Jobo expert drum max volume

[Scott Kathe]

JOBO lists the min/max volume for the 3006 Expert drum at 210ml - 342ml and the 3010 drum at 210ml - 330ml. According to Kodak I need 62.5ml D76 per sheet of 4x5 or 125ml D76 (1:1) per sheet of 4x5. That means I can do only 5 sheets in the 3006 or 3010 drum with D76 at full strength or 2 sheets when D76 is diluted 1:1. That doesn't make any sense to me. Are the volumes listed on the JOBO site the minimum volumes required? If so what are the maximum volumes?

Scott

[SamReeves]

I think the maximum volume would be determined by what your motor can spin. For instance the CPP/CPA's can only handle about a 1L of solution.

[Jim Noel]

I use 700 ml when developing 5 sheets of 8x10 in a Jobo Expert Drum. Any more loads the motor too heavily.

[Scott Kathe]

I would be hand rolling on a roller base IF I end up with one of the Expert drums.

Scott

[Chuck Pere]

I have used 1500ml with no problems on a Unicolor base.

[MenacingTourist]

I use 1000cc for each of my drums. It's all good.

[Scott Kathe]

The Jobo stuff seems pretty expensive but I was in my darkroom/bathroom the other night and when I went to set my timer after all my film was in the water presoak the timer wouldn't work I was lucky that my wife was home to set our kitchen timer for me. I'd like to do some quality daylight processing (Jobo or Nikor tank) but the cost is really holding me back.

[Nick_3536]

You don't need to buy new. The tanks unless you drop them just keep working. I use my Jobo tanks on rollerbases . I'm not the only one.

[Ron Marshall]

For hand-rolling, with the drum horizontal, the max volume for the 3010 is about 900ml. Any more and some will slosh out.

I have occasionally corked the top with the stopper from the pump (plugging the hole in the stopper with a pen) and developed by semi-stand with very dilute developer.

[c.d.ewen]

The correct answer is.......16 Liters!

I regularly develop 2 12x20's in a 3063 drum, using 80ml of Rodinal in 16L, i.e., 1:200, with minimum agitation. Dump the liquid in, put a cork in the top, drop it on its side and roll it for a minute or so. Stand it up. Roll it again for a few seconds every half hour, then dump it after two hours. Works for me, but, then again, I can lift 16L.

Charley