Sneak Peak

Anything related to Vespas... ask tech questions, post helpful info, or just read and learn.
YAMLAM
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Thu Sep 16, 2021 1:50 pm

fantastic work.
win or lose have a booze

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T5-190
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Thu Sep 16, 2021 6:24 pm

A few more .

Image20210804_123217 by mark christie, on Flickr

This one shows the cut and re shut rear end parts just sat in place to get a few dimensions for the frame.

Image20210804_123517 by mark christie, on Flickr

Image20210804_123526 by mark christie, on Flickr

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T5-190
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Sat Sep 18, 2021 4:05 pm

On with the show, framework next. The framework to support the rear end section is made from 20mm steel tube. We use a lot of this at work and is nice to bend and tig weld. I have a cheap plumbers pipe bender that I've welded some flat bar to so that it clamps nice in the vice. Most of the tube to tube welds I cut using a 20mm hole saw. This gives a good close fit for welding.

Image20210918_142350 by mark christie, on Flickr

Image20210822_090536 by mark christie, on Flickr

Image20210822_090545 by mark christie, on Flickr


Its been a while since I did any tig welding to any degree. I've had a tig welder at home for about 10 years and changed it to an AC/DC tig welder a couple of years ago to tackle any aluminium jobs that needed doing. The company I work for has gone through a lot of changes over the years and we are onto our fourth owner. Our workshop is now very small and has no welding bays and the machine shop has gone. So no more home jobs at work.

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T5-190
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Thu Sep 23, 2021 2:46 pm

A few more, the fuel tank is next. Due to the tube framework I was unable to use the standard Vespa PK tank. I mocked up a tank in the space available using card, paper and masking tape. Next was to transfer the patterns to a flat sheet of 3mm aluminium. Ally tig welding the tank was fun to do, I haven't done it for ages so spent a little time with some test pieces.

Image20210822_090545 by mark christie, on Flickr

Image20210903_135216 by mark christie, on Flickr

Image20210903_151124 by mark christie, on Flickr

The filler cap/neck was bought from Amazon and was only £7, the tap is a fast flow BGM.

Image20210903_151020 by mark christie, on Flickr

Tank fitted to the frame with tabs welded on to hold the seat and to secure the tank to the frame.

Image20210908_153349 by mark christie, on Flickr

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T5-190
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Thu Sep 23, 2021 2:56 pm

At this point I thought is was a good idea to fit a fuel sender in case I want to fit a fuel gauge. This will also give access for a 32mm socket to the fuel tap nut. Fuel sender bought also from Amazon about £20, it has a float that rises up a stainless steel shaft that has a coil of wire in it. 0 to 190 ohms, that suits most fuel gauges.

Image20210918_104709 by mark christie, on Flickr

Image20210918_121504 by mark christie, on Flickr

Image20210908_153438 by mark christie, on Flickr

I'll try and get a bit more done at the weekend. I'm off to Singapore for work at the end of the month for 4 to 6 weeks. So progress will be halted for a while.

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T5-190
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Tue Sep 28, 2021 4:00 pm

A little more done, I made some ally plates to mount the battery tray, fuel pump and electrics on. I will be changing the regulator/rectifier for a full wave unit. I think the one supplied is only a half wave unit and I need to run quite a lot of DC items from the battery. The ally plates may get changed to carbon fibre closer to completion.

Image20210912_130811 by mark christie, on Flickr

Image20210912_130803 by mark christie, on Flickr

The leg shields have now been fully removed and all the spot weld holes welded.

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