Balsa Wood Boat Models 63,Wood Row Boat Diy 50,Ncert Book Questions For Class 10th One - Downloads 2021
Yesterday I downloaded your boat plan, PT model boat. It will be my first adventure in the world of model boats. I'm writing to ask a technical advice, if I may For balsa wood, what is the best thickness to use in modeling?
There are several factors that determine what balsa wood thickness to use. I built that kit many years ago and converted it to RC. The biggest flaw with the Lindberg kit as an RC model and all plastic kits I've seen converted is that they always seem to end up too heavy - especially top-heavy. As a result they handle poorly and look out of scale. With the Lindberg experience in mind, I put a great deal of emphasis in the design phase trying to keep the model light.
In addition, being a planing boat, any weight saved translates to higher speed and extended endurance, both of which is highly desirable. Some design decisions were also done to make the hull relatively easy and fast to build - such as the chine shelf construction etc. In hindsight, this was almost too thin. I have bumps and irregularities in the planking where the bulkheads are. These thicknesses are fairly typical for this size model. The PT is about inches about mm long.
Obviously a smaller boat can use thinner material, and vice versa. I wouldn't use balsa for a model over 48 inches about mm long. Simply because balsa tend not to last over time as well as more rugged hardwoods. Also, the cost is starting to shift in favor of common commercial materials, such as plywood etc. The hull is indeed light, but I don't think a slightly thicker balsa planking would have hurt too badly. I believe 2mm thick is available in Europe as well, and would make a good choice.
Density of the Balsa An important factor is the density of the balsa at hand - it can vary widely. I order my balsa online, which is not ideal. The best is if you can hand-pick what you need. It doesn't matter as much if you choose light or heavy - most important is that each sheet is even in texture and density and that all sheets used for the planking are reasonably close in density. So, if you choose lighter balsa, it's easy to justify using a thicker material without any gain in weight.
The added thickness will help achieve a smoother hull. As I order online I tend to buy several extra sheets just to compensate for the possibility that a few may be sub-par. Sealing the hull I sealed my model boat with tissue-and-dope. This is in old-school and time consuming, but probably the lightest way to seal the balsa.
Most people today probably use epoxy and light fiberglass. The result is stronger, but also heavier, in most cases. If using fiberglass, the thinner base material can be selected without much sacrifice in strength.
However, you're still stuck with the uneven surface. Some may suggest using Bondo or other filler to fix a bumpy hull. I would if weight was not an issue, such as with a tug boat or other displacing hull. With a planing boat, I'd rather live with the uneven hull, but optimize for performance.
Click here to add your own comments. Copyright Building-Model-Boats. Trademarks belong to their respective owners. It depends Best advise if you really don't know is to buy a few sheets of balsa from your local hobby or craft store and experiment. Balsa by: Lucky III I'm in the same predicament, as I am looking to build a tugboat hull, but have no experience in shaping balsa to fit the ribs. Comments for Balsa Wood Thickness Click here to add your own comments.
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