LOL....this is just so typical Hahaha.......this event will be a nightmare to get to being as the M25 is shut from 15th to the 18th of March for improvements junction 10 to 11......junction 10 is the turn off you need for Brooklands from the M25.....I'd normally take the clockwise M25 but reckon I'll be looking at travelling the A25 to Guildford then getting onto the A3 from there........who knows what the traffic will be like.....hopefully leave early doors 6am so should be alright

The tube is just plugged into the respective hole in the head without any gasket. As I said, there is only one connection to the inlet valve in my head. The other one is dead. 

Language: Try deepl.com for translation. Helps a lot.

Quote from: Thomas on March 03, 2024, 07:01:22 PMIn the rocker box of my Model 9 from 1937 I have an adjustment option for the inlet valve (some engines also have this for the exhaust valve). Do you have that too?

No don't have just have small bolts on both sides of the roker box try to make some photos tomorrow
Do you have photo how is the smal tube conecting to cylinder head?
Mine was damaged
Thanks

In the rocker box of my Model 9 from 1937 I have an adjustment option for the inlet valve (some engines also have this for the exhaust valve). Do you have that too?

Hi
Just starting engine after full rebuild Model 9 1936 newer hearing it before
Looks like to much oil is pumping to valve guides and leaking over head
Is any adjustment for oil flow?
Thanks for help and sorry for bad English
Greetings from Scotland

A strip of polished steel is glued to my tank. I have never seen this on any other machine. Is this original and/or what could it be for?
Thomas

Hi Russ,

you can estimate it by yourself by considering the angular connection between crank rotation and linear stroke. A full motor revolution of 360 degrees transports the piston from one TDC to the next. I set the zero point of the necessary sinus function at half stroke (49mm, 90° BTDC). That means, the crank rotation has its upper maximum (TDC) at 90°.

55° BTDC are then 35° from zero of the sinus. sin 35° is about 0.57 of the 49mm half stroke, hence at 28mm from zero. That is far away from 49mm – 14.3mm (9/16") = 34.7mm. So, either 9/16" or 55° are wrong. My 1937 Model 9 runs perfectly well with 9/16" BTDC (as given in the user manual). The upper calculation then results in 43° BTDC.

BTW: When for any reason an adjustment on the road is needed you can just take a 9/16 spanner as a measure.

Cheers, Thomas

ok chaps so I'm after ignition timing  for my 1927 model 9 I've seen the chart here and know it's 55 deg's BTDC but does anyone know what that is in inches so I can stick a measuring stick down the plug hole.....I've read in one of the old Sunbeam manuals it gives it as 9/16" BTDC does that sound right?

anyone going? I'll be there be nice to put names to faces....I'm hoping to ride there if I can get the blessed thing to run properly....maybe I'll trailer it there running or not.....I'll stick a few photos up over the weekend

https://www.brooklandsmuseum.com/whats-on/brooklands-sunbeam-100

Thank you Daniel, I knew Georg... I will ask him for a black sweater...