MG
The Classic Marque

Ahh---amp. meter---so from what I understand that dark piece down under the (broken) needle with the rounded triangle ends is in fact a swiveling permanent magnet--pos. one end neg. the other. Depending on whether the current flow in the gauge's coil is pos or neg(charge or discharge), the appropriate end will be drawn in towards the gauge's coil-moving the needle to show charge or discharge---F...

So Willy o' the south, I had already done that on a previous occasion! This is what they look like inside (I have no idea why it comes out sideways, as it's the right way up on my computer). This one has only the stub of the needle (you can guess who broke it) - but it works as it should, so the innards are fine. I gather it sends the electrons across via the thick wire with the 2 turns in it; and...

Just remembered my exhaust thread in technical from last year.

I repaired and modified my two piece as a spare. But decided I preferred the single.

Thread: Exhaust pipe. One piece or two?

Last Post 13 June 2025 at 08:54:11

https://mg-cars.org.uk/cgi-bin/or17?runprog=mgbbs&access=11136766502073&mode=archiveth&subject=97&subjectar=97&thread=202506050952462915398

A...

Bud Congratulations!!!

I have been reading your posts for many years now and find them very interesting, informative and illuminating.

Myself I am 75 and hope to be able to have your energy and wisdom some day also. My MG is but 2 years younger.

Thank you for sharing your experience via the posts.

Don’t think there would be room for two large rc40 boxes !
Original was one large, one small !
As it is for a mini it will require a lot of work to get to fit.

Hence the midget across the back two box system which will fit !

Why make work and probably stress trying to get it to fit ?

I like my single h/d across the back solution and will replace eventually when it fina...

Malc,

I believe the 2 boxes in the RC40 system, 1st small 2nd large, are designed to work together to deal with the A series exhaust characteristics. I can't find my scan of the exhaust at the moment so I'll dig out the photo tomorrow and scan it again and post it.

David,

Thanks, I am beginining to wonder about a two box RC40 system, using two of the larger boxes, if I can suppress the racket I would consider an LCB.

Your thoughts ?

I fitted a 2 box RC40 system to my Sprite with a LCB and was happy with it, I had previously used a single box from a Mini 1275 GT IIRC and found it a bit loud and tiresome on long journeys. The RC40 was a good improvement with a nice note and not loud. The small box fitted along side the tank and the larger box behind it across the rear, some making of pipe bends was required.

I fitted a TRW 3/4” dual master cylinder today, seems ok so far, although not been on a run yet.
The reason I changed the master cylinder is that on a run last Sunday I lost clutch operation, pedal seemed to loose pressure. If I pumped the clutch pedal very slowly then could get a few gear changes. The original cylinder was a Lockheed although I did change the seals quite a few years ago ( m...

I'm warming to the idea of two RC40's !!

One under the axle and one behind the petrol tank, chances are the biggest loss is the 90 degree at the front