Modern Vespa

At EIMCA in Milaan DrP introduced the Flying roller

btw i've arrived bak home

This looks interesting,
I assume the point of wear would be the "Plastic or Nylon" vs the roller itself.
I wonder due to the lack of complete coverage like DR Pulley, if they could crack over time and have early failure?

I have tried both DR Pulley's and Stock, and to be honest I can't really tell that much huge of a difference based on my use. I have observed when replacing the "Sliders", they require some break in period to allow the RPM's to drop back to the norm. When they are new, the RPM's run a higher.

Thanks for Sharing,
Keith
Marietta, GA

This is interesting. Thanks for the update. What's supposed to be the benefit? Smoother starts? Longer wear?

Hope you had a good visit over here.

I imagine the benefit is that the centre brass weight doesn't have to be replaced - only the outer shell if/when it has worn. This should make replacements a lot cheaper to manufacture and ship, plus it's more environmentally sympathetic. A win-win.

Glad some smart people are trying to improve on an age old design. Their sliders are a definite improvement and this next step is interesting.

I am thinking this is not Dr. Pulley but Tech Pulley.

Little something more going on in the design. Notice than when the brass weight starts to move the plastic will roll until the lip comes in contact. They need to show the contact with the fixed piece the slider pushes against and a sequence of pictures of how it moves. An explanation of benefit vs our expert assumptions would also be good.

There is a better way to most designs just waiting for someone to think of it.

Read more about it here: http://www.techpulley.com/EN_FR_how_it_works.html

They don't appear to offer them for MP3s...

http://www.techpulley.com/TechPulley%20Flying%20Roller%20Weight%20vs.%20Scooter%20Models.pdf

John

Higher revs for takeoff...

Lower revs for higher top speed...

Sounds great so far.

Hmmmmmm...interesting. If they make them in the right size, the lack of an actual MP3 version should be irrelevant, yes?

looks like the FR2522 is what will work according to tech pulley

A search brought me to this thread I had missed until now. Has anyone tried these yet?

Maksor chime in please

they are only for 50cc engines a option is to fill your Cylinder so it will be a 50cc

I saw some listed for the Beverly 500 LT on their website.

your right they got more now but nothing for the mp3

the one for the Bev are the old ones FR2522 25 x 22.2
and no 25x17

I know the 25 x 17s are what many people feel is optimal for the DPs. Are you sure the same applies to these newfangled contraptions?

25x17 is the seize 25mm by 17mm and have 8 weights and 19 (400) 21(500cc)
the older 460cc engines got 25x22 and do have 6 weights 27gram as stock

i've listed them on my site

SP2517/8 xxGr + SP2517-P
and the
older one

SP2522/6 xxgr + SP2517-p but then you have on3 SP left over the old vario uses 3 SP's