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Old 02-25-2010, 02:38 AM   #1
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Questions?? RB WS7 2 Engine Shaft

I have a .21 RB WS7 2, and at some point a previous owner has cut the end of the crank off. There is only the threads left where the clutch nut screws on, and it has an adapter nut but this only supports a two shoe fly wheel and my three shoe fly wheel won't fit like it should?

My question is where could I find a crank shaft second hand that is the same? do any other nova engine shafts share the same specs?? What are the specs?
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Old 02-25-2010, 03:50 AM   #2
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I don't think, other Novarossi cranks will fit.
The RB WS7II features a hard coated bi-turbo crank with a diameter of 13mm.
Maybe the S7 crank will fit, I'm not sure which diameter it has, but it has no bi-turbo feature and is not coated. WS7 and WS7 III cranks should fit as well. The WS7 series has a quite unique crank, I'd say.
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Old 02-25-2010, 06:51 AM   #3
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You really need to find a crank for a WS7 I, II, or III or even a WS9. Look around on ebay. You can also use a crank from an S5, S3, S7, Hobby9, or Junior9 but it may not perform quite as well as it would with the WS7/9 crank.
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Old 02-28-2010, 09:26 PM   #4
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Quote:
Originally Posted by Chris Peralta View Post
You really need to find a crank for a WS7 I, II, or III or even a WS9. Look around on ebay. You can also use a crank from an S5, S3, S7, Hobby9, or Junior9 but it may not perform quite as well as it would with the WS7/9 crank.
Thanks I have found a brand new one on ebay. Pretty cheap too. At this point should I change the front and rear crank bearings? I can feel a small amount of play in the back one?

Cheers
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Old 02-28-2010, 09:40 PM   #5
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Quote:
Originally Posted by Nitro1982 View Post
Thanks I have found a brand new one on ebay. Pretty cheap too. At this point should I change the front and rear crank bearings? I can feel a small amount of play in the back one?

Cheers
why not engines love new bearings TKO competition .com ,almost everyone at my track uses those.
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Old 03-01-2010, 05:46 AM   #6
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I agree, it never hurts to give an engine some fresh bearings. if your gona do it you midas well go with a ceramic main.
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