Hi everyone

(Appologies for my bad English and for posting something probably already discussed; I did not find what I am after, though)

I want to replace an old (don't know the exact year) RST tr pro i sl 7 with a rigid fork. Now my concerns:

1.- Anyone happens to know the exact geometry of that RST fork? I wrote to RST customer service to no avail.

2.- The AtC is 47cm. Assuming a 10% sag, the new fork should be around 42cm long, shouldn't it?

3.- What about the rake? How can I measure it? Maybe with a plumb?

Thank you in advance,