Why do some Floyd's have the long allen bolts sticking out the back of the guitar and others have a deep body recess for the allen bolts to drop down in????
I think it's about bridge height and neck angle.
Yes?
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There is also this "non fine tuner" tremView attachment 5399
Cheers
Here's the big "hole" I was talking about....
View attachment 5401
And no big hole here....
View attachment 5402
I see. There are different models of Floyds. Some have the string clamp screws lower than others, requiring more of a recess. Then, there is the matter of the neck angle. A flatter angle is more likely to require a recess.
A quick tip if you do end up using a Floyd Rose, the stock saddle radius is 12" without the pre installed shim, 10" with. Shims with a thicknes of 0.2mm are available in 12 packs. Its advisable to shim the saddles to suit the neck radius, makes it much nicer to play. There's a chart showing the amount of shims to install for different neck radii on the FR site. Nuts are a bit of a compromise, only the R3 has a 12" radius with the rest 10". Luckily my Jackson's radius starts at 12" (R3 nut). Cheers
Ok...thanks, Ivan...so on a custom Stratocaster Floyd build, I need to use either 10" or 12" fretboard radius???
I know you asked Ivan, but I'll throw in my two cents, also.
The question is more a matter of the feel you want. The Floyd can be shimmed for what you want to have. But, as the typical Strat radius is 9.5" and the typical Gibson radius is 12", if you set the Floyd for 10", it'll feel more like a Strat. If you set it for 12", it'll feel more like a Gibson. Your choice.

As Smitty says, the saddles can be shimmed to suit any radius at all. The reason I looked to shimming them was the Jackson's 12-16" compound radius in reality requires a radius of between 18 & 19" at the bridge. A 12" radius bridge meant the G & D strings especially were higher off the fretboard than ideal down where you want them flatter. So one 0.2mm shim under the A & B, three (0.6mm) under both E's make the radius 19". Actually, 0.5mm under the E's would be better & some people use automotive feeler guages to make the correct sized shims out of but I didn't bother. I haven't seen any stock humbuckers with adjustable poles on both coils but aftermarket I have. Vineham offer hot humbuckers with socket head (hex) poles on both coils to name one. Cheers

Here's how I am requesting my Floyd be mounted....my pickups will be mounted like this as well...except on a pickguard....