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Old 10-21-2017, 06:31 AM   #1 (permalink)
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Default EVO to Standard boom

I'm slowly getting parts to convert to a standard leggero and remove some of the heavier and expensive EVO parts when the time comes to replace them.

My question is has anyone used the EVO servo mount with the standard boom and guide for control rod. The EVO servo mounts 90 degree different than the standard servo and not sure if the standard boom control rod guide has the correct geometry since the servo radius is up and down instead of side to side.

Thanks, some pics would be nice.

This info may also be helpful when the new nitro boom comes out as well as it will also require the EVO mount as well.
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Old 10-21-2017, 07:13 AM   #2 (permalink)
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Originally Posted by tshelby73 View Post
I'm slowly getting parts to convert to a standard leggero and remove some of the heavier and expensive EVO parts when the time comes to replace them.

My question is has anyone used the EVO servo mount with the standard boom and guide for control rod. The EVO servo mounts 90 degree different than the standard servo and not sure if the standard boom control rod guide has the correct geometry since the servo radius is up and down instead of side to side.

Thanks, some pics would be nice.

This info may also be helpful when the new nitro boom comes out as well as it will also require the EVO mount as well.
If you really want to ditch the Evo mount to move the servo to the tail. I would buy the none Evo tail servo mount. Since the Evo has servo in the frame the the none Evo it on the tail you will need a new control rod anyway.

And the point about the radial movement up down to side to side. Your geometry teacher would hunt you down since it's radial to lateral the radi orientation doesn't matter for the lateral movement.
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Old 10-21-2017, 07:43 AM   #3 (permalink)
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If you really want to ditch the Evo mount to move the servo to the tail. I would buy the none Evo tail servo mount. Since the Evo has servo in the frame the the none Evo it on the tail you will need a new control rod anyway.



And the point about the radial movement up down to side to side. Your geometry teacher would hunt you down since it's radial to lateral the radi orientation doesn't matter for the lateral movement.


Iím wanting to possibly keep the evo mount.

As far as geometry I may be using the wrong wording.

The evo mounts the servo arm when centered it faces up and at the ends of the travel the ball link moves up and down as well as forward and back the the rod support is notched for this movement.

The standard boom mount has the servo arm facing outwards to the left instead of up when centered and at the ends of travel it moves left and right instead of up and down. Iím not sure how the rod support is notched on the standard boom but I assume it notched for left and right movement.

I guess my question is regarding the control rod support. Iím not sure if the evo one will be tight on a non evo boom. If is tight no further questions if not will the standard rod support have the right slotting for the way the servo moves.


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Old 10-21-2017, 09:57 AM   #4 (permalink)
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Yes, it should work. With the standard rod guide, the rod may have to flex a little at certain points of travel, but I actually prefer it this way. There is less rattling noise during hard cyclic at lower headspeed. I'm currently using a custom made servo mount which puts the tail servo in the same location as the evo mount. I cut it out of a carbon plate and bolted it to the frame, then spaced the servo inward with plastic spacers. I prefer the look of the heli with the tail servo in this location and also wanted to save a little weight. If you are concerned with the rod bending, use the evo rod guide. If it doesn't fit tightly on the standard boom, use a wrap of black electrical tape underneath it
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Old 10-22-2017, 06:45 PM   #5 (permalink)
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Yes, it should work. With the standard rod guide, the rod may have to flex a little at certain points of travel, but I actually prefer it this way. There is less rattling noise during hard cyclic at lower headspeed. I'm currently using a custom made servo mount which puts the tail servo in the same location as the evo mount. I cut it out of a carbon plate and bolted it to the frame, then spaced the servo inward with plastic spacers. I prefer the look of the heli with the tail servo in this location and also wanted to save a little weight. If you are concerned with the rod bending, use the evo rod guide. If it doesn't fit tightly on the standard boom, use a wrap of black electrical tape underneath it
Hi quinn,
this looks interesting. Are you able to provide pictures?

Paolo
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Old 02-21-2018, 10:15 AM   #6 (permalink)
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Ok so the evo guide is bigger than the standard so I ordered the standard one. I could wrap the boom and maybe make it work but I would have to do quite a few wraps.


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