The fabrication thread. - Page 71 - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

drftmark · 08-09-2009, 12:38 PM

Badass, I'm gonna have to get that then. I just thought I wasn't using enough gas.

I am currently ditching that brace, well not ditching, I think it would make a good wing mount, but for the trunk bracing I am cutting out metal on the stock bumper support instead.

I think that is a better route because the equation for the moment of inertia has depth increasing exponentially. The stock bumper support utilizes depth much better than the one I created. So I am just trying to lighten up the stock one.

GSXRJJordan · 08-09-2009, 03:13 PM

Quote:

Originally Posted by [email protected]

for you guys who mig use anti spatter, it will prevent the slag/balls from sticking everywhere and then having to bang/sand them with the spray they fall right off

LuisGonz was telling me that someone makes a spray? I've got the 'gel' shit, that's a pain to use... I use it on stuff that I can't file down though (pack it in crevices right before welding near them, etc), but I'd love a good spray.

atutt · 08-09-2009, 03:57 PM

Wow, was it necessary to quote all those pics just to say that??? This shits a pain to load on my phone when people do dumb crap like that.

Anyways. as far as the anti-spatter goes.

They can be great. But, they'll cause more problems than they solve. You'll get porosity far more frequently.

Gels are the worst. Sprays are a bit better.
Just invest in a good scraper and some good flap discs.

I NEVER use the anti-spatter crap. It takes a min or two to clean up with a grinder or sander.

GSXRJJordan · 08-09-2009, 04:01 PM

No need to quote a billion images, just delete the [img] tags and the HTML in between, and you'll just quote the text.

Quote:

Originally Posted by atutt

Wow, was it necessary to quote all those pics just to say that??? This shits a pain to load on my phone when people do dumb crap like that.

Anyways. as far as the anti-spatter goes.

They can be great. But, they'll cause more problems than they solve. You'll get porosity far more frequently.

Gels are the worst. Sprays are a bit better.
Just invest in a good scraper and some good flap discs.

I NEVER use the anti-spatter crap. It takes a min or two to clean up with a grinder or sander.

Thanks Atutt! I had a feeling it wasn't "a no brainer" since none of the pro's I know use anti-spatter stuff. I'll take a look at the sprays in the future for stuff that I can't grind/file out.

drftmark · 08-09-2009, 04:03 PM

those pics I took were right after welding. I usually hit them with the grinder afterward. Guess I won't be getting the gel stuff then.

atutt · 08-09-2009, 04:21 PM

i built myself a gnarly scrapper for hard to reach places. it's made out of a 1/4" thick saw blade, lol.

i suggest investing in some sort of small sanding/grinding tool. high powered rotary tools are great.

[email protected] · 08-09-2009, 06:02 PM

pros not using spray????
ha if i posted the pic of the FULL CHASSIS i have built then tell a "pro" to go thru the entire chassis to clean it all up...
thats a lot of extra work that there is no need for...
with the spray the welds will pass NDI or pene. inspection no problem...
nothing against those who dont use it but it makes life a lot easier.....

atutt · 08-09-2009, 07:14 PM

Quote:

Originally Posted by [email protected]

pros not using spray????
ha if i posted the pic of the FULL CHASSIS i have built then tell a "pro" to go thru the entire chassis to clean it all up...
thats a lot of extra work that there is no need for...
with the spray the welds will pass NDI or pene. inspection no problem...
nothing against those who dont use it but it makes life a lot easier.....

It's extremely easy to pass a visual inspection. Especially if the inspection is done by someone who isn't an actual weld inspector.

Have all those welds X-rayed then tell me they all pass NDI or pene(???)

You can have tons of porosity without any visual clues up top.

I personally wouldn't to risk the chance of having my roll cage full of tiny little air bubbles.

That's just my opinion.

Otto347 · 08-09-2009, 07:40 PM

I use the gel and spray on my nozzle. I dont like using it plus it smells like shit.

[email protected] · 08-09-2009, 07:45 PM

Quote:

Originally Posted by atutt

It's extremely easy to pass a visual inspection. Especially if the inspection is done by someone who isn't an actual weld inspector.

Have all those welds X-rayed then tell me they all pass NDI or pene(???)

You can have tons of porosity without any visual clues up top.

I personally wouldn't to risk the chance of having my roll cage full of tiny little air bubbles.

That's just my opinion.

i understand where you are coming from but i have personally passed inspections both fluorescent penetrant and NDI ( Non distructive inspection)
i got my certs as a Aeronautical welder so welds have to be perfect.
again it isnt required but mig welding with spray comes out a lot cleaner. and if the full chassis cars i built have passed the test of being dropped from a helicopter then by all means it can handle a roll-over.

onepuff · 08-11-2009, 01:11 AM

Been working on a forward facing upper intake plenum for my RB20DET ala Plazmaman. Fabbed a aluminum baseplate out of 3/8". Ports still need cleaned up a bit.

Been working on a mold to do a layup of CF over. I will wrap the CF around and underneath the mold to make a flange on the inside of the plenum.

Made a ring which will sandwich the CF plenum in between this and the baseplate. This will be bolted down from underneath the baseplate.

Here's a cross-section view of how it will be bolted together.

CF will be vacuum bagged for strength and light weight. The 'sandwich ring' will need to be cut into 2 or 4 pieces so I will be able to get it inside the plenum. The first layer of the layup will be fiberglass to prevent any galvanic reaction between the CF and the aluminum. Should be able to get started on the layup in the next couple of weeks. Already have the CF and other supplies. Just need to get a vacuum pump. Hope it turns out well. Should look something like this.

Om1kron · 08-11-2009, 02:28 AM

damn fancy...

I got my roof on, I start work on the core support and lil brother will be doing body work to the hood (grinding and seam sealer)

roco · 08-11-2009, 04:30 AM

well guys some progress on the buggy.

pretty much finished.

front turrets

weld shots

tube fitment,

and now the frame 95% complete.

longfellow · 08-11-2009, 09:23 AM

Why did you mount it so far in on the FLCA?

roco · 08-11-2009, 10:13 AM

Quote:

Originally Posted by longfellow

Why did you mount it so far in on the FLCA?

do you mean the shock??? if so the i mounted it in there for more travel, and to match the spring weight. there not bought shocks, there out of a civic, so i had to make the best with what i was given.

longfellow · 08-11-2009, 11:06 AM

Yeah I ment the shocks. I was just wondering because its unusual to mount them so far in. It puts more stress on the shock itself thats why I was wondering. It makes sense that you are using a stock shock with a spring rate that is designed for a 2500lb car not a 700-1000lb buggy.

By the way the buggy looks really good!

I just thought of another question. Why didnt you just cut the front upright assembly and drill it out then make custom upper arms that are longer and have more adjustment for camber? Its pretty easily done and you have all the tools to make the arms. All you need is some rod-ends. Because they way it looks now the lower arms are going to follow a completly different arc then the stock upper arms and going to cause alot of problems once the suspension starts moving up and down.

roco · 08-11-2009, 12:12 PM

thats a good observation, and yes i could have made upper a arms, no bother, but the customer didnt exactly want to splash out on this project so once again i had to make do, and i put the top arm slightly off the the lower arm, so it gives camber and Castor on compression, hopefully helping the handleing. the upper arms have alot more move ment than youd think and i can get a good 9-10 inches of functional travel. if it was my buggy, there'd be top and bottom a arms on the front, proper off road shocks, and the same in the rear.

longfellow · 08-11-2009, 12:15 PM

I didnt know this was a low-budget customer build. I've been wanting to build something similar for about 3 years now. Your build is giving me more incentive to start working on my own project.

roco · 08-11-2009, 05:20 PM

because were using cheep as chips every day car parts, this buggy is roughly standing about 3k, and all he has to do is finish wiring and brake lines. and if you were doing the fab your self, then you could knock a good chunk off that.

in fairness its affordable fun.

onehundredoctane · 08-11-2009, 05:59 PM

I'm sure the springs and shocks are a lot stiffer than they need to be being that they are from a passenger car and now on a lite ass tube frame, should be good for getting some air and not bottoming out.

*ManoNegra* · 08-14-2009, 03:38 PM

Finished the Z32 spherical bearing project:

Otto347 · 08-14-2009, 05:49 PM

Buggy looks good roco, should be a blast to drive!

drftmark · 08-14-2009, 07:36 PM

ManoNegra how much time total did you spend doing that? And did you get the spherical's from the GB?

*ManoNegra* · 08-14-2009, 07:49 PM

Quote:

Originally Posted by drftmark

ManoNegra how much time total did you spend doing that? And did you get the spherical's from the GB?

Spent about a month working a few hours after work
a weekend here and there
waiting for material to come in or for machine time to open up

we (friend and myself = Skullworks) made the sleeves - arms and shock mount - for the GB Def started
the spherical bearings we got form QA1 (very nice I might add)

roco · 08-15-2009, 02:35 AM

[email protected] manonegra, fair play, thats some top notch work right there. should improve the handling alot.

roco · 08-15-2009, 03:00 AM

completely striped the frame back down and painted in black enamel

roco · 08-15-2009, 03:01 AM

and then re assembled,. This is as far as I go on
this project, the customer Wanted a full custom
rolling buggy frame, so now its FINNISHED

GSXRJJordan · 08-15-2009, 03:14 AM

Haha, that thing looks like a BLAST. I'm jealous - good work

S14_Kouki · 08-15-2009, 11:50 AM

So I guess I will post up my manifold I just built and DP. Quick overview on my build thread.

dont worry it was ported

Super awesome PS relocation bracket:

Everything done

And before anyone says it the runners are NOT paired. Enjoy

Fabthis.com

GSXRJJordan · 08-15-2009, 12:57 PM

^^^ "Why didn't you use paired runners?" LOL I remember seeing this on the build thread. Mani/craftsmanship looks great.

Hopefully I'll get some sheetmetal laid in the trunk today, and get some more pics. Right now, it looks like this:

08-11-2009, 02:28 AM	#2112
Om1kron Post Whore! Join Date: Sep 2004 Location: Simi Valley, CA Age: 40 Posts: 6,879 Trader Rating: (15) Feedback Score: 15 reviews	damn fancy... I got my roof on, I start work on the core support and lil brother will be doing body work to the hood (grinding and seam sealer) __________________ Wayne

08-11-2009, 04:30 AM	#2113
roco Leaky Injector Join Date: Feb 2009 Location: IRELAND Age: 35 Posts: 145 Trader Rating: (0) Feedback Score: 0 reviews	well guys some progress on the buggy. pretty much finished. front turrets weld shots tube fitment, and now the frame 95% complete. __________________ "Racing is life. Everything else that happens before or after is just waiting." ~Steve McQueen [Le Mans -1970]

08-11-2009, 12:12 PM	#2117
roco Leaky Injector Join Date: Feb 2009 Location: IRELAND Age: 35 Posts: 145 Trader Rating: (0) Feedback Score: 0 reviews	thats a good observation, and yes i could have made upper a arms, no bother, but the customer didnt exactly want to splash out on this project so once again i had to make do, and i put the top arm slightly off the the lower arm, so it gives camber and Castor on compression, hopefully helping the handleing. the upper arms have alot more move ment than youd think and i can get a good 9-10 inches of functional travel. if it was my buggy, there'd be top and bottom a arms on the front, proper off road shocks, and the same in the rear. __________________ "Racing is life. Everything else that happens before or after is just waiting." ~Steve McQueen [Le Mans -1970]

08-11-2009, 05:20 PM	#2119
roco Leaky Injector Join Date: Feb 2009 Location: IRELAND Age: 35 Posts: 145 Trader Rating: (0) Feedback Score: 0 reviews	because were using cheep as chips every day car parts, this buggy is roughly standing about 3k, and all he has to do is finish wiring and brake lines. and if you were doing the fab your self, then you could knock a good chunk off that. in fairness its affordable fun. __________________ "Racing is life. Everything else that happens before or after is just waiting." ~Steve McQueen [Le Mans -1970]

08-15-2009, 02:35 AM	#2125
roco Leaky Injector Join Date: Feb 2009 Location: IRELAND Age: 35 Posts: 145 Trader Rating: (0) Feedback Score: 0 reviews	[email protected] manonegra, fair play, thats some top notch work right there. should improve the handling alot. __________________ "Racing is life. Everything else that happens before or after is just waiting." ~Steve McQueen [Le Mans -1970]

08-09-2009, 12:38 PM	#2101
drftmark Zilvia Junkie Join Date: Nov 2005 Location: tx Posts: 524 Trader Rating: (5) Feedback Score: 5 reviews	Badass, I'm gonna have to get that then. I just thought I wasn't using enough gas. I am currently ditching that brace, well not ditching, I think it would make a good wing mount, but for the trunk bracing I am cutting out metal on the stock bumper support instead. I think that is a better route because the equation for the moment of inertia has depth increasing exponentially. The stock bumper support utilizes depth much better than the one I created. So I am just trying to lighten up the stock one.

08-09-2009, 03:57 PM	#2103
atutt Zilvia Addict Join Date: Oct 2006 Location: barrie, ontario, canada Age: 35 Posts: 997 Trader Rating: (0) Feedback Score: 0 reviews	Wow, was it necessary to quote all those pics just to say that??? This shits a pain to load on my phone when people do dumb crap like that. Anyways. as far as the anti-spatter goes. They can be great. But, they'll cause more problems than they solve. You'll get porosity far more frequently. Gels are the worst. Sprays are a bit better. Just invest in a good scraper and some good flap discs. I NEVER use the anti-spatter crap. It takes a min or two to clean up with a grinder or sander.

08-09-2009, 04:03 PM	#2105
drftmark Zilvia Junkie Join Date: Nov 2005 Location: tx Posts: 524 Trader Rating: (5) Feedback Score: 5 reviews	those pics I took were right after welding. I usually hit them with the grinder afterward. Guess I won't be getting the gel stuff then.

08-09-2009, 04:21 PM	#2106
atutt Zilvia Addict Join Date: Oct 2006 Location: barrie, ontario, canada Age: 35 Posts: 997 Trader Rating: (0) Feedback Score: 0 reviews	i built myself a gnarly scrapper for hard to reach places. it's made out of a 1/4" thick saw blade, lol. i suggest investing in some sort of small sanding/grinding tool. high powered rotary tools are great.

08-09-2009, 06:02 PM	#2107
[email protected] Zilvia Addict Join Date: Jan 2008 Location: 310 all day! Age: 40 Posts: 912 Trader Rating: (4) Feedback Score: 4 reviews	pros not using spray???? ha if i posted the pic of the FULL CHASSIS i have built then tell a "pro" to go thru the entire chassis to clean it all up... thats a lot of extra work that there is no need for... with the spray the welds will pass NDI or pene. inspection no problem... nothing against those who dont use it but it makes life a lot easier.....

08-11-2009, 01:11 AM	#2111
onepuff Zilvia Member Join Date: Oct 2006 Location: ohio Age: 42 Posts: 290 Trader Rating: (2) Feedback Score: 2 reviews	Been working on a forward facing upper intake plenum for my RB20DET ala Plazmaman. Fabbed a aluminum baseplate out of 3/8". Ports still need cleaned up a bit. Been working on a mold to do a layup of CF over. I will wrap the CF around and underneath the mold to make a flange on the inside of the plenum. Made a ring which will sandwich the CF plenum in between this and the baseplate. This will be bolted down from underneath the baseplate. Here's a cross-section view of how it will be bolted together. CF will be vacuum bagged for strength and light weight. The 'sandwich ring' will need to be cut into 2 or 4 pieces so I will be able to get it inside the plenum. The first layer of the layup will be fiberglass to prevent any galvanic reaction between the CF and the aluminum. Should be able to get started on the layup in the next couple of weeks. Already have the CF and other supplies. Just need to get a vacuum pump. Hope it turns out well. Should look something like this.

08-11-2009, 09:23 AM	#2114
longfellow Zilvia Addict Join Date: Apr 2006 Location: Tampa Area Posts: 606 Trader Rating: (2) Feedback Score: 2 reviews	Why did you mount it so far in on the FLCA?

08-11-2009, 11:06 AM	#2116
longfellow Zilvia Addict Join Date: Apr 2006 Location: Tampa Area Posts: 606 Trader Rating: (2) Feedback Score: 2 reviews	Yeah I ment the shocks. I was just wondering because its unusual to mount them so far in. It puts more stress on the shock itself thats why I was wondering. It makes sense that you are using a stock shock with a spring rate that is designed for a 2500lb car not a 700-1000lb buggy. By the way the buggy looks really good! I just thought of another question. Why didnt you just cut the front upright assembly and drill it out then make custom upper arms that are longer and have more adjustment for camber? Its pretty easily done and you have all the tools to make the arms. All you need is some rod-ends. Because they way it looks now the lower arms are going to follow a completly different arc then the stock upper arms and going to cause alot of problems once the suspension starts moving up and down.

08-11-2009, 12:15 PM	#2118
longfellow Zilvia Addict Join Date: Apr 2006 Location: Tampa Area Posts: 606 Trader Rating: (2) Feedback Score: 2 reviews	I didnt know this was a low-budget customer build. I've been wanting to build something similar for about 3 years now. Your build is giving me more incentive to start working on my own project.

08-11-2009, 05:59 PM	#2120
onehundredoctane Post Whore! Join Date: Oct 2006 Location: Greensborough, NC Posts: 2,783 Trader Rating: (3) Feedback Score: 3 reviews	I'm sure the springs and shocks are a lot stiffer than they need to be being that they are from a passenger car and now on a lite ass tube frame, should be good for getting some air and not bottoming out.

08-14-2009, 03:38 PM	#2121
ManoNegra Guild of Skullduggerous Intent Join Date: Jan 2004 Location: Socal Posts: 7,841 Trader Rating: (48) Feedback Score: 48 reviews	Finished the Z32 spherical bearing project:

08-14-2009, 07:36 PM	#2123
drftmark Zilvia Junkie Join Date: Nov 2005 Location: tx Posts: 524 Trader Rating: (5) Feedback Score: 5 reviews	ManoNegra how much time total did you spend doing that? And did you get the spherical's from the GB?

08-15-2009, 03:00 AM	#2126
roco Leaky Injector Join Date: Feb 2009 Location: IRELAND Age: 35 Posts: 145 Trader Rating: (0) Feedback Score: 0 reviews	completely striped the frame back down and painted in black enamel __________________ "Racing is life. Everything else that happens before or after is just waiting." ~Steve McQueen [Le Mans -1970]

08-15-2009, 03:01 AM	#2127
roco Leaky Injector Join Date: Feb 2009 Location: IRELAND Age: 35 Posts: 145 Trader Rating: (0) Feedback Score: 0 reviews	and then re assembled,. This is as far as I go on this project, the customer Wanted a full custom rolling buggy frame, so now its FINNISHED __________________ "Racing is life. Everything else that happens before or after is just waiting." ~Steve McQueen [Le Mans -1970]

08-15-2009, 03:14 AM	#2128
GSXRJJordan Post Whore! Join Date: May 2006 Location: << 626 >> Posts: 9,135 Trader Rating: (19) Rides Gallery: GSXRJJordan Feedback Score: 19 reviews	Haha, that thing looks like a BLAST. I'm jealous - good work __________________ Jordan Innovations has a new web site! www.JordanInnovations.com -- All your favorite FD Pro Drifters love it, trust me -- www.JordanInnovations.com

08-15-2009, 11:50 AM	#2129
S14_Kouki Nissanaholic! Join Date: Nov 2005 Location: TPA Posts: 1,947 Trader Rating: (4) Feedback Score: 4 reviews	So I guess I will post up my manifold I just built and DP. Quick overview on my build thread. dont worry it was ported Super awesome PS relocation bracket: Everything done And before anyone says it the runners are NOT paired. Enjoy Fabthis.com

08-15-2009, 12:57 PM	#2130
GSXRJJordan Post Whore! Join Date: May 2006 Location: << 626 >> Posts: 9,135 Trader Rating: (19) Rides Gallery: GSXRJJordan Feedback Score: 19 reviews	^^^ "Why didn't you use paired runners?" LOL I remember seeing this on the build thread. Mani/craftsmanship looks great. Hopefully I'll get some sheetmetal laid in the trunk today, and get some more pics. Right now, it looks like this: __________________ Jordan Innovations has a new web site! www.JordanInnovations.com -- All your favorite FD Pro Drifters love it, trust me -- www.JordanInnovations.com

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