Click here to return to the home page.
Classic Morgans
Who's Online
5 registered (jrt, BobtheTrain, Ricardo, Button, Rudolf), 126 Guests and 12 Spiders online.
Key: Admin, Global Mod, Mod
Latest Photos
Driving the Blue Ridge just south of Roanoke
Searching for somewhere scenic...
Custom made storage box for luggage rack
Southern Weather comes North
Island of Muhu in the rain
Newest Topics
Amilcar Hispano 12Litre V8
by +8Rich
20/06/19 10:39 PM
Coating overidders black?
by dmh
20/06/19 08:02 PM
David Gilmour Guitar Auction
by MJF
20/06/19 07:37 PM
Donkervoort D8 GTO-RS
by Gambalunga
20/06/19 05:59 PM
squeaking on bulkhead area
by PhilRoyle
20/06/19 04:19 PM
Plus 4GDI first MOT
by DaveW
20/06/19 12:33 PM
Tribute to the DC3
by Graham, G4FUJ
20/06/19 10:32 AM
Newest Members
PaulyG, René, Bodensee-Mog, Pip, jakexj9000
6556 Registered Users
Shout Box

Forum Stats
6,556 Registered Members
33 Forums
35,410 Topics
571,416 Posts

Most users ever online: 341 @ 11/02/18 10:30 PM
Today's Birthdays
JMc, Julian BB, kevinh, topdown
Page 3 of 4 < 1 2 3 4 >
Topic Options
#551754 - 04/01/19 06:34 PM Re: I.R.S. [Re: IvorMog]
BobtheTrain Online   content

Charter Member

Registered: 15/04/14
Posts: 5226
Loc: Renfrewshire
Originally Posted By IvorMog
The term "live axle" refers to an axle where the hubs are connected by a solid beam with no relative articulation between them.

Several forums and I stand corrected.


Edited by BobtheTrain (04/01/19 06:35 PM)
_________________________
Best Regards
Lang may yer lum reek

Top
#551764 - 04/01/19 07:24 PM Re: I.R.S. [Re: howard]
Hamwich Offline

Talk Morgan Guru

Registered: 28/04/08
Posts: 7551
Loc: Gloucestershire, UK
I always thought a beam axle was one that spanned the car in a single unarticulated unit linking both wheels, and could be live or dead. Live meaning drive is transmitted, dead meaning no drive, like a De Dion tube axle.

Any other sort of axle, where only a single wheel is connected, is a split axle, and again these can be live or dead.
_________________________
Tim H.
1986 4/4 VVTi Sport, 2002 LR Defender, 1957 R4 CV, 2005 Ferrari Vipar

Top
#551774 - 04/01/19 08:33 PM Re: I.R.S. [Re: Hamwich]
IvorMog Offline

Talk Morgan Regular

Registered: 17/04/17
Posts: 792
Loc: Staffordshire
Originally Posted By Hamwich
I always thought a beam axle was one that spanned the car in a single unarticulated unit linking both wheels, and could be live or dead. Live meaning drive is transmitted, dead meaning no drive, like a De Dion tube axle.

Any other sort of axle, where only a single wheel is connected, is a split axle, and again these can be live or dead.




Research needed to confirm either way but the outcome will be interesting.

Could be 40 odd years of preconceived ideas going up in smoke here.
_________________________
Bob

1999 4/4 1.8 Zetec

Top
#551781 - 04/01/19 09:44 PM Re: I.R.S. [Re: howard]
howard Offline
Part of the Furniture

Registered: 01/01/09
Posts: 4305
"Dead" vs "live". I'm firmly of the view that engineering is more important than sematics! innocent

But from a quick glance at my collection of Morgan build photos, it looks to me as if the trad could be modded to carry IRS. Be a biggish job for a one off and likely would result in something as expensive as an Aero so probably not worth it.

As an interesting aside, I cant see why MMC havent altered the chassis to get rid of the underslung and allow more axle movement. That doesnt look too difficult.

Top
#551795 - 04/01/19 10:39 PM Re: I.R.S. [Re: howard]
Robbie Online   content

Talk Morgan Expert

Registered: 08/01/07
Posts: 2656
Loc: Co Wexford, Ireland
By the looks of the photos in Miscellany they are designing a new chassis so the short travel may well not last much longer
_________________________
Robbie
2018 Plus4 - The Black Pearl
181-WX-3082

"Fettlebodge"-- chief of the PaddyMogs

Top
#551799 - 04/01/19 10:54 PM Re: I.R.S. [Re: Hamwich]
BobtheTrain Online   content

Charter Member

Registered: 15/04/14
Posts: 5226
Loc: Renfrewshire
Originally Posted By Hamwich
I always thought a beam axle was one that spanned the car in a single unarticulated unit linking both wheels, and could be live or dead. Live meaning drive is transmitted, dead meaning no drive, like a De Dion tube axle.

Any other sort of axle, where only a single wheel is connected, is a split axle, and again these can be live or dead.

That's what I thought.
_________________________
Best Regards
Lang may yer lum reek

Top
#551800 - 04/01/19 10:54 PM Re: I.R.S. [Re: howard]
cerealsurfer Offline
Talk Morgan Expert

Registered: 09/10/06
Posts: 2358
There was a +8 racer with IRS front and rear based on a completely revised chassis and a fibreglass body. I believe it was developed by David Rutherford and came up for sale about a year ago on racecarsdirect.



It was hard to move on and is a bit of a curio having had Modsports spec effectively written out of the Morgan racing rulebook.

The chassis issues with rear IRS were addressed - this is where the Aero chassis started life. From memory, when Charles Morgan was racing the last of the Trad +8’s (Blue with Yellow Wheels) and despite a considerable amount of modification it was just not cutting the mustard.



Next development was the revised and stiffer Aero chassis as was originally raced in a trad body form as Big Blue (as was fitted with a large Ceverolet LS motor).



The early diff/hub/wishbone mounting design in a separate cradle was to facilitate quick rear end swaps during endurance racing. Only 4 bolts holding the entire rear assembly in place.

Top
#551809 - 05/01/19 12:24 AM Re: I.R.S. [Re: cerealsurfer]
+8Rich Offline

Member of the Inner Circle

Registered: 15/12/09
Posts: 20051
Loc: Devonshire
Thanks for that fascinating bit of race history on the Plus 8 IRS.
_________________________
Regards Richard

1999 Indigo Blue +8
2009 4/4 Sport Green
1994 Connaught Green +8






Top
#551830 - 05/01/19 08:58 AM Re: I.R.S. [Re: howard]
Culminator Offline
Learner Plates Off!

Registered: 26/08/10
Posts: 455
Aha! I knew I'd seen a David Rutherford engineered IRS plus 8 somewhere....

Top
#551833 - 05/01/19 09:14 AM Re: I.R.S. [Re: howard]
Richard Wood Online   NoMood
Talk Morgan Enthusiast

Registered: 03/02/16
Posts: 1710
Loc: East Harling, Norfolk UK
FWIW I agree with Bob's (IvorMog) description. The term live relating to the fact a solid axle links both suspended wheels rather than them moving independantly. Nothing therefore to do with them being driven or not.

Wicki is a bit vague on this but does state the drive axle may be a live axle, suggesting it doesn't have to be driven.


Edited by Richard Wood (05/01/19 09:15 AM)
_________________________
Richard

2018 Roadster - Red/Magnolia - "Morton"
1967 Land Rover series 2a SWB
1960 Velocette Venom

Top
Page 3 of 4 < 1 2 3 4 >

Moderator:  Aeroman, Boshly, Simon