Author Topic: 389 Float weight  (Read 1059 times)

Offline duTch

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389 Float weight
« on: 14.04. 2016 12:36 »
 Hiya'all- I've gotten square eyes looking, but does anyone know what the weight should be for a copper 389 Mono float???

 The boat is sitting a bit low in the water *eek*
Started building in about 1977/8 a on average '52 A10 -built from bits 'n pieces never resto intended -maybe 'personalised'
Have a '74 850T Moto Guzzi since '92-best thing I ever bought doesn't need a kickstart 'cos it bump starts sooooooooo(mostly) easy
Australia

Online Triton Thrasher

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Re: 389 Float weight
« Reply #1 on: 14.04. 2016 19:45 »
If the fuel level in the bowl is ok, there is no problem.

Offline muskrat

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Re: 389 Float weight
« Reply #2 on: 14.04. 2016 20:33 »
Wait till it gets light and I'll go down the bottom shed to look. Too many nasties while dark. *eek*
Cheers
'51 A7 plunger, '57 A7SS racer now a A10CR, '78 XT500, '83 CB1100F, 88 HD FXST, 2000 CBR929RR ex Honda Australia Superbike .
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Offline duTch

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Re: 389 Float weight
« Reply #3 on: 14.04. 2016 22:50 »
 Ta mate, but...
 
Quote
Too many nasties while dark. *eek*

   just add light, nasty goes away...? *smile*

 
Quote
If the fuel level in the bowl is ok, there is no problem.

 Nah float is a bubbly sinker, need to reseal it. It may also be sticking on the needle landing. Mine weighed in @ 13-14 grm.

 Made myself yet another clear cover ('dot' shown), used "Clear PVC" this time- 'Trevor- no Trev.here!' at the plastic shop checked for 'fuel' compatibility so I'll see how it goes.

 I have a plastic float, weighs in @ 8grm but it has '376/083 cast on it, so ....for a 376 *dunno2*, any difference??

 Thanks guys

 Whoops, forgot to add the pics, now done

 
Started building in about 1977/8 a on average '52 A10 -built from bits 'n pieces never resto intended -maybe 'personalised'
Have a '74 850T Moto Guzzi since '92-best thing I ever bought doesn't need a kickstart 'cos it bump starts sooooooooo(mostly) easy
Australia

Online Triton Thrasher

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Re: 389 Float weight
« Reply #4 on: 15.04. 2016 06:36 »
You can fix holes in a brass float, with solder.

It will be worth keeping as a spare, then.

Offline duTch

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Re: 389 Float weight
« Reply #5 on: 15.04. 2016 09:10 »

 Yep, I did it before but I think some bits of solder leaked through, I can hear it rattling. There's a couple of pinhole bubbles, but have a better solder iron now, so'll get onto it in the morning if I don't get suckered into working. Just be handy to know what the weight should be, I had a notion that ideally the weight should be 10grms *dunno*
Started building in about 1977/8 a on average '52 A10 -built from bits 'n pieces never resto intended -maybe 'personalised'
Have a '74 850T Moto Guzzi since '92-best thing I ever bought doesn't need a kickstart 'cos it bump starts sooooooooo(mostly) easy
Australia

Offline muskrat

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Re: 389 Float weight
« Reply #6 on: 15.04. 2016 10:18 »
Sorry duTch I got stuck into the house work (the wife's away). Just ran the gauntlet through the dark (even worse in the evening, the nasties are hungry) to have a look. Bugga it's a 376 plastic one weighing 8.2gr, same as the one in your pic.
Cheers
'51 A7 plunger, '57 A7SS racer now a A10CR, '78 XT500, '83 CB1100F, 88 HD FXST, 2000 CBR929RR ex Honda Australia Superbike .
Australia
Muskys Plunger A7

Offline duTch

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Re: 389 Float weight
« Reply #7 on: 15.04. 2016 17:44 »

 Thanks Bud, no wuzzas, I'll update on what damage I can inflict/have inflicted in the morning... *work*
Started building in about 1977/8 a on average '52 A10 -built from bits 'n pieces never resto intended -maybe 'personalised'
Have a '74 850T Moto Guzzi since '92-best thing I ever bought doesn't need a kickstart 'cos it bump starts sooooooooo(mostly) easy
Australia

Offline duTch

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Re: 389 Float weight
« Reply #8 on: 17.04. 2016 15:40 »

 Quick update; I did have an earlyish call to get suckered into work, but after three hours sleep, somehow babbled my way outta that  *eek*

 Pulled the float out again and split it- was a firey affair- half full of fuel... ended up with 8-10 grms overall ( scales are a bit dodgy).
 Resealed the float, still 8-10 grm overall(mainly 8g), and sits nice, but level a bit low unless I leave it and it rises to previous level.(checked for bubbles in a tub of warm water)

 Decided the needle was worn, so being Sunday I cheated a bit, and stuck it in the drill and touched up the tip with a points file & emery. I guess next choice is touch up the seat, or just don't leave the fuel turned on.
 I thought doing this would make the needle sit further up, so made a 10thou standby packer to solder onto the float/needle interface but haven't needed it yet.

Started building in about 1977/8 a on average '52 A10 -built from bits 'n pieces never resto intended -maybe 'personalised'
Have a '74 850T Moto Guzzi since '92-best thing I ever bought doesn't need a kickstart 'cos it bump starts sooooooooo(mostly) easy
Australia