the long first gear is ok for solo racers,this would be the the advantage of a 5 speed ,the two up rider can use first gear,the solo racer can set off in second for a long start gear and then close ratios for racing and keeping the motor in the power band.
i have tinno sacchi 5 speed this is quite a good box although i darn,t abuse it ,i had a rospeed box when i was a lad and that spit a tooth of and came through the case,not a good moment.
five speed box
10-12-15-19-21
50-42-39-35-33
i worked out the gears to be stock lambretta items
1.gp200 italian
2.gp200 italian
3.gp200 italian
4.gp150 italian
5.sx200 italian
that gear box plays a very important part on the small single cylinder engine and races are won on the correct selection not just power ,the use of the origional gears on a square or hexagonal tree would enable us to use the old lambretta gear patterns to make a box up to suit your surcumstances.
a four speed box is not going to be that much better than its origional counterpart other than it will be stronger,
regards
joe
THE NEW DGB LAMBRETTA GEAR BOX
Hi Dave, any updates?
^^^^^^ Wot he said^^^^^^
well as u no i cut a gearbox for the dacboys,
they did some miles with it in, but it did not last,with 2 teeth for first gear,well i think as THAY HAVE NOT SENT IT BACK TO ME,and its been a long time,
so made one gear for someome with a motorbike out of EN36 as per the stuff that i was going to use for the gearbox,
when he puts it in the fcuking come off,so i dont no what to do now,
all i no is i can cut gears,which i dont think has been done before,
they did some miles with it in, but it did not last,with 2 teeth for first gear,well i think as THAY HAVE NOT SENT IT BACK TO ME,and its been a long time,
so made one gear for someome with a motorbike out of EN36 as per the stuff that i was going to use for the gearbox,
when he puts it in the fcuking come off,so i dont no what to do now,
all i no is i can cut gears,which i dont think has been done before,
still not got it back ??. i will ask tomorrow when i go down . will report back. have you tried ringing dave?
Himark wrote:still not got it back ??. i will ask tomorrow when i go down . will report back. have you tried ringing dave?
yes i did send him a text,and i have rung chris,but still not sent it back,
understand dave has the broken gear but has mislaid the rest at the mo 
how would that helpSaxman wrote:Get rid of the gears, put a belt in it
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