beckerkumm
Hot Rolled
- Joined
- Aug 5, 2014
- Location
- Wisconsin Rapids WI
I'm taking delivery shortly of a CVA lathe. Very similar to the 10EE early round dial but with a twelve speed gearbox, 6 in open belt, and 6 in a 13.5+- ratio backgear. The top end of this machine is 2220 and the machine could be ordered in a higher 3100 rpm configuration.
Does anyone know if the beds are the same ? I'm missing a few parts and watching for 10ee parts vs only CVA opens up the choices. The round dial change gears match the CVA. The CVA is an early MK1.5 with the clutch lever on the spindle. I think they were only made in 1951 following a few years of roundhead that looked like the Monarch. In 1952 they went to a different electric switch system and ditched the clutch which is what you see on most CVA machines.
Depending on the motor, I may install a 5 hp TENV Black Max 5 hp that I picked up NOS cheap. I understand the spindle can handle additional speed but wondering if the gearbox can as well. I will probably use a vfd and dial in a close speed gear and go 30 hz over or under, mainly over to fill the gaps. I'd like opinions as to whether overspeeding the gearbox could cause problems. I have a similar set up on my Smart Brown 1024 and am spoiled with the variable drive.
EDIT; The gearbox question doesn't make sense when comparing to Monarch as they didn't use the same system ( DUH )so any information regarding the CVA gearbox capability is the better ask. Since the lathe was designed for 50 hz power and a 1450 rpm motor vs 1750, speeding the gearbox even more might not be ideal vs swapping the pulley from the gearbox to the spindle. Dave
Does anyone know if the beds are the same ? I'm missing a few parts and watching for 10ee parts vs only CVA opens up the choices. The round dial change gears match the CVA. The CVA is an early MK1.5 with the clutch lever on the spindle. I think they were only made in 1951 following a few years of roundhead that looked like the Monarch. In 1952 they went to a different electric switch system and ditched the clutch which is what you see on most CVA machines.
Depending on the motor, I may install a 5 hp TENV Black Max 5 hp that I picked up NOS cheap. I understand the spindle can handle additional speed but wondering if the gearbox can as well. I will probably use a vfd and dial in a close speed gear and go 30 hz over or under, mainly over to fill the gaps. I'd like opinions as to whether overspeeding the gearbox could cause problems. I have a similar set up on my Smart Brown 1024 and am spoiled with the variable drive.
EDIT; The gearbox question doesn't make sense when comparing to Monarch as they didn't use the same system ( DUH )so any information regarding the CVA gearbox capability is the better ask. Since the lathe was designed for 50 hz power and a 1450 rpm motor vs 1750, speeding the gearbox even more might not be ideal vs swapping the pulley from the gearbox to the spindle. Dave