Realistic working load capacity for Vixen APZ?

[jcj380]

Wondering what a realistic load capy. is for a Vixen APZ.  My biggest scope is an ST120 refractor that weighs about 5.5 kg with 8x50 finder and eyepiece.  I'm thinking of upgrading to a Crayford focuser which I believe will add another half kilo or so.

I currently have a Twilight 1 which seems maxed out with the 120 and a SkyWatcher AZ5 which handles it a bit better, but it's also close to max load, I think.

I have a Manfrotto 475B and a stock TW1 tripod.  I'd prefer not to use a counterweight, but if it's a necessity, so be it.

Thanks!

 

[banjaxed]

Vixen rate the mount at 8 kg but that is the maximum.