You should have seen it a couple of hours ago

The Merlin axle during strip down & clean

The Riley Merlin axle during clean-up

MGB back axle casing

I wrote earlier about having a wide track back axle for the narrow track chassis, (the Sprite-like, modified chassis). … Well, this last few weeks I`ve been thinking about back axles and what I can use that will fit this chassis and “do the job”.

…. I`m sure I have heard somewhere that early MGB banjo type back axles will fit. The wire wheel variants have a 42mm splined hub that will take the pre war Riley 18″ wire wheels. This axle also has the advantage of having various diff ratio`s available. On the downside, it has hydraulic brakes, where the pre war cars have a mechanical system. Also, I`m not sure how this plays with VSCC eligibility.

I also remembered that I had seen a late Riley 9, (Merlin), back axle amongst the rusty pile in the corner of my lock up garage. There is every chance that it may fit.

I noticed in the latest issue of the MG Owners club mag a banjo type MGB back axle casing, (no diff, hubs, brakes, etc), going cheap. So I bought it just to try it on the chassis to see if it matched up with the rear spring locating points. … AND IT DOES!

I also dug out the rather rusty Merlin axle, AND IT ALSO FITS!! …. SO, do I get the parts to complete the MGB axle and use that. Which will mean converting the car to hydraulic brakes, with all the subsequent work involved in that. … Or do I fit the Riley Merlin axle. Which will mean staying with all pre war parts and a mechanical braking system. (I havn`t got brake drums for this axle, but I`m sure I can locate home). … I probably prefer the pre war merlin axle option, but will ponder a little longer before making up my mind. I will be returning to this subject at a later date. … Whichever option I choose, it will lead to other complications with the torque tube/prop shaft. (Who said “whats a torque tube”?). … Another subject for a future blog!!

Narrow track axle beam ready to fit.

Narrow track axle beam in front of rebuilt wide track axle.

Ben arriving for work on his new moterbike.

Todays job was to fit the rebuilt front axle to the Modified, (Sprite-like), chassis. … Ben was going to work on the passenger side whilst I worked on the drivers side. This would give Ben an understanding of the way the front suspension and steering gear worked and bolted together. … The axle we were to fit was one that I had rebuilt, (here`s one I made earlier!), for a Kestrel chassis I had before I bought the collection of parts from Somerset.
I should have known, (I did know but had forgotten!), that Riley 12/4`s come in two different widths. Wide track and narrow track. There is about 2 inches difference in the distance across the wheels. … The width of the car. (The track). …. I`m sure you`ve guessed by now that the axle we wanted to fit was wide track, and the chassis is narrow track. … It don`t fit!!
After a few moments of panic and swearing, (mostly Ben, I don`t swear), I searched through my other bits and pieces and found a narrow track axle! … Worn out king pins and no hubs, bearings, brake parts, etc, etc.
So now we have a new plan. … Knock the worn out king pins out, take the stub axles off, clean and paint the axle beam and fit it to the chassis. Remove all of the good/new parts from the rebuilt axle and fit them to the narrow track axle, in situ, on the chassis. …… We removed the king pins together. … Getting the cotter pins that hold the king pin in the axle eye was fairly straightforward, but the blowlamp on the axle eye was needed before the king pins could be shifted. … Anyway, they are out now and Ben has cleaned , de-rusted, and painted the axle beam and it is ready to be fitted tomorrow. … I`m tempted to tell the story of working together to drive the king pins out of the axle eye with a lump hammer and metal drift, “when I nod my head, hit it”, but I won`t. … Pictured are the bare, narrow track axle, and the rebuilt wide track axle.