diference between brake drum

[sidvespa]

sorry i have to go in englisch my german is not so good

what is the diference between the brake drum from a vespa with the oil seal inside the engine and a brum with the oil seal on the outside of the engine

if it coud with the mesurements

thanks sidvespa

[nop]

the drum for a "seal inside engine" has not necessarily a face for the seal to run on, most of them have a rough cast surface there - a drum is typically for a "seal outside engine" if it has a machined surface for the seal to run on.

[amazombi]

apart from what has been said already the brakes are identical, at least in terms of brake shoes, dimensions of levers, drumm size etc.etc.

[sidvespa]

so you can use a drum from an oil seal out-side engine on a oil seal in-side engine?

and thanks for the quick reply

[nop]

yes, you can. but check if you plan to do it vice-versa!