Modifying the exhaust (56k no)

I

impression

New Member

• Aug 7, 2011

• #1

ok so, i changed to a larger muffler on the back of my expansion chamber which led me to lose 50% of the power in my bike.... Not good. So after a bit of a chat to some guys on these forums ( you know who you are ) I got to work

this is what i was greeted with when i cut it open...

Needless to say it was a bit restrictive so i set out to fix that...

and here we have some new sound dampeners to be put in

 

I

impression

New Member

• Aug 7, 2011

• #2

and there we go

Now to business....

Some of my welding gear ill be using with this

 

I

impression

New Member

• Aug 7, 2011

• #3

and the end cap inner pipe ( new) ...

and here it is cut down

going for the test fit

and got it into place and taped it up for welding

 

I

impression

New Member

• Aug 7, 2011

• #4

and here we are

now i forgot to take pics of me fabricating the tether but here's what it looks like welded on

and the finished product so far

Needless to say i need to borrow a mate's angle grinder and trim the edges so to speak and after that i'll be painting it.

Yet to test, i guess that will happen on the way to class in 8 hours

 

LS614

Well-Known Member

• Aug 7, 2011

• #5

nice job man, happy riding

 

I

impression

New Member

• Aug 7, 2011

• #6

Bike works beautifully.

estimated speed now is 60km/h ( keeping up with traffic on a 60km/h road) on the flat 41t sprocket NT-speed carby Rock Solid 66cc engine.

I now want a 36t sprocket so badly

 

I

impression

New Member

• Aug 8, 2011

• #7

if you guys want a good look at the exhaust check out the video i made this morning before class.

‪bike1‬‏ - YouTube

 

killercanuck

New Member

• Aug 9, 2011

• #8

Looks like that'll be alot less restrictive after your mods, quieter too.

Kudos for Arc welding on tubing without blowing through.

(keep an eye on your plug)

 

I

impression

New Member

• Aug 10, 2011

• #9

killercanuck said:

Looks like that'll be alot less restrictive after your mods, quieter too.

Kudos for Arc welding on tubing without blowing through.

(keep an eye on your plug)

Click to expand...

hehe, yeah it's quite the challenge to arc weld on 0.25mm tubing. especially stainless.

Today the stock welds blew off on the front large tubing mounts.... that's the last time i buy something and use it with such pitifull welds... although the bike was going quite fast at the time.

front mounts were held on by approx 10mm^2 steel weld.

I redone it to be 65mm^2 titanium welds when i got home today. Should hold now

 

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Last edited: Aug 10, 2011