Dell'Orto phm40 60/1 slider questions??

78ducati · Post by **78ducati** » Sun Jul 10, 2011 1:03 pm

Can anyone explain me the numbers on the slide? I need to get new sliders for my PHM40 carbies, but need to get an understanding of the numbers, is 60/1 /2 /3 etc or 50/1 are those number in relation to the pump ramp? height and when to pump acceleration? can I make 50/1 a 60/1 with filling or grinding, or is it the opposite, in other words if I get 50/1 or 60/1 which of the 2 is more customizable?

Cheers...

machten · Post by **machten** » Sun Jul 10, 2011 8:29 pm

Here's what the numbers mean...

Kev

Ray O'Donohue · Post by **Ray O'Donohue** » Tue Jul 12, 2011 9:42 am

60/70,etc is the cutaway. Dash-1,dash 2,etc is the pump ramp timing. A 60-1 slide is the way to go for your bike,with the set screw for the pump adjusted to 5cc per 20 squirts.

Ray O'Donohue · Post by **Ray O'Donohue** » Tue Jul 12, 2011 9:44 am

You ould make a 60 out of a 50,etc.....sound like a bad idea.

78ducati · Post by **78ducati** » Tue Jul 12, 2011 10:00 am

and how do I go about setting 5cc with set screw?? is it amount of turns???

cheers...

thanks

Ray O'Donohue · Post by **Ray O'Donohue** » Tue Jul 12, 2011 10:05 am

Right.

78ducati · Post by **78ducati** » Tue Jul 12, 2011 12:20 pm

Ray O'Donohue so how many turns out from closed position you think its close enough?

thanks

Ray O'Donohue · Post by **Ray O'Donohue** » Fri Jul 15, 2011 8:45 am

I can't remember...it was AGES ago!