Exploded or 3D Drawings

[mikeno]

Without infringing on Bob's copyrights are there any CAD experts in the group that have generated exploded views or 3D drawings of the BH? I've read engineering drawings through much of my career but I'm "spatially dysfunctional" (seriously) when it comes to visualizing how all the pieces go together. I can eventually do it but it takes an inordinate amount of time unless I have an exploded view and then it's an "ah hah!" moment. I've done some CAD work but not qualified to tackle anything like this. I'd gladly pay a reasonable amount but only within the copyright provisions. Thoughts? Anyone else interested? Mike BearHawk #1250 KLXT

[geraldmorrissey]

I started mocking up the Patrol on CATIA. Then I realized it was a waste of time. The time spent modeling was better used building the plane. If you study the drawings, all the 3D will be in your head. I'll bet someone took it further then me though and you may find what your looking for.
Good Luck
Gerry
Patrol #30 wings

[nuggets]

http://www.cartesiantube.com/Kit%20PDF/39051.bearhawk.fuselage.isobom.pdf#view=Fit

3d view from there kit library , any good ??

[Glenn Patterson]

Hi Mike,

I worked in engineering all my life and started drafting as a high school shop option decades ago. I am one of the lucky ones that can look at the drawings and visualize a project no matter the scale of the project. I understand spatial challenged as a technical person that had to interpret the drawings for management, dept heads,operators, accountants etc to seek approvals for the project. I occasionally used chalk to draw full size layouts of equipment on the plant floors to assist with the visualization.

One god send of the internet is the vast amount of information and pictures available. Collect all the visual aids that you can.

We personally have all Eric Newtons manuals & 2 editions of Russ Erb's manuaI. I would not recommend one over the other but recommend that everyone have both Russ & Eric's information. Put all the Beartracks in a binder or PDF them. We have all the EAA Bingelis manuals and whatever else we can put our hands on. Spending on reference saves money as it will show how to do it correct and eliminates experimenting. We built one rib to learn on & hung it on the wall. Then we built all the ribs without any errors. Learning from the reference texts saves time & money so they pay for themselves.

Find all the builders sites that have their build progress documented. There are a few that have excellent information & photos on the public domain. Photos are invaluable. Set up a builder information file on your computer to catalog information & pages broken down into categories. Each folder is like a file drawer & you can put sub folders in a folder. I have accumulated tons of information over the years on building, vendors, electronics etc.

The nice thing with having Eric & Russ manuals is they both have great technical detail and both use different methods. Besides gleening information from online builder logs there are also the Bearhawk Aircraft (Avipro) manuals for quick builder aids. Filling ones head from these sources will give enough detail to be able to make decisions that work for the builder. We took in all the information & often charted our own course to get what we wanted but not at the cost of quality. Each builder can safely put his own preferences into his Bearhawk and you will see that from visiting the various logs. We used different construction methods for installing the wing skins that were successful for us from the hindsight gathered from learning the other builder methods. For example we laid masking tape on the middle ribs, laid out the rivet holes & drilled 1/16th in pilot holes for each rivet location. We used a cordless Dremel with a right angle drill head to back drill through the rib into the skin with a 1/16" bit then followed up with a 3/32 from the outside & a clecoe. A tad slower but 100% of the rivets are dead center of the ribs. The skins over the nose ribs were done per the manuals. The manuals show how & what it should be when it is done. You can adjust the processes to get the same result.

There used to be software that allowed a person to take the information from a website and put it on a computer so it could be viewed offline. It is one method of collecting a lot of information with a minimum of headaches. The second advantage is if you have a copy then if the website disappears the information is not lost to you. Another method is to use a PDF printer like Bullzip that allows you to print a web page(s) so that you can create an electronic page(s) & file it the computer filing system. Set up the computer files thinking of the main folder as the file cabinet, then have the next folder categories that become the file cabinet drawers within the main folder. then put sub folders in the drawer to break down details so you can find them. When you PDF a file give it a decent name that will help one to find the information easily within the system. The same applies to any information that is to be saved. If the name is undecipherable then it is no good to you.

An example of a "file drawer" could be Interior, Sub folders in the drawer could be Seats, Seat, Carpets, Headliners, Kick Panels, Baggage Department Bulkheads.
Then the Seats could have the folders for Fabrics, Foam, Seatbelts, Frames, Adjusters. That way any information that comes up then you can research and add to your file or favorites. For example there are several sources of cushion foam & fabrics. You should set up the favorites in the same manner with a system that emulates a file cabinet, drawers, main folder with secondaries. If you use the same filing system in your document files as the favorites then all both systems follows the same logic.

This will allow you to capture as much pictoral & written information as practical in a system that will support your build. In my early years we had a large vendors library of hundreds of catalogs that were indexed by vendor & products along with an indexed file cabinet for brochures. As time moved on then I used the same cataloging and hoarding mentality to organize any information that may be of value one day. For example there have been different sources for items or methods over time for building a Bearhawk & I have stored them away.

Hopefully this approach to gathering and storing information will aid in visualizing the construction process.

All the best
Glenn
BH727

[bestbearhawk1231]

Hi Mike, I personally had trouble visualizing the cap strip layout on the spars. After much asking around and several "you are going to build a plane but can't figure that out" looks while at airventure a couple years back, I decided to wait on those and keep studying them. Slowly it started coming together and now I am waiting on the cash for the capstrip material order to start on them. Even a couple years later, I still have enough work to keep busy for a while before I have to place that order. If there is one part that is not coming to you right now, build something else and come back to it.

[mswain]

this isn't my work, but I think this guy has done a superb job creating some great models.

http://sdlan.org/?page_id=285&mstate=2

[mikeno]

@nuggets - yes, exactly what I need for the 4place Bearhawk Mike BearHawk #1250 - wings KLXT