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Triumph Trials Cub Gearbox Sizes

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Would anybody have written down what the ammount of teeth on 1st 2nd 3rd and 4th on Cub trials gearbox, plus front primary, and chain front and back

had everything written down myself and put away somewhere, and now cannot find the stuff☹️

Vinnie

4 hours ago, vinnied said:

Would anybody have written down what the ammount of teeth on 1st 2nd 3rd and 4th on Cub trials gearbox, plus front primary, and chain front and back

had everything written down myself and put away somewhere, and now cannot find the stuff☹️

Vinnie

the 4th is 29  sleeve gear layshaft is16 .bob upb he supplies lower 2nd gears that used on standard 4th 28th sleeve gear if you look at upb web site I don't know primary size gear somebody else may reply I been looking in mike estall tiger cub bible my front gearbox spocket is 16 I don't know back its bit high gear if go 15 14 it be right not good on road I have no access plate how can cut it out in suite or best strip down done on a mill

its says 3rd wide mainshaft 25 layshaft 20 .1st and 2nd standard I have a set of trials gear in my hand yes right to the tr20 I wonder what is wrong with my cub none matching gears it slips and jumps like slipping chain I have  not check that 

I run a 200 cub using low 1st and 2nd Sleeve gear 29 matched to 16 on the lay shaft 2nd gear 26 on the lay 19 on the main 3rd 25 main 20 lay then 16 main 29 lay this gear does the kick start Watch putting the sliding gears ( if using standard gears ) on they look the same but do not fit the same One has grooves cut in the dogs that fits the kick start gear Easy put in wrong I have done it when I was in a hurry It will not select properly

my kickstart gear is sloppy anything to do why its jumping in 3rd I have good set of std gears good job pinch kickstart gear then try get new bush ring Greystone or  Meriden who best 

That is the gear the sliding gear dogs on the lay shaft lock in to so if it is slack it will jump out Is the gear or dogs worn ? 

hi can you send a pick of 3rd with groove cut into the dogs ring see I can get a new bush for the first gear kickstart there not a lot of  youtube  proper rebuilds on cubs and making doing the ness mods making them better  

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