Fly Wheel lightening ?
- lloydie
- Posts: 20923
- Joined: Mon Jan 17, 2011 11:16 pm
- Location: In the garage somewhere in Coventry
Re: Fly Wheel lightening ?
When you fit that it will spin up super fast !!!
Re: Fly Wheel lightening ?
I was hoping to beat Carl's light one but it was a bit of a fluke to be honest, as once it (the flywheel) has been removed it would of required an new bolt to centre & I ain't got one.lloydie wrote:When you fit that it will spin up super fast !!!
Has anyone ripped one apart just to see how thick the magnet basket is or do we keep going until someone loses a foot?
Just hope its not gona be me
Big thanks to my mate for letting me use his machine, top bloke
- lloydie
- Posts: 20923
- Joined: Mon Jan 17, 2011 11:16 pm
- Location: In the garage somewhere in Coventry
Re: Fly Wheel lightening ?
The pic I posted of Benny's fly wheel was the limit as Benny scrapped a few to find out
Re: Fly Wheel lightening ?
I had turned it to 136mm⌀ as Benny's/your diagram advises, but then emery clothed & scotch padded the finish.
That process took 0.2mm off again, which is only 0.1mm off the radius... oops.
The bowl now measures 135.8mm⌀ & the flywheel weight is down to 114.8mm⌀.
I would just like to know what the original basket thickness is before I fit it
That process took 0.2mm off again, which is only 0.1mm off the radius... oops.
The bowl now measures 135.8mm⌀ & the flywheel weight is down to 114.8mm⌀.
I would just like to know what the original basket thickness is before I fit it
- lloydie
- Posts: 20923
- Joined: Mon Jan 17, 2011 11:16 pm
- Location: In the garage somewhere in Coventry
Re: Fly Wheel lightening ?
Drill one to find out
Re: Fly Wheel lightening ?
I am out of VTR ones now....lloydie wrote:Drill one to find out
Any one got a knackered one spare & would like to share the info??
Re: Fly Wheel lightening ?
Only another 4.4 gms to go
(:-})
(:-})
==============================Enter the Darkside
Re: Fly Wheel lightening ?
rite just so i got this in my head one last time..... do you strip the weight of the back or the basket and cut them down as separates and bolt them back together again?
the older i get,the faster i was
Re: Fly Wheel lightening ?
No, leave the rivets well alonefabiostar wrote:rite just so i got this in my head one last time..... do you strip the weight of the back or the basket and cut them down as separates and bolt them back together again?
I cut it as one piece, taking care not to cut into the back of the magnet bowl.
I cut the tail off the crank with a 9" grinder, trying to keep as much of the main as possible. Then tighten the chuck on the main bearing.
I then place the DTI gauge on the crank tail section just after the fat end of the keyway (not the sprag section). spin & tap till the DTI gauge shows "0" runout. This requires patience, but is possible.
Once the crank is running true place the flywheel on the taper & nip up the bolt. Place the DTI gauge on the weight section & spin by hand again making sure the gauge still has "0" run out.
If the gauge still shows "0" run out, I then centre drill the bolt, & wind in the live centre in to support the crank tail & stop harmonics.
I then cut away 0.3mm at a time till I reach the desired diameter. Once I am close to the required size, I tidy it up with small cuts & emery paper/scotch pad smooth.
When the Varadero flywheel was clocked with the DTI gauge the weight was true but the basket was out slightly (0.2mm), so I never touched the basket.
With the Vtr flywheel the weight & the basket were running true so I cut the basket also
Re: Fly Wheel lightening ?
happy days that has explained it.. cheers sir..
without using the end of an old crank have you or anybody turned down a flywheel holding it any other way? can it be held say using the chuck jews on the inside as in the magnets?
without using the end of an old crank have you or anybody turned down a flywheel holding it any other way? can it be held say using the chuck jews on the inside as in the magnets?
the older i get,the faster i was
Re: Fly Wheel lightening ?
I asked similar questions & was warned not tofabiostar wrote:without using the end of an old crank have you or anybody turned down a flywheel holding it any other way? can it be held say using the chuck jews on the inside as in the magnets?
If you were to hold it with the basket, you would have to use a 4 jaw chuck & DTI the weight section to "0" run out then cut it
It might be okay? It would have to be your call though.
Re: Fly Wheel lightening ?
ay i was a bit worried about that. i had mine to an enineering shop and thats how he wanted to do it so decided not to use there services...
the older i get,the faster i was
Re: Fly Wheel lightening ?
Same thing here, basket is always out of true.. I skim all of them now, or take down a bit depending on what is wanted for a final weight.gl_s_r wrote:Yes the basket was out but i skimmed that up as part of the job anyway to make sure it wasn't a problem when removing any balancing holes..
Of note.. I found that using a crankshaft snout as a mandril and a bolt to tighten and as a place for the live center was problematic,, The bolt is not designed to be center to the axis of the crank,, it's close, but not great,, so reusing a bolt and the countersink hole for the live center produced an off center setup.
The fix was a completely new flywheel mounting system
Marquez Motorcycle Services
Solutions to recurring maintenance
Race/Adventure ride event prep
Post event services
Total Rider
Your path to a TX motorcycle license
And advanced Rider training
Solutions to recurring maintenance
Race/Adventure ride event prep
Post event services
Total Rider
Your path to a TX motorcycle license
And advanced Rider training
Re: Fly Wheel lightening ?
That is how I cut mine...... using a "Buch Chuck" then adj for "0" run out and you are good to go.Varastorm wrote:I asked similar questions & was warned not tofabiostar wrote:without using the end of an old crank have you or anybody turned down a flywheel holding it any other way? can it be held say using the chuck jews on the inside as in the magnets?
If you were to hold it with the basket, you would have to use a 4 jaw chuck & DTI the weight section to "0" run out then cut it
It might be okay? It would have to be your call though.
At least that is how I did them.
Loud pipes don't save lives, knowing how to ride your bike will save your life.