Disadvantage would be lower efficiency over a prop, especially at relatively low speeds and attaching two engines to a single jet pump sounds like...
2.2 pounds per kg. If you wanna do conversions no brain is required only google. "5mm in inches" as a search term without the quotes for...
With epoxy it is the hardener that is more sensitizing than the resin. The hardener amines can vary greatly in volatility between formulations...
Using your petrol out board for planning and an electic trolling motor instead of a elabourate augur design will be seriously cheaper, lighter,...
Ah i was seeing that as resin as in the resin component also mix ratios was related to filler. I shouldn't skim in the morning :o
Not true, improper mix ratios with epoxy give a weaker product. 5% by weight off on one of the components is usually fine, with greater variations...
Epoxy should adhere nicely to most wood types. You should overcoat your fibreglass job with a pigmented topcoat or clear coat with UV absorbers...
Well yes will need that extra power with that much weight! plan on running over rocks at 30mph? Should be really sturdy.
So a flat bottom garvey or jon boat at 15', wouldn't that motor be rather overpowered?, would think a 25hp outboard would get you to a nice speed....
Generally with a polyurethane foam you will get a higher density next to container walls where it gets cooled, not really a bad thing. Also poly...
Test is lap shear on hoop pine strips, have done straight immersion and immersion/dry cycling. Generally you get failure at about 60% of the...
You can repackage as long as you take care to exclude moisture which includes the moisture in air. Putting in the freezer is not needed unless the...
Thats a foam with a bit over 3% solids, which is very low density.
35 kg/m3 means what it says. If the resin has a SG of 1.1 then 4 lt = 4.4 kg 4.4 kg / 35 kg/m3 = 0.1257 m3 which is about 1/8 th of a m3 per...
If you have access to an innert gas like nitrogen, flush the fuel tank with that before sealing. Otherwise ground the fuel tank or hull.
Epoxy doesn't stick well to cured polyurethane, polyurethane sticks well to cured epoxy. First case you have a physical bond only, second case...
Well it's fairly simple really. The faster you go the harder you hit the water. The harder you hit the water the stronger your hull needs to be...
