New Falco Build

[vanko]

Hi Folks,
I am new here and have begun a new build with a Falco HX 500 Conversion kit and a Soma Double Cross Disk Frame. There is an issue that I would like clarified, on both the review of the HX 500 motor on ElectricBikeReview as well as Bike_on's user experience as they refer to using a cassette on the motor. It is my understanding that only a freewheel option is available at this time and a cassette (being the spline cogs that index to a free hub built into the wheel that Shimano developed to replace the freewheel ) is being used describe what is actually a freewheel. This is important as the two items are different in the availability and quality of parts along with the shifters and derailleurs to make them work. I have run into some difficulty using a Sunrace
9 speed 11-32t freewheel on the HX 500 motor as the freewheel's non moving flange makes slight contact with the Falco hub causing the freewheel to stick. I can shim it but this will move the freewheel outboard enough to make the derailleur impossible to engage the high speed cogs. Any help in this matter would be appreciated.

 

[vanko]

First, apologies to Bike-On, after rereading your post you made it clear that it was a threaded on Freewheel. I am curious to what brand you used for what follows is what I discovered removing and reinstalling the Sunrace brand, also if there was a difference on you Falco hub design.
After attempting to shim the Sunrace I found out that you cannot do it from the inboard face of the Falco Hub but only on the most outboard face, please see pics also include is a pic of the build so far