Hi Doug,
I'm using the ammeter approach. I don't know the max load, but it sends the ammeter full scale at each end of the range. You quickly learn to see it coming and release the switch at the right point. I believe the breaker is 15 amps. I've only popped the breaker once. I think I got about 20 hrs on the first set of brushes. The second set are still in after a total of 70 hrs on the prop. They are getting close though - thanks for the reminder.

Last week I met a Mike Watson, who been using an IVO on a Franklin 6 powered Velocity for years. He showed me his new brush holder from IVO - it's transparent.  Cool - you can see the remaining brush length easily during preflight. I'm going to order one with the new brushes. Mike also has the constant speed unit from IVO and is quite happy with it. I find the manual adjustment easy to use and plan to stay with it.
Regards,
John

DLOMHEIM@aol.com wrote:

>I have the IVO Magnum in flight adjustable 3 blade prop with 45 to 105 inch pitch range. 

 

Chris:  Are you using an ammeter to set you pitch by chance?  If so how much of load is on it at fine vs. coarse pitch settings?  Also have you had to change out your brushes yet?  I am hearing we should expect to get about 15 hrs. on them before needing to change them out and wondered if your ground testing had validated that number yet...

 

Thanks for the information.

 

Doug Lomheim

RV-9A, 13B, FWF, IVO