Eddie, et al,
I have tried to remain silent but I can't resist any longer. I have to "get my oar in the water".
You can classify the Jabsco Pump with whatever heading you want but the facts are that there have been almost NO failures of this pump. It is a low pressure, circulation pump with ceramic seals and uses centrifugal technology (the same as a standard automobile water pump).
No one knows this but I have been working with the Product Manager at Jabsco to trial a new pump that is a good application for the Boss Hoss. Our existing OEM Jabsco pumps will pump 15 GPM, free flow and have a cast bronze pump impeller and pump housing.
The new pump I have been testing has a stainless steel pump housing and impeller. The impeller is machined for better flow. And the chamber has been redesigned with an elliptical shape (like an automotive water pump) for better flow. The 12 Volt electric motor has also been completely redesigned. The new pump flows 26 GPM, free flow. While it is true this pump is not designed to be submerged, it is water resistant and is perfectly suited to the Boss Hoss application.
It is essentially a "bolt in" replacement for the existing pump. It uses the same 3/4" NPT female inlet / outlet in the same configuration as our original pump. The mounting pad has slightly different dimensions but still has four slots with rubber grommets and the pump can be mounted to the original water pump pad with slightly longer bolts and a little bit of encouragement.
The pump is quieter, pumps more water and still draws 10 amps under load (the same as the original pump) and the motor is shorter.
While I have this pump installed on my 2003, 502 and I have made additional modifications to the cooling system, it definitely cools the engine another 5 to 10 degrees depending on ambient conditions.
This pump is now available from Jabsco through any of its many distributors. Its part number is 50830-0012. If anyone wants to purchase one and is having trouble locating a supplier, there is a distributor here in Tampa who will ship anywhere.
I plan to document fully my modifications to the 502 cooling system in the near future (either in a Boss Hoss Country Article or on the Forum boards). I have made significant progress and my Trike is very livable here in Florida.
Neil Weber
Phone: 352-429-4907
email:
[email protected]