Featured 1950 5t Rebuild

When i rode the bike to see just what might req doing i was unhappy with the long gate between each of the gears, after stripping the box looks like the worn cam plate is the problem.

 

Genuine made in Meriden but made from a shit type of alloy, forget the name for it now

 

That sounds like it Adie i'm now at the forgot more than i learnt stage in life

 

Jobs getting done, crank end feed seal done by Pat at Seager Engineering

 

Cylinder head decoked, seats cut and valves lapped in and rebuilt, a coat of high temp back and rocker boxes cleaned with 3M wheel ready for polishing.

 

Yes early bikes has a bush and one of the previous owners had attempted a seal conversion at some point leaving the bush in place and removing just enough metal to fit a seal held in with sealer and two wire hoops, bit of a mess so had Pat remove it all and rebuild with weld and do the job properly

 

The primary case took some grinding to remove the corrosion from battery acid spillage in its past, a bit more smoothing out with finer grade of wet n dry and will be ready for polishing, managed to finish off the gearbox and timing cover though.

 

Welding day today, had my mate Steve TIG weld the crankcase and gearbox case that had cracked and then fit a side stand lug as it was an optional extra back in 1950.

 

Bearing inner recess has to machined and an insert fitted as old bearing had spun in the case and made it oversize :-(

 

Update on the worn cam plate, its a casting made from ZAMAK (or Zamac, formerly trademarked as MAZAK) is a family of alloys with a base metal of zinc and alloying elements of aluminium, magnesium, and copper.

 

Barrels back from a +40 re bore and first coat of paint, should have the other parts in a few days

 

Primary side crank case weld cleaned up on the inside and new outer bearing along with and insert to take up the slack as old bearing had spun in the case.

 

Luckily i have a few good contacts