Hynautic helm pump questions

Chum Bucket · Post by **Chum Bucket** » Sun Apr 08, 2018 12:26 pm

Seastar still manufactures Hynautic helm pumps, the H21 and H25 models. After checking twice, I have a H26 pump. Seastar does not even show a H26. I only have the FB helm and I do not know what cylinder I have on the other end. My buddy gave me an H25 pump and was hoping to add a cockpit station. Does anyone know the difference is between the 2 models? I'm assuming they have different displacements. What helm pumps do you guys have and if you have dual stations? If you've added a 2nd station, what did you use and how'd the project turn out? I'll be calling around tomorrow, but wanted some info from the B33 clan. Thanks!

Chum Bucket · Post by **Chum Bucket** » Sun Apr 08, 2018 12:29 pm

FYI, the H25 came from a 2 helm boat. I would be curious if the pump can be converted to the other?

Chum Bucket · Post by **Chum Bucket** » Sun Apr 08, 2018 1:17 pm

Answered my own question, guess they still make the H26. https://www.seatechmarineproducts.com/h ... -pump.html

Chum Bucket · Post by **Chum Bucket** » Thu Apr 12, 2018 3:26 pm

A few thoughts to close out this thread. The H25 has a larger fluid capacity meaning less turns lock to lock. The email I received said it should be about 3.5 turns L to L. The H26 (I assume most of us have this one) is about 5 turns L to L so I'm going to swap the 2 pumps and use the H26 in the future cockpit station. Still in the planning/contemplation stage. Having a little more responsive steering sounds good to me. Swap out pumps, have the original rebuilt, flush the system with Aeroshell 41, and move on to other upgrades. Sometimes a big CC with outboards just seems so much easier to maintain. [8D]

asher · Post by **asher** » Thu Apr 12, 2018 11:21 pm

Another option if you have an autopilot would be to install a second autopilot controller at your lower station instead of a full helm. That way you only have to run a few wires versus a few hoses, helm install, purging etc. But having a steering wheel at your new station would obviously be far superior. Just giving a suggestion for an easier install.