This model may be too fast for the raw beginner (5)
I believe the answer is:
racer
'this model may be too fast' is the definition.
The definition and answer can be both man-made objects as well as being singular nouns.
I also know that 'fast' relates to this answer.
'for the raw beginner' is the wordplay.
'for' becomes 'race' (I can't explain this - if you can you should believe this answer much more).
'beginner' says to take the initial letters.
The initial letter of 'raw' is 'r'.
'race'+'r'='RACER'
Can you help me to learn more?
(Other definitions for racer that I've seen before include "sportsman" , "Fast competitive car or animal" , "Fast driver" , "Greyhound" , "Fast-moving animal" .)