Exhaust Pipe

[JCMarshall]

Has anyone had any experience with using thin walled stainless for exhaust tubing, specifically 1-3/8 (34.92mm) with 0.9mm wall.

-Is there anyone in Australia that will supply it or something similar (same OD)?
-Is there anyone in Australia that will mandrel bend it?

We have always used mild steel 1-3/8 with a 1.6mm wall but we would like to use the thinner walled stuff just to save weight. Is there any other issues with using the thin material.

Thanks,
Pat, UQ Racing

[Scott Wordley]

we used 1.6 stainless last year and like yourself are trying to beg, borrow or steal some 0.9.

If you find any we'd really appreciate it if you let us know, we'll do likewise.

Regards,

Scott Wordley & Roan Lyddy Meaney
Monash FSAE Wingmen
http://www-personal.monash.edu.au/~fsae

[Jimboblofski]

For our class 1 200 car ( overall winners ) I was looking for 0.6 mm wall thikness!!!. If I remember rightly we sourced some from the areospace industry but it was way out of our budget (£1000)

My resoning for that dimension was that as long as it lasted the competion then it did its job.

[King Missile]

Word of advice. Get in good with local sportbike exhaust manufacturers. When I was at Yosh we supplied thin wall to some race teams (not FSAE). Yosh didn't use much of it but we could buy it at reasonable prices due to the volumes of other wall thicknesses we bought. Then we'd sell it to the teams. In the UK there are a number of such companies. In Australia... I'm not sure, premise holds true though, find a company that buys a lot of stainless in general and see if they can get thin-wall for a reasonable price from their supplier.

Where are we going? And why are we in this handbasket?!

[imajerk]

Everyone - don't go thin walled. You will not save much weight. You will save weight by running no driver and wheels... inherently much lighter.

Best Regards,

John Meszaros & Bunny
Monash FSAE NA
http://www-personal.monash.edu.au/~fsae

[dancin stu]

<BLOCKQUOTE class="ip-ubbcode-quote"><font size="-1">quote:</font><HR>Originally posted by John & Bunny:
Everyone - don't go thin walled. You will not save much weight.

<HR></BLOCKQUOTE>

yes you can! i was on the same team as jimboblofski last year i can tell you that it was very very light, our twin carbon silencers were exceptionally light and looked the nads!
seriously though, our final year team had a 'custom' exhaust built for them by an exhaust company, and it was an absolute disgrace, weighed an absolute ton, massively over engineered, and it ended up going in the bin.

anyway when the all up weight of the cars is only 200kg, every few grams that can be saved off of each component add up to provide a few all important kilos off of the end weight, sound engineering, and attention to detail will always win in the end

[Scott Wordley]

I'm serious.

If you want to make any more stupid posts at least have the curtesy of taking Monash's name off them.

I'm not sure I understand what you're trying to do or why, but I really don't think its working.
So stop it.

Regards,

Scott Wordley & Roan Lyddy Meaney
Monash FSAE Wingmen
http://www-personal.monash.edu.au/~fsae

[imajerk]

Get some laughter in your belly, but really – I recommended using no wheels and driver, how serious is that?

Everyone knows one can save weight with thinner walled headers. Monash is going thin walled this year and our whole exhaust system is going to weigh 3kg (excluding muffler, which could weight in at less than 900g). This is a huge improvement over last years at 6kg, and another 2.2kg for muffler.

Now the world knows Monash's nasty thin walled secret.
http://fsae.com/groupee_common/emoticons/icon_wink.gif

Best Regards,

John Meszaros & Bunny
Monash FSAE NA
http://www-personal.monash.edu.au/~fsae

[guidoc]

we used .028 stainless for our headers in 2002 and 2003. I think thats like .71 mm or something. you guys and your metric measurements....

i don't think we had any problems with it, but we did save alot of weight switching from the mild steel to the stainless...and it looks cooler. Just be careful when you weld it, and make sure you use a sheild gas on the inside of the tube to eliminate any slag buildup.