bob_t

Take a look at Powerboat's online review of the 2001 29 Fever with 575SCI. In the performance summary it lists gps: 81, radar: 83, speedometer: 88 On our 35 twin step, liquid filled speedo was rather accurate with drives trimmed around 2-3, and about up to 65 mph. Once you got the drives around 4-5, the speedo read 90 and gps read 84 (good reason to leave gps home). On both of our 29's, the liquid filled speedo is accurate between ~ 30 - 50 mph, but is about 4-6 happy over 70 mph. It seems that the further you trim the drive, the more "off" the speedo is. On our 292 Formula that had twin 6.2's and no mechanical trim indicators , the gaffrig pitot speedo was off by 8 mph when trimmed out at top speed. 70 mph on gps showed 77 - 78, bouncing on the speedo

jmeng

My dad's 35 Fountain had the only speedo that I've ever seen read SLOW. At cruising speeds (maybe 35 - 60) it read about 5 mph slower than the gps. At top end it was very close, maybe only 1 or 2 mph happy. This was with a 2000 Classic.

Hey Bob, how you liking the new Fountain so far?

Slumpbuster

I will take a GPS out next time I go on that 02' T/S 35 fountain lightning with 500hp's all stock.

The over/under is set at 83.

What do you take. Also include (read in Alec Trebec voice) whats your wager.

For one beer at LOTTO, if i go, I take over.

Purple Stuff, any comment you've ridden in that boat. With Texoma closed it may be a while before it's out.