View Full Version : Velvet Drive Fluid Problem

Apatski S&S 77
06-14-2011, 12:25 AM
I have a 1977 S&S with over 2000 hours that I have owned since 1978 with 65 hours. Have had no problems with the transmission, C71 1to1, until this weekend. I was crusing about 30 mph and the engine rpm started to rise and the boat slowed down. Turned the engine off and found that the trans had lost it's fluid. The fluid is in the bottom of the boat and I can find no place that it came out?? The dipstick was tight and no evidence of broken hoses, leaks, and no oil around the breather?? When the problem started the shifter would not go back into neutral but then loosened up and now it moves freely. I am stuck, does anyone have a possible cause and solution??

06-14-2011, 01:52 AM
It is possible that the seal between the tranny and the flywheel is damaged.Or at the shaft side.
The best thing you can do is remove the tranny and refresh al the gasket and maybe the clutch now.

06-14-2011, 08:31 AM
Welcome to Team Talk.

After cleaning out the bilge, I would refill the trans. and run it again to see where the leak is. Should you need to pull it to replace seals, it may be worth rebuilding as long as it is out already.

I'm kind of partial to '77's. How about posting a few pictures?

Apatski S&S 77
06-15-2011, 12:16 AM
I purchased the boat in 1978 and haven't let it rest since. It pulled in tournaments, shows, and practice for the OK Skiers Water Ski Team. The team was based in Tulsa, OK and had our practice site on Ft. Gibson Lake in NE Oklahoma. Our claim to fame was many trophies at tournaments in the South Central Region and to do a ski show in conjunction with the Okla State Univ Water Ski Team for the Mercury Corp. in Stillwater, OK. on lake Carl Blackwell. I am a bit ashamed of the condition I let the boat come to but.. Last year I did an exterior restoration and am looking forward to complete interior later this year. Here are some before and after pics of the Red, White and Blue 1977 Stars & Stripes!!!

Apatski S&S 77
06-15-2011, 12:17 AM
Some More Pics of Restoration

Apatski S&S 77
06-15-2011, 12:24 AM
I failed to say thanks for the info!!! I will keep updating as I find the problem.

Apatski S&S 77
06-19-2011, 01:35 AM
Hello out there. Went back to the lake, filled the trans, put it in forward on the trailer and the fluid just runs out. The leak must be the front seal. Is there an online R & R & R procedure for velvet drive on the net?? Where is the best place to purchase the rebuild kit?
This could have happened at the end of last year...

Did you check the pics of the restoration??

What do you think?

06-19-2011, 07:00 AM
velvet drive manual


06-19-2011, 11:17 AM
Restoration pics look great!

06-19-2011, 11:46 AM
Great restoration!

06-19-2011, 09:30 PM
First off great job on the restoration. I replaced my front seal myself last year...technically not a very hard job at all. Once you have the velvet drive manual it will show you just how easily accessable the front seal is once you have pulled the tranny. It only has four bolts on the front pump and once you pop it off the seal is right there. Just coat the seal with fresh fluid and then re-install the pump and seal and then just re-install the tranny. There was a great thread on here a while back that had start to finish pictures. The shop wanted $600 to do it and you can do it yourself for less that $15.....you do the math on that one. Good luck to you and if you have any problems let me know and I can give you the more specific details.