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Building Tips and technical articles. => Building techniques => Topic started by: Larry Renger on December 15, 2010, 01:46:23 PM

Title: Thrustline alignment
Post by: Larry Renger on December 15, 2010, 01:46:23 PM

Here are a couple of photos of the setup I use to align my motor.  The model is leveled with a Robart gage, then the motor is set with the attached level.  Second photo is more detail on the opposite side of the level.

Title: Re: Thrustline alignment
Post by: Allan Perret on December 16, 2010, 08:19:43 AM

So what is your target for motor thrust line ?
Any up or down thrust ?

Title: Re: Thrustline alignment
Post by: Jim Oliver on December 16, 2010, 08:28:26 AM

Larry,
Do you make any compensation for the "droop" caused by the weight of the indicator?

Title: Re: Thrustline alignment
Post by: Larry Renger on December 16, 2010, 09:04:23 AM

I go for 0-0 thrustline, and the indicator is light plastic, so there is no discernable droop to worry about.

The level is just glued to a board, and several sizes of holes are drilled to accomodate different prop shaft sizes.  There are even smaller, lighter levels available and you could probably adapt a bubble level to the job.  Get creative!