Sound of a Delkevic 4:1 - A few people asked for this

[salty_monk]

Nessism & I fired up my rebuilt 1100G for the first time this weekend.. a few teething problems & intermittent on cyl 4 (blocked carb passage I think) but doesn't affect the noisemaker. Click the pic for video (excuse the mess!)

GS1100G Delkovic by salty_monk, on Flickr

[Steve]

Please tell me that's a Shinko 712 on the rear.

The pipe's a little loud for my taste, but it sounds nice.

.

[salty_monk]

Yep it's a 712... I like them a lot

[Steve]

Good to hear it's not a Kenda Challenger.

.

[Buffalo Bill]

It does sound sport bike and loud.
Can you guess the weight difference between OEM and the Delkevic full system?
Thanks!

[80GS1000]

Sounds awesome!

[salty_monk]

OEM to Delkevic at a pulling it out of my *ss guess, Delkevic is about 1/4 of the weight.

[steve murdoch]

Sounds good to me!

[kochic]

Do you hear a kind of off-beat sound when riding?
Marc

[salty_monk]

No riding yet...
I'll let you know when I do... I think my V&H had a kind of "pulse" to it on one of the bikes at freeway speeds.

[kochic]

I don't know if its the longer number 1 pipe.
I only had the Delkevic on my 1000 for less than 30 miles.Switched back to an old Bassani.
Its a nice exhaust for the price.
Marc

[rphillips]

Never owned a Delkevic, but it sounds good to me, I'm kind'f addicted to the 4 into 1 sound, love them all. But the only one that really stands out, to me, was the old Yosh. 4 into 1 with the 3" collector, you could recognize that sound as far as you could hear them. Got one out in the garage, took it off cause couldn't have a center stand & had to remove to change the oil. Aggravating, but gosh they sure sound unique.

[Grimly]

I don't know if its the longer number 1 pipe.
I only had the Delkevic on my 1000 for less than 30 miles.Switched back to an old Bassani.
Its a nice exhaust for the price.
Marc

I mostly got rid of the annoying pulsating note by welding in a cone to the gathering point of the gases before they go along the centre baffle pipe. I stuck a couple of stainless steel pot scrubbers in there too, just to be sure. The racket has nearly gone, but not quite.
I'll be making a new internal muffler design with two (or three) parallel perforated pipes and forcing the gases to slow down and migrate across to the exit.

[kochic]

The diameter of the baffle is small on the Delkevic, there are not that loud.
Are you making a complete new baffle?
Marc

[Grimly]

The diameter of the baffle is small on the Delkevic, there are not that loud.
Are you making a complete new baffle?
Marc

Well, I didn't use the Delko muffler, because I knew I'd have to cut and modify a brand new one to fit the AFR sensor and other reasons, apart from that, the Hardly muffler was much cheaper as a starting base to modify. It came as a bit of a surprise that your own one had the same blat, as I'd assumed the noise was peculiar to mine.
Once I get the fuelling sorted out finally I might buy the proper Delko muffler and not have to cut it about, but that's a way off yet.