Vespa 125 Banana.

Two wheels good.

Re: Vespa 125 Banana.

Post by Il Duce @ Mon Feb 10, 2020 2:59 pm

Careless Whisperer wrote:If you had a welder, you could just smack a nut on there with a hammer and weld it in place. Sorted!


And the mystery of the demise of British Leyland is finally uncovered.
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Re: Vespa 125 Banana.

Post by Aesgarth @ Mon Feb 10, 2020 3:06 pm

It only looks a little bit fcuked. I'm slightly surprised the nut won't tighten. If I had a bigger lathe I'd offer to have a go at fixing it for you. There's no way it would fit in mine though.
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Re: Vespa 125 Banana.

Post by Il Duce @ Tue Feb 11, 2020 9:28 am

Aesgarth wrote:It only looks a little bit fcuked. I'm slightly surprised the nut won't tighten. If I had a bigger lathe I'd offer to have a go at fixing it for you. There's no way it would fit in mine though.


I think the problem is that the middle thread of the 5 or six is borked. It'll hold on the first (pointless- it'd be too loose) and last thread (impossible to tighten it this far) but when I fit the clutch and washer it means the nut hits exactly where the knackered thread is and so just turns.

No worries. A new one is in the post.
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Re: Vespa 125 Banana.

Post by manfromdelmonte @ Tue Feb 11, 2020 5:24 pm

How did you knacker it, or was it already knackered?
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Re: Vespa 125 Banana.

Post by Il Duce @ Wed Feb 12, 2020 9:16 am

manfromdelmonte wrote:How did you knacker it, or was it already knackered?


It was brand new so it's one of 2 things:

1. Some of the loctite used to secure the woodruf key in the shaft got onto the thread somehow then when I tried to tighten it the nut, the bastard stuff just destroyed the thread.
2. Too much furious wanking has given me superhuman strength in my right arm and I unwittingly destroyed the thread even though I was using a torque wrench.
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Re: Vespa 125 Banana.

Post by manfromdelmonte @ Wed Feb 12, 2020 10:47 am

Weird. I wonder if it could have been a manufacturing defect, either poorly cut threads (in the part, or the nut) or something wrong with the steel.

Probably worth thoroughly inspecting the new parts before getting too far, maybe run a tap/die over them first.
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Re: Vespa 125 Banana.

Post by Il Duce @ Wed Feb 12, 2020 11:24 am

manfromdelmonte wrote:Weird. I wonder if it could have been a manufacturing defect, either poorly cut threads (in the part, or the nut) or something wrong with the steel.

Probably worth thoroughly inspecting the new parts before getting too far, maybe run a tap/die over them first.


Don't think so. I fitted and removed the nut a few times. It's possible I might have over-tightened it and damaged it during this. I was also having problems with the nut size so maybe I damaged it by trying the wrong nut before I found the right one. Or maybe a combination of all 3.

I've ordered a different make this time and it's coming with it's own nut and washer so it should be ok.
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Re: Vespa 125 Banana.

Post by Il Duce @ Fri Feb 21, 2020 9:02 am

Well the replacement parts arrived and I had a fairly productive afternoon.

Got the new gear cluster in and the cases back together and the clutch fitted.


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Then went to fit the head and cylinder
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And found that they hadn't sent the 4 nuts and 4 bolts with the kit
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I dug around and found a sort of set of 4
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I used the thickest gasket first and it came out at 2.2 squish
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Then I used the thinnest and it came out at 1.24- 1.3. After this, sods law I found the instructions online on the VMC site (another thing not sent with the kit- thanks Officina Tonazzo!) and they say that squish should be 1.4 so I'll wait to fit all 8 nuts/bolts and then try again.
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Then I was still fresh so I thought I'd fit the Malossi front pads.
Look good don't they?
Well that's great but the fvcking wheel won't go fully back on.
I tried buffing off some of the paint on the back of the pads but it was no use so the standard ones went back on.
More parts for the "spares" box.

Image
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Re: Vespa 125 Banana.

Post by span @ Fri Feb 21, 2020 10:12 am

S1K wrote:You could use one of those pin shape things you used to get in the Innovations Catalogue

The Innovations Catalogue!! I remember many happy pre-home-internet hours spent pouring over that!

I think that's where my mum got her 'dazer' which emitted a high-pitched tone which should instantly disable an attacking dog. If a dog barked at us through a gate, she'd daze them. The dazer didn't seem to work at all, it just gave me a fear of barking-but-otherwise-harmless dogs which I still have.
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Re: Vespa 125 Banana.

Post by manfromdelmonte @ Fri Feb 21, 2020 3:51 pm

Between that and the Argos catalogue you could keep a young me happy for hours.
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Re: Vespa 125 Banana.

Post by Careless Whisperer @ Fri Feb 21, 2020 7:40 pm

manfromdelmonte wrote:Between that and the Argos catalogue you could keep a young me happy for hours.

And the Marshall Ward/Empire etc catalogues for a few more minutes too! :hehe:
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Re: Vespa 125 Banana.

Post by Pigeon @ Sat Feb 22, 2020 12:05 am

Bah, the Bull Electrical catalogue was where it was at. Anything from wire and insulating tape and stuff all the way to a Red Top heat seeking missile (a real one).
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Re: Vespa 125 Banana.

Post by Il Duce @ Sat Feb 22, 2020 9:37 am

WTF!

Don't turn my thread into something resembling a care-home lunchtime chat.

"ooh remember when policemen only had a whistle and a truncheon"
"and butter was properly yellow"
"anybody seen my teeth?"
"nurse! pigeon has pissed himself again"
"matron! Span is touching my jelly!"
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Re: Vespa 125 Banana.

Post by Pigeon @ Sat Feb 22, 2020 9:56 am

Benito ha fatto una cacca!
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Re: Vespa 125 Banana.

Post by Dirk @ Sat Feb 22, 2020 11:24 am

Il Duce wrote:WTF!

Don't turn my thread into something resembling a care-home lunchtime chat.


It already did resemble that.
"Yes, we let him potter around in the shed. He never finished anything much, though he thinks he does, but it keeps him happy."

Now if you had a welder on the other hand, that would be different.
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Re: Vespa 125 Banana.

Post by Il Duce @ Sat Feb 22, 2020 5:01 pm

Dirk wrote: He never finished anything much


I'll finish your teeth in a minute fatty!

Look! Look what I did!!! Looooook you bastard!!!!


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Re: Vespa 125 Banana.

Post by Dirk @ Sun Feb 23, 2020 10:50 am

But it's just assembling bits that are supposed to go together. Like a kids Lego set. And even then they make something different afterwards.

Whereas as I say, if you were using a welder...
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Re: Vespa 125 Banana.

Post by Il Duce @ Fri Feb 28, 2020 9:32 am

Ok. Some progress. Squish checked again and it's bang on. Clips fitted to piston. Rings gapped- 0.3 spot on- and fitted. Head fitted and torqued down.

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Inlet studs fitted.


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Inlet fitted

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Clutch cover fitted and checked and nothing touches when I turn over the engine.

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Rear Malossi pads fitted

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And finally rear hub mounted



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Now if only they'd sent the bloody studs for the exhaust I could have fitted the first part of the exhaust and done a leak test.
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Re: Vespa 125 Banana.

Post by tanglerat @ Fri Feb 28, 2020 12:13 pm

And if you owned a welder you could've welded it and done your test.

You're really only working against yourself here, without a welder.
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Re: Vespa 125 Banana.

Post by Il Duce @ Fri Feb 28, 2020 3:51 pm

tanglerat wrote:And if you owned a welder you could've welded it and done your test.

You're really only working against yourself here, without a welder.



Weld the exhaust to the fecking cylinder?
What sort of fvcking baboon are you?

I bet you nail up your wallpaper.
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Re: Vespa 125 Banana.

Post by S1K @ Fri Feb 28, 2020 4:09 pm

Any competent engine builder would be making so much gas pressure that he’d have to weld the exhaust to the cylinder just to stop it flying off and killing passers by.
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Re: Vespa 125 Banana.

Post by Il Duce @ Fri Feb 28, 2020 4:55 pm

S1K wrote:Any competent engine builder would be making so much gas pressure that he’d have to weld the exhaust to the cylinder just to stop it flying off and killing passers by.


Moron! The simple solution in that case would be to remove the potato from the one end.

Get back to sticking playing cards in your spokes ok?
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Re: Vespa 125 Banana.

Post by NNK @ Fri Feb 28, 2020 9:24 pm

Well I'm very impressed with all of your work so far.
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Re: Vespa 125 Banana.

Post by Aesgarth @ Fri Feb 28, 2020 9:55 pm

Good work.
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Re: Vespa 125 Banana.

Post by Il Duce @ Sat Feb 29, 2020 9:21 am

There! Look! Professional engineers! Who know about engines, giving me praise!

Dirk, your opinion as a gay sailorboy "oohh I love the wind on my cheeks" counts for zero now! Ha!
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Re: Vespa 125 Banana.

Post by Il Duce @ Fri Mar 06, 2020 9:48 am

Exhaust stubs fitted
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Exhaust manifold fitted and connected to inlet manifold with the leak tester. It's a blood pressure kit and a bike inner tube. Each end is connected then it's pumped up and hopefully the pressure holds meaning there are no air/fluid leaks on the engine.
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Unfortunately it was leaking like Dirk's catheter from the head. This was due to a combination of having to use a very thin gasket to get the correct squish, and my shit dremel work on the one quarter of the casing that I had to cut away.
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Anyway a bit of high temp copper gasket and the result is good and steady. Found another tiny leak on the inlet but once I'd nipped up the nuts all was good.
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Did a trial loose fit on the exhaust which revealed that it can't be fitted when the engine is in the engine stand.
If only I had something that could weld metal together to make a different shaped stand. No matter, I have lots of wood. I'll make one out of that.
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Re: Vespa 125 Banana.

Post by NNK @ Sat Mar 07, 2020 4:35 am

A mechanic and carpenter, is there no end to your talents ?
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Re: Vespa 125 Banana.

Post by Il Duce @ Sat Mar 07, 2020 9:28 am

NNK wrote:A mechanic and carpenter, is there no end to your talents ?


I don't think there's any beginning to them.

That said I have made a wooden stand for the engine which allows me to lower the body onto it when I'm refitting it instead of having to hold the whole engine and try and slide the main 18 inch bolt in. I think I might modify that to hold the racengine I shall post a picture next week if it doesn't look like something that Dirk built while pissed.
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Re: Vespa 125 Banana.

Post by Il Duce @ Mon Mar 09, 2020 9:47 am

Fitted the flywheel and the exhaust and the carb and then I looked into the big box of parts only to find I used them all.
I think it's finished. I still need to connect the wires to the regulator and oil and fuel it but then it's done.

I can't be arsed to build an engine stand so I'm going to stick it in the frame to start it. Means taking it out if somethings wrong but it's still less work than building an engine stand.


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Re: Vespa 125 Banana.

Post by S1K @ Mon Mar 09, 2020 10:21 am

I know nothing about Vespa engines but it certainly looks quick with the blue head and the expansion tank exhaust.
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