1948 HRD Vincent -Ashtray to Driveway

[brt651]

        Hello and thank you for looking,
     If your like me and like to look at something different I hope to get your interest as I take this engine/bike from Ashtray ( its primary use in the 70's ) to the driveway.
  I'll be a little slow as I have other projects to do as well , and by no means am I an expert on HRD/ Vincent for that matter. But I have been given the opportunity to do this bike for a mate.
  So here it goes
     cheers
         brt651
P.S The true driving force is to knock Swannie off his perch with his BSA Goldstar project. Ha Ha only joking. But that bike is a wonderful credit to him.
 
  Here is the engine as it arrived

[brt651]

   Right side crankcase after blasting.
Has the counter bores machined to accept 600 cc Top End kits. The 2 start oil pump is installed as are all new cam and breather spindles in the timing chest. also gearbox bearings fitted.

[brt651]

  The timing side of the right crankcase.

[brt651]

  This is a poor picture sorry of a Terry Prince crankshaft.
It has a 40mm Big end pin and 30mm mainshafts. The Crankcases have been machined for larger main bearings. The main bearing bores are a bit of a weakness when using the standard 1'' mainshafts.
The "o" ring on the main bearing is to facilitate assembly. I cut it off after the bearing started in its bore.

[brt651]

  This picture is a dummy run of the crank in the cases
The conrods are made by Argo Engineering In Maitland NSW Australia.

[brt651]

 It fits so far

[brt651]

   Gooing up ready for final case assembly.

[brt651]

   Cases assembled now with stainless studs I had made locally. Actually my mates brother is a machinist.

[brt651]

   This picture is of the shift plate with its bevel installed.The STD geabox is a 4 speed. This gearbox is a Surtess 5 speed box made by Quaife.
After installing the bevel it has to be ground on the underside. the half pinion is its shifting mate. The small springs and chamfered screws are fitted to aid engine assembly.These hold the half pinion in 1st gears position when assembling the box. These parts are new and on further discussion I decided to leave them out as they have a tendency to break in service. Instead of relying on the spring you install the G40 shift shaft and hold the pinion in first gear.

[brt651]

    This is the 5 speed being installed. A fiddly process. I did a couple of dummy runs before the final procedure.