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| Lightening Flywheels https://www.ausmini.com/forums/viewtopic.php?f=2&t=28969 |
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| Author: | Wombat [ Thu Mar 08, 2007 9:31 am ] |
| Post subject: | Lightening Flywheels |
In my digging into info re the lightening of flywheels I see that Vizard says that they weigh 28lbs/12.7Kg with 1300's being 32lb/14.5kg. (includes backplate) I presume he is refering to English made flywheels. I have two flywheels I'm considering to use, one is a solid one the other a two piece and I presume Australian made. They both weigh 10.0Kg or 22lbs. Vizards says to aim for 18-19lbs/8.2-8.6kg It appears on that limited observation that Australian flywheels are "halfway" lightened ie falling halfway between the English made flywheels and Vizards recommended for modifying original. I intend to follow the Doc's advice and take 0.200" off the back of one of them(probably the solid one) and will let you know how much lighter it ends up. |
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| Author: | Wombat [ Fri Apr 20, 2007 3:32 pm ] |
| Post subject: | |
Finally got the fly wheel back from the engineers. They took the 0.200" of the back per Dr Mini/Vizard and cut a groove 19mm wide 5mm deep with 2mm radius in the back of the backing plate per GR (and balanced the lot) Now weighs in at 8.4Kg ie 1.6Kg lighter 300gm of that was off the backplate so shaving 0.200" off the flywheel = 1.3Kg Cost Lightening,faceing and balance = $88 lighten back plate = $80 balance flywheel/crank/harmonic balancer as a unit $155 all plus GST |
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| Author: | Mike_Byron [ Fri Apr 20, 2007 3:38 pm ] |
| Post subject: | |
David I hope that they put paint (or something) on the points that must line up to sustain the balance ?? |
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| Author: | Wombat [ Fri Apr 20, 2007 3:39 pm ] |
| Post subject: | |
yep and abc the posts and transfered the timing marks with nice new punch marks and numbers |
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