Home made baffles and end caps for my CL77 Exhaust

Snakeoil · Post by **Snakeoil** » Sat May 07, 2011 8:47 pm

geosar wrote:Here is a rough drawing with some numbers. You are correct, the wire is for twisting it out of the pipe. There is also a threaded hole in the rear flange to accommodate a small, chrome bolt. That is a 7 inch ruler at the bottom.

George

Wow, that was quick. And nicely done, too, George. A few more questions. How many holes in the cylindrical part and the conical end cap? I'm gonna guess 15 holes in the cylindrical part because they don't look diametrically opposed, and 3 in the cap. Also what diameter are the holes?

Thanks again,

Rob

geosar · Post by **geosar** » Sat May 07, 2011 10:10 pm

There are 2 holes in the tapered cap. They are about 120 degrees apart and face the outside of the bike.

There are 18 holes in the cylindrical part.

The holes are about 1/8 inch realizing that they are really metric. The bolt hole at the tail is a little larger. I can get the thread measurement next week but we can put any small sturdy bolt there.

The pictures show the outside and inside of the device. The cylindrical parts slide into the washer looking pieces and are tack welded.

George

geosar · Post by **geosar** » Sun May 08, 2011 12:04 pm

Two more photos.

You can see sort of, the holes in the tip. I am sure the exact location is not critical. There are definitely 2 facing the same side the anchor hole is.

George

Snakeoil · Post by **Snakeoil** » Mon May 09, 2011 10:47 am

Thanks George. I wanted the dimenions to produce an accurate flow or flows to the original.

Gotta make a run to the Metal Supermarket this week so I'll see what they have in thin wall tubing like this.

regards,
Rob

geosar · Post by **geosar** » Mon May 09, 2011 10:50 am

You are the metal magician, Rob.

I am actually taking my 72 CB750 on it's first road trip this week but I will be interested in your shopping trip when I return.

George

geosar · Post by **geosar** » Wed May 11, 2011 9:22 am

My J C Whitney short baffles arrived. They are more substantial than I imagined. Time to start cutting and grinding to see if I can make them fit.

George

Snakeoil · Post by **Snakeoil** » Wed May 11, 2011 12:55 pm

George, just cut and pasted all your pic and measurements into a Word doc for future reference.

Metal Supermarket did not have any thinwall tubing. So I'm going to have to go into scrounge mode. I'm thinking old bicycle frame tubing might work. Need to measure and cut one apart. I see them all the time in people's trash. Of course, now that I want one, I won't find one or they will all be aluminum frames.

regards,
Rob