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Lillee
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PostPosted: Fri Dec 22, 2006 8:18 am 
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Look how much metal is on that puppy! I bet a lightenned verto is still 5kilos heavier than stock pre-verto :lol: :P

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drmini in aust
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PostPosted: Fri Dec 22, 2006 11:47 am 
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Verto clutch setup is weird compared to a normal Mini- flywheel is not bolted to the crank, the diaphragm is... :shock: :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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Morris 1100
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PostPosted: Fri Dec 22, 2006 12:05 pm 
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If you think they are strange you should see the clutch on an Austin Montego. :wink:
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DOZ
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PostPosted: Fri Dec 22, 2006 12:28 pm 
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Joined: Fri Jan 14, 2005 9:08 pm
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Location: Bris Vegas Occupation: Engineer
Yeah, I was a bit worried about the whole verto set-up, hence my re-engineering of the clutch slave cylinder and arm to use the old style (I needed the space)

DOZ

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dove grey 64
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PostPosted: Fri Dec 22, 2006 1:20 pm 
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never had an issue with the verto, but when i do im sure your all going to hear about it :D nearly 5 years and still going strong though, not bad

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roshane.nanayakkara
 Post subject: Re: Lightened flywheels
PostPosted: Sun May 17, 2020 3:24 am 
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drmini in aust wrote:
Matt TheMiniMan has done heaps like this, with holes in, he's never had one break.
Likewise GR.
My 1310 regularly saw 8000 on the track, no problem.

I think facing them off .200" is fine, I'm just wary of drilling big holes or (worse) milling slots thru them.
If you want it that light, go buy a steel one.....

BTW if turning them, make sure there's a nice big radius on the lathe tool, you don't want a sharp corner at bottom of cut. :wink:

And they MUST be rebalanced afterwards.
@drmini in aust do you have a past comment/explaination on how you do the balancing on these after machining?

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drmini in aust
 Post subject: Re: Lightened flywheels
PostPosted: Sun May 17, 2020 8:26 am 
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roshane.nanayakkara wrote:
drmini in aust wrote:
Matt TheMiniMan has done heaps like this, with holes in, he's never had one break.
Likewise GR.
My 1310 regularly saw 8000 on the track, no problem.

I think facing them off .200" is fine, I'm just wary of drilling big holes or (worse) milling slots thru them.
If you want it that light, go buy a steel one.....

BTW if turning them, make sure there's a nice big radius on the lathe tool, you don't want a sharp corner at bottom of cut. :wink:

And they MUST be rebalanced afterwards.
@drmini in aust do you have a past comment/explaination on how you do the balancing on these after machining?

Sent from my HD1901 using Tapatalk

I am retired now but I used to take them to Graham Russell. With or without a crank.
He balances the crank or uses his own,
Then bolts flywheel on and balances that, then adds the backplate and does it too, finally adds the diaphragm, uses which of 3 positions that shows best assembly balance. This all done on a dynamic balancer.

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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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roshane.nanayakkara
 Post subject: Re: Lightened flywheels
PostPosted: Sun May 17, 2020 12:00 pm 
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drmini in aust wrote:
roshane.nanayakkara wrote:
drmini in aust wrote:
Matt TheMiniMan has done heaps like this, with holes in, he's never had one break.
Likewise GR.
My 1310 regularly saw 8000 on the track, no problem.

I think facing them off .200" is fine, I'm just wary of drilling big holes or (worse) milling slots thru them.
If you want it that light, go buy a steel one.....

BTW if turning them, make sure there's a nice big radius on the lathe tool, you don't want a sharp corner at bottom of cut. :wink:

And they MUST be rebalanced afterwards.
@drmini in aust do you have a past comment/explaination on how you do the balancing on these after machining?

Sent from my HD1901 using Tapatalk

I am retired now but I used to take them to Graham Russell. With or without a crank.
He balances the crank or uses his own,
Then bolts flywheel on and balances that, then adds the backplate and does it too, finally adds the diaphragm, uses which of 3 positions that shows best assembly balance. This all done on a dynamic balancer.
Ahhh makes sense Doc. Thank you.

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roshane.nanayakkara
 Post subject: Re: Lightened flywheels
PostPosted: Sun May 17, 2020 3:28 pm 
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willy wrote:
GR is doing my flywheel.
I have heard a one-piece is desirable, as it does not tend to 'weld' onto the taper of the crank, due to the big difference in metal types.
So I will hunt down a one-piece before Friday when I fly over to Syd :lol:

I am taking a backing plate too, he is lightening that also.
Might have been a freak incident but I had a 1 piece off my 1300GT engine weld itself to the crank making both parts unusable.

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hpal
 Post subject: Re: Lightened flywheels
PostPosted: Sun May 17, 2020 6:26 pm 
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Joined: Fri Jul 21, 2017 1:14 pm
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Location: Branxton, NSW
This is what I’ve just finished the other day, similar to what Matt Read does only the slow way by hand. It came in at roughly 13lb. Just going on a road car, 1150cc with supercharger.


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https://www.ausmini.com/forums/viewtopic.php?f=3&t=95872
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IndigoBlueCooperS
 Post subject: Re: Lightened flywheels
PostPosted: Sun May 17, 2020 9:34 pm 
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Posts: 860
Location: Adelaide
Anyone have experiance with the MED ST2 Ultra Light Assembly?

£329.17 EXC VAT
Includes pressure plate, clutch plate and orange diaphragm, "for fast road and trackday Minis. Expertly assembled and balanced, ready to fit".
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