Whats the story on these things? Had a guy call me yesterday looking for some info but i'm pretty limited on these things. What kind of power can they handle? Can they be modded to handle more? Parts available? He had an associate that picked up a boat with 900+ HP and a blown SP drive and was looking at options. Unfortunately i dont think there are many in this case. Says he found a guy that has a built SP drive for sale ($10K) that will handle the HP but i am skeptical of any ability to do anything to these drives over how they were originally. I told him to turn down the boost and go have fun otherwise go easy on it, there really is no sugar coating this scenario. Its in a 28 Profile cat with a single, i also suggested if he was gonna do anything save a few more bucks and swap in a SSM5 or Arneson or ??? . . . . ..


So, anyone have any experience with these?

People swear by them. If he wants a spare i know a guy near me just replaced his transom on a supe and has whole SP setup. I think cheap...apparently somebody resurrected the company and is supplying parts.

Google sternpower , Wells Maine .

http://www.sternpowr.com/
There's the link to their site. Had Stern Powr drive on an old Cheetah 24/7 back in the day. Had a single BBC in it that was fairly well built, and never broke the drive.

http://www.sternpowr.com/

I've seen 850-900HP thru them on a single 28' Back in the day.

man . . .sure aint much on that site . . . good to know there is a parts source tho.

archer marine has a few for sale I was researching them the guy on the web site I forget his name at stern power was very informative talked for half hour about them most parts are available thru him except the cases are hard to come by he can rebuild the internals they still do a lot of work for the military with there normal style drives so I guessing they will be around for a while he swears they are as strong as a speedmasters not sure if he meant a 6 or 8 but def the 3 4 5 drives

This is a Cheetah 24/7 BBC turbo w/ stern powr drive.

[ATTACH=CONFIG]536230[/ATTACH]

Had them on my Sonic. MX-7. Good thing is, you don't need any special tools to work on them or set them up. Very basic. I had a manual that I gave with the boat. It was straight forward. At the time, not sure if it is still true, it was difficult to get props. That was the only problem I remember. They are beefy. I only had 500 HP to them at the time and they do require a transmission.

Dave I had them on my Klem Gems back in the 70's they started out being used on the River Queen houseboats, the drives were made by Dana. The early sternpowr drivers were mechanical shift that could not be shifted much over 800rpms or they self destruct & they had the club foot lower just like the Dana drive. The later ones [SP & SSP] had B&W transmissions & were strong for there time, the SP had just a nose cone as SSP was there speed master type drive. . Also they had no power trim untill I showed Klem how to put trim on them. his version was ruff. I also then made the pattern for a nose cone & made some aluminum ones up @ Wolverine casting but once again Klem gave them to Sternpowr & that became the SP drive. The Sp drives later used a Merc Trs props & the SSP drive used a Merc # 3 props. The drivers were easy to work on & the bearings can be found @ any industrial supply house. Klems sold many of his boats with these early drives on then with his crude handy work & then mated used car engines to them. There was also a BX version as well and looks good but I know nothing about them. Mark