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Fly wheel Re-magnetising
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Bola
Swindon
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June 25, 2019 - 5:40 pm
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Hi guys,

Has anyone had a fly wheel Re-magnetising? I am looking to get a better spark. Would this help?

 

Cheers

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sunny
Norfolk
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June 26, 2019 - 7:47 am
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the  magnet  rotor  has  to  be in  a  very  good  contion           eny  stress    or  hamer marks   are  not  good   the  magnets    usly    DONOT    loose  power  the   crankshaft , oilite  bush   and   big gaps  between   rotor  & coil stator   legs   are  a  biger  lose  of  power  ,,its  best  to  upgrade   a  1 switch   system  to  the  later  2  switch  D 7  system   with  a coil &  switch  under  the  seat     this     like   all  good   bantams   has  to  have   a  good crankshaft  &  bush   untill  thats  sorted  good  ingition   is  hard  to  get

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BASIL
Hamstreet,Ashford.
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June 26, 2019 - 8:24 am
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Hi Bola, What model is this flywheel off?? Regards Basil.

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Bola
Swindon
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June 26, 2019 - 9:38 am
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Cheers Guys,

Basil, this is a 1957 D3, images below. I did have another play last night, i found some play in the movement of the points. I added another spacer behind the points, this now looks to make a better contact and give better spark. I'm hopeful but not holding my breath, I've been let down too many times beforefingers-crossed

 

Capture.JPG

IMG_4975.JPG

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sunny
Norfolk
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June 26, 2019 - 9:58 am
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 you  need a  plastic   washer  under  the  points  spring clip    the  gap  from  stator jegs  to magnets is  on  mor  than  10 thow  010 "      , the oilit bush  to  crankshaft   MAX 1.5  thow    001.5    one  thow  is  the  running  gap     ,, the  spark plug  DOSENOT  have  a  resister plug or cap or  that  ht coil  ,, a  no  fasners   are  used  in  fixing  the  ht   lead     and   you  need  a good  gap  between   the  points spring  & condencer

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mike p5xbx
E-Sussex
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June 26, 2019 - 5:02 pm
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I think villiersservices do re-magnetizeing but not sure they can do Bantam ones
the flywheel magnets are not quite what they seem, so you need a purpose made rig to do it properly
like the photo below which is for lambrettas
and some alliterative ideas and info below
** Please log in to view **
and
** Please log in to view **

remag.jpg

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D? - D10- D14 Bantams 350 AJS -500 Triumph http://bsanotru.....lfire.com/

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thornebt
Somerset
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June 26, 2019 - 9:03 pm
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I asked Villiers Services if they could remagnetise Bantam flywheels a couple of months ago and they said they couldn't.  Cheers.  Bruce.

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wildun
Lincolnshire.
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June 26, 2019 - 10:24 pm
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Villiers Services did re-magnetise my D1 flywheel, but it was maybe four years ago. Sorry, but I do not know their position on this at the moment but may be worth an enquiry to them.

1951 Bantam D1 125, 1954 Bantam Enduro, 1970 Bantam B175, all Bantams on the road and ridden regularly, 1995 Yamaha Diversion 900 and 2016 Honda Integra 750 scooter. Horses for courses, all very different to each other, but a bike for every occasion.

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Stoo63
GLASGOW
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June 27, 2019 - 12:46 am
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I'd thought about doing this as well, but couldnt find anyone. The alteranatives are like something out of Frankenstein - ** Please log in to view ** - look down the page , you'll see what i mean. Looks like it would cost about £1000 a minute to run and cause planes to drop from th sky! WAY beyond my skill level. Of course flywhels kick about in boxes and buckets for years on end being cursed and tossed from one pile to another - not best for retaining their magnetic properties.

I was prompted to chip-in because of your ingenious solution to the flimsy coil ht fitting. What a piece of  "$^%£ design that was! I've got about a dozen, all bar one with broken flimsy ht connectors. Between that and the limp magneto, how the hell are we expected to get any kind of spark?!?

Good luck

Stewart

'52 D1 direct lighting plunger, '58 Square Four (project), '59 D1 direct lighting plunger,  '59 Tiger Cub, '60 5TA,  '76 FS1-E

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FrankG
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June 27, 2019 - 11:18 pm
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Villiers should do Wypac mags as they do them for Francis Barnett/James.

Frank

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