My brand new .21 Rigger (Prototype)

[Saugling]

Here are the first shots of my brand new .21 Rigger

Its based on our own design and I thought that maybe some of you are interested to see what is going on in the rest of the world (Germany).

Unfortunately there is still a lot of ice on our lake - so driving is impossible

You can find more infos about our boats on our (german) homepage:

http://www.hydroplane.de

Regards

Robert

[email protected]

 

[PondSkimmer]

That is a nice looking boat!

How did you mount the engine in th etub with no screws comming through the sides? ???

How does having the turn fin mounted to the tub work out? i have never seen that before, usualy they are mounted to the sponson do you find any problems with it so close to the tub?

Thanks and Good luck with it!

 

[Ron Olson]

Nice boat and interesting placement of the turn fin.

We feel your pain about the iced up ponds, we are going through the same thing here.

 

[waterbug]

If you look at the last photo closely you can see the aluminum mount, looks to be glassed in.

I like the adjustable sponsons with out moving the shafts.

Also check out the copper header pipe and the twin tanks for cowl clearance.

And dont forget the hinged cowl with the quick hitch pin.

 

[topfuel443]

Hey!.... I just got finished with my new rigger and it has a hinged cowl too.... nice looking boat, not sure about the turn fin though, would have to see that one work for myself.

~ James

 

[Saugling]

wow...a lot of response ;D

I started to place the turnfin there a while ago, it works really great in my .45 outrigger...hope it works great in this boat too!

I have seen some boats in Germany which have the turnfin there - so I'm not alone with this!

I personally don't like engine-mounting-srews to come through the side ;D

The pictures may help understanding our engine-mount-system:

The needed parts

The side of the Boat is made of 1mm Plywood - 6mm Balsa - 1mm Plywood.

The nut is pressed in the Balsa and fixed with Epoxi (and there is Epoxi between the nut and the Balsa - when you press in the nut, this Epoxi is then pressed in the Balsa and makes the wood hard enough, then we glue the plywood on both sides. Finally we imbue the wood with Polyurethane - this makes the wood even more solid).

Finally you do not see anything on the outside

The following pic may help to understand (just imagine the wood between the shock mount and the nut):

And of course we like adjustable Sponsons 8)

I hope you understand everything - english is not my native language :

 

[PondSkimmer]

undertstood everthing just fine

That was a great idea with the mount! have you ever had a problem with the wood getting loose from any vibration due to the engine?

 

[topfuel443]

Thats a realy nice way to mount the bullet, really clean looking when its finished. you gotta love new ideas form abroad. thanks for the pics.

~ James

 

[Saugling]

undertstood everthing just fine

That was a great idea with the mount! have you ever had a problem with the wood getting loose from any vibration due to the engine?

Never had any problems, but its important to use enough Epoxi / Polyurethane otherwise the Balsa is not stable enough!

 

[PondSkimmer]

i have been wanting to da coustom mount for a while now but i cant locate those isolation rubbers? does a home depot type store cary them? what is the propper name of them? i have been to a few smaller hardware stores and tryed to describe them to the clerk and they just looked at me confused? they are a standard 1/4 20 thread right?

 

[Saugling]

i have been wanting to da coustom mount for a while now but i cant locate those isolation rubbers? does a home depot type store cary them? what is the propper name of them? i have been to a few smaller hardware stores and tryed to describe them to the clerk and they just looked at me confused? they are a standard 1/4 20 thread right?

Continental sales these "Schwingmetalle" (sorry, don't know the exact translation, maybe "rubber/metal composite"???), they have a metric screw thread (M4) here in Germany.

Look here:

http://www.contitech.de/ct/contitech/theme...ngmetall_e.html

or here

http://www.schwingmetall.com

We bought them here:

http://www.roth-ing.de

Perhaps they also sale to the USA???

I hope this helps

 

[waterbug]

Tower Hobbies has them in the engine mount section. They come in 6/32, 8/32,10/32,1/4. Made by Dubro,J'tec, Chip Hyde.

If you have a hobby shop in your area they should have them.

 

[Ian Inverarity]

Wow,

Neat looking boat! I like those push rod seals! I have been wanting to try that hinged canopy idea for a while, and have some nice light weight stainless hinge to do it one day. I have seen a similar turn fin location on a plan I have of an English outrigger. Looks like an OPS pipe?

Ian.

 

[Saugling]

Yes, it is a OPS pipe. Bought it in ebay for about 10$. Still have to check if it works with this engine, but I think it will.

 

[Saugling]

The lakes here are no longer covered by ice...so we went out for a first maiden trip ;D

Just have a look at the pictures.

The engine (OS 21RX-M) goes like hell in this boat 8)

Have to wait for some new props now, at the moment I have mounted a Graupner 48mm carbon prop, I guess the reached speed is about 85 km/h at the moment.

We also made two short videos:

http://www.hydroplane.de/inaktion/videos/v...gger2003_01.avi

http://www.hydroplane.de/inaktion/videos/v...gger2003_02.avi

They are DivX coded. You need the DivX4 at least. You can download the newest version directly from

http://www.divx.com/divx/

Or download the DivX4 codec from our homepage here:

http://www.hydroplane.de/download/divX4Ful...llInstaller.exe

 

[Ian Inverarity]

Robert,

Looking at the pics it looks like the hull is generating significant side-slip in the corners, ie while the boat may take the corners well (and looks to on the video) it effectively slides sideways a bit to do it. This looses speed in corners. Also the last pic shows what appears to be the inside sponson hopping (looking at the wake from it) indicating that the turnfin is not holding the inside sponson down on the water very effectively in turns. Maybe a larger turnfin with a bit of hook in the bottom is in order?

Looks pretty good otherwise! 8)

Good luck! ;D

Ian.

 

[Saugling]

I will experiment with a thinner bladed turnfin, perhaps 2-3 centimeters longer at the beginning :