5 replies to this topic

[vena]

We are thinking of buying a speedster and were wondering the fuel economy of the speedster 200 with twin 185 supercharger as well as the overall performance and satisfaction level of current owners. We presently own a challenger 4 stroke.

[thumper]

my 215 rotax burns about 8-10 litres an hour for skiing (30 ish mph)and thrashing around (60ish mph) so i guess if you double if for twin 185 and add a little say for the extra weight you would be close say 25 l/hr - maybe more????
hopefully somebody else will chime in with some figures for a twin speedster.

[stevenh]

my 215 rotax burns about 8-10 litres an hour for skiing (30 ish mph)and thrashing around (60ish mph) so i guess if you double if for twin 185 and add a little say for the extra weight you would be close say 25 l/hr - maybe more????
hopefully somebody else will chime in with some figures for a twin speedster.

The twin 155's use 22GPH worse case (wide open, ~55MPH) and 10GPH at the most efficient crusing speed of 32MPH or so (as stated on BoatTest.com). I would expect the 185's go up from there.

I found it interesting that the 18' C-180 with the 215HP SCIC engine had almost exactly the economy numbers on BoatTest as the S200 with TWO 155HP engines on a 20' boat. This was at best crusing speed and WOT.

Steve

[thumper]

boattest seem to put some strange figures in their test results1

[SeaOneEighty]

I found it interesting that the 18' C-180 with the 215HP SCIC engine had almost exactly the economy numbers on BoatTest as the S200 with TWO 155HP engines on a 20' boat.  This was at best crusing speed and WOT.
Steve

And that is what led me to ask, 'Did they test a new boat?' Not only was the fuel consumption relatively high, but top speed was low. Were they testing a boat that was still in the break-in period and running with a richer mixture and reduced rev limits?

My C180 runs significantly faster than shown in the tests(GPS verified) and compared to other boats, does not seem to be any sort of a gas guzzler.

[thumper]

compare notes with yuji as he has has the same model - although he has modified his somewhat as he was unhappy with performance.