Varitronic flywheel
- ArmandTanzarian
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- Joined: Wed Jan 07, 2009 6:26 pm
- Location: Kent
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How are you going to balance it. Surely it'll vibrate like a b@stard unless it's spot on.KCB wrote: So I have ordered a sil boss and am going to attempt to repair it.
Cheers.
Meus Lambretta est non infractus. Is est quietus.
Quick update.
Here is the newly rebossed flywheel (with a new fan):

And here is my new fashioned flywheel holder:

and how the holder fits the flywheel:

All timed up now and ready to test.
My advice to anyone with a Varitronic ignition is to clean the threads on the boss very carefully before inserting a puller.
They seem to be made of cheese and strip very easily.
Upgrade to a new SIL boss if you have the patience to fettle it.
Cheers, and thanks to everyone's who gave advise in this post.
Here is the newly rebossed flywheel (with a new fan):

And here is my new fashioned flywheel holder:

and how the holder fits the flywheel:

All timed up now and ready to test.
My advice to anyone with a Varitronic ignition is to clean the threads on the boss very carefully before inserting a puller.
They seem to be made of cheese and strip very easily.
Upgrade to a new SIL boss if you have the patience to fettle it.
Cheers, and thanks to everyone's who gave advise in this post.
Did the holes line up ok or did you need to redrill some of the holes?
I've used one of these bosses on a sil flywheel and was easy fit, just needed to tap the holes in the flywheel to screw bolts in for a nice tight fit.
Has the keyway lined up in the same position?
Did the old rivets take much removing? Which way did you find best?
sorry for all the questions but I've got in my possession a varitronic flywheel with a faulty boss.
cheers ove.
I've used one of these bosses on a sil flywheel and was easy fit, just needed to tap the holes in the flywheel to screw bolts in for a nice tight fit.
Has the keyway lined up in the same position?
Did the old rivets take much removing? Which way did you find best?
sorry for all the questions but I've got in my possession a varitronic flywheel with a faulty boss.
cheers ove.
- Toddy
- registered user
- Posts: 6327
- Joined: Sun Mar 08, 2009 12:01 am
- Main scooter: Lambretta Series 1
- Location: East Yorkshire
- Contact:
ove wrote:Did the holes line up ok or did you need to redrill some of the holes?
I've used one of these bosses on a sil flywheel and was easy fit, just needed to tap the holes in the flywheel to screw bolts in for a nice tight fit.
Has the keyway lined up in the same position?
Did the old rivets take much removing? Which way did you find best?
sorry for all the questions but I've got in my possession a varitronic flywheel with a faulty boss.
cheers ove.
Always best to ask
As my Dad used to say "Each to their own lad"
Did the holes line up ok or did you need to redrill some of the holes?ove wrote:Did the holes line up ok or did you need to redrill some of the holes?
I've used one of these bosses on a sil flywheel and was easy fit, just needed to tap the holes in the flywheel to screw bolts in for a nice tight fit.
Has the keyway lined up in the same position?
Did the old rivets take much removing? Which way did you find best?
sorry for all the questions but I've got in my possession a varitronic flywheel with a faulty boss.
cheers ove.
No, 2 of the holes lined up, the rest had to be drilled (the Varitronic only having 6 rivets instead of the 8 on the new boss) or part covered holes enlarged
Has the keyway lined up in the same position?
Keyway was slightly off by a couple of mm, so just marked a new TDC point using the stop method and retimed
Did the old rivets take much removing? Which way did you find best?
Not really, just drilled them out with a pillar drill
Hope those answers were useful to you
Cheers
Thanks KCB
KCB have you tested it yet? Is all ok?
cheers ove
cheers ove
Just tested going down the road half a mile, not thrashed it as yet but all looking ok so far.
Cheers.
Cheers.
