hull extension in progress with pics

[Robj]

Re: hull extension in progress with picks

Re: hull extension in progress with picks

Not sure how you are going to wrap the stringer, but if you plan on wrapping it with glass, I would run a router with a round over bit over the top so it will be easier to get the glass to wrap around. That is what I did, but my stringers were about 1.25 inches thick.

Have a great day,

Rob.

 

[oops!]

Re: hull extension in progress with picks

Re: hull extension in progress with picks

a considerable amount of work was done on the boat in this session....

one of the things i wanted to do was fully speed dry the new exterior grade plywood....(my guys cut up all the pt for the strings)

in order to speed dry the wood...it should be cut and shaped..(less wood to dry)

so we had to cut the deck...(sole floor)

once we got the beam cut...we layed the ply next to the knees...and marked the knees....then we cut the knees out

using a grinder....we shaved the ply to match the slope of the deck...the grinder makes quick work of this job

as you can see...quite a bit was removed for a good hull joint

using the same process...the rest of the peices were cut..

(that guy in the pic is quite a guy... just turned 20...hes been framing houses since he was 12..he is just about to take over the family business...a respectable framing company...when he isnt framing...he's working with me doing deleveries or on the road doing matress sales)

once the majority of the sole was cut, i had notch the stringers to take the under deck support frames

this was done with a circ saw to cut the depth...and then the jig saw to cut the width cuts....

these frames are cut every 4 feet on center...starting at the stern...
this will provide a good backing to screw the deck to.....

i will not be screwing these frames in to the top of the stringers....in stead..i will be glassing them in

 

[oops!]

Re: hull extension in progress with picks

Re: hull extension in progress with picks

Not sure how you are going to wrap the stringer, but if you plan on wrapping it with glass, I would run a router with a round over bit over the top so it will be easier to get the glass to wrap around. That is what I did, but my stringers were about 1.25 inches thick.

Have a great day,

Rob.

ive rounded the strings with the grinder...but at only 3/4 inches thick it will be a real trick.....im going to try some samples tommorow...but worst case senerio....i might just capp the strings....glass doesnt like to go around corners

 

[Robj]

Re: hull extension in progress with picks

Re: hull extension in progress with picks

My sole is glued and screwed to the stringers, like it was originally. Used 5200 and ss deck screws, it isn't going anywhere. You can probably seal the tops of the ply just by putting a layer or two of matt onto it. That should be able to conform to the radius.

Have a great day,

Rob.

 

[oops!]

Re: hull extension in progress with picks

Re: hull extension in progress with picks

the next thing i had to do was make the engine mount section and finish the bilge....my bilge was a two step bilge......

deck height...then a drop of 2 ins for the six inch motor mount housing. then into the bilge.....

so i needed to cut the motor mount stringers...and add two 6 inch wide stops for the correct bilge shape

this is a good shot of the peices i cut...(the light colored small peices)
i had to angle them to the shape of the hull

it was time to add some glass...but the two new peices i cut were not resin encased..... and i didnt want to wait the full hour to coat them three times at 20 minit intervals each coat.... i needed a creative solution...

i just let them soak in the resin till i was ready to glass...!

i pre glassed the majority of the stringers. but it was getting late and i had to work at 10 am so i called it quits for the night....

when i walked out side... i noticed i was feeling really weird...and the air smelled really strange....then i realized my resporator was not functioning right and i was feeling the affects of the fumes..

glass fumes can really sneak up on you... i waited 10 minits out side till my head cleared before i left.

it was 2 am when i left the shop......

more tommorow...

cheers
oops

 

[oops!]

Re: hull extension in progress with picks

Re: hull extension in progress with picks

You can probably seal the tops of the ply just by putting a layer or two of matt onto it. That should be able to conform to the radius.

Have a great day,

Rob.

i might have to do that ... but its not my first choice as the majority of the stregnth comes from the glass on the width of the top of the stringer...like an i beam. so ive gotta think my way around this one... big air pockets are not allowed on the top of the stringers

 

[Robj]

Re: hull extension in progress with picks

Re: hull extension in progress with picks

That ply that you are using looks like it is not PT. In that case I think it is kiln dried and is good to go. It should already be dry enough for the glass. If in doubt, buy a cheap wood moisture meter and check it. It should be less that 10% moisture content. The resistance type meters work OK for those types of readings. They don't work well when the wood is saturated, but in this case yours is not.

Have a great day,

Rob.

 

[oops!]

Re: hull extension in progress with picks

Re: hull extension in progress with picks

rob just saw the share a proj.....(nice rig btw..)

i think i like the concept... but still dont fully understand how it is set up....

your saying the angle iron is attached to the sides of the beefed strings...and the mount sits on the iron?....the tubing you used is for height?

is that correct?...goin back to see more

 

[markedman]

Re: hull extension in progress with picks

Re: hull extension in progress with picks

Incredible project. Where do you find the time?

More incredible is you have the time to review and post comments on others projects too.

Appreciate your input on my Inky Dinky little boat repair.

You know if you gave up the Hockey nonsence you'd have more time for the boat.

BTW got some of my own pics up .. FINALLY.

Good luck with the boat (from one of the few normal people in Edmonton, thats me) The Hockey nuts in the family wish you luck too ( the abnormal ones ) lol

 

[drewmitch44]

Re: hull extension in progress with picks

Re: hull extension in progress with picks

But you say they are abnormal but i bet they are asleep at 3 in the morn. LOL im up too lol just kidding! LOL

 

[Robj]

Re: hull extension in progress with picks

Re: hull extension in progress with picks

Here is a picture I took this morning. You are right, the aluminum block was just to get the right height. Hopefully it is attached.

Have a great day,

Rob.

 

[oops!]

Re: hull extension in progress with picks

Re: hull extension in progress with picks

rob.....

wow.....

let me think on that one.....huge stress for three bolts and stringers...you are 1 and 1/2 strings right?....or did you sister another section on to the bolt hole area giving you 2 1/4 ins ?

have you noticed any stringer bowing?...inward?

thanks for the pics

 

[oops!]

Re: hull extension in progress with picks

Re: hull extension in progress with picks

Incredible project. Where do you find the time?

More incredible is you have the time to review and post comments on others projects too.

thanks jasper ave crusier

i work at my store during the day...thats when i post on projects....(in between coustomers and fixing washer and dryers) then after i go to the boat at 6pm

i let the glass decide when i leave

cheers
oops

 

[Robj]

Re: hull extension in progress with picks

Re: hull extension in progress with picks

The load isn't that great. There are three pieces of 5/8 ply, laminated together with glass, and there is a smaller 12 inch piece where the mount is. Those 7/16 bolts are plenty IMO. Remember it is only a 4 banger, but I have seen V8's done the same way. Could use bigger bolts if required, but in my case this is enough. There is also plenty of glass on those stringers, matt and woven roving.

The lateral forces, ie the stringer wanting to bend inwards are taken up by that huge bulkhead, it is 2 pieces of 3/4 inch ply laminated. There is no way those stringers will be bowing inward. If I were to do it again, would do it the same way. There is plenty of surface area on the stringers to take up the load, probably even more than the original wooden block. I would ask around and get another opinion, but in my case I did not want to go back to that darn block. You could beef up the stringers and use 4 - 1/2 inch bolts per mount, and with the glass that would be plenty strong IMO. But then I do not know what your mounting arrangement/requirements are.

Have a great day,

Rob.

 

[oops!]

Re: hull extension in progress with picks

Re: hull extension in progress with picks

rob

if i used that same arrangement with a v8 there would be no problem with glassing in a "knee" by the mount to stop the inward bow of any stringer...but with 2 1/4 ins of string and glass...youd need a wrecking ball to drop on it before string failure...


p.s....tiger woods is in a real battle to come back

 

[Robj]

Re: hull extension in progress with picks

Re: hull extension in progress with picks

On my shareaproject, not sure if you noticed, but there is a 1/8 inch SS plate that the bolts are welded to. This not only ties them together better, but it also prevents them from turning if I need to remove the mount, because the backside of the stringer is under the deck and filled with foam. Ask your contact at Svfara or however you spell it for his opinion. I think you could beef up the stringers and use the same type of set-up.

Have a great day,

Rob.

 

[oops!]

Re: hull extension in progress with picks

Re: hull extension in progress with picks

actually i loved that plate you made.....it solved a multitude of issues

 

[Coors]

Re: hull extension in progress with picks

Re: hull extension in progress with picks

On my shareaproject, not sure if you noticed, but there is a 1/8 inch SS plate that the bolts are welded to. This not only ties them together better, but it also prevents them from turning if I need to remove the mount, because the backside of the stringer is under the deck and filled with foam. Ask your contact at Svfara or however you spell it for his opinion. I think you could beef up the stringers and use the same type of set-up.

Have a great day,

Rob.

don't you still have a problem of water intrusion with the bolts? or did you 4200 them?

 

[jcsercsa]

Re: hull extension in progress with picks

Re: hull extension in progress with picks

Hay buddie , she is really looking good now !!! keep up the good work !!!! hay how did your hockey team do , I forgot to ask ?? John

 

[Robj]

Re: hull extension in progress with picks

Re: hull extension in progress with picks

don't you still have a problem of water intrusion with the bolts? or did you 4200 them?

Hopefully not. There is plenty of 4200 or might have even used 5200 on them. I used the stuff as if it were free!

Have a great day,

Rob.