
evm1024
New member
I've got a few things in the fire but this weekend I needed to just focus on something else. At the moment I'm out of lapping film so no more heads for a while.
Anyway to come to the point I had these 3 headstacks sitting arouund waiting for me to get to them to relap. Two from 388's and 1 from A br-20 with Timecode.
The 388 heads are a 2 head design (one rec/playback one erase) 8 tracks on 1/4" tape. One of the headstacks had been relapped by JRF in the past. It needed the least lapping to bring it up to snuff. The other had deeper wear but these heads appear to have a pretty deep gap so they could be relapped a few times. In any case I elected to take the minimum material off the heads.
The BR-20 with time code was not too bad to do. They took twice the time of the 388 heads due to my caution (Timecode heads are a little rare or expensive). They came out nice.
I elected to not do the erase heads. They are ferrite and glass for the BR and looked good. For the 388 they are ferrite and metal with just a little wear on the metal. Ferrite can get micro chips which are quite sharp and thus hard on tape. I was being cautious.
Here is a not so good photo....
Regards, Ethan
PS I ecpect the owner to chime in some time soon. We will see how long it takes him to read this and respond. The clock is ticking
Anyway to come to the point I had these 3 headstacks sitting arouund waiting for me to get to them to relap. Two from 388's and 1 from A br-20 with Timecode.
The 388 heads are a 2 head design (one rec/playback one erase) 8 tracks on 1/4" tape. One of the headstacks had been relapped by JRF in the past. It needed the least lapping to bring it up to snuff. The other had deeper wear but these heads appear to have a pretty deep gap so they could be relapped a few times. In any case I elected to take the minimum material off the heads.
The BR-20 with time code was not too bad to do. They took twice the time of the 388 heads due to my caution (Timecode heads are a little rare or expensive). They came out nice.
I elected to not do the erase heads. They are ferrite and glass for the BR and looked good. For the 388 they are ferrite and metal with just a little wear on the metal. Ferrite can get micro chips which are quite sharp and thus hard on tape. I was being cautious.
Here is a not so good photo....
Regards, Ethan
PS I ecpect the owner to chime in some time soon. We will see how long it takes him to read this and respond. The clock is ticking
