speed

[boatman cmbc]

whats the best speed ever got from sv27?

[Doby]

In a set up you can actually control,,,or just in a straight line????

[m4a1usr]

You mean whats the official speed record an SV27 has achieved? I think the racers at Valdosta set it at 49 mph. I seem to remember that number. Some folks claim to have achieved some very high speeds. Like over 60mph! I cant get mine that fast. And mine is 100% SAW. 1512/1.5D on 3S with a CC240. And I have plenty of unused power. Its just the hull becomes very unstable at high speeds and wont stay on the water. It will blow over almost every time.

John

[boatman cmbc]

speed

thats what i thought ihave heard insaine claims of 50+ iknew that was very tall talk. its im possible to get much over 40-45 and still drive. i race mine every month and i am trying to take out a delta force knock off its proving to be very hard. i cant out turn him. ican get speed but not turning. can anyone help in this dept.

[Fluid]

Every hull has its speed limit, adding more power doesn't mean it will go any faster with reliability. The SV27 was designed for speeds in the 30s but can go a little faster. The root cause is too much lift and too short length. You can add weight at the CG, up to a pound to keep the boat on the water by balancing the lift forces with gravity. But eventually the boat becomes so heavy that it will not corner well. The way to beat the knock-off DF is to get a real DF.

Some claims of GPS speeds over 50 mph are likely true. There is a huge difference between a GPS speed (where the boat only achieved the top speed for a few feet) and an official SAW record (where two consecutive passes over 330 feet long have to be recorded). The latter is far harder to do than it would appear to the uninitiated.



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[BakedMopar]

thats what i thought ihave heard insaine claims of 50+ iknew that was very tall talk. its im possible to get much over 40-45 and still drive. i race mine every month and i am trying to take out a delta force knock off its proving to be very hard. i cant out turn him. ican get speed but not turning. can anyone help in this dept.

Sorry to say but the sv just can't run with the DF. Even the clones corner as if it's on rails. Fqdawld has a 25" clone and I can't run with him. The Sv is a great funboat not raceboat.

[wizard122]

46.3 mph

Hi had had some fun running 46 mph a few weeks ago. I know it's a little loose but thats the way i wanted to run that day it was a blast check it out.

[boatman cmbc]

speed

what have you done to your boat too get that speed?

[wizard122]

Check out my posts

Check out my other posts I have lots of photos and set up tips.

[Doug Smock]

You mean whats the official speed record an SV27 has achieved? I think the racers at Valdosta set it at 49 mph. I seem to remember that number. Some folks claim to have achieved some very high speeds. Like over 60mph! I cant get mine that fast. And mine is 100% SAW. 1512/1.5D on 3S with a CC240. And I have plenty of unused power. Its just the hull becomes very unstable at high speeds and wont stay on the water. It will blow over almost every time.

John

Good memory John! That was Ole Reed Eagle, he fell just short of the 50mph mark.

There were quite a few SVs that took a beating that weekend, good fun watching those guys go at it!!

Doug

[boatman cmbc]

speed

doug do they race sv27s somewhere other than the cmbc?

[Doug Smock]

doug do they race sv27s somewhere other than the cmbc?

The Florida Wave Blasters race stock amd modified SV classes. There may be others but I'm not aware of them.

We had the Fastest SV 27 competition at a SAWs event at Blue Lake in Valdosta Ga. a few years ago. That is the event John was refering to.

Doug

[boatman cmbc]

speed

i have the fastest sv in my club but it took a lot of $ to get it there. do you know if the widow maker 2900kv motor can handle 6s lipo power? how much can bl motors relley handle? how much is to much.

[BakedMopar]

This is a 6s run. Was the first time on 6s so i used the smallest prop I had that day. Its really not that much faster than 4s with a highly modded prop with that setup.

http://www.vimeo.com/8009081

[Fluid]

...do you know if the widow maker 2900kv motor can handle 6s lipo power? how much can bl motors relley handle? how much is to much.

Any 2900 Kv motor on 6S is too much, even in a gear box. Most bearings won't handle much more than 50,000 rpm, but the small props we use don't stay in the water very long so efficiency is poor. Any time Kv times voltage exceeds 40,000 rpm you will likely not go any faster. That rpm is SAW-only speed with no other practical application.

The problem with the SV is the same with any model - it has a hull-limited top speed and even unlimited power will not push the boat faster. The boat has to stay on the water and the prop has to stay in full contact with the water to achieve top speed. The SV has too much lift over 50 mph to stay stable. You can add weight to help offset the lift. but that only helps a little. If you cannot get there with a 2400 Kv motor on 4S, don't waste your money on higher voltage and more expensive motors. Get a more appropriate model like a Titan 40 or DF33.



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