Monty two into one exhaust.

[sonicboom500]

Before I start trying to rebuild my Monty exhaust I thought I'd ask if this was a worthwhile route to try.
When I refitted it to the motor post prang it idled much more reliably and picked up more cleanly off load
with the slightly flattened cone than it ever had when pristine.
Do the big indents that clear the alpino centrestand mounts serve a purpose or are they just for clearance?
Years ago I spoke to Mike Waugh about the Supertrapp option but he didn't think it warranted the set up time
for any benefit it gave.
Just fishing for feedback to avoid wasting time.

 

[bob]

The Laverda Corse 500s run 2 into 1s or 2 into 2s, depending on the circuit. The 2 into 2 gives more top speed and the 2 into 1 gives better midrange for twisty circuits.
The original Sito exhaust is pretty efficient and makes good power but the more modern Laverda Corse systems will make the same power but without the anti social racket.

I don't think any science went into the flats hammered into the Sito system, they're in the wrong place to make any difference to the exhaust characteristics. It wouldn't make much sense to accelerate the gases at that point and then let them slow down again before accelerating them again through the reverse cone. Or would it....?

 

[sonicboom500]

The damaged/corroded systems I have both have dished reccesses about 35 x 50mm just at the kink in the pipe.
I was wondering at their positioning opposite the crossover from the other cylinder pinching in the opening taper from the downpipes
to about the pre taper volume for the post kink mega.

I had also wondered about a Zane type crossover being a tidier (easier) option and allowing a bit more cooling for the sump but it would rob
internal volume from the system.
Maybe just best to make up some alternatives and give them a go.
Thanks for the info Bob I know you make alternatives and they do look stunning. 
The local police force seem to reckon that a bright orange bike making a racket like that must be legal and don't seem that bothered with the noise.
Although having a quieter exhaust might mean not seeing everyone else leave from fuel stops at top speed so they didn't have to ride behind you.
Thanks