Scooterotica

Foxy in Goole ran, or rather thrashed a Rapido 250 and loved it. Can't remember what he's running now, but he loved it.

Keep the TS1.

well i kept the ts1, the engine is back in and i had to fire it up today out of excitement.

the new spec is

71mm race tour piston
60mm alpha crank
240cc
unleaded low comp head recessed so no gaskets
lengthened barrel adding an extra cooling fin
i kept the 90s af ignition but may fit a heavier flywheel if constant road speed is an issue
b race stealth pipe
mbd inlet manifold modified and matched to take v force reeds
reedspeed 6 plate clutch
tmx35 with a breath sweet filter running under the diablo tank
its a race tour spec tune +

the plus is an experiment with the exhaust port, after pestering mark b and generally winging that the lambretta was not a 4 stroke ohc single or v twin he came up with a new shape exhaust port to produce torque which involved welding and filing and .....all that stuff that they do

the guys at Replay Scooters did a great job of putting it together for me and Chirio described it as "a work of art" paying compliment to marks work. From guys whos engines are at the front of the race circuit much of the time to make this comment about another tuners work.....I was pleasantly satisfied :bouncing:

Im short of wheels and tyres at the moment so fired it up on paint tins half expecting it to bounce around the shed but its silky smooth and sound well with the b race pipe and filtered carb.

i feel a bit sick tbh from the fumes but im well pleased so far. its taken a year of faffing to work out what i needed or wanted, i didnt end up with a Buelle engine fitted into a lammy but i hope the weekend will show that its not far off.

Thanks to Mr B and co at MBD, Chaulkie and Chirio at Replay Scooters and Simon at B-Race Tuning, all for suffering me. I 'm well pleased with the service and outcome from using these firms. They should all move to London where they are very much needed

Sounds as though its going to pull like a train.. would be interested to know what sort of cost someone like Mark b charges for that sort of bespoke work....mmmmm, bespoke

at first i thought it was quite a lot but once i took the cost of the parts and services out of the total then the "bespoke" part probably cost me a few hundread pound. the bill is itemised so nothing stands out as over priced although scooters seem to drink my money

the thing is its the second tune he has done for me, the last was in 96. so in the overall sceme of things its not a lot of money over that time.

i cant think of anything else that i could want for this scooter so it will probably stay as it is untill the MBD hydro rocket kit comes out in 2030


......oh yes i can......brakes and wheels

Supereibar wrote:Neither... go for a Bultaco 250 conversion ............ repair the TS1.

I was lead to believe that AF rayspeed had fitted these here single ring Bultaco pistons to an RB 250 to see how it might perform in the RB Group 6 sponsored race scooter... They look a very nice piston (Teflon coated) and from what I was told, not that expensive Considering...

Just my thoughts here and I don't know Bultaco's range but to my knowledge they only make Trials bikes.

Now, presuming they don't do Enduro's or ' Crosser's that means it's designed for a low revving engine. Obviously there'll be a safety margine built in but why would you use a piston designed for say 7,000 RPM if the kit could run well above that from what I understand?

cezeta wrote: the new spec is

71mm race tour piston
60mm alpha crank
240cc
unleaded low comp head recessed so no gaskets
lengthened barrel adding an extra cooling fin
i kept the 90s af ignition but may fit a heavier flywheel if constant road speed is an issue
b race stealth pipe
mbd inlet manifold modified and matched to take v force reeds
reedspeed 6 plate clutch
tmx35 with a breath sweet filter running under the diablo tank
its a race tour spec tune +

the plus is an experiment with the exhaust port, after pestering mark b and generally winging that the lambretta was not a 4 stroke ohc single or v twin he came up with a new shape exhaust port to produce torque which involved welding and filing and .....all that stuff that they do

Please tell us you're gonna get it dyno'd and post a graph - otherwise you'll suffer the wrath of Adspeed
It'll be interesting to see a comparison to the large cc Foxhat motors whenever we get to see something about one of them .......

Juan wrote:Just my thoughts here and I don't know Bultaco's range but to my knowledge they only make Trials bikes.

Now, presuming they don't do Enduro's or ' Crosser's that means it's designed for a low revving engine. Obviously there'll be a safety margine built in but why would you use a piston designed for say 7,000 RPM if the kit could run well above that from what I understand?

No, the piston I saw would have revved well past 7000 rpm with ease. Its a single ring performance piston, What model its off Im not sure, but one ring thats only about 1mm thick would be capable of a couple of thousand more revs, I would have thought.

Stokie wrote:

cezeta wrote: the new spec is

71mm race tour piston
60mm alpha crank
240cc
unleaded low comp head recessed so no gaskets
lengthened barrel adding an extra cooling fin
i kept the 90s af ignition but may fit a heavier flywheel if constant road speed is an issue
b race stealth pipe
mbd inlet manifold modified and matched to take v force reeds
reedspeed 6 plate clutch
tmx35 with a breath sweet filter running under the diablo tank
its a race tour spec tune +

the plus is an experiment with the exhaust port, after pestering mark b and generally winging that the lambretta was not a 4 stroke ohc single or v twin he came up with a new shape exhaust port to produce torque which involved welding and filing and .....all that stuff that they do

Please tell us you're gonna get it dyno'd and post a graph - otherwise you'll suffer the wrath of Adspeed
It'll be interesting to see a comparison to the large cc Foxhat motors whenever we get to see something about one of them .......

well peak bhp was the devils semen when this motor was built, i was going through a backlash from all the bhp quoters as i had realised that bhp was an utter waste of measurements as i already had a high bhp road race tune and it was a pile of poo. i dont race and nor do the other 3000 scooters riding down the same motorway as me so why were we all on road race tuned motors doing the same speeds as £200 rapidos.

so the spec was to de tune the ts1 and create usable torque while illuminating the weak spots like head gasket failure and refining the ride with a filtered carb balanced crank and lightened piston ect.

so im expecting a low bhp but im hoping to be able to tow a 6 berth caravan.

what im really hoping for is the power delivery of a suzuki drz400 which is a relatively tame 4 stroke single enduro bike that you can dump in any gear and will pull up a mountain. if it has NO power band then even better, constant power through the rev range is better than half of the rev range with nothing the a short burst.......ask the super bike v4 and v2 riders

i did consider the fox hat route http://scooterotica.org/tempforum/viewt ... ?f=7&t=422 but there just was not enough info out there about the conversions so maybe adspeed is right, they should publish a dyno gragh on the range of their tunes. i know what i want and its not bhp.....its big cc s lots of grunt low revs and a modern refined feel.

the combination of components i think have given me this, the breath easy filter kills some of the induction noise and kills any spit back that there may be, all the mbd parts work in harmony, v force reeds open early, and the b-race pipe delivers power very early but still has a kick at the end.

mbd have 64mm stroke alpha cranks in stock so if you fancy going bigger then there is scope there for something bigger. cc s rule so the foxhat boys are on the right road at least

ok, i had a couple of hours to play today. the ts1 pulls like a train but my only gripe was the irraticness pulling away as it was still needing lots of revs although it will pull away in 2nd so there is plenty of grunt.

so my axe fell in the area of the flywheel. it has an original af flywheel but i also have a ligntened and welded indian one and a welded full fat indian one.

so i weighed them, af=13g lightened indian 19g and full fat will marsh mello 27g

full fat made it ride well but took away the pickup too much the skinny af flywheel as you can imagine gives very nice agressive power but makes it impossible to ride like a jessy and remembering that mrs cezeta rides with me most of the time i had to be realistic as she does not go mad in town although she rides flat out on the motorways and a roads much to my frustration on the way back from iow....cow left me dead on my jet 200 and i could not catch her.

so on went the semi skimmed 19g flywheel. perfect compromise. i would say it would benafit from losing a bit more but it picks up well and allows very low revving in and out of the traffic riding.

so i think my search is over. i have my perfect ts1

just need to find a new hobby and forum now........