SBP expansion chamber

[HumanPerson]

I have to say this SBP expansion chamber is the bomb!

 

[Marc W]

Is it loud?

 

[HumanPerson]

Is it loud?

a little louder than a stock exhaust and throaty sounding.
Bumped the low speed get up and go quite a bit.

 

[Marc W]

a little louder than a stock exhaust and throaty sounding.
Bumped the low speed get up and go quite a bit.

What about top speed?

 

[HumanPerson]

What about top speed?

Haven't kept it at WOT yet, just been cruising at 18 to 26 MPH for 30 minutes one way then another 30 the other way back lol
This particular engine is from zedamotorsports with a 6.cc actual fred head, along with some transfer port modifications and other small mods wich hopefully should add up, after broke in, to a fairly reliable ride as long as i keep it under 50
What kind of bike are you building @Mark W

Moderators Note:
Please be aware that Zeda Motor Sports and Robert Bianchi have nothing to do with Zeda itself which is a manufacturer of Zeda Motors in China.
A reputable vendor of the Zeda line of motors can be found at bicycle-engines.com

 

[HumanPerson]

Wondering if i should put a clean out plug on the bottom of the chamber near the silencer?
Has anyone else done that to a SBP expansion chamber exhaust?
Thinking of just drilling a small hole and putting a modified self tapper in it with some blue locktight and let sit 24 hours?

Thoughts?

 

[HumanPerson]

Going to make a Columbia Klunker for the next MB. Any input on those bikes?

 

[HumanPerson]

Oh, FOTI, i went ahead and changed the mechanical front disc brake system to Hydraulic and let me tell you the difference is great!

 

[HumanPerson]

Just waiting on the rear sprocket and hub adapter, then we'll be rollin

 

[Marc W]

So how is the top end? It's been long_ enough for break-in?