Scooterotica

I used the TS1 piston from Ron with the twin windows, I can't see them on his site now. Possibly the same as the Pro Porting piston from Harry B, both Mitaka I think. I enlarged the cutout on the skirt to more of a half moon shape too as advised by AF.

Any other dealers in UK sell 'um?

psychedelicropcircle wrote:^ yes but the avanti likes a bit spitback....the valve will pay for itself and the mess goes with it! I used an lth had someone do it for me...if you fit a 60/110 crank it's minimal work to get it to fit.

a bit of time spent jetting will eradicate almost all the spit back and on a recent run back from AFs my avanti returned the best fuel consumption out of 5 225s

What set up are you running Jazzy?

Nk road the one with the extra long downpipe.
30mm PHBH open.
4.6 li 150
17 degree fixed

i was running 65 pilot but this was causing the spit back and poor economy, coming back from AFs we did motorway and i was on the needle cruising 65+ gps and it bettered the others a couple of which were ts1s.

I've safely run a 55 pilot for loads of miles, but found the bigger pilot gave more low down grunt.
it crosses my mind that the extra cooling benefits of large finnage gives a much wider safe/ usable jetting range. it might be that unlike a iron or standard finned kit (ts rt etc.) where the you jet for the right plug colour and there's little else you can do. there are options to exploit different characteristics that altered jetting can offer.

Worn rings, bores, pistons etc promote spit back as well. My RT was unusable, constant flooding in the breathsweet. Untill i changed the piston (excessive wear due to contaminates from a welded tank)

The above are only my thoughts from my own experiences. also my open mouth ts1's spit back just haven't spent the same time on them.

^... thanks for the info. I can't remember what is in mine (30 PHBH with remote filter) but it is somewhere between 50 and 55.

The drain didn't work then Dapper...?!

Architecten wrote:The drain didn't work then Dapper...?!

No,no, all fitted but not had a run on her yet as I'm a soft southern b@5t@rd It's just that I'm thinking of fitting the reed valve to improve performance and fool economy

Heh! To be fair I shedded mine just before Christmas and haven't rode it this year yet, roads have been a bit icy... Taking the opportunity for a bit of winter maintenance...!!!

dapper wrote:not had a run on her yet as I'm a soft southern b@5t@rd It's just that I'm thinking of fitting the reed valve to improve performance and fool economy

Not running it will improve the fuel economy no end and cheaper than a reed valve