Search found 22 matches

by brad_m
Thu Sep 01, 2016 6:55 am
Forum: Metal Cutting
Topic: New, Old cold saw
Replies: 5
Views: 1356

Re: New, Old cold saw

Nice find Yeah, I'm happy with it. 1/5th the cost of a new one. I do need to spend some time putting some indexing marks on the vise and none of the original marking are there. and the coolant pump is a mix of bits. Someone at some stage couldn't find a mechanical coolant pump, so they made a try t...
by brad_m
Wed Aug 31, 2016 7:50 am
Forum: Metal Cutting
Topic: New, Old cold saw
Replies: 5
Views: 1356

New, Old cold saw

Just picked up this old saw at an auction. It was still in use in a large construction business. So far I've cleaned it down and sprayed it with CRC 5.56 and run a few cuts through some scrap. My question, what do you all use for coolant? is basic soluble oil the best choice? Will be cutting mild an...
by brad_m
Sat Aug 20, 2016 3:20 am
Forum: Welding Projects - Welding project Ideas - Welding project plans
Topic: Racecar exhaust
Replies: 17
Views: 3232

Re: Racecar exhaust

MosquitoMoto wrote:Well done Brad.

What track are you running on? 46 second lap...that's a short circuit!




Kym
It's actually a Go Kart track that we run sprints on.


https://www.youtube.com/watch?v=Ibno2c0B7Qo
by brad_m
Mon Aug 15, 2016 4:38 am
Forum: Welding Projects - Welding project Ideas - Welding project plans
Topic: Racecar exhaust
Replies: 17
Views: 3232

Re: Racecar exhaust

Finished, on the car the have been proven on the race track.
Worth 0.5 seconds on 46 second lap.
by brad_m
Sun Jul 17, 2016 1:42 am
Forum: Welding Projects - Welding project Ideas - Welding project plans
Topic: Racecar exhaust
Replies: 17
Views: 3232

Re: Racecar exhaust

Just uploading another photo.

Need more practice, but then again, that's partly what this is about.
by brad_m
Mon Jul 11, 2016 8:32 am
Forum: Welding Projects - Welding project Ideas - Welding project plans
Topic: Racecar exhaust
Replies: 17
Views: 3232

Re: Racecar exhaust

one more thing. if you have 2inches of fill rod in your fingers and you want to wipe the sweat off your face, PUT THE FILL DOWN FIRST.

Accidentally sticking the hot end of a fill rod up your nose is NOT a pleasant experience.
by brad_m
Mon Jul 11, 2016 8:29 am
Forum: Welding Projects - Welding project Ideas - Welding project plans
Topic: Racecar exhaust
Replies: 17
Views: 3232

Re: Racecar exhaust

Small amount of progress tonight. number 2 tube is a little longer after the step than the other three, but the step is in the right place, collector is in the right place and there are as few bends in each pipe as I could get. Getting those three thing right is worth more than a 15mm of length diff...
by brad_m
Wed Jul 06, 2016 6:56 am
Forum: Welding Projects - Welding project Ideas - Welding project plans
Topic: Racecar exhaust
Replies: 17
Views: 3232

Re: Racecar exhaust

After pulling it all apart, I have made some progress.
by brad_m
Mon Jun 27, 2016 8:26 am
Forum: Welding Projects - Welding project Ideas - Welding project plans
Topic: Racecar exhaust
Replies: 17
Views: 3232

Re: Racecar exhaust

cut all the tacks off today.

changed the primary pipe diameter and the layout.
One of my suppliers has come good with some 15 degree bends so I can make the merge collectors.
I guess that called progress.
by brad_m
Mon Jun 27, 2016 8:23 am
Forum: Tig Welding - Tig Welding Aluminum - Tig Welding Techniques - Aluminum Tig Welding
Topic: The what I welded today (/whenever) thread (pics please)
Replies: 3253
Views: 539307

Re: The what I welded today (/whenever) thread (pics please)

VooDoo wrote:Otherside header tacked up Image
Can I ask why you put a step like that just after the port?
by brad_m
Sat Jun 25, 2016 6:58 pm
Forum: Welding Projects - Welding project Ideas - Welding project plans
Topic: Racecar exhaust
Replies: 17
Views: 3232

Re: Racecar exhaust

Starting to look nice! For the ports being too big, instead of filling them in, you could also have looked at getting some slightly bigger diameter starting pipe pieces/stubs that would have fitted into the holes and then slightly tapered them so your final diameter primaries fit in/onto these. For...
by brad_m
Sat Jun 25, 2016 6:31 am
Forum: Welding Projects - Welding project Ideas - Welding project plans
Topic: Racecar exhaust
Replies: 17
Views: 3232

Re: Racecar exhaust

They were the only place I could get one. It's a problem in Australia, we just don't have a lot options for many things. I've had to compromise on the pipe size too, There is no one here that stocks mendrel bent tube in anything bigger than a 1.5xDia bend center-line radius. It's all "custom&qu...
by brad_m
Sat Jun 25, 2016 6:26 am
Forum: Tig Welding - Tig Welding Aluminum - Tig Welding Techniques - Aluminum Tig Welding
Topic: The what I welded today (/whenever) thread (pics please)
Replies: 3253
Views: 539307

Re: The what I welded today (/whenever) thread (pics please)

Bsmith wrote:
brad_m wrote:What I tacked up today.

What engine is that? Turbo?
It's a Toyota 3SGE No turbo. I race an MR2 in a local series.
by brad_m
Fri Jun 24, 2016 6:06 am
Forum: Welding Projects - Welding project Ideas - Welding project plans
Topic: Racecar exhaust
Replies: 17
Views: 3232

Racecar exhaust

This is combination of wanting to drop some weight from the car and try a make a few more horse power. The first header flange I bought was for the wrong engine, they sent me a flange for a 5SFE engine instead of a 3SGE. After they finally got me the right one, it was cut with over sized ports that ...
by brad_m
Sat Jun 18, 2016 5:01 am
Forum: Tig Welding - Tig Welding Aluminum - Tig Welding Techniques - Aluminum Tig Welding
Topic: The what I welded today (/whenever) thread (pics please)
Replies: 3253
Views: 539307

Re: The what I welded today (/whenever) thread (pics please)

My first what I welded today.

Nothing special, just a pair intercooler pipes to replace the troublesome rubber ones.
by brad_m
Wed Jun 08, 2016 5:10 am
Forum: Tig Welding - Tig Welding Aluminum - Tig Welding Techniques - Aluminum Tig Welding
Topic: Can I get some advice on my alloy welding
Replies: 14
Views: 1410

Re: Can I get some advice on my alloy welding

Edit: why did you run practice beads on something that you actually planned on using? The part I welded on is machined off completely. The picture explains it. You can see at the back edge that it's not straight and there is a bit missing. For now I need to be able to weld those up and grind them b...
by brad_m
Sat Jun 04, 2016 10:51 pm
Forum: Tig Welding - Tig Welding Aluminum - Tig Welding Techniques - Aluminum Tig Welding
Topic: Can I get some advice on my alloy welding
Replies: 14
Views: 1410

Re: Can I get some advice on my alloy welding

I thought it might also be helpful to post the functionality of my machine.
by brad_m
Sat Jun 04, 2016 3:07 am
Forum: Tig Welding - Tig Welding Aluminum - Tig Welding Techniques - Aluminum Tig Welding
Topic: Can I get some advice on my alloy welding
Replies: 14
Views: 1410

Re: Can I get some advice on my alloy welding

I stopped in and bought AU$50 worth of off cuts and varies sizes and spent some time at my welding table. A few notes: I cut the flat bar long enough to force me to work the rod with left hand, I need the practice of feeding the rod. I still touched a weld with the tungsten a few times. I'm finding ...
by brad_m
Sat Jun 04, 2016 2:53 am
Forum: Tig Welding - Tig Welding Aluminum - Tig Welding Techniques - Aluminum Tig Welding
Topic: Can I get some advice on my alloy welding
Replies: 14
Views: 1410

Re: Can I get some advice on my alloy welding

Overall, the work is not too bad. Automotive hobbyist/enthusiast? I'm a mechanic and have always had an interest in metal work. In high school I did an entry level course that covered basic MIG and stick welding, basic Lath and Mill work and basic sheet metal work. I own my own mechanical workshop ...
by brad_m
Fri Jun 03, 2016 4:07 am
Forum: Tig Welding - Tig Welding Aluminum - Tig Welding Techniques - Aluminum Tig Welding
Topic: Can I get some advice on my alloy welding
Replies: 14
Views: 1410

Re: Can I get some advice on my alloy welding

Jumping in at the deep end, eh? EDIT: Oh, and at those amps, how long is it taking you to get a puddle going? Kym Yeah, it was a bit of jump in the deep end and a bit of this is the only bit of alloy I have and I wanted to play with the new toy. Took 2 or 3 seconds to get a puddle going. The manifo...
by brad_m
Thu Jun 02, 2016 5:47 am
Forum: Tig Welding - Tig Welding Aluminum - Tig Welding Techniques - Aluminum Tig Welding
Topic: Can I get some advice on my alloy welding
Replies: 14
Views: 1410

Can I get some advice on my alloy welding

I bought an AC/CD 200amp TIG machine today. I've been using a small 130amp CIG lift arc for a while on stainless steel. Having never welded alloy before, I figured the best way to learn is to just do it. So I grabbed an old cast intake manifold and layed down some beads. At the end of the last bead ...