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- This topic has 37 replies, 14 voices, and was last updated 9 years, 8 months ago by
The Boat House.
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March 23, 2015 at 4:35 pm #12619
Tubs, I think you talked me into plan "D"! Like you say, I think the
back of the tank is fairly well reinforced, and the ends are a small
enough area that they may be okay. Will have to play with some
regulators to see if I can maintain a low psi. Thanks!Prepare to be boarded!
March 23, 2015 at 5:14 pm #12622Try 9 psi, this comes from tech session with Jay Walls doing the demonstration. He said and I quote, "Not 8 psi, not 10 psi…9 psi is the number", LOL
http://www.richardsoutboardtools.com
classicomctools@gmail.comMarch 23, 2015 at 9:15 pm #12635Glad the magic number isn’t 8.5, and I hope my regulator
isn’t made in China! After today, the Neptune is starting
to look like an outboard again. Started cutting some 2×6"
boards for the gas tank cage, so perhaps I’ll put some air
to the tank tomorrow.Prepare to be boarded!
March 23, 2015 at 9:23 pm #12636At work, I have a "pin gun", which "welds" whatever gauge pins, in whatever length I need onto metal.
I wonder, if I weld the pin on the dent, then use a slide hammer to pull the dent out, the grind off the pin and buff out?
Havent tried it yet but may on an old tank I don’t mind ruining.
March 24, 2015 at 12:12 am #12647Went back out to the garage after supper, and started putting together
a gas tank bomb shelter for the dent removal operation.
I used 3-1/2 torx screws, but will put a bar clamp on each end for good luck.
Think this will suffice?Gas tank bomb shelter?
http://www.grayhitandmiss.com/Outboards/tank1.jpg
http://www.grayhitandmiss.com/Outboards/tank2.jpg
http://www.grayhitandmiss.com/Outboards/tank3.jpg
http://www.grayhitandmiss.com/Outboards/tank4.jpg
http://www.grayhitandmiss.com/Outboards/tank5.jpg
http://www.grayhitandmiss.com/Outboards/tank6.jpg
http://www.grayhitandmiss.com/Outboards/tank7.jpg
http://www.grayhitandmiss.com/Outboards/tank8.jpgNeptune Progress ….
http://www.grayhitandmiss.com/Outboards … ch2015.jpgPrepare to be boarded!
March 24, 2015 at 12:18 am #12649One note, rinse the inside of the tank with soapy water, or at least water many times, if using heat you want to make absolutely sure there is NO leftovers in there.
http://www.richardsoutboardtools.com
classicomctools@gmail.comMarch 24, 2015 at 2:12 am #12659It’s been cleaned inside with Pinesol and a handful of wood screws, shaken, not stirred.
Hopefully Pinesol isn’t flameable!
I always like to first take the cap off a cleaned tank, and shoot the torch flame
inside the tank quick to make sure there’s no flameable vapors.Prepare to be boarded!
March 24, 2015 at 11:09 am #12674😀 Tubs is correct, it’s very easy to bulge out an aluminum tank if your not carefull. I did that to a PO15 tank years ago. It took all the dents out, but now the tank looks pregnant and also holds a lot more gas!
March 24, 2015 at 11:56 am #12676quote Buccaneer:Went back out to the garage after supper, and started putting together
a gas tank bomb shelter for the dent removal operation.
I used 3-1/2 torx screws, but will put a bar clamp on each end for good luck.
Think this will suffice?Gas tank bomb shelter?
http://www.grayhitandmiss.com/Outboards/tank1.jpg
http://www.grayhitandmiss.com/Outboards/tank2.jpg
http://www.grayhitandmiss.com/Outboards/tank3.jpg
http://www.grayhitandmiss.com/Outboards/tank4.jpg
http://www.grayhitandmiss.com/Outboards/tank5.jpg
http://www.grayhitandmiss.com/Outboards/tank6.jpg
http://www.grayhitandmiss.com/Outboards/tank7.jpg
http://www.grayhitandmiss.com/Outboards/tank8.jpglooks solid enough
and….can’t wait to see the results
post more photo’s pleaseMarch 24, 2015 at 12:08 pm #12677I use the method above. Air inside..least outside…tapping with a rawhide mallet as needed and on bad dents I will alternate heat with a cold source…IE; snow, ice, or dry ice. This allows the metal to get hot…then hitting it with dry ice it will contract and move back toward its original shape due to the temp difference.
I’ve done this on "neck cushion type tanks" like you are doing now, steel Firestone teardrop tanks, and even a few big Johnson SD tanks that are in fact pressure tanks made of very heavy aluminum.
The air pressure may need to be more for some types of tanks, but start with what Tubs is suggesting.
It takes time, and patience, but it will get there!
Greg
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