1981 ATC185S / ATC70 front brake

[justmefilm]

Looking for the bolt pattern measurements of a 1981 ATC185S front hub...the model with no front suspension and a three bolt hub. Want to add a drum style front brake to my '84 ATC70.
Thanks
Rick

[shortline10]

Hub is 3 x 100mm for the early s model .
It’s the same bolt pattern as the atc70 .

[HairyJR]

Shortline was close, wheel hub bolt circle is 3 x 100mm. Find this an interesting modification, please post up your completed project. The s hub will need to be modified to keep the wheel centered.

"HJ" 264092 :beer

[justmefilm]

Thanks for your help !