I was testing my 7,5 today and after some mods I went from 71km/h to 75,1km/h.
Where are you guys in speed on the 7,5's
Where are you guys in speed on the 7,5's
SPEED
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 Fredde Cederberg |
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Posts: 409 (08/17/07 08:31:50) |
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Dave Marles |
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Posts: 943 (08/17/07 12:20:21) |
What is it I can smell?
Dave
Tuning software |
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Fredde Cederberg |
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Posts: 409 (08/17/07 12:53:45) |
Sorry to disapoint you Dave, this is no BS this time, the 7,5 is very fast now, I am about to do the same mods on the 3,5, hoping for about the same speed increase or even a few km/h will be good.
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BoBoKwok |
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Posts: 745 (08/17/07 17:22:09) |
I have not GPS my boats for many years but I knew 75,1km/h is very fast for a V7.5. What is the mods?
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Fredde Cederberg |
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Posts: 409 (08/17/07 21:55:00) |
 Bobo, I can't tell you that but what I can say is that I have gone from 40% nitro to 30%, that is a part of the answer
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BoBoKwok |
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Posts: 745 (08/17/07 23:26:24) |
I also can tell you that I have never use more than 25% nitro on my V7.5. That's mean I have plenty of space to run faster.
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Fredde Cederberg |
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Posts: 409 (08/18/07 12:48:28) |
Going to test the 3,5 tomorrow with the same mods as on the 7,5, will let you know tomorrow the results.
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Fredde Cederberg |
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Posts: 409 (08/19/07 07:48:20) |
Good results also in the 3,5, gained 2,6km/h and has more torque than before.
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BoBoKwok |
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Posts: 745 (08/19/07 17:34:18) |
you mean mod on hull or engine?
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Robert Mecdorf |
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Posts: 44 (08/20/07 06:01:24) |
Hi Freddy
How many speed have you got after mods in your 3,5 v? Robert |
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Fredde Cederberg |
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Posts: 409 (08/20/07 12:50:33) |
Well Bobo, I have not touch either the hull or the engine, hmm think about that
Robert, I was doing 62 in Malm in saltwater absolutely flat no waves. On the test yesterday the conditions was not good, flat water again and bad air. Same set up as in Malm and speed was 57,1km/h before the mods, after was 59,7km/h so if teoretical with the same conditions like in Malm it should be doing about 64km/h. I have seen very different speeds depending on the air quality. |
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Robert Mecdorf |
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Posts: 44 (08/20/07 14:56:24) |
Freddy you are right,
when I trained after WC Norwey in Poland I had 62-64 km/h in my 3,5 v but in Norway on WC only 60km/h  |
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Fredde Cederberg |
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Posts: 409 (08/23/07 13:11:03) |
So now it has been done also to my 15 and I started with 78,9km/h and after the mods it was 80,7km/h.
I could lean the engine a lot and had more torque so I could probably pull a bigger prop also. We have a race in the weekend so it will be nice to compare with the other guys to really see the difference in performance. |
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Robert Daniel |
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Posts: 216 (08/26/07 00:34:24) |
Quote: New super fuel perhaps? |
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Fredde Cederberg |
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Posts: 409 (08/28/07 12:03:16) |
Maybe
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alan whitaker |
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Posts: 227 (09/08/07 08:20:43) |
Hi Fredde.
How is your 35 for speed?? Alan |
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Fredde Cederberg |
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Posts: 409 (09/10/07 07:47:47) |
Never measured it but it is fast now after doing some mods to the hull and set the carb correct and using x470 propp.
It is for sure faster than the 15 boats. |
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Fredde Cederberg |
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Posts: 409 (10/02/07 11:42:35) |
64.4 km/h with Falcon 2 and CMB RSV 07 today, my team mate Mats Angseryd is going very fast now in the 3,5, he is using the same super fuel as me.
Conditions today was good, 11 degres, small waves on the water and almost no wind. |
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Robert Mecdorf |
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Posts: 44 (10/08/07 01:46:43) |
Fredde
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uros |
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Posts: 2 (11/27/08 23:40:09) |
Hello,
my friend also find out this secret and he had to put less nitromethan in the fuel to get beter speed. But he was haveing some other troubles with heating. But after 5min he just put 0,2L of water in to the fuel tank and mix it with fuel and then he run 7,5ccm boat with 75km/h with that fuel. :D:D
hehehehehehehehehe
Uros_S.
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Dave Marles |
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Posts: 876 (11/28/08 03:48:44) |
I'm too slow, I think I give up.
Dave
Tuning software |
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