Replacement machine heads for Spectrum basses?

I was wondering if anyone has replaced the standard versions with more modern ones? I was looking at a set of Schaller M4 90s but I don't know if they're a possible solution. Any help much appreciated!

The OEM machines were most probably Gotoh, so that would be my first stop…

By "more modern" what do mean exactly Jerry?
Are the originals failing?

Corsair's got the right idea if you need replacements, Gotoh!

if you want exact replacements (in black), there are some NOS available on ebay. located in Tennessee

>>Franklin Guitar Works<<

Barry wrote:By "more modern" what do mean exactly Jerry?
Are the originals failing?

Corsair's got the right idea if you need replacements, Gotoh!

 
I meant 'modern' essentially - I was wondering if newer types that look similar were a good fit, and with no need to drill out the post holes in the head. I do have one original set but they are very battered and the posts have been worn away quite a lot over time.

Jerry_B wrote:... no need to drill out the post holes in the head. I do have one original set but they are very battered and the posts have been worn away quite a lot over time.

Jerry, if the holes are badly worn that indicates that the tuners were perhaps not maintained properly 'snugged up'. Over time the movement has caused uneven compression resulting in an oval hole instead of a round one.

Your choices are, find a suitable replacement set, or keep the originals. In either case you must repair the damaged holes.
That means either plugging and re-drilling if you decide to keep the originals, or carefully reaming the current holes to a larger dia. to suit.

You could also consider reaming the holes larger then using a suitable ferrule to regain the original dia. so you can reinstall the Westone tuners.

Forcing a larger diameter shaft into the out-of-round holes will result in an uneven fit and possibly split the wood. Continuing to use the originals will only make the situation worse.

Good luck!

The holes are ok, it's just the posts on the old tuners that have seen better days I do own a Hipshot D-Tuner and that would definitely require one hole to be enlarged for it to fit a DX neck.

Then your job is easier if the head stock wood is OK!

Wow, I haven't come across tuner shafts being worn before. Gears yes, shafts nope.

You must be a monster player my friend!