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SV Carbon Tank project for Zoran

Right, but how are you skirting the surface finish issue with a splash mould? Seems like you either get the plug spot-on, or the final piece. Am I missing something here?

I'm only talking about one-off sorts of jobs; probably should have clarified that. Also we need to clarify that this method is not as dimensionally accurate. But I bet if your mould is within 2-3 mm on all sides (as is possible with a fuel tank), then you're probably okay.

Another drawback is fairing out your final piece, so there's added mass from that exercise. I doubt it amounts to much unless there are some nasty irregularities in the mould.
 
Its an aweful lot easier to get a good surface from a near-spot-on plug than from a lost foam exercise - vastly less sanding etc. Also the foam does indeed compress if used to a level where you get a decent fibre/matrix ratio. Its ok for one off cosmetics that you're willing to spend a lot of time sanding, but ot make accurate, repeatable well finished items you need the female mould IMO. I cant think of a time when I'm making something that i dont need dimensional accuracy and a good finish?
 
overthepond said:
Its an aweful lot easier to get a good surface from a near-spot-on plug than from a lost foam exercise - vastly less sanding etc. Also the foam does indeed compress if used to a level where you get a decent fibre/matrix ratio. Its ok for one off cosmetics that you're willing to spend a lot of time sanding, but ot make accurate, repeatable well finished items you need the female mould IMO. I cant think of a time when I'm making something that i dont need dimensional accuracy and a good finish?
Click to expand...

Agreed - at least that's been my experience. Which is why I approach these sorts of projects the way I do. The splash mold part goes pretty quickly and with a bit of body work, you get a nice plug. In the end, I suppose it's how you prefer to spend the time it takes to get to a plug that meets your particular need.
I just enjoy hearing about everyone else's experience.
Keep up the good work.
 
tygaboy said:
I'm about to install a turbo diesel engine in my '52 Suburban hot rod project and I'm planning a bunch of carbon trim and accent pieces so I may end up with some more useful "heat exposure" experience in the near future.

Chris
925-708-5295
Click to expand...

I've already said before that I love this thread, but please dear God, post some shots of that sucker when you get a chance. Another progress thread would be sweet. :)
 
Mickey_D100 said:
I've already said before that I love this thread, but please dear God, post some shots of that sucker when you get a chance. Another progress thread would be sweet. :)
Click to expand...

A teaser for now! :teeth Here's what I starting with... It's going to be too cool!
Let's not turn this thread into a one about the 'burb. Details and progress as it occurs can be viewed here:

http://67-72chevytrucks.com/vboard/showthread.php?t=249457

3420653-p6100015.jpg
 
HEY!! I already told you, no dreaming about the 'Burb until the secret project is completed! :shame


Lonster
 
Moike said:
I've been thinking about ditching the entire messy fiberglass plug process and going the ABS/Vac table/Plaster route to take molds off of parts and make molds for fiberglass/bagging. Seems like it would save so much time.

-Mike-
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Yep, I met a guy who's doing this. Makes GREAT molds - provided the shape is suitable. Plus, you get a nice flange that makes vacuum bagging SOOOOOO much simpler and easier.

Let me know if you get something like this. I'd love to stop by and watch and learn.

Chris
 
tygaboy said:
Yep, I met a guy who's doing this. Makes GREAT molds - provided the shape is suitable. Plus, you get a nice flange that makes vacuum bagging SOOOOOO much simpler and easier.

Let me know if you get something like this. I'd love to stop by and watch and learn.

Chris
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I've got the industrial oven, and the shop vac... I just need the motivation to build the vac table and the frames for the PVC sheets I'll give you a yell when I get something fabbed up and start trying it out.

(edit) I see on your 'burb project you used a soda blaster. I just got my new Eastwood catalog, and they have a portable unit for a little under 400 bucks. With our sponsorship deal through Eastwood I can probably get it knocked down under 300 to my door with a 50lb bag of baking soda. I'm really -really- tempted to pick one up. How effective would you say it was at stripping?

http://www.eastwoodco.com/jump.jsp?itemID=16321&itemType=PRODUCT

Bonus, soda blasters strip paint from -fiberglass- and -abs plastic-
-Mike-
 
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Moike said:
I see on your 'burb project you used a soda blaster. How effective would you say it was at stripping?

http://www.eastwoodco.com/jump.jsp?itemID=16321&itemType=PRODUCT

Bonus, soda blasters strip paint from -fiberglass- and -abs plastic-
-Mike-
Click to expand...

The soda blasting works great. It won't do much if there is rust that's "worse" than light surface rust. I still had to grind off the worst of the Suburban - sand or other media blasting would have done that part better. But soda doesn't heat the surfaces, warp panels, remove base material... And it's biodegradable. I say go for it.
 
Wow, awesome thread, it actually conviced me to register so I can subscribe to it and ask a couple questions, if you dont mind.

Since it's a race bike, would you conisdder putting a fuel cell into the tank to help with sloshing?

I noticed there was a "seam" along the middle of the top of the tank where the 2 parts of the mold joined, have you found any method to eliminate that?

If you didn't want to modify the shape of the stock tank, could you use the actual stock tank as the plug and avoid making the splash mold and fiberglass plug?

Thanks.
 
superart said:
Wow, awesome thread, it actually conviced me to register so I can subscribe to it and ask a couple questions, if you dont mind.

Since it's a race bike, would you conisdder putting a fuel cell into the tank to help with sloshing?

I noticed there was a "seam" along the middle of the top of the tank where the 2 parts of the mold joined, have you found any method to eliminate that?

If you didn't want to modify the shape of the stock tank, could you use the actual stock tank as the plug and avoid making the splash mold and fiberglass plug?

Thanks.
Click to expand...


Sure, foam in the tank would be fine. As to the seam: I'd want to do a UV protectant clear coat so the seam, which is just a tiny ridge of epoxy, gets sanded off anyway. Take a look at the pics of my SV tank and you'll see there is no seam/ridge even though the same type of two-piece top mold was used.
And on the use of the stock tank shape: Take a read of the first part of this thread where I talk about the need for a bonding interface between top and bottom. The stock tanks generally have a seam that serves that purpose. Not the most composite friendly shape. I have done a tank using that approach but I greatly prefer the larger flat surface I can build when I reshape. Plus you still have to deal with a spot where the gas cap and various vents will go so you'll have to deal with that on your mold if you don't deal with it on the plug. I'd rather spend time on the plug and never mess with the mold.
 
what's going on with the rvf/sv? ... the burb?

C'mon man... how am I supposed to live vicariously here? :teeth
 
Damn, thanks for bringing this thread back from the dead. It is not my favorite thread along with MotoLiam.

Sick!
 
Tygaboy, I live in San Jose and was wondering if you be be interested in making a carbon fibre splitter for this. There are probably about 6 of us builders in CA alones who would be interested. PM me if you would be interested.
Thanks,
Mike
 
maranello31 said:
Tygaboy, I live in San Jose and was wondering if you be be interested in making a carbon fibre splitter for this. There are probably about 6 of us builders in CA alones who would be interested. PM me if you would be interested.
Thanks,
Mike
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Mike,
Let me know how to reach you or PM me or give me a call. We can talk details and see how I might be able to help.
925-708-5295
 
SikDMAX said:
Any updates on the Burb? 67-72 hasnt been updated in a while.
Click to expand...

Nothing interesting to report. But now that I've finished building my shop :thumbup, , I'll be bringing it home. The paint scheme has been selected (it's eerily similar to my SV/MV, imagine that...) and I'm zeroing in on the interior design. Carbon dash/console, stuff like that.

More pics as I make progress.
 
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