Rainboat 170 - Rebuild Started

[Rainboat]

I have mid to late 70's (I think) Aquasport 170. Took all the hardware off, cut the sole out and started the transom.
Fun stuff.

[RickK]

Welcome aboard and glad to see you're bringing a 170 back to life.
Do you have notches in the liner where the rear cleats are? If so that is a post '71 hull. If you look on the aft side of the transom, starboard side, you should see a "stamp" in the gelcoat and the last 2 digits is the year - this is the Hull ID Number (HIN) - Google that to understand the numbers. If there is no number you may have a '71 ish

[Rainboat]

Ok, checked the HIN and looks like the hull is from 1973. Thanks for the tip.
NK

[RickK]

So that tells me that you do have the notches for the cleats.

[Rainboat]

I did have notches for the cleats. I cut them out to access the hull sides and transom etc...I'm going to reinforce the transom hull connection. I'm going to get the transom skin exposed and all the stringer delams etc cleaned up this week and next. At least that's the plan...
NK

[Rainboat]

I took the liner out. It was easier to get out than I expected. Next step is to grind on the hull and find
all the delaminations and cracks and voids and to prepare the surface for some reinforcement.

I am thinking of adding cleats to sides of hull and then tie the new sole to the sides. Seems like this would really stiffen up the hull.
I'm also going to add a new hardwood inner shear to replace the rotten ply that runs around the top of the hull.

Also, I've cut the stringers off about a foot forward of the transom. I'm  thinking of putting in a bulkhead here and just tying stringers to the bulkhead instead of the transom. The bulkhead would be part of the motor well that I want to put in. I would add some knees to the transom.

Just some preliminary ideas...any thoughts?

[RickK]

Looks like that worked out well. Something to ponder is how do you plan to finish the inside of the boat? If you are going to spray gelcoat or paint would tell you what resin to use in the resto. You mention tieing floor into hull, I did that also. I used polyester above the floor and epoxy below the floor. But I tied the floor into the hull from the top with epoxy only because I could hide the joint behind the liner. If you are going to raise the floor an inch or two, you'll have to account for that height in the liner sides.
Cutting the stringers back 12" might be just shy of what you need when replacing and laminating the transom in - usually 18" is about what you need.
Consider what you will be doing to the low point in the hull as you laminate the transom core in.
Here is a link to where I explain the thought of the PVC pipe
http://classicaquasport.com/smf/index.php?topic=13148.msg133124#msg133124

Here is a link to where I show what is actual problem
http://classicaquasport.com/smf/index.php?topic=13148.msg133556#msg133556

Here is a link to Hawgleg's rebuild that shows the PVC pipe installation to keep a drain at the new low point of the boat
http://classicaquasport.com/smf/index.php?topic=13148.msg134262#msg134262

I did not do this on my rebuild - wish I had thought of it earlier. Now I always have a couple inches of water in the hull in the aft 

[AquasportEd]

Looking good Raincoat. I'm planning on starting a 170 rebuild shortly, so Ill be following this. Curious as to how you got the liner out, did you have some sort of hoist or gantry? Any ballpark on what that liner weighs, minus the deck you cut out? Thanks.

[Rainboat]

I ran a flat bar around the connection and between the crossmember that is near the storage wells forward. Four of us lifted it out easily. Bet it weighs around 100#.

[AquasportEd]

Thanks for the info, im thinking pulling the liner out is the way ill go once i put the boat under the knife.

[Rainboat]

I installed a 1x4 grid to register the approximate location of stringer sides. I'm going to clean up the insides as much as possible. I'll screw 3/8" ply to the insides of stringer panels and glass to hull. After inside glassed I'll tab outside of stringer to hull and then fill with foam, trim and glass a few layers to finish.
I'm going to leave the bulkhead in because it seems like a strong connection between stringers. Where stringers are cut I'm thinking of adding a stringer/sole height bulkhead and then build a motor well up from there. That part is not all the way thought out. Any thoughts on that. I'll draw it out and post later.
NK

[RickK]

Looks really clean. If you want to stiffen the hull I would scruff up the hull sides and 6-8 inches of the hull bottom where it meets the sides. Then laminate 1708 down the hull sides and past the chine 6-8". Here is how I did mine.

[Rainboat]

I think I will! Might as well while I'm in here.
Thanks,
NK

[sowers22]

 How's the rebuild coming along? Want to see more!!

[Rainboat]

Just back from fishing trip to Mex. Hope to get started this week if weather improves a little.
I have transom cut and I'm ready to re-foam stringers.
Stay tuned.
NK