1994 Chaparral 230 rebuild thread

[Axkiker]

Re: 1994 Chaparral 230 rebuild thread

We do need to see some pictures of what you are doing . . .

I have been repairing the structure of my Formula and I can say what you are seeing in your boat is not typical of other boats. The tabbing on my boat is a fairly thick biaxial cloth thoroughly wetted.

Maybe what im pulling up is not tabbing... I could be calling it something wrong. Whatever it is its the stuff that was used to hold the stringers to the hull.

It looks that they installed the bulkheads and stringers then used maybe a chopper gun to spray everything down with glass.. Maybe ????? Or installed the bulkheads and stringers and used CSM to hold it to the hull.

Im pretty sure no biax was used to hold the stringers down. The stuff im pulling up is between the stringers and seems to run up the sides of the stringers. When I pull up what remains after the stringers are gone I get down to what appears to be something like biax cloth that was used to build the main hull.

Even in the rear bilge area it appears they used something similar to buildup around the motor mounts. The floor section is very thick and I almost wanna say was applied by a chopper gun.

Ill see if I can get some pics at some point so you can see.

 

[Woodonglass]

Re: 1994 Chaparral 230 rebuild thread

We've been asking for pics for some time. I've revisited every page of your thread and the one and only pic you've posted shows no evidence of a chopper gun application. You really need to post more pics if you want us to be able to give proper advice on how to effect proper repairs. the old saying that a Picture is worth a 1,000 words is very true!!!

 

[bigdirty]

Re: 1994 Chaparral 230 rebuild thread

I will say, I have seen what you are talking about in my current boat in a few places, and others ive worked on (bayliner.. ahem..) somewhat more so.. lots of glass fibers, with no resin at all, and very minimal adhesion to hull/stringers. In the case of my current boat, it seams they simply didn't put enough tabbing in, or do it thick enough, and it cracked.. hence De-laminated stringers that (apparently) my particular boat is known to have had problems with.. I agree with wood however, we need more pics man!

 

[GT1000000]

Re: 1994 Chaparral 230 rebuild thread

We NEED pics!!!
Or else the Mob is going to begin gathering...

Happy Friday!

 

[Axkiker]

Re: 1994 Chaparral 230 rebuild thread

We NEED pics!!!
Or else the Mob is going to begin gathering...

Happy Friday!

LOL ill try to get pics this weekend. Its tough sometimes trying to get pics when you and everything else is covered in fiberglass dust.

 

[Axkiker]

Re: 1994 Chaparral 230 rebuild thread

Deleted

 

[Axkiker]

Re: 1994 Chaparral 230 rebuild thread

Okay, well you wanted pics.. I have pics..






You can see from the pics there are numerous fibers that have never been saturated with glass. I couldnt get a pic of me actually prying up the sheets so most pics are after it was removed and what fibers were left.

 

[bigdirty]

Re: 1994 Chaparral 230 rebuild thread

yup, looks familiar to me.. the grinding takes care of most of it in my exp. just take it back to solid resin/mating and put the new stuff in and she'll be better than when new

 

[tpenfield]

Re: 1994 Chaparral 230 rebuild thread

Looks like a CSM layer that is separating as you pull up the tabbing. Are you prying up the tabbing? Usually you would want to grind into the tabbing

 

[Axkiker]

Re: 1994 Chaparral 230 rebuild thread

Looks like a CSM layer that is separating as you pull up the tabbing. Are you prying up the tabbing? Usually you would want to grind into the tabbing

What do you mean by tabbing??? From what I have found everything is CSM.... but maybe im missing something.

 

[tpenfield]

Re: 1994 Chaparral 230 rebuild thread

Tabbing is the cloth later(s) that connect the stringers and bulkheads to the hull.

If that is not the case as to what we are seeing, then the boat might have been made with chopper guns, possibly. However, I did not think that Chaparral used chopper guns.

Otherwise, we could be looking at a hull that was not made properly. :noidea:

More pictures with good light and more angles would be better to see.

 

[Axkiker]

Re: 1994 Chaparral 230 rebuild thread

Tabbing is the cloth later(s) that connect the stringers and bulkheads to the hull.

If that is not the case as to what we are seeing, then the boat might have been made with chopper guns, possibly. However, I did not think that Chaparral used chopper guns.

Otherwise, we could be looking at a hull that was not made properly. :noidea:

More pictures with good light and more angles would be better to see.

I really think it was from chopper guns but I could be wrong... Ill try to get some better pics now that its actually sunny out today.

 

[Axkiker]

Re: 1994 Chaparral 230 rebuild thread

More pics in sunlight

 

[Axkiker]

Re: 1994 Chaparral 230 rebuild thread

 

[tpenfield]

Re: 1994 Chaparral 230 rebuild thread

My thoughts are:

(1) chopper gun without rolling it down . . . or . . . (2) CSM layers that were not wetted and the next layer was wetted, but the resin did not make its way through to the 'dry' layer.

This is a Chaparral ??? I thought better of them and more along the line of using Woven Roving on their hulls.

Anyway, the question is now what condition is the hull really in considering those issues . . . and . . . what should be done about it???

My ideas would be to add a layer (or 2) of 24 oz WR to the hull in those areas . . . or the entire hull as needed. Then do your structural work. My concern is that if the hull is too thin/weak it will tend to 'shear' at the stringers by the forces of water against it and essentially break through.

Now there is no doubt . . . you need to foam the structure of that boat with 4 lb/cubic foot foam.

 

[Axkiker]

Re: 1994 Chaparral 230 rebuild thread

My thoughts are:

(1) chopper gun without rolling it down . . . or . . . (2) CSM layers that were not wetted and the next layer was wetted, but the resin did not make its way through to the 'dry' layer.

This is a Chaparral ??? I thought better of them and more along the line of using Woven Roving on their hulls.

Anyway, the question is now what condition is the hull really in considering those issues . . . and . . . what should be done about it???

My ideas would be to add a layer (or 2) of 24 oz WR to the hull in those areas . . . or the entire hull as needed. Then do your structural work. My concern is that if the hull is too thin/weak it will tend to 'shear' at the stringers by the forces of water against it and essentially break through.

Now there is no doubt . . . you need to foam the structure of that boat with 4 lb/cubic foot foam.

Well this only seems to be what was used to hold the stringers in. In places where there was no tabbing I can see that the hull was made with WR. Based on not seeing the first stress cracks or cracking I dont think the hull is an issue. I could be wrong but im not particularly worried about it.

Now as far as the stringers go I will most definitely be using 1708 to hold everything in and replacing the crappy matting im pulling up. I figure if it went 20 years without issue being this crappy my fixes should allow it to go 40.

I agree about the build quality of Chaparral. When I purchased this boat I was under the impression I was not getting a bottom dollar boat.

 

[tpenfield]

Re: 1994 Chaparral 230 rebuild thread

OK, so you are saying that the stringers were 'tabbed' in with CSM and no a biaxial or WR colth? I am curious about in some of you pictures there is the glass strand areas right next to seemingly solid areas. That is what is confusing. Were the stringers only tabbed to the hull in certain places along their length versus completely along their length??

I always thought that Chaparrals were built pretty much like Formulas (i.e. WR hull and biaxial holding in the stringers, etc.) . . maybe not. I was considering getting a Chaparral when I bought my first powerboat.

 

[tpenfield]

Re: 1994 Chaparral 230 rebuild thread

Got any pictures of the entire structure ??? it would be good to see how things were put together.

 

[Axkiker]

Re: 1994 Chaparral 230 rebuild thread

OK, so you are saying that the stringers were 'tabbed' in with CSM and no a biaxial or WR colth? I am curious about in some of you pictures there is the glass strand areas right next to seemingly solid areas. That is what is confusing. Were the stringers only tabbed to the hull in certain places along their length versus completely along their length??

I always thought that Chaparrals were built pretty much like Formulas (i.e. WR hull and biaxial holding in the stringers, etc.) . . maybe not. I was considering getting a Chaparral when I bought my first powerboat.

Yup it appears the stringers were only tabbed in with CSM. I cant seem to find any biax. If its in there im not finding it.

There are 4 stringers running the length of the boat.. (Or most of the length). The 2 closest to the center of the boat were glassed in on both sides with what I believe is CSM. The 2 outermost were only glassed in on one side. (side facing the other stringer) So its like they decided to kill two birds with one stone by glassing 2 stringers at one time with either a big piece of mat or chopper gun. The outermost stringer only got one face glassed. This is why you see the outermost section of fiberglass hull appears to be solid and the area right next to it looks hairy. The solid looking section never got any tabs applied to it.

 

[Axkiker]

Re: 1994 Chaparral 230 rebuild thread

Got any pictures of the entire structure ??? it would be good to see how things were put together.

I dont off hand but ill get some tomorrow.