2nd Rudder vs a second set of trim tabs

[BillBessette]

After watching some videos of some of you guys tearring it up on 6s, it seems that handling definately becomes an issue.

Most of you seem to correct (The best you can) the problem, by using the extra set of trim pads.

If you subtract that added weight with a second rudder assy, I would think that would help (maybe even more) with the handling problem at high speeds. After all a offset rudder on just one side, certainly isn't the best situation for handling. An example would be the turning left issue and the chine problem. (Probably didn't spell that right).

I don't have a rudder in my hand to say how much it weighs, but moving the batteries forward a little, would definately offset the weight difference.

I know weight is an issue when your looking for speed, but a second rudder could allow more options in the power dept., if the handling improved significantly.

OK....so i'm over my head here....but have you guys discussed this already? (Did a search....) A second rudder would look awesome as well.

Thanks for listening!

[hog]

A second rudder has been discussed here, but to the best of my knowledge, no one has tried it yet.

hog

[67Mustang]

I think it would be pointless on a spartan. Mostly because when you are running at those 50+ Mph speeds the boat is airborne half the time since this hull can't handle the power. The second rudder will also create more drag. Unless a boat really needs twin rudders, they are just for show. And the spartan doesn't need them.

[BillBessette]

You don't think it would help it stop from shaking at higher speeds, or are you saying the boat won't handle over 50 no matter what?

[67Mustang]

You don't think it would help it stop from shaking at higher speeds, or are you saying the boat won't handle over 50 no matter what?

The boat won't handle 50 no matter what, unless maybe if the water is GLASS

[hog]

The boat won't handle 50 no matter what, unless maybe if the water is GLASS

There is no doubt the Spartan can be a hand full at speeds nearing the 50 mph range, but there are numerous video confirmations using GPS that show the boat is capable of 50+ mph if set up properly.

Yes, the water needs to be be near glass smooth, but that goes for any RC boat of similar size pushing 50 mph.

hog

[67Mustang]

There is no doubt the Spartan can be a hand full at speeds nearing the 50 mph range, but there are numerous video confirmations using GPS that show the boat is capable of 50+ mph if set up properly.

Yes, the water needs to be be near glass smooth, but that goes for any RC boat of similar size pushing 50 mph.

hog

Which Is why I think boats in this size range shouldn't be able to do 50+. Even if they do get that and the water is glass smooth, they still handle horribly and all you really end up doing is going back and fourth untill you flip the boat because it's too light.

[SHIFTT IX MR]

Step the hull. That will dig the front hull into the water more, and the steps in the hull will actually cause the boat to move faster and handle better.

[MCinab]

Shift, do you mind going into more detail what you mean here.

I too am having difficulty running on a 6s setup. Currently I basically only have cooling upgrades. Is it best to have the batteries placed as far back as possible? Im still experimenting with battery placement was well. Any help would be appreciated!!

[MAMBA2200]

The boat won't handle 50 no matter what, unless maybe if the water is GLASS

i disagree and here is the proof this is my old boat the water is not glass and its going way over 50mph and this was the first hull that handled worse than the new hull in my new build im gonna hit 75mph with a spartan and yes this was mine in this video

[BillBessette]

You can tell the boat is pushing it's limits as the bow lifts high several times and it's definately moving fast. The fact that you have GPS readings as well, sure does look legit to me. I hope you post your set-up in the "Set-Up Only" thread I just started.

[hog]

Shift, do you mind going into more detail what you mean here.

I too am having difficulty running on a 6s setup. Currently I basically only have cooling upgrades. Is it best to have the batteries placed as far back as possible? Im still experimenting with battery placement was well. Any help would be appreciated!!

Stepped hulls would need to be designed as such, I think it would be a pretty much impossible undertaking to modify the Spartan hull.

Stepped designs have been used on full sized boats to increase speed for many years. I think Regal was one of the first to market a stepped hull to the recreational boat market.

If I was able to post pics, I would put up my Genesis Cat hull, it uses a stepped design. Instead I will post a couple links for you with info and images.

http://www.soundingsonline.com/boat-...as-come-of-age
https://www.google.ca/search?q=stepp...w=1680&bih=812

hog

[SHIFTT IX MR]

HOG! You beat me to it. Stepping the Spartan hull is almost impossible unless you make a perfect mold of the current hull, modify it by stepping the hull correctly, the creating another mold for the finished product. Doesn't sound like much but this is a lot of work and not worth it. That is why I wonder why Traxxas - with all its resources- did not look to full scale racing boats for hull designs. I mean my center console open fisherman 34' Yellowfin has a stepped hull copied from a racing boat hull. The difference is merely the cap deck.

Stepped hulls would need to be designed as such, I think it would be a pretty much impossible undertaking to modify the Spartan hull.

Stepped designs have been used on full sized boats to increase speed for many years. I think Regal was one of the first to market a stepped hull to the recreational boat market.

If I was able to post pics, I would put up my Genesis Cat hull, it uses a stepped design. Instead I will post a couple links for you with info and images.

http://www.soundingsonline.com/boat-...as-come-of-age
https://www.google.ca/search?q=stepp...w=1680&bih=812

hog

So you're going to try for 75mph, or have??

i disagree and here is the proof this is my old boat the water is not glass and its going way over 50mph and this was the first hull that handled worse than the new hull in my new build im gonna hit 75mph with a spartan and yes this was mine in this video

[67Mustang]

i disagree and here is the proof this is my old boat the water is not glass and its going way over 50mph and this was the first hull that handled worse than the new hull in my new build im gonna hit 75mph with a spartan and yes this was mine in this video

Ok, try doing a turn at that speed. Ya, I didn't think so. Try doing ANYTHING besides going in a straight line with the spartan. Ya, I didn't think so. Also you even say in your video, the boat is barely out of the water. I guarantee if the waves were as little as an inch bigger you'd be swimming for your boat, because the boat is halfway out of the water in water like that which is by my standards very calm.

[Rcforever27]

Why would you want to corner at 65 mph? Look at the other Spartan vids on here and last time I checked when they're doing speed runs they're not cornering at full speed Thts just silly imo....I have a rustler vxl tht goes 65 ish and when.I'm at those speeds I def do not corner.mamba builds real boats lol I think he has it covered lol .... wish I.could get mine to tht speed .....and he had plenty of real boats near by if it flipped lol...JMO