New Member

[lozzzzzz]

Jamesrl, I pulled an edge out to give as much area as possible really, it would be messy but less likely to burn holes in the metal than if it was just welding an edge to an edge.  I was thinking of cutting the barrel a bit above the joint really, but hadn't fully made up my mind yet.  Good point with the sealer though, I'll defo not do it there

Julian, I'd be happy to do whatever you like really I wasn't expecting there to be interest in another project thread as I imagine you've all done it, it would be cool to have a part in the wiki, you might need to correct some things though.  I'm so familiar with the car project now, but I'm a real beginner with this!  On that note I'm not even sure how the BSP pipe nomenclature works!

Dick, is 3/4 BSP the internal diameter making it about 1" OD?  As you can see I'm still a little unsure about this but might have a better idea what I need when the pump arrives.  Thanks again for the offer. 

Thanks for the car comments, its so much fun, making and driving   Back on the road soon too

[Julian]

It looks like your drum is a clip-top.  Isn't the seal for those in the lid?  If so there shouldn't be an issue welding to the roll on the open end.

We're always interested in new builds.  If I can ever find a cheap plasma cutter I'm ready embark on one myself, but it's as much to make the wiki more complete for the benefit of new comers than anything else.

Don't worry about editing the wiki, it's really not that difficult and quite enjoyable once you get going.  You'll get loads of help if you post up a problem on the forum and I'm more than happy to start the page off for you.

I've just given you wiki editing rights so you can have a play if you wish.  There's quite a lot of info on getting started both on here and the wiki.

[Rotary-Motion]

hi lolzzzzzzz

I live in bromyard  but I don't make bio, just a veg runner...

if you like car project threads check out me van thread on here

[Rotary-Motion]

http://www.biopowered.co.uk/forum/index.php/topic,748.0.html

[lozzzzzz]

Julian, thanks for that I will have a go at some point, I can't promise when but I'll certainly document and put it up there at some point.  I've got work to do now but came back on as I forgot to comment on therecklessengineers Scimitar comment. 
 
I couldn't agree more about the shape, that's the main attraction for me, that and the lack of this rusty body panels

They are deceptively heavy though, not a great start for a small EV, unless you're going crazy with a short lived drag racer with ridiculously high voltage in which case its a great starting point with a very strong axle.

Oh, Rotary, you're very close then, I wonder if we've met?  That's a fantastic project, the work looks really well thought out and well made.  Have you seen (heard) the Scimitar about town?

[Rotary-Motion]

Julian, thanks for that I will have a go at some point, I can't promise when but I'll certainly document and put it up there at some point.  I've got work to do now but came back on as I forgot to comment on therecklessengineers Scimitar comment. 
 
I couldn't agree more about the shape, that's the main attraction for me, that and the lack of this rusty body panels

They are deceptively heavy though, not a great start for a small EV, unless you're going crazy with a short lived drag racer with ridiculously high voltage in which case its a great starting point with a very strong axle.

Oh, Rotary, you're very close then, I wonder if we've met?  That's a fantastic project, the work looks really well thought out and well made.  Have you seen (heard) the Scimitar about town?

no don't think so? although I tend to switch off a lot ask anyone here, and go off on one to another world

[Dickjotec]

Lozzzz

 3/4 is the ID of the pipe. The OD is just over an inch. Post the make and model of the pump for the pumpophiles to advise on pipe sizes but at 300LPM I would have thought 1 1/4 would be a better size than 3/4 but have a look at valve sizes available before choosing. You could make the mixing line a bigger size with the drain etc at 3/4.
James is the authority on Venturi and eductor  design for specific pump rates, though with that flow rate an eductor would be overkill.

[Jamesrl]

James is the authority on Venturi and eductor  design for specific pump rates, though with that flow rate an eductor would be overkill.

Overkill? Never, you can't have too much agitation, I've built venturis and eductors for pumps upto 1000ltr/min at 3bar, mind you they were mixing between 2,500 and 10,000ltr batches.

[greasemonkey]

Having read the first eight pages of your car build, and having my mind thoroughly melted, I can safely say you will have no problem building a bio processor.
I'll read the rest when I recover........

[kamaangir]

Hello and welcome!

That is a cracking motor you have there, you will have no trouble building anything bio related.

[lozzzzzz]

I'm going to keep an eye out for the Green van Rotary

Dick, Agreed, I might have to go bigger then.  I've kept your advice in mind, that after a while the exciting edge will be lost a bit so it would be beneficial to make the thing as big as possible hence the silly pump. 

The pump is a Lowara CEA210/4/A-V  As seen here:
http://www.ebay.co.uk/itm/141226697341?ssPageName=STRK:MEWNX:IT&_trksid=p3984.m1497.l2649

The data sheet can be seen here:
http://www.lowara.com/518F61A1-8469-4935-A8EA-95CB7C59C924/FinalDownload/DownloadId-B7364E281089C6EE7C2E46D69C30A43A/518F61A1-8469-4935-A8EA-95CB7C59C924/lowdata/doc/EN/ceaca-td-en.pdf

I'm looking forward to having a go at making the venturi.  I'm hoping this will be do-able on the lathe from an aluminium bar. 

James, its a relief to hear you say that, I was worried the pump might be to big for a 160l (ish) reactor. 

Thanks for your comments Greasemonkey and Kamaangir.  Glad you're enjoying the read

[Rotary-Motion]

K.H here runs a big pump not sure on size but his pipe work is 2 inch I believe... quite a machine...

[Dickjotec]

Lozzzz
Aluminium is a no no due to reaction with e meth unless you use it for the former when casting the Venturi.

[lozzzzzz]

Right, back to the drawing board on that one then  

[Julian]

Lozzzz
Aluminium is a no no due to reaction with e meth unless you use it for the former when casting the Venturi.

I looked into the reaction between methanol and aluminium.  Although there is a reaction, it would appear that it's only with the oxidised layer ... so only a few molecules thick.  Consensus (which included a PhD in chemistry) was that it would most likely take years to do any significant damage.

However, it will get seriously attacked by the catalyst.  Whilst in my teens I tried degreasing a clutch with NaOH in an aluminium bucket ... the bucket lost, big time.