The stRingers are out!

[OhioLowell]

Re: The stRingers are out!

Thanks again guys!

That is a GREAT SITE nova! I think I may order from there. I know we've been through this before but what is the best filler? I was thinking milled fiber?

I'm going to give them a call and find out about working temps for their epoxy. DO you have any suggestions on cloth weight, Nova?

Thanks again!
Lowell

 

[Nova II 260]

Re: The stRingers are out!

Yeah, you will have to wait for warmer temps, or do it indoors.
Greer has micro balloons also. Use ballons in places where you need to sand and look pretty. You buy rems from ebay ( I did) you get a good and you can chop up your own fibre fill.

 

[OhioLowell]

Re: The stRingers are out!

Does the fill that I use effect the overall strength of the bond? I'm mostly thinking about the little gaps that will get filled in around the transom. I didn;t know if one filler gives more strength than another.

I also spoke to the people at greer and they told me as long as it is above 37 degrees outside that I would be fine working with therir expoy!8) TO me that is a huge bonus!

Thanks,
Lowell

 

[Saskatoon2005]

Re: The stRingers are out!

Ohio,

check this out, it should help you out abit....

http://forums.iboats.com/bbBoard.cgi?a=viewthread;fid=26;gtid=1262415

Good Luck!

Patrick

 

[OhioLowell]

Re: The stRingers are out!

Thanks all!

I ordered 1.5 gal of epoxy, 1/2 gal of 1/32" milled fiber to use as filler. I also picked up one gallon of the poly that was on sale at the auto parts store.

Next, I'll start on the transom cut out.

I'll keep you all posted.

Lowell

 

[Saskatoon2005]

Re: The stRingers are out!

Make sure you take pictures of your work ...step-by-step, so others can learn from your work. Good Luck!

Patrick

 

[ondarvr]

Re: The stRingers are out!

Remember, polyester won't bond well to epoxy, so it's best not to mix and match in the same repair. It won't really make a big difference in which one you use, both will work fine, so it's just up to you.

 

[Saskatoon2005]

Re: The stRingers are out!

Ondarvr,

I should have clarified that I guess. Yeah it's true! Epoxy bonds to everything, but polyester only bond to polyester (old and new). That is right!, sorry about that. My bad!

Patrick

 

[OhioLowell]

Re: The stRingers are out!

Remember, polyester won't bond well to epoxy, so it's best not to mix and match in the same repair. It won't really make a big difference in which one you use, both will work fine, so it's just up to you.

So this means that I can use poly to glass my new transom before it goes into the hull. Then use epoxy to anchor the transom into the hull? Because epoxy will stick to poly but not voce versa? This also has me thiniking that it would be easier to use nothing but epoxy on the stringers when they go in so I don't have any bonding issues. Is there anyway you can make poly stick to epoxy?

This evening I liberated the new transom from the 4x8 dictatorship that has held it captive since it's birth! I'm going to run the router around the edges to make them both identical in size. After these are laminated together they should get 2 layers of galss? What kind of thickness can I expect these 2 layers to add to my new transom? I don;t want it to be too big to fit after it is glassed.

I was also thinking about the transom knees. Will the plywood surrounding the bilge suffice for these? It would make since that they would as the will run from the hull up onto the transom.

Thanks,
Lowell

 

[Saskatoon2005]

Re: The stRingers are out!

Ohio,

That transom looks great....very good job, your boat is starting to look new again. I bet it feels great as well. Nice work. Now on to your questions...

Yes, you can laminate the transom and glass it with poly, absolutely yes! Again, yes, to using epoxy to attach it to the old transom glass!

Epoxy on the stringers would make your job a heck of a lot easier. Absolutely yes!

Someone might have a way to stick poly to epoxy, but you'd have to wait and see. You could start a new thread, asking that...I would be curious...LOL!

Check that link I gave you about how that guy installed his transom and stringers. how many layers did he do? Follow that and you should have no problems! The added layers shouldn't be more than 1/4" thickness added to the transom. It won't affect the mounting of the motor. Don't glass the sides of the transom, make sure you put glass in between the sheets of plywood. Just make sure you coat the edges with resin. It will stop water from entering into the wood.

I would make the stringers go all the way back to the transom, yes. I would however...ADD transom knees to either the inside of the stringers or the outside of the stringers to add strength. You can make a pattern and then glue them on (no screws), or screw it then remove screws when dry and fill with epoxy. Good Luck!

Patrick

 

[OhioLowell]

Re: The stRingers are out!

Thanks Patrick!

How tall should I plan on making the knees?

Also the epoxy has a 30min pot life. That being what it is, do you think that all of this work could realistically be done in one long Saturday? The work I'm talking about is: transom installation, stringer and knee installation.
I would think so long as all of the cutting is done, and all the material is in palce and ready to go in advance that the task wouldn't be too overwhelming. I wouldn't be doing all of this solo either, LOL! I'd probably have at least 2 other sets of hands.

Thanks for the kind words and the help!
Lowell

 

[Saskatoon2005]

Re: The stRingers are out!

You should be able to do it all, but remember one set of hands HAS to be able to take pictures of the progress....LOL! I will draw a picture of your knees. Actually instead of all that work...do you know where the old motor was attached to the transom? If you do, you would just make the knees shorter than where the motor hooks on. Otherwise you won't be able to mount your motor....LOL! No, I'll draw a picture....LOL! Good Luck...

Patrick Skinnider

 

[OhioLowell]

Re: The stRingers are out!

I meant to ask earlier. Is acetone an acceptable product to wipe everything down with before I start the layups? I've got a gollon of the stuff and would like to use it up. I think Nova mentioned laquer thinner, but will acetone work?

Thanks
Lowell

 

[ondarvr]

Re: The stRingers are out!

Acetone will work fine.

 

[OhioLowell]

Re: The stRingers are out!

THanks all for the info, again. I've been thinking about the stringers and have to expel the epoxy v/s poly demons from my own head.

I plan on bedding the new stringers to the hull with epoxy. After that I plan in building up my fillets with thickened poly resin then covering with glass and poly resin. The stringers will be sealed in poly before they go into the boat. That way I would have epxoy to poly bonding and poly to poly bonding not any poly to epoxy bonding. Does this approach sound ok to you guys?

Once I get this straight in my own head I'll feel much better about this part of the rebuild.

Thanks again!
Lowell

 

[ondarvr]

Re: The stRingers are out!

Why use any epoxy then? Bonding them to the hull with it won't add any strength.

 

[Mark42]

Re: The stRingers are out!

I would think for a small project (and small horse power) boat that staying with polyester or vinylester resin across the board would be the wisest choice. I can see fabricating entire pieces in poly and then epoxying them in place, but what you are doing now would be easier done by using one medium for the whole job. Mixing poly and epoxy may end up huring you in the future when you want to apply more poly but the part is epoxy.

Just my 2 ¢.

 

[OhioLowell]

Re: The stRingers are out!

Will just plain (slightly thickened) poly work for bonding my new stringers to the hull?

I guess I'm having a hard time with the mental road black over the epoxy is better than poly issue. I suppose each has it's own strengths and weaknesses. I just thought for "bonding" epoxy was the best choice. However, is poly will work the same in some situations then it does make sence to stay with only one medium. I just don't want to ARSSS anything up and have it give out after I'm done.

Thanks again!
Lowell

 

[Mark42]

Re: The stRingers are out!

Yes, use a thickener to turn resin into putty. Make the fillet, sand smooth, then apply a strip or two of glass on top to finish and strengthen.

 

[ondarvr]

Re: The stRingers are out!

For this application the only difference you will see between epoxy and polyester will be in your wallet. Epoxy is better at most things, but if you do a good job neither one will fail in your lifetime.