Great meeting last weekend

AsFastAsPossible · Jul 31, 2006

Hi guys,

I'm new here (but have a lot read) on this board and i just want to share some pics of my Eagle SG-80 with a K90. Pics were taken at a big meeting for powerboats in Germany, two weaks ago. Conditions were not too easy... but it was fantastic fun!

Some more of the rigger are HERE

A lot more of the whole meeting are THERE

Greets from Germany

Don Ferrette · Jul 31, 2006

AsFastAsPossible said:
Hi guys,

I'm new here (but have a lot read) on this board and i just want to share some pics of my Eagle SG-80 with a K90. Pics were taken at a big meeting for powerboats in Germany, two weaks ago. Conditions were not too easy... but it was fantastic fun!

Some more of the rigger are HERE

A lot more of the whole meeting are THERE

Greets from Germany

Welcome to I/W.

Tell us about the tuned pipe you're running on your K90.

AsFastAsPossible · Jul 31, 2006

Don Ferrette said:
Welcome to I/W.

Thx a lot.

Don Ferrette said:
Tell us about the tuned pipe you're running on your K90.

It's the original Kalistratov pipe. Very quiet with lots of rpm. Best setup was 11.5 inch length.

topfuel443 · Jul 31, 2006

where are you located in Germany? I am in the Kaiserlautern area. ~ James

Mike Stutzman · Jul 31, 2006

I have a pipe that looks just like the one in these pics. But, it was bought as a P.I.P. A100 pipe not a

Kalistratov pipe. I am not very familiar with the "over seas" pipes avalible except for the one like this that I have tried to test twice now. Is the P.I.P. A100 a "copy" of the Kalistratov or vise versa? Or does it just "look" the same in the pics? Both times I tried it was after I got my scratch built rigger runninq a CMB 1.0, MACS "quiet" pipe slightly drilled out, and an ABC 2718 prop going 87 M.P.H. on radar and sounding like it was turning adequite R.P.M.'s. Put this P.I.P. pipe on at a few different lengths and could barley get it on plane. Even tried a borrowed Andy Brown modified 1667 prop and got a better result but, nothing like the drilled out MACS quiet pipe that is just @ the I.M.P.B.A. db limit. The P.I.P. pipe sure is quiet but I can't quite get it to work. When you say 11.5", where are you measuring to on the pipe? If this is the same or close to the same pipe any replies would really help me!

Thanks

Mike Stutzman

AsFastAsPossible · Aug 1, 2006

topfuel443 said:
where are you located in Germany? I am in the Kaiserlautern area. ~ James

Hi James. I'm living in the near of Munich.

Mike Stutzman said:
I have a pipe that looks just like the one in these pics. But, it was bought as a P.I.P. A100 pipe not a

Kalistratov pipe. I am not very familiar with the "over seas" pipes avalible except for the one like this that I have tried to test twice now. Is the P.I.P. A100 a "copy" of the Kalistratov or vise versa? Or does it just "look" the same in the pics?

Maybe the P.I.P. pipe is mostly the same as the Kalistratov pipe. Because the Kalistratov pipe is already a clone of the good old Rossi's one.

Mike Stutzman said:
Put this P.I.P. pipe on at a few different lengths and could barley get it on plane.

Same here. Setup is very hard to find. But when getting the rigger on plane it has a lot of pressure. Btw: I read about your problems of "too loud pipes". This on makes 80 dB(A) at full speed, measured in 45 feet distance from the waterside.

Mike Stutzman said:
When you say 11.5", where are you measuring to on the pipe? If this is the same or close to the same pipe any replies would really help me!

I always measure the distance between the center of combustion chamber (plug) and ending of first cone.

cu

Florian

Saugling · Aug 3, 2006

Finally...some more FSR-H boats here in Germany B)

Are these pictures from the Heilbronn meeting? I used to be there 2 times in the past, but never saw any riggers

Robert

Ian Inverarity · Aug 3, 2006

Mike Stutzman said:
I have a pipe that looks just like the one in these pics. But, it was bought as a P.I.P. A100 pipe not a

Kalistratov pipe. I am not very familiar with the "over seas" pipes avalible except for the one like this that I have tried to test twice now. Is the P.I.P. A100 a "copy" of the Kalistratov or vise versa? Or does it just "look" the same in the pics? Both times I tried it was after I got my scratch built rigger runninq a CMB 1.0, MACS "quiet" pipe slightly drilled out, and an ABC 2718 prop going 87 M.P.H. on radar and sounding like it was turning adequite R.P.M.'s. Put this P.I.P. pipe on at a few different lengths and could barley get it on plane. Even tried a borrowed Andy Brown modified 1667 prop and got a better result but, nothing like the drilled out MACS quiet pipe that is just @ the I.M.P.B.A. db limit. The P.I.P. pipe sure is quiet but I can't quite get it to work. When you say 11.5", where are you measuring to on the pipe? If this is the same or close to the same pipe any replies would really help me!

Thanks

Mike Stutzman

Mike,

I bought a pipe with an A90 years ago that looked like that, I dont know if they have changed but it was very quite with little power. It wasnt actually a tuned pipe, but was a tuned muffler. Looking from the engine end there was no converging cone, just a series of baffles with progressively smaller holes. These tuned mufflers make more power than just a plain muffler.

I have no idea if the Kalistratov pipe is anything like it tho.

Ian.

Geraghty · Aug 3, 2006

Those are some of the best model boat action photos I have ever seen.

Rod Geraghty

CConrad · Aug 3, 2006

Hello, i'm the chief mechanic from my son Florian and his rigger

What i can tell you about the Kalistratov-pipe is, that there is for shure an converging cone inside and after this are three chambers with a lot of drilled tubes inside ( boresholes are all different diameters ). That is the damper part. Therefore that pipe is so long. This damper part produces almost nothing backpreassure and is NAVIGA legal! ( 80dBA ).

I forgot:

The engine and the Pipe are rubber mounted, and inside the front hatch there is 5mm Neopren rubber foam to protect the noise, that comes from the carb.

Greetz

Curt

Don Ferrette · Aug 3, 2006

CConrad said:
Hello, i'm the chief mechanic from my son Florian and his rigger

What i can tell you about the Kalistratov-pipe is, that there is for shure an converging cone inside and after this are three chambers with a lot of drilled tubes inside ( boresholes are all different diameters ). That is the damper part. Therefore that pipe is so long. This damper part produces almost nothing backpreassure and is NAVIGA legal! ( 80dBA ).

I forgot:

The engine and the Pipe are rubber mounted, and inside the front hatch there is 5mm Neopren rubber foam to protect the noise, that comes from the carb.

Greetz

Curt

Thanks for the info Curt. Anything that you can share on quiet pipes & noise reduction, especially on the big nitro motors will be greatly appreciated. Perhaps with some informative input from folks like yourself we can enlighten others that this is not as hard to do as some seem to think or imply.

CConrad · Aug 3, 2006

Don Ferrette said:
Thanks for the info Curt. Anything that you can share on quiet pipes & noise reduction, especially on the big nitro motors will be greatly appreciated. Perhaps with some informative input from folks like yourself we can enlighten others that this is not as hard to do as some seem to think or imply.

hello Don,

i read a lot from your thread about your problem with the noise. Please don't missunderstand me, but i think you guys in US have to try it in another way:

First you have to reach your required DB-level ( whatever the limit might be! ), without thinking about the max. speed, your boat can run. After that, you can try to find the max speed within your noise-limit. The other way, trying to quiet a boat, that's runnig with open pipe, a solid mounted engine and pipe, down, holding the max reached speed, is by my opinion almost impossible.

What do you think?

Don Ferrette · Aug 3, 2006

CConrad said:
hello Don,

i read a lot from your thread about your problem with the noise. Please don't missunderstand me, but i think you guys in US have to try it in another way:

First you have to reach your required DB-level ( whatever the limit might be! ), without thinking about the max. speed, your boat can run. After that, you can try to find the max speed within your noise-limit. The other way, trying to quiet a boat, that's runnig with open pipe, a solid mounted engine and pipe, down, holding the max reached speed, is by my opinion almost impossible.

What do you think?

Curt you are right at the heart of the issue for some. Rather than spend the time to make the quiet pipes work, some immediately abandon them when they lose a few MPH & tell everyone they're junk & they don't work. Funny thing is even with the semi muffled pipes we use now, we're going FASTER than we ever did with unmuffled pipes. I'll be the first to admit how when I first switched to muffled pipes I lost speed but after a few real hard core all day sessions at the pond I was going faster than before. Unfortunately some here in the US don't want to take the time to learn to make the boats quieter (a polite way of saying they're lazy) or are so resistant to change they go kicking and screaming the whole way. This is no different than when the switch was made from open stacks to tuned pipes, people raised hell at the idea, fought it tooth & nail only to find out later they could run alot faster...

I'm really looking forward to the Sunday testing of the big block super quiet pipes I was sent to test. If all goes well & they get the thumbs up there are already part #'s assigned to the design & will be immediately available.

Great meeting last weekend

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