping&aff_platform=google&aff_short_key=UneMJZVf&gclsrc=aw.ds&&albagn=888888&&ds_e_adid=&ds_e_matchtype=&ds_e_device=c&ds_e_network=x&ds_e_product_group_id=&ds_e_product_id=en1005005656660737&ds_e_product_merchant_id=107909068&ds_e_product_country=NZ&ds_e_product_language=en&ds_e_product_channel=online&ds_e_product_store_id=&ds_url_v=2&albcp=21627925371&albag=&isSmbAutoCall=false&needSmbHouyi=false&gad_source=1&gclid=Cj0KCQjw28W2BhC7ARIsAPerrcI0iD6plyrXf24PNSaCYihuLt6ZhWuAfuseM0qstKBnvccOpiAyty8aAruGEALw_wcB

 

[mjrstar]

This sounds like hydraulic pump territory,  could you build an air over hydraulic accumilator? You can get those small electric hydraulic power packs for for tip trucks.

https://www.trademe.co.nz/a/marketplace/business-farming-industry/industrial/manufacturing-metalwork/presses/listing/4882715028?gad_source=1&gclid=Cj0KCQjw28W2BhC7ARIsAPerrcIMiHNr_QSqPY1er47r1FndRmEZdvxdIDYAL9apDYEBo7Vi_T82ZTwaArwPEALw_wcB&gclsrc=aw.ds

[ThePog]

43 minutes ago, NickJ said:

Huh, whataya know

https://www.aliexpress.com/item/1005005656660737.html?src=google&src=google&albch=shopping&acnt=298-731-3000&isdl=y&slnk=&plac=&mtctp=&albbt=Google_7_shopping&aff_platform=google&aff_short_key=UneMJZVf&gclsrc=aw.ds&&albagn=888888&&ds_e_adid=&ds_e_matchtype=&ds_e_device=c&ds_e_network=x&ds_e_product_group_id=&ds_e_product_id=en1005005656660737&ds_e_product_merchant_id=107909068&ds_e_product_country=NZ&ds_e_product_language=en&ds_e_product_channel=online&ds_e_product_store_id=&ds_url_v=2&albcp=21627925371&albag=&isSmbAutoCall=false&needSmbHouyi=false&gad_source=1&gclid=Cj0KCQjw28W2BhC7ARIsAPerrcI0iD6plyrXf24PNSaCYihuLt6ZhWuAfuseM0qstKBnvccOpiAyty8aAruGEALw_wcB

 

Yea I did the obligatory AliX search and saw that. A strong possibility.

 

17 minutes ago, mjrstar said:

This sounds like hydraulic pump territory,  could you build an air over hydraulic accumilator? You can get those small electric hydraulic power packs for for tip trucks.

https://www.trademe.co.nz/a/marketplace/business-farming-industry/industrial/manufacturing-metalwork/presses/listing/4882715028?gad_source=1&gclid=Cj0KCQjw28W2BhC7ARIsAPerrcIMiHNr_QSqPY1er47r1FndRmEZdvxdIDYAL9apDYEBo7Vi_T82ZTwaArwPEALw_wcB&gclsrc=aw.ds

 

I shall have to investigate this. I have no idea how an air over hydraulic accumulator works..

Edit; on some cursory googling I am not sure that has the capacity I am after. The key is to have a lot of air at a lot of pressure so getting something like 600watts out of a generator for a day or so.

I did a basic spreadsheet and its a lot of air.

[NickJ]

43 minutes ago, ThePog said:

Yea I did the obligatory AliX search and saw that. A strong possibility.

 

 

I shall have to investigate this. I have no idea how an air over hydraulic accumulator works..

Edit; on some cursory googling I am not sure that has the capacity I am after. The key is to have a lot of air at a lot of pressure so getting something like 600watts out of a generator for a day or so.

I did a basic spreadsheet and its a lot of air.

Mean, keen to see how you get on, my brain is poisoned with having worked with commercial high pressure systems and knowing how complicated they need to be.