Short belt life, 150cc 6YG
Hi Bige & Tom,
Thanks for your advice so far, here are the technical details:
Twister Hammerhead, 150cc 6YG short case (230mm crs), about 6 years old, bought second hand.
Fitted 115mm variator with 13gm weights, clutch drum 125mm, driven pulley 142.5mm
Spring for driven pulley 54mm long and 97lb load when in low, 39 long and 128lb load when in high.
GEARING: Small sprocket 16 tooth, large sprocket 39 tooth (2.44 ratio). The overall gearing works out to 21 turns clutch drum to 1 wheel turn. When flat out on stand the wheels turn at 610 rpm = approx 38 MPH.
I think the gearing is far to high. The buggy is driven mostly on level grass land, max achievabel speed 15 to 20 mph.
The belt alignement is good +- 0.5mm. The 743-20-30 belt runs 10mm into the driven pulley at idle(new belt, only 30 seconds driving)
WHAT SHOULD I TRY NEXT? Thanks for your help. Best regards, David.
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