Vespa 125 Nuova Restoration

Two wheels good.

Re: Vespa 125 Nuova Restoration

Post by Il Duce @ Sat Jun 16, 2018 9:42 am

The consensus of opinion is that the crankside bearing isn't mounted perfectly straight on the crank and is well known as being an utter bastard to fit correctly.
I've purchased the solution:

Image

It's a 2 part bearing. The plain bit is mounted into the case and the roller bit is mounted onto the crank.
Apparently they slip together quite easily when you close the engine.

If I'd known all this 3 months ago the bastard would have been finished by now.
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Re: Vespa 125 Nuova Restoration

Post by Dirk @ Sun Jun 17, 2018 9:30 am

For the sake of accuracy, it should be
Il Duce wrote:
If I'd known all this 3 months ago the bastard would have moved on to some other fcuking problem that I would be swearing at by now.
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Re: Vespa 125 Nuova Restoration

Post by Il Duce @ Mon Jun 18, 2018 9:40 am

Dirk wrote:For the sake of accuracy, it should be
Il Duce wrote:
If I'd known all this 3 months ago the bastard would have moved on to some other fcuking problem that I would be swearing at by now.


Hmmm. Hadn't thought of that.
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Re: Vespa 125 Nuova Restoration

Post by Il Duce @ Fri Jun 22, 2018 9:11 am

My bearing remover arrived and the bearing was duly removed. Took a little heating and freezing but eventually it popped off. Excellent!

The new 2 piece bearing also arrived. I heated the bearing seat in the engine case with a blowtorch. Whilst I was doing that I thought " hmmm I've a spare hand, I know, I'll put the bearing on the bench and freeze it with spray freeze"

Heat heat.
Spray spray.
Heat heat.
WOOOOOOOFFF!

And that's how the whole bench turned into a barbecue.
Yes. If you read the back of the "freeze your nuts off" tin, it tells you it's flammable.

Luckily the fumes burned off after about 5 seconds (that's a long time when it's a fire) and went out but I'd like to award myself a Darwin prize.


Anyway, bearing went in like a dream. Engine cases reassembled and it turns beautifully. Clutch in. Clutch cover on. Head on. Rear brakes on. Rear hub on. Exhaust bend on. And we end up with this:

Image

Exactly where I was 2 months ago but with a motor that isn't jammed.
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Re: Vespa 125 Nuova Restoration

Post by S1K @ Fri Jun 22, 2018 9:20 am

Excellent news. Should be all ready for the big fight at the seaside with the rockers on August Bank Holiday.
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Re: Vespa 125 Nuova Restoration

Post by Il Duce @ Fri Jun 22, 2018 9:26 am

S1K wrote:Excellent news. Should be all ready for the big fight at the seaside with the rockers on August Bank Holiday.


Thankfully Barry Island is only 15 minutes away, or 3 hours when you're pushing it.
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Re: Vespa 125 Nuova Restoration

Post by Deuteronomy @ Fri Jun 22, 2018 11:31 am

This is good news ID!
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Re: Vespa 125 Nuova Restoration

Post by Il Duce @ Fri Jun 22, 2018 11:51 am

Deuteronomy wrote:This is good news ID!


Yes. It must have been getting boring. Now we can look forward to a different problem.
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Re: Vespa 125 Nuova Restoration

Post by manfromdelmonte @ Fri Jun 22, 2018 4:47 pm

Great work.

Especially the conflagration.

It's going to be a bloody good feeling when you ride that thing faultlessly down the road.
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Re: Vespa 125 Nuova Restoration

Post by Il Duce @ Fri Jun 22, 2018 5:24 pm

manfromdelmonte wrote:Great work.

Especially the conflagration.

It's going to be a bloody good feeling when you ride that thing faultlessly down the road.


Ever notice that the blokes who build space rockets never actually get in them?
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