Rickresource Rickenbacker Forum

prowla wrote:Whereabouts are you located, OP?
You might also consider, if you do replace the Grovers, possibly recouping your costs by selling them on (I recently missed out on a set for £50).

Wow. I paid more for one.

prowla wrote: If I were replacing the Grovers, I would likely go for Ric's own open tuners; they are not too expensive (£75 UK).

An early '70s 4001 with Grovers has a slightly different tuner placement to a 4001 fitted with Klusons, or a 4003 (or variant) with the RIC branded Schallers (or the C64 vintage style Gotohs). The larger footprint of the Kluson/Schaller/Gotoh tuner will result in the base plate hanging off the edge of the head of the bass for the "A"-string tuner on the inside of the cresting wave on these basses. A tuner with a smaller footprint is required.

antipodean wrote:

prowla wrote: If I were replacing the Grovers, I would likely go for Ric's own open tuners; they are not too expensive (£75 UK).

An early '70s 4001 with Grovers has a slightly different tuner placement to a 4001 fitted with Klusons, or a 4003 (or variant) with the RIC branded Schallers (or the C64 vintage style Gotohs). The larger footprint of the Kluson/Schaller/Gotoh tuner will result in the base plate hanging off the edge of the head of the bass for the "A"-string tuner on the inside of the cresting wave on these basses. A tuner with a smaller footprint is required.

The bass in question appears to have the lowered A tuner placement, so a Kluson ( or Schaller/Rickenbacker) would fit.
The Grover ferrule has a slightly larger OD than the plastic Rick/Kluson ferrule which has a larger OD than the 60's Kluson and modern Gotoh repro.
Having said that, I think the Schaller M4 would fit w/out reaming the peg hole, but you'd need to drill one screw hole in the back of the peghead per tuner...