smashing front sprockets

Thanks glen.HA HA .dam this is weeing me off.Got some good info off every one so far.Thanks fellas..Still scrathin me head but.

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6 bikes.
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one with RD top end kit.14/14 carby,carbon 3 stage fiber reeds,zx1 pipe
one with 55cc chainsaw top end, PBU pipe
ZX1 Taipan. PBU pipe,banshee engine.
Polini clutch bell .
2 X Banshees SHO
1 fitted with polini clutch,black widow triple stage reeds
19mm del rep carby,,billet head,billet reed cage, 6/76 gearing,sava tyres
1 fitted with 50cc BZM blata engine ,21mm walbro and BZM gold crank ( dangerous now:o)
1 blata SQ roller only
SRT Spooge Racing Team NTH Division

From the pic, it looks like it's shearing the shaft?

Glen hit the nail on the head with heat treating it, although i would personally look into getting another shaft made thats not over tempered.

1080 - 1084 metal or similar would be fairly strong when tempered right (a million japanese can't be wrong), although spring steel would be good too as it would offer some sort of flex (torsion) before it breaks (normal thin guage spring steel would require over 100lbs of force before it breaks - roughly), in normal applications springs or spring steel put under extreme loads will snap ... although again using spring steel it's still prone to how hot its tempered to.

Just remember how badly the titanic suffered when it came to crystals in the metal.

Another thing, are you running a chain tensioner ? or thought about adding one? i know the early british PB's had one but then again they also ran dual chains...

Just a thought ...

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Bikes:

2005 bravo X9 50cc
2006 bravo X9 110cc

http://www.gabgrafix.com - Custom Paint & Airbrushing

Its cause your a fat prick beans,roflmao

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Extensively modified Pollini powered Banshee pocket unicycle

FAT?? fat like a race horse or a mongrel dog

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55 cc head kit
Jet Pro pipe
19mm carby
3mm reed spacer
fiberglass reeds
Fullcircle crank
Quick turn throtle
Savas
Modded frame
Streetfighter front end

dyno proven 6hp

hey Pocket Wog.How are you going.Good to see you back.ME fat.Nope.70kg.I think i have worked it out.Goe easer on the throttle .I think the buzz of the wheel standing stuff will wear off.Smooth its the go.

__________________
6 bikes.
-----------
one with RD top end kit.14/14 carby,carbon 3 stage fiber reeds,zx1 pipe
one with 55cc chainsaw top end, PBU pipe
ZX1 Taipan. PBU pipe,banshee engine.
Polini clutch bell .
2 X Banshees SHO
1 fitted with polini clutch,black widow triple stage reeds
19mm del rep carby,,billet head,billet reed cage, 6/76 gearing,sava tyres
1 fitted with 50cc BZM blata engine ,21mm walbro and BZM gold crank ( dangerous now:o)
1 blata SQ roller only
SRT Spooge Racing Team NTH Division