50-70 mph boat

[Sigge]

Hi!

Here in cold Sweden all lakes are frozen so I am planning my new boat instead of racing. Right now I have an ECO modell (which is so slow) and now I want a very fast boat. I am planning to have a boat running 50-70 mph.

However, I am not sure what kind of boat I shall buy and not what kind of motor, number of batteries, speed controller and so on.

I am not planning to race, just to have
fun on the pond (fast is fun for me).

It seems there are some experienced racers on this forum, so perhaps someone can
help me with the "ingridients" for a 50-70 mph boat?


Bets Regards,
Sigurd Ruschkowski
Sweden

[will_myster]

It depends wether or not your after the scale look or after a rather plain look. a 12cell outrigger fitted with a hacker would have you running quite nicely. Rummrunner will he distributing there plans/kits soon so if was you i would wait for them. These are simply the best design's i beleive will be avalaible. Anything else but hydro i think takes to much to go fast. Hydros are alot more volitile. but as you said speed is what makes it fun for you, you may apreciate the fideling involved to abtain high speeds. I reckon if you went out got a couple of rc2400's and bundle it with a schulze controler you will have a neat package.

Never the less that's what i recommend you to get if you want to go fast. Beleive me a fast 12 cell boat is a handfull when you havent experenced the speed before. I jumped into it just like you did. By golly it was different.

Just be sure you not biting more off than you can chew. going fast isnt easy as putting all the ingrediants in the pot and hoping it will work.
My 2 cents

[Climate]

Just a point of clarification. There is a real big difference between a 50 MPH boat and a 70 MPH boat.
Now a days it is not that hard to get a good design running 50+MPH with the new motors and great cells available. It will take a lot of work to get that same boat running anywhere near 70, if it will do it at all.
Will is correct. There is a bit more to it than just dropping a hull in the waiter and adding throttle.
The first time I ran a model at 50MPH, :eek: I just about fell over. It was extremely fast! 60 was the same story, and so on.
If you have not run anything faster or less stable than the ECO boat before, take an intermediate step in to something in the 30-40 MPH range before you jump in to the higher speeds.

[Dick Crowe]

I agree with both you guys. Up untill a few months ago thre was only one guy in the states that I'm aware of that had run over 70 and maybe only a few that had hit 60. While the higher speeds can be hit, you'll need to know what you're doing if that makes any sense. William mentioned going with a 12 cell hydro. I'd agree with him. About a year and a half ago I ran 64 with a Hacker 7XL, Schulze 111 and 12 cells, spinning a v937 prop. The cool thing is this is also my current oval setup except for the prop, I run a x640 in Ovals. The boats were different as well. My oval 12 cell rigger would probably run in the high 50's with the v937. But, you'd have a boat that goes very fast and still have a system you could have a little fun with.

See ya,
Dick

[Ian Williams]

Hi Sigge, check out www.electro-marine.co.uk

[Sigge]

[QUOTE]Originally posted by Dick Crowe
William mentioned going with a 12 cell hydro. I'd agree with him. could have a little fun with.

I am thankful for your and the other guys replies! I guess I have to limit myself to a boat running in the 50s. Even though
I could use my ESC to lower the speed s) :)

I will soon be the (happy ?) owner of a PLett 290/30/4 and lots of Sanyo 2400s,
and have looked at Ray Fuller's El Lobo 3 (Straight-line record holder in P mono at 50.33 and Q mono at 57.25.)

Why do you guys recomend a hydro instead of a mono? What are the pros and cons of hydros vs monos?

Best regards,
Sigurd Ruschkowski

[will_myster]

Hydro's will always be faster then mono's with a comparitve setup. Why Typically speaking hyros, at leat 2 points of contact with the water, for a rigger it would be the 2 front sponsons and the prop, These sponsons being seperated at the front gives you the advantage of stability. On the other hand mono's have one wetted surface. Mono's are a bit different they have the habit to bank down on the side it turning 2 and spin out, Ive nearly alway encounter the death wobbles with my mono's, thats when it frees it self from the water i gunn the throttle at it wobbles out of control and flips over. Hydros, look cool ,throw up a long low rooster tail that looks cool. To put it simple there is to many pros/cons to list. but i say stick to hydro, wait for the realease of rumrunner hobbies (http://www.rumrunnerhobbies.com) and get a hydro. Scale or Outrigger would be Ok. Those kits are the best, get those and have a feild day.

PS. there will be plenty of support here if you need it.

Happy Boating

[Sorcerer 001]

For the speeds that you're looking for, a hydro is the more practical option. Less boat in the water, less drag, it's naturally going to be faster (given that the deck isn't shaped like a brick). I'm fairly new to the whole boat thing, but I can assume that hydros actually utilize lift much more than a mono, due to the tunnel between the sponsons.
The upside to a mono is better rough water stability, which may be what you're looking for if you run in water that's choppy most of the time. Monos, in my opinion, are the easiest to set up. Maybe one of the more experienced guys can elaborate on this.

[Dick Crowe]

Originally posted by Sigge

Why do you guys recomend a hydro instead of a mono? What are the pros and cons of hydros vs monos?

Best regards,
Sigurd Ruschkowski

Here's a comparrison.
If since you're talking about straightline speed.

P mono at 50.33
Q mono at 57.25

P Hydro 73+
Q hydro 82+

All of these mono and hydro records were set with Hacker motors and all were very strong records which make for a credible comparrison.

See ya,
Dick

[Sigge]

"Hydros, look cool ,throw up a long low rooster tail that looks cool."

OK, OK, guys, you got my interest in hydros!!


My dilemmas are two, though:

1) I don't have much experience in building a boat from scratch so my
IDEA is to buy a boat that has all the hardware installed and I will just put my motor, ESC, and radio stuff into the boat. I do know electronic, but not much about motors nor shafts nor rudders.

2) Here in Sweden there are not many
hydro boats to chose from; the only one I have found is Graupner's Taifun
(25 inches long), and that boat will only
run at 25 mph with an Ultra 920/8 (according to Graupner) and that's not even close to my 50 + mph I need.

On the internet there are some sites
that have hydros, but it is so darn hard to chose.

Perhaps, you can give me some
hints on hydro boats from internet mail order companies that have almost ready to run hydros?
Or any model that you have had good experience with that it is possible to buy via the internet?

Best regards,
Sigurd

[will_myster]

try finedesign (www.finedesignrc.com) or http://www.drcwebservices.com/ffe/
http://www.fastelectrics.com
Contact those site there will be some thing that will take your fancy, remember to contact Ray Fuller for FFE, Chris Fine for Dine Design, Andrew Gilhchrist of Fast electrics. Im quite ure they will organise something and have thought's on the matter as well.
PS. by the way Andrew has started selling a cool looking Pickle fork have a look

[AndyKunz]

Add to that list the UL1 which is sold by Blew By You (www.bbyracing.com). This boat was designed around the Graupner drive system and will easily do the 50MPH you want with a good motor and drivetrain. The stock setup does 25 MPH!

Andy

[Ray Bidwell]

Most of the time when the quys here say hydro they are talking rigger which are the fastest hydros. Dick and Larry's records address that.