Montana RaceCraft 2012 projects

[bill boyes]

Yep, Been there done that. The Nida core is good material though. Lot of extra work. Tell your driver to push him her away from the table.

[seanp3]

Why is the Green Revolution in the background?

R-19

That's gunna be Kevin's boat next season

[seanp3]

Honeycomb needs an insert or it will colapse so the extra work and repair problems seem to be more work than it is worth on the small boats. When I was at Jones they used honeycomb aluminum with special inserts on the unlimiteds and lots of epoxy on every edge and joint.
Skeet

This is not allum core and is a tried material for this application. Should be fine. Looks good Mike!

[Rocket]

Montana RaceCraft 2012 projects

This is not allum core and is a tried material for this application. Should be fine. Looks good Mike!
__________________
Sean Byrne
169R 9R





I am very familiar with the material been using it for many years.

[G Stillwill]

I havent used the stuff but do use alot of foam core between plywood. Same problem I make inserts out of copper or aluminum tubing easy to make with just a tubing cutter.

[Raymond]

Nida-Core material

It’s very interesting to see you use the Nida-Core material. I am eager to learn and see more.

I am curious about cost as opposed to using a more traditional material.

This question may be answered by the previous inquiry but…at this point in the build why limit the use to just the side comings? Is it economically driven from a cost (materials and labor {which includes both engineering solutions and executing the build time}) benefit (strength to weight) analysis? Do you intend to use it in the bottom?

Tell us more about the working details and challenges you are experiencing and solutions you are employing. Please keep us posted as to the in-service performance of the boat over time.

What are your intentions regarding how you will edge fill?

This is good stuff.

Because you were surprised by the weight of this dimensional size, do you think you may go thinner on future uses?

[blueskyracer]

Raymond I will post more after breakfast but I will say what you should pay for a composite boat is still not enough!! And then there is the hair like slivers, its like working with house insulation!!!

[blueskyracer]

It’s very interesting to see you use the Nida-Core material. I am eager to learn and see more.

I am curious about cost as opposed to using a more traditional material.

This question may be answered by the previous inquiry but…at this point in the build why limit the use to just the side comings? Is it economically driven from a cost (materials and labor {which includes both engineering solutions and executing the build time}) benefit (strength to weight) analysis? Do you intend to use it in the bottom?

Tell us more about the working details and challenges you are experiencing and solutions you are employing. Please keep us posted as to the in-service performance of the boat over time.

What are your intentions regarding how you will edge fill?

This is good stuff.

Because you were surprised by the weight of this dimensional size, do you think you may go thinner on future uses?

Raymond to answer your first question I will say this is all based on a 4'x8' sheet.. Nida Core weighs 25 lbs a sheet same (10mm thick)as the Boeing Orange floor board.. The cost was $220 a sheet.. Okoume is 17 lbs for 5mm and cost $60..In MY OPINION if you use the Nida in a bigger class with no weight restriction then it is worth it but otherwise the only time it would be pratical is if you have a large person that want to run in a smaller class..Why spend $220+ for a sheet to save weight and then have to add 30LBS in Lead?? Like I said just my opinion..Plus you do what the customer wants and it does give the option of moving the weight around to improve performance and gives a stiffer structure.

Second question. Yes two of the boats will have partial Nida Core bottoms and one will have a all wood bottom. The all wood bottom will definately be the easiest..One of the reasons for a partial bottom is the Nida is so stiff that it will not comform to the "S" curve in the bottoms.. Also since coaming walls are doubled the Nida is a weight savings but in the bottom it causes a weight gain but is stiffer and will not warp slightly over time and cause cooling problems and need to be flat sanded..Now that I have worked with it some the stuff is ridged and could use less support material.. The draw back is figuring an attachement system that will not take for ever.. Also it took one and a half months to get so I am way behind so order early but it you dont have an order how can you justify having a few sheets around at $220+..Plus I like the wood better..Much safer to work with.. I already had one infected finger from the stuff getting under my skin at the fingernail..

Another thing we have figured out is only really needed 5mm thick stuff for the bottom and just use the 10mm for the coaming walls.. Then we would save weight all around and still have a very ridgid boat

Last for filling the edge I am not sure about that either. Since the core is plastic at least it will not be effected by water but I can not remove a little with a chisle to add a wood strip and coat over with a epoxy filler mix so that is another problem to address.. I guess one thing at a time.. At least when I am done I can say "been there and done that"

Like I said in another post paying $5000-$7000 for a composite boat is justified but you cant sell them at that price..

Hope this helps folks

[bill boyes]

Nida Core also makes an outer ply of wood.

[blueskyracer]

Figured out the insert idea.. Very simple and easy.. Dan it is your idea just needs to cure for a day.. My idea failed.. We are putting pieces together now so I feel better..

[blueskyracer]

I will post one more set of pictures shortly and then per customer request till the bottoms are done and the boats are flipped over we will be moving to the "Black Hole".. For those of you that have ever worked for Boeing you will know what that means..

[Rocket]

Montana RaceCraft 2012 projects

What kind/material of insert did you finally decide on??

[blueskyracer]

All three boats should be turned over Monday if I can come up with the help needed.. Due to some new things on the new models I cannot show a close up till after Monday.. Top Secret you know.. The bottoms are finished enough to go testing now.

[seanp3]

All three boats should be turned over Monday if I can come up with the help needed.. Due to some new things on the new models I cannot show a close up till after Monday.. Top Secret you know.. The bottoms are finished enough to go testing now.

Lookin good

[blueskyracer]

now have one boat turned over.. By the profile can you tell who this boat is for???