Scooterotica

Well Reflections back together with the moded RB225 as seen else where
So what Have I done well we’ll start with Inlet.

Fully opened up width & lowered to 100mm, plus opened up finger ports to transfers



Boost port fingers opened & angled greater, plus more port timings on them then transfers



Transfers angles altered to get more of a symmetrical feed as angles all over



Transfer base opened up and match but not all the way

Also MB Race tour piston used to over come the transfer / Exhaust short circuiting due to Asso Piston, as explained on here a while ago.Also put in 1mm holes in piston for aux exhaust bridge cooling.

The Exhaust well major mods opened up port area by fingering Exhaust auxiliaries
The Main & the Aux. both have increased port timings





Exhaust Franspeed RB Race

Shortened and flowed VHSB 34mm carb

Squish 1.5 CR @9.5 for all the s**t petrol out there.

Inlet manifold welded and opened up, as seen on here by others.

So what does it go like well all I can say is it pulls like a train & not lost any bottom end
seems very similar to the Std RB, once in power band it pulls like s**t off a shovel and goes through the 4.8 Ratio gears like there’s no tomorrow phenomenally quicker then Std RB and smooth.

Still running it in but can’t wait to put it against MAB’s RB250 which I’ve done for him with tweeks.

I’ve obviously not put full timings, areas on here at mo as I need to prove reliability and of course there's some things you never tell

Hopefully going to Doncaster at the weekend on her remember this is a rally going scoot
Will keep you upto date

Might even Dyno it

Smiffy

that looks really good smiffy...................
but what about the crank..................

sean brady scooters wrote:that looks really good smiffy...................
but what about the crank..................

Well at the mo its a MB race tour crank which should handle the power
Ill see about low PC crank later m8 when I get chance

I promise to stay in third smiffy so you can keep up

MAB.

MAB wrote:I promise to stay in third smiffy so you can keep up

MAB.

RinB wrote: Might even Dyno it

If you come to the garage on Sat, i'll squeeze you in.

You not worried about those thin exhaust bridges?

It better by quick or the plates off fella

drunkmunkey6969 wrote:

RinB wrote: Might even Dyno it

If you come to the garage on Sat, i'll squeeze you in.

You not worried about those thin exhaust bridges?

I need to run it and see how she goes before Dyno m8

As for bridges yep week point in equation but hey just have to see
If they go Ive got plan B already drawn up which will include welding and simular shaped port

MAB wrote:It better by quick or the plates off fella

Hey I cant build you a faster scoot then me m8, can I now

RinB wrote:I need to run it and see how she goes before Dyno m8

Not even a gentle mid range run through gears 1-4 to check torque and A/F??