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gafmo
 Post subject: 1100S fly wheel
PostPosted: Fri Mar 04, 2005 3:13 pm 
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http://cgi.ebay.com.au/ws/eBayISAPI.dll ... 65952&rd=1

It does say lightened but I have not seen it done like this

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drmini in aust
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PostPosted: Fri Mar 04, 2005 3:22 pm 
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Yeah I've seen GR do them like that. For race motors.
But- really if you want one that light and are gonna rev it hard, a steel one is safer. Remember where your nuts are! :shock:

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DrMini- 1970 wasaMatic 1360, Mk1S crank, 86.6HP (ATW) =~125 @ crank, 45 Dellorto (38 chokes), RE282 sprint cam, 1.5 rockers, 11.0:1 C/R. :mrgreen:
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aaron
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PostPosted: Fri Mar 04, 2005 3:30 pm 
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i wouldn't want to be on the recieving end of one letting go! ouch!

Cheers

Aaron

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gafmo
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PostPosted: Fri Mar 04, 2005 3:54 pm 
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Nor Me... :shock: :cry:

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benjamin
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PostPosted: Fri Mar 04, 2005 4:55 pm 
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would it really break?
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drmini in aust
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PostPosted: Fri Mar 04, 2005 5:57 pm 
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Can do. Stock flywheels are grey cast iron, not real strong stuff. Made less strong when people bash them off with a BFH and other improvised methods.
All it takes is a crack... and they do make a mess of everything if they go bang! at high rpm. :cry: In a Mini, this includes you due to its location.
Many race cars wear steel scatter shields around the flywheel for this reason.

:idea: Lets all convert our Minis to LHD! :lol:

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DrMini- 1970 wasaMatic 1360, Mk1S crank, 86.6HP (ATW) =~125 @ crank, 45 Dellorto (38 chokes), RE282 sprint cam, 1.5 rockers, 11.0:1 C/R. :mrgreen:
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benjamin
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PostPosted: Fri Mar 04, 2005 7:25 pm 
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so proper lightened flywheels are made from a different material to stop that happening
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Zizzle
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PostPosted: Fri Mar 04, 2005 7:38 pm 
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Just thinking about the rotational velocity on the outside of the flywheel @ 8000rpm.

Guess diameter to be ~40cm, therefore circumference 1.256m

8000rpm x 1.256m per rev = 10048 m per min = 602km/hr

Yep a chunk of cast iron with that much kinetic engergy wouldn't tickle in your lap :D

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drmini in aust
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PostPosted: Fri Mar 04, 2005 9:09 pm 
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benjamin wrote:
so proper lightened flywheels are made from a different material to stop that happening

Race ones are made from steel, or alloy with steel inserts.

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DrMini- 1970 wasaMatic 1360, Mk1S crank, 86.6HP (ATW) =~125 @ crank, 45 Dellorto (38 chokes), RE282 sprint cam, 1.5 rockers, 11.0:1 C/R. :mrgreen:
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