Posted July 01, 2003 - 05:33 AM
Posted July 01, 2003 - 06:06 AM
Posted July 01, 2003 - 07:14 AM
Jetser is right they just use a souped up blow dryer. Just make sure the plastic rod is the same material as the tank.
Posted July 01, 2003 - 12:04 PM
Basic principle is to heat the plastic, and feed in some filler material... sames as welding metal...
Practice on an old fender first... I use the heat gun for getting out the white spots on the plastic, and have welded some kids toys together... Just take your time on the tank... clean and degrease the area, and even use a dremel to make a small channel to allow the filler to flow deeper into the crack...
Posted July 03, 2003 - 07:06 AM
For less than $200, I wouldn't even take the chance.
Posted July 03, 2003 - 07:10 AM
Why take a chance of burning up your bike if the weld fails?
Posted July 03, 2003 - 07:14 AM
Posted July 03, 2003 - 09:24 AM
Your plastic pipe welding example doesn't fit this situation. You are refering to a guy who is welding a known base material with the compatible additional material spec'd out by either a PE or the company that sells both products.
I'd still just get the new tank. There are used one's on this site all the time.
If you decide not to get a new one, I'd call your insurance company and check what fire/theft insurance cost. That way when you spontaneously burst into flames, you can at least get a new bike.
Posted July 03, 2003 - 09:30 AM
Posted July 03, 2003 - 11:16 AM
OT: By the way, my buddy and his brother just bought new GasGas trials bikes. Said they are sweet and there is a dealer about 45 miles away from me. I'll have to check them out.
Posted July 03, 2003 - 12:45 PM
Much of the physical properties of a plastic part have a lot to do with they way they are formed. Much of the strength comes with the material flowing in one direction much like wood is stronger against the grain vs with it. This is more true for amorphous materials not crystalline materials that most of our motorcylcles parts are made from. Then its more a matter of how the part cures and the amount and size of crystal strutures that are formed. You would loose that in a "welded" section.
Most if not all plastic parts now produced have the material in which they are made from molded onto the part somewhere. Its for recycling purposes. Most of our bikes plastic parts are made from PP (Polypropolyne) so the argument that we don't know what the base resins is not true.
I still would not even think about welding a fuel tank holding 2.4 gallons of highly flammable material and mount it on a bike that I ride through rough terrain. Looking for trouble.
BUY A NEW ONE!
Posted July 03, 2003 - 03:27 PM
Posted July 03, 2003 - 07:12 PM
Posted July 04, 2003 - 07:17 AM
Look at my picture. Don't ever attempt a repair.
Hokie smokes- Start kicking dirt!!
Posted July 04, 2003 - 10:42 AM
I agree that a lot of the newer plastic parts being produced today have this information near the recycle symbols. Many parts still don't so I'd still argue that someone who portrays themselves as being capable of doing this job could easily screw it up. Either by choosing the wrong material or not doing the job correctly. It's just not worth it.