Use these to automatically center the back bulkhead with the propeller hub and front spinner bolt holes during your spinner fitting preparations. Proceed as follows:. No need to use the front bulkhead for the initial fitting that follows; it will only be in the way. Now the back bulkhead is in perfect alignment with the propeller and you can begin cutting and fitting the spinner. First, position a square against the back bulkhead and the prop hub. Then, make a vertical reference mark on the flange of the back bulkhead.
Next, make an accurate template to use for cutting out the propeller hub opening in the spinner. Most any stiff material manila folder, aluminum flashing, etc. Refine it up by bridging the gaps with pieces of masking tape. Mark your template, "This Side Up. Establish a reference line anywhere on the spinner by drawing a short line up from its base using a square for alignment.
Align the reference lines on the bulkhead and the spinner. Then, position your template against the vertical line drawn on the spinner and trace the cutout outline onto the spinner. Measure around the base of the spinner to a point degrees opposite and trace the same outline on the opposite side of the spinner. Be sure to keep the same template face side up for both tracings.
Now, you are ready to cut out the spinner openings. Making the Blade Cutouts Clamp a short 2x4 to the end of your workbench as a support for the spinner while you are cutting the openings. Since your preliminary propeller hub cut-outs are undersized, it will not slide down very far before it hits on the propeller hub. Replace the spinner on the prop. Mark it again. Trim it again. Does the Front Bulkhead Fit? Now that the spinner shell fits perfectly, remove it and add the front bulkhead to your propeller jig assembly.
However, you will first have to cut away part of the flange on each side of the bulkhead to allow it to lay flush against the hub. Reassemble your jig assembly by placing the front bulkhead on top of the propeller and reinstalling the bolts to maintain alignment. But, how can you tell? But what if the spinner dome does slide down and fits perfectly flush with the back bulkhead? Does that mean the front bulkhead is contacting the spinner properly? Not really. Remove the front bulkhead and place a spacer washer over each propeller bolt hole.
Replace the front bulkhead over the washer spacers and reinstall the spinner dome. If the bottom rim of the spinner still fits flush with the back bulkhead, you know that the front bulkhead is still NOT contacting the spinner shell as it should.
Remove the spinner and front bulkhead again, and add another spacer washer all around. Measure the total thickness of the spacer washers used and you will know how much the front bulkhead must be moved forward. Otherwise, it might be better to obtain a larger diameter front bulkhead.
If this problem involves a fiberglass spinner, you can always lay up several layers of fiberglass strips around the inside of the spinner to obtain the correct fit. Front Bulkhead Modification Some RV-6 builders learned that when they replaced a wood propeller with a metal Sensenich prop, their spinner had to be replaced because the propeller blade openings were too big. They also discovered when fitting the new spinner the front bulkhead diameter was much too small to be used.
No replacement bulkhead was available or in the offing. What to do? The undersized front bulkhead would have to be moved forward almost an inch before it would contact the spinner shell.
Some bright soul figured that if he turned the front bulkhead over, it would almost fit. Now, it was slightly too big. The front bulkhead flange could be shrunk enough to fit perfectly. This was done in the best metal working tradition using a hammer and back up bucking bar.
Because the front bulkhead becomes hardened during its manufacture, it is a good idea to anneal it before you start banging on it to shrink its diameter. The annealing process is very simple. Use a lighted candle or acetylene torch to coat the bulkhead flange area with black soot. Then, with a Bunsen torch or welding torch adjusted to a normal flame, heat the bulkhead flange until the soot is all burned away.
Be very careful not to overheat and melt the aluminum by playing the torch too long in one spot. This leaves the aluminum perfectly annealed and easy to work with a hammer and a back up bucking bar.
Of course, the recontoured flange will not be wide enough for fasteners to be used in the front bulkhead. This is no problem as many builders prefer not to use screw fasteners in the front bulkhead, anyway.
Actually, the installation will now be stronger since parts of the forward facing flange do not have to be cut away to obtain the usual hub contact. Aligning the new spinner is easily done on the airplane proceeding as follows:. Install the back bulkhead, propeller, and front bulkhead on the engine using the correct propeller bolts properly torqued. Slip on the newly prepared spinner dome as far as it will go. Its rim should be parallel with the back bulkhead flange.
Lightly clamp the spinner in place using several Cleco type shoulder clamps, or small C-clamps. Rotate the propeller slowly with the nose of the spinner almost touching a pointer clamped to some kind of a stand as shown in photo. Once again, remove the spinner. This time so you can get the anchor nuts riveted on to complete the installation. In addition, the app has a content rating of Everyone, from which you can decide if it is suitable to install for family, kids, or adult users.
There are many free Android emulators available on the internet. However, emulators consume many system resources to emulate an OS and run apps on it. So it is advised that you check the minimum and required system requirements of an Android emulator before you download and install it on your PC. In addition, you can check the minimum system requirements of the emulator on the official website before installing it.
This way, you can avoid any system-related technical issues. Home Arcade Ultra Spinner. If you do not want to download the APK file, you can install Ultra Spinner PC by connecting your Google account with the emulator and downloading the app from the play store directly. Claw Stars PC v 0. Sharpshooter Blitz PC v 1. Fancade PC v 1. Geometry Jump 3D PC v 0. Granny 3-d PC v 3. Arcade Bowling Go 2 PC v 3.
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