Hydro news....geared rigger....and more

[Jorgen Andersson]

Hello

Here we have a link to Niklas excellent blog.

http://ne-stuff.blogspot.com/

Jorgen

 

[Jorgen Andersson]

Hello

Please take a look at the prizes that was made especially for this race!

You have to scroll down a little bit on the link above.

Enclosed is a picture of the new HydroShock 21.

Jorgen

 

[Jorgen Andersson]

And here is a picture of the geared 21 rigger.

Jorgen

 

[XtremeRcBoats]

Hi Jorgen,

very nice riggers, never seen a geared rigger before.

Are you coming to the WorldChamps in Hungary?

 

[Jorgen Andersson]

Hello

Thanks for the nice words about the boats.

No Worlds for me this time, I have been away from boating for a couple of years, so I am not qualified or up to speed for such an event, at the moment.

Maybe the Worlds 2012 will be on the agenda, it will be interesting to find out the location for that event.

Jorgen

 

[Charles Perdue]

Hello

Here we have a link to Niklas excellent blog.

http://ne-stuff.blogspot.com/

Jorgen

Hello Jorgen, good to have you back.

Charles

 

[Wes James]

Jorgen-

Very cool stuff! Your blog pages were most interesting, and your boats beautifully constructed.

Why do you offset the engine?? And how did you decide how much to offset it?

Wes

 

[Jorgen Andersson]

Hello Charles

Thanks, it feels good after the first race.

I use your Zoom proto carb on the black carbon boat and it is just GREAT!

Hope you have sold a lot of the Zoom carbs during the last years.

Any new great Perdue products in the pipeline?

Hello Wes

Thanks for the nice words. The HydroShock carbon and the geared boat are mine.

The blog and most of the rest belongs to teammate Niklas Edlund, he is the man behind the blog/camera/engine offset, maybe he can shim in here and give his comments?

Thanks

Jorgen

 

[Charles Perdue]

Jorgen, I have a few things in the works but nothing ready to release yet. I will be getting back to you for you to test one of the ideas for me.

AND those are some nice looking boats and engineering. I like the aerodynamics on the carbon boat.

Charles

 

[Niklas Edlund]

Jorgen-

Very cool stuff! Your blog pages were most interesting, and your boats beautifully constructed.

Why do you offset the engine?? And how did you decide how much to offset it?

Wes

Hi Wes,

Blogg: Thanks.

My latest KEP's (and YAP's) .21 riggers use a 5 mm off-set motor set-up (to the right) with a straight drive line. One reason is just so people would start to think a little... But the main reason on my .21 riggers is that I then can mount booth S9650 servos (throttle & needle) on the left side of the stuffing tube and the receiver battery on the other side. I like the weight forward in these designs. Then there is a little bit more space in the engine compartment and one can either make the tub shorter or use the extra space between the tubes for extra tank volume...

So the only reason its 5 mm and not 2 or 10 mm etc is that 5 mm is enough so I can mount the radio gear as I like in these riggers. I draw and design all my riggers with the radio gear (and all other hardware also) in it so I know where everything will be even before starting building them. I can also drill the bulkhead holes before gluing them between the tub sides etc.

There is NO handling advantages what I know of because the engine is off-set - thats not the reason why I do it like that. But Im fine with people thinking its like that (until they ask me).

Here you can see it in wood - do note I dont use the ski any more:

http://ne-stuff.blogspot.com/2009/11/keps-21-09-in-wood.html

http://ne-stuff.blogspot.com/2009/09/keps-21-09-updates.html

http://ne-stuff.blogspot.com/2009/05/keps-21-09-pics.html

http://ne-stuff.blogspot.com/2009/05/first-test-of-keps-21-09.html

Ps, NE-Stuff stands for "Niklas Edlund's stuff" or the short version; E-Stuff = Edlund's Stuff...

 

[Jorgen Andersson]

Hello Charles

Thanks for the nice words on the HydroShock carbon boat!

Here we have some more detailed pictures of the rigger.

I have just started the testing again, but it is very promising so far.

Tomorrow I will test some turn fins, two of them have your design!

Regarding your coming products, I will of course help you with what I can, just send me a PM or email.

Thanks

Jorgen

 

[Jorgen Andersson]

Hello

What props are quick on the 21 riggers today?

Please tell me what you have had good results with.

Thanks

Jorgen

 

[Wes James]

Jorgen-

Very cool stuff! Your blog pages were most interesting, and your boats beautifully constructed.

Why do you offset the engine?? And how did you decide how much to offset it?

Wes

Hi Wes,

Blogg: Thanks.

My latest KEP's (and YAP's) .21 riggers use a 5 mm off-set motor set-up (to the right) with a straight drive line. One reason is just so people would start to think a little... But the main reason on my .21 riggers is that I then can mount booth S9650 servos (throttle & needle) on the left side of the stuffing tube and the receiver battery on the other side. I like the weight forward in these designs. Then there is a little bit more space in the engine compartment and one can either make the tub shorter or use the extra space between the tubes for extra tank volume...

So the only reason its 5 mm and not 2 or 10 mm etc is that 5 mm is enough so I can mount the radio gear as I like in these riggers. I draw and design all my riggers with the radio gear (and all other hardware also) in it so I know where everything will be even before starting building them. I can also drill the bulkhead holes before gluing them between the tub sides etc.

There is NO handling advantages what I know of because the engine is off-set - thats not the reason why I do it like that. But Im fine with people thinking its like that (until they ask me).

Here you can see it in wood - do note I dont use the ski any more:

http://ne-stuff.blogspot.com/2009/11/keps-21-09-in-wood.html

http://ne-stuff.blogspot.com/2009/09/keps-21-09-updates.html

http://ne-stuff.blogspot.com/2009/05/keps-21-09-pics.html

http://ne-stuff.blogspot.com/2009/05/first-test-of-keps-21-09.html

Ps, NE-Stuff stands for "Niklas Edlund's stuff" or the short version; E-Stuff = Edlund's Stuff...

Niklas-

Some great pictures of some great work in the links you provided. You guys are really building some well thought-out boats. I'm very impressed. I think a lot of us can learn a lot just looking at your work- I know I sure can!

I'm just building my first boat in 30+ years, a JAE .21 rigger... having fun with the build.

Thanks!

Wes

 

[Niklas Edlund]

Jorgen-

Very cool stuff! Your blog pages were most interesting, and your boats beautifully constructed.

Why do you offset the engine?? And how did you decide how much to offset it?

Wes

Hi Wes,

Blogg: Thanks.

My latest KEP's (and YAP's) .21 riggers use a 5 mm off-set motor set-up (to the right) with a straight drive line. One reason is just so people would start to think a little... But the main reason on my .21 riggers is that I then can mount booth S9650 servos (throttle & needle) on the left side of the stuffing tube and the receiver battery on the other side. I like the weight forward in these designs. Then there is a little bit more space in the engine compartment and one can either make the tub shorter or use the extra space between the tubes for extra tank volume...

So the only reason its 5 mm and not 2 or 10 mm etc is that 5 mm is enough so I can mount the radio gear as I like in these riggers. I draw and design all my riggers with the radio gear (and all other hardware also) in it so I know where everything will be even before starting building them. I can also drill the bulkhead holes before gluing them between the tub sides etc.

There is NO handling advantages what I know of because the engine is off-set - thats not the reason why I do it like that. But Im fine with people thinking its like that (until they ask me).

Here you can see it in wood - do note I dont use the ski any more:

http://ne-stuff.blogspot.com/2009/11/keps-21-09-in-wood.html

http://ne-stuff.blogspot.com/2009/09/keps-21-09-updates.html

http://ne-stuff.blogspot.com/2009/05/keps-21-09-pics.html

http://ne-stuff.blogspot.com/2009/05/first-test-of-keps-21-09.html

Ps, NE-Stuff stands for "Niklas Edlund's stuff" or the short version; E-Stuff = Edlund's Stuff...

Niklas-

Some great pictures of some great work in the links you provided. You guys are really building some well thought-out boats. I'm very impressed. I think a lot of us can learn a lot just looking at your work- I know I sure can!

I'm just building my first boat in 30+ years, a JAE .21 rigger... having fun with the build.

Thanks!

Wes

Wes,

Thanks. I hope it can inspire people to build their own JAE or KEP's rigger (or any other rigger for that matter).

Have fun building!

Ps, here's my first and only (so far) take on the JAP style of rigger from last year. Its not ready so to speak and I have no plan to make a drawing of it either.

http://ne-stuff.blogspot.com/2009/10/my-take-on-jae-style-of-riggers.html

 

[Jorgen Andersson]

Hello

21 props - We have found good speed with H6 and H7 with 3.5-3.75 cup.

The S15 with full dia and some reduction of the area with 3.5-3.75 cup is very fast. but still a bit jumpy in the rear.

Most of the props we use are prepared by Sholund.

Any other props suggestion in this area?

Thanks

Jorgen

 

[shoboat]

Jorgen,

I have reduced a few H-7's w/@4.29" of cup that are really fast.

I didn't think the motors would pull them but 80+ on the Stalker

was not lying. We have tricked up a few more 1450's that run about

the same speed around 45.75mm in diameter. I will let you know we

are running Zoom 21 carbs and some special pipes that scream RPM though.

RPM = SPEED no matter what way you try it. Nice looking boat. I also

have a few more special propellers to try out, I just need the time to see

how well the new Stainless Steel propellers run with the most current profiles.

The S-15's need a lot of profiling to get them to run well.

We have a few # 2 Profiles that are pretty quick.

Thanks,

Mark Sholund

 

[Jorgen Andersson]

Hello Mark

Thanks for update, I have sent you a PM.

Yes, rpm is one of the keys to higher speeds, but as always you need to compromise in order to get driveability.

Jorgen

 

[shoboat]

Jorgen,

Drive ability comes with the correct diameter for the boat.

I hear about this a lot with gear drive set ups. Usually

they are trying to pull too much blade area ratio for their

set up. If you ever go to a time trial listen to a record

setting engine, it will sound like it is going to break.

Center Of Blade Pitch is holding most of our propellers back

from record breaking speeds, if you have the motor and pipe

combination to pull more. I will see what I can do about your reqest.

Thanks,

Mark Sholund

 

[Jorgen Andersson]

Hello again

Thanks for your input Mark.

Yes, I agree, it is easy to go for too much area. I have reduced the area on a couple of props recently and the results are only positive, same or slightly improved speed and better pick up.

I also would like to have your input on props to the geared hydro 21.

I am currently using some SAW 45 props, I will get the details and get back to you.

My plan with this boat is to have a great rough water set up that handles waves and racing water. The first tests have been really positive, almost as good speed as "normal" boats and much more efficient to keep up the speed in poor water.

Internationally (NAVIGA) we can have two boats per class and you could switch between heats as you like.

By the way - What are the new pipes you refered to?

Thanks

Jorgen