Whaler Central - Boston Whaler Boat Information and Photos

Posted by wellcraft on 11/15/19 - 7:02 AM

What's the correct brass drain tube size for a classic 15, I see there are 2 different size on whaler central article but they don't specify and can't find the correct size for my application by doing a search. I'm assuming is 1", I'm I right?

Planning on buying this flaring tool https://www.amazon.com/gp/product/B0082ANA0C/ref=ox_sc_act_title_3?smid=ATVPDKIKX0DER&psc=1

Thanks.

Posted by Acseatsri on 11/16/19 - 11:35 AM

If it's the long one that's about 15" long, you'll probably end up with 1" x .030 wall brass tubing, while the standard drain tubes you buy are .020 wall. To form the .030 wall tubing, heat the end with a propane torch until it's a dull red, then drop it into a bucket of water to anneal it. Also apply a little grease to the tube to help it form the radius. If done right, you should have almost a half circle on the end and will hold a 3/32" x 15/16" or so O-ring in place against the outside of the hull (in addition to 5200 sealant).

Posted by wellcraft on 11/16/19 - 11:41 AM

Acseatsri wrote:
If it's the long one that's about 15" long, you'll probably end up with 1" x .030 wall brass tubing, while the standard drain tubes you buy are .020 wall. To form the .030 wall tubing, heat the end with a propane torch until it's a dull red, then drop it into a bucket of water to anneal it. Also apply a little grease to the tube to help it form the radius. If done right, you should have almost a half circle on the end and will hold a 3/32" x 15/16" or so O-ring in place against the outside of the hull (in addition to 5200 sealant).

Thank you very much for the detail, will definitely do that as I have the torch, just need to order the tool, I'm ordering a 6' tube as I have 2 whaler 15's. I did this a long time ago and I remember I didn't do the annealing process and one of them broke, this time I'll do that.

Thank you.

Posted by Acseatsri on 11/17/19 - 10:12 AM

I'll take this one step farther and suggest using the flaring tool with an air chisel to form the ends. I've done this on a 13' sport, a 15' sport, a 17 Montauk, an 18' Outrage, and a 22' Outrage so far.
I use an 8 pound sledge hammer to back up the tool against the pre-flared end, use an old cut-off chisel to form the flare on the inside of the boat. You should be able to get O-rings on both ends of the tube.