Postie Build

[Leitchy]

Ive just had a over sized piston (125) and 1x tooth larger rear sprocket fitted to my bike to get some extra go. Thinking about fitting a new exhuast next but looking for one that can offer more power than noise? Want a little more growl but nothing to hardcore. Supplier? Cost? Model?

Cheers

 

[Cactus Jack]

For a posty bike you'd be looking at getting a custom made down pipe ... I don't know how you're going to go with the increased noise thing though since performance increase and noise increase seem to skip happily along together ... hand in hand ...

Mac posted pics on how to make a muffler that increased power but kept the noise down ... I'll see if I can dig the thread up for you ... (Found it !)

http://www.miniriders.com.au/forum/tech-talk/14947-carby-situation-guidelines-needed-2.html

A place called Skyway used to build reverse cone megaphone pipes for modded XR75's and they claimed they were 10% quieter than stock ... but gave 10% more power ... They used a patented spiral fluted core ... I can't find any specs or info on how they were configured tho' ....

Pic of a reproduction Skyway pipe ...

http://www.xrminiracer.com/files/31894238.jpg

Akunar sells down pipes ... some of their Honda wave pipes might fit ...

AKUNAR MOTORCYCLE EXHAUST SYSTEMS

 

[Dabomb]

wouldnt a bigger rear sprocket lower ur top speed?

 

[Peter1230]

yer... leitchy i think u screwed that part if u werer after speed'

 

[alphabetica]

Exhausts

I had some pics here of how I did my postie bike exhaust awhile back.

 

[Leitchy]

Thanks heaps for the tips and links. Probably would've helped if i re-read my msg b4 posting. would have explained the typo. I went 1x tooth larger on the front sprocket for more top end speed.

Any one else got Postie build info and pic's?