Great video. The only way I have ever set my mid stick zero pitch adjustment is via your first method. The only difference is that early on, I found that my driver shafts didn't always fit exactly into the blade bolt holes without a small amount of slop. I was balancing a prop one day with the Dubro prop balancer and got to thinking that if the cones accurately centered a prop on the shaft for balancing, then they would accurately center the rod in the blade grip, and that method has worked perfectly for me without any need to adjust individual blades from flight tests. Our eyes are amazing in that they can so accurately discern if the Dubro shaft is parallel with the main shaft. Everything that is assembled has some manufacturing tolerance stackup, but the good old MK 2 eyeball doesn't vary at all from build to build. Also, the only time I use the digital pitch gauge is to set the collective and cyclic throws, as their values are automatically referenced from the C/L of the main shaft rather than from having to insure your heli is perfectly level. You are the first person to do a video showing this method. I have made several posts showing photos of the method, but never actually done a video of this method. Thanks.
To further clarify this point, it is actually best to use an appropriate diameter long bolt rather than an hex driver. I used a hex driver in the video because I did not have a long M5 size bolt for the video. The hex driver I used in the video was mainly to visualize the concept. The hex driver fits too loosely with too much play within the blade grip bolt hole. You really want a "long" bolt of appropriate diameter for the blade grip hole.
I just lay an old Align pitch rod across the saddle of the head and look across the top of the blade mounted pitch gauge to set my zero. I don't know why someone doesn't make something that just slips in that slot for ease in zeroing like this.
I read and re-read what you stated above a few times, but I am having a difficult time understanding what you mean. I am not familiar with the "old Align pitch rod" or what you mean by the "saddle of the head". What is the "slot" you are referring?
Great video. The only way I have ever set my mid stick zero pitch adjustment is via your first method. The only difference is that early on, I found that my driver shafts didn't always fit exactly into the blade bolt holes without a small amount of slop. I was balancing a prop one day with the Dubro prop balancer and got to thinking that if the cones accurately centered a prop on the shaft for balancing, then they would accurately center the rod in the blade grip, and that method has worked perfectly for me without any need to adjust individual blades from flight tests. Our eyes are amazing in that they can so accurately discern if the Dubro shaft is parallel with the main shaft. Everything that is assembled has some manufacturing tolerance stackup, but the good old MK 2 eyeball doesn't vary at all from build to build. Also, the only time I use the digital pitch gauge is to set the collective and cyclic throws, as their values are automatically referenced from the C/L of the main shaft rather than from having to insure your heli is perfectly level.
You are the first person to do a video showing this method. I have made several posts showing photos of the method, but never actually done a video of this method. Thanks.
Nice video John. I never thought of using the allen driver through the blade grip bolt hole to align the grip with the main shaft.
To further clarify this point, it is actually best to use an appropriate diameter long bolt rather than an hex driver. I used a hex driver in the video because I did not have a long M5 size bolt for the video. The hex driver I used in the video was mainly to visualize the concept. The hex driver fits too loosely with too much play within the blade grip bolt hole. You really want a "long" bolt of appropriate diameter for the blade grip hole.
Nicely done John. Can you add chapters/bookmarks to make it easier to jump forward/backwards and find sections?
I added "timed chapters" based on your recommendation. Let me know if I should add any particular timed chapter. Thank you for the suggestion.
@@johnahamelv Perfect. It's really good for SEO when Google indexes it too.
@@rchelicopter I had to look up SEO (search engine optimization). I am an older guy still learning the technology. 😁
John would you have the 3d file for the gauge to share? TIA
I just added weblinks to the related Tinkercad page
@@johnahamelv Hi John, those links are not working / not available
@@gerrykeaveney1657 I believe I fixed it. Tinkercad defaulted the objects I designed to "Private". I just made them "Public".
I just lay an old Align pitch rod across the saddle of the head and look across the top of the blade mounted pitch gauge to set my zero. I don't know why someone doesn't make something that just slips in that slot for ease in zeroing like this.
I read and re-read what you stated above a few times, but I am having a difficult time understanding what you mean. I am not familiar with the "old Align pitch rod" or what you mean by the "saddle of the head". What is the "slot" you are referring?