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Author Topic: Carbon Fiber Muffler for 4-1's New PICS AND VIDEO 2-8-10  (Read 2668 times)

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Offline cb750k77

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Carbon Fiber Muffler for 4-1's New PICS AND VIDEO 2-8-10
« on: February 03, 2010, 11:30:42 PM »
custom made carbon fiber/kevlar muffler can check back for more pictures...
« Last Edit: February 08, 2010, 05:37:10 PM by cb750k77 »
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Offline bucky katt

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Re: Carbon Fiber Muffler for 4-1's
« Reply #1 on: February 03, 2010, 11:41:06 PM »
where did it come from? did you make it or buy it somwhere?
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Offline cb750k77

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Re: Carbon Fiber Muffler for 4-1's
« Reply #2 on: February 03, 2010, 11:54:31 PM »
i got it from a local guy who makes these for newer bikes (cbr's zx's ect...) so i was talking to him and he liked the Kerker setup i had and offered to make a prototype for mine... (clasic bike.... his first) and so he made one in 2.5in for the kerker header...

he uses some kind of 4 port air intake on the front side of the "can" and then uses that air to coool the inner pipe by doing that it "forces" the HOT exhaust gas faster out of the pipe... there is 2 little straw things that the "outter air" exits at.... its fairly sofisticated...

bottom line... the outside carbon fiber outter stays cold to the touch so if you ever have a passenger they wont melt thier shoe's or burn thier leg on the muffler...

he only charged me $200 and he custom fit it for my bike i will post pics of the inside and the intake ports its actually very k0ol!
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Offline wannabridin

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Re: Carbon Fiber Muffler for 4-1's
« Reply #3 on: February 04, 2010, 05:26:28 AM »
hows it sound??

and what's the deal with that hanger for it?  looks like it was put on as an afterthought?
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Offline cb750k77

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Re: Carbon Fiber Muffler for 4-1's
« Reply #4 on: February 04, 2010, 07:21:24 AM »
its sounds really good kinda like a cross between a Kerker and a modern bike it uses steal whool packing so it wont blow out over time like fiberglass will in the kerker so it kinda has a slightly sharper note to... but at idle it is suprisingly quite... but as soon as you get on it it comes alive.
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Offline 754

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Re: Carbon Fiber Muffler for 4-1's
« Reply #5 on: February 04, 2010, 08:38:33 AM »
Steel wool wont last forever, but probably longer than glass wool.
 I am thinking an oval shaped can might fit the bike better..
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Offline wannabridin

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Re: Carbon Fiber Muffler for 4-1's
« Reply #6 on: February 04, 2010, 09:12:24 AM »
at least it's repackable.  lets hear some clips of it running!!  go get a video! 

but it doesn't look bad, esp. for $200.  nice score! 
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1976 CB750K, currently under construction:
http://forums.sohc4.net/index.php?topic=64468.0

-And if you don't do it this year, you'll be one year older when you do...

Offline cb750k77

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Re: Carbon Fiber Muffler for 4-1's
« Reply #7 on: February 04, 2010, 11:06:59 AM »
i will get some as soon as the final touches are made....

soooo btw i tried the look and size of the ROUND can it was toooo big the triangle one was a much better fit and there is ROOM left over to lean over... VS the round can you would have to mount MUCH higher up to get the same effect...
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Offline cb750k77

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Re: Carbon Fiber Muffler for 4-1's New PICS 2-8-10
« Reply #8 on: February 08, 2010, 05:20:29 PM »
here are the pics as promised...

you can see the inner tubes i was talking about along with the intake holes on the front... you can really feel this thing draw in air and as it heats up the air draw becomes greater and the outer muffler stays cold...
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Offline cb750k77

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Re: Carbon Fiber Muffler for 4-1's New PICS 2-8-10
« Reply #9 on: February 08, 2010, 05:36:26 PM »
the video of it running as promised notice how i touched the muffler and it was not warm at all... it had been running for about 3-4min and my kerker baffle would of been a little uncomfortable to touch at that point...


http://www.youtube.com/watch?v=GEmmBhz7Tuk
« Last Edit: February 08, 2010, 05:40:23 PM by cb750k77 »
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Offline 754

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Re: Carbon Fiber Muffler for 4-1's New PICS AND VIDEO 2-8-10
« Reply #10 on: February 08, 2010, 06:50:58 PM »
 I can go 10 minutes and still touch the middle of my mufflers... OEM Honda..
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Maker of the WELDLESS 750 Frame Kit
dodogas99@gmail.com
Kelowna B.C.       Canada

My next bike will be a ..ANFOB.....

It's All part of the ADVENTURE...

73 836cc.. Green, had it for 3 decades!!
Lost quite a few CB 750's along the way

Offline cb750k77

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Re: Carbon Fiber Muffler for 4-1's New PICS AND VIDEO 2-8-10
« Reply #11 on: February 11, 2010, 08:50:07 PM »
the hanger is not an after thought its how most modern hangers on carbon fiber bikes work its a metal strap (aluminum) and it has silicon glued on the inside of the strap so it will stay in place... i have to trim the top and re drill the hole a little larger to acomidate the pass peg...

but other than that its good i like it!
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