Author Topic: Setting float heights  (Read 1806 times)

Offline Orcade-Ian

  • SOHC Master
  • Posts: 1362
    • View Profile
    • Older Vehicle Web
Setting float heights
« on: May 16, 2021, 05:31:35 PM »
I know this topic has appeared many times but I can’t remember if i’ve posted this before.
Having just completed a couple of banks of carbs - one set 350/4 and the other from my red 400/4 it was now time to set floats.  Anyway, many folk complain that it is difficult to set the the float heights while the tang is JUST touching the spring pin.  This is the rig I’ve been using for a good while, only made from scraps of wood and a couple of old inlet rubbers - you could use two off the bike if you don’t have spares.

[ Guests cannot view attachments ]

The board is used to do all the top end stuff and then the ‘inclined plane’ is used to allow the floats to just touch the pins but no more.  I experimented with the angle and it came out at 103 degrees which means the bowl flanges are at 13 degrees from vertical.

[ Guests cannot view attachments ] [ Guests cannot view attachments ]

Might make it easier for some,
Ian
1953 BSA Golden Flash 650 - still a basket case
1960 Norton Model 50 Featherbed 350
1960 Ducati Elite 200 (nearing completion)
1972 Honda CB 350/4
1975 Honda CB 550/4 F1
1976 Honda CB 400/4 F1
2020 Honda C125 Super Cub
2026 Honda ADV 350