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Aug 24th, 2023
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Joined: Oct 2012
Posts: 2,776 Likes: 59
Talk Morgan Expert
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Talk Morgan Expert
Joined: Oct 2012
Posts: 2,776 Likes: 59 |
Due to work intruding on real life it has taken me longer to get everything done than I had hoped but that is the wee car all back together, been out for a test run and it's all just working. For a car that had no apparent symptoms of the Centa packing up it's amazing just how positive and slop free the drive train suddenly is. Probably just like it was when the factory fitted it three and a half years ago. Easy to just live with things that must have been slowly deteriorating. 
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Joined: Apr 2013
Posts: 1,363 Likes: 11
Has a lot to Say!
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Has a lot to Say!
Joined: Apr 2013
Posts: 1,363 Likes: 11 |
I was wrong. My Centa unit may be perfectly fine. When I rolled the car off my trailer my dealer was immediately on it. He pointed out that I had four cracks in the chassis on the front end. All new. The engine was trying to leave the building. This car was a 2012 model #405 with the added front chassis brace.
What's your mileage? Who cares. Is it practical? See #1. What happens when it rains? You get wet.
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Joined: Oct 2012
Posts: 2,776 Likes: 59
Talk Morgan Expert
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Talk Morgan Expert
Joined: Oct 2012
Posts: 2,776 Likes: 59 |
I was wrong. My Centa unit may be perfectly fine. When I rolled the car off my trailer my dealer was immediately on it. He pointed out that I had four cracks in the chassis on the front end. All new. The engine was trying to leave the building. This car was a 2012 model #405 with the added front chassis brace. Ouch. Hopefully the road to getting it all back together isn't too long and bumpy. On the bright side, while it is all stripped down it's really easy to check the clutch and Centa. Not much consolation. best of luck with it all.
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Joined: Jan 2014
Posts: 1,075
Has a lot to Say!
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Has a lot to Say!
Joined: Jan 2014
Posts: 1,075 |
[quote=Dan_Lockwood][quote=Hamwich][quote=RedThree]
Good thought! This looks a lot like the rotoflex coupler, used on the rear axle half-shafts of the Triumph GT6 and Lotus Elan. They have their problems, mostly with age, and can be dramatic if they fail at speed in that application. I think they were used as a "cheap" way to accommodate universal joint action along with lateral axle movement due to suspension geometry challenges. The torsional "wind-up" affect of them was always a problem with the minor but noticable induced driveline snatch. The original Harley type compensator coupling also had a rear driveshaft rubber coupling used on Mercs and BMW's, probably others too. They are used for some harmonic dampening and also for very slight angle misalignment. The difference between the Lovejoy and the driveshaft rubber couplings is that the Lovejoy can windup and the driveshaft couplings are pretty much non-windup types. They are rubber, but most have some type of Kevlar or fiberglass disc cast into them to keep them direct drive without windup. But this disc will still allow for slight vibrations to be absorbed and flex off angle just a bit. I like the Lovejoy for this application and it's possible with the adapting shafts and plates, it could be a bolt in replacement. Just food for thought guys.
Dan
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Joined: Nov 2007
Posts: 782
Talk Morgan Regular
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Talk Morgan Regular
Joined: Nov 2007
Posts: 782 |
Looks more than possible that the added chassis brace to early models does much more harm than good.
I do hope the design engineers at Morgan passed at least some of their GCSEs this year...
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Joined: Jul 2013
Posts: 3,658 Likes: 48
Talk Morgan Addict
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Talk Morgan Addict
Joined: Jul 2013
Posts: 3,658 Likes: 48 |
It looks as if I'm joining the failed Centra club  The Centra replaced the original compensator and has lasted only about 2 and a half years and just under 14,000 miles. I've had no lumps of rubber but do get a strong burning rubber smell on acceleration and high revs. Using a iPhone boroscope (thanks for the tip Big Steve) at least one rubber looks to have pretty much disintegrated so it's off to the dealer.
Red Leader
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Joined: Jun 2012
Posts: 2,139 Likes: 43
Talk Morgan Expert
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Talk Morgan Expert
Joined: Jun 2012
Posts: 2,139 Likes: 43 |
Bad news Chris. It seems like over 10,000 miles and you are in the window for Centa compensator rubber roller failure. To replace the rollers is not expensive (£26) it's just all the work involved to do it. At least it's not the middle of the Summer..... or France on the way to Grindelwald.
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Joined: Oct 2012
Posts: 6,538
Talk Morgan Sage
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Talk Morgan Sage
Joined: Oct 2012
Posts: 6,538 |
Aghhhh...sorry to read this Chris and all the best with the fix.
Hope you get some £££ contribution?
Do keep us posted .
Neil
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Joined: May 2015
Posts: 1,773 Likes: 19
Talk Morgan Enthusiast
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Talk Morgan Enthusiast
Joined: May 2015
Posts: 1,773 Likes: 19 |
...
I've had no lumps of rubber but do get a strong burning rubber smell on acceleration and high revs.
Using a iPhone boroscope (thanks for the tip Big Steve) at least one rubber looks to have pretty much disintegrated so it's off to the dealer.
Funny I was just looking for an excuse to get one of those inspection scopes. I get the rubber smell too but assuming was the rear tyre... !
M3W5sp 2015, MSCC, MTWC, Oxon UK
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Joined: Jan 2013
Posts: 655 Likes: 1
WW11 MOG Talk Morgan Regular
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OP
WW11 MOG Talk Morgan Regular
Joined: Jan 2013
Posts: 655 Likes: 1 |
We really need to see where MMC have taken this issue.
I discussed my failed rubbers experience with Greg Dixon-Smith at Prescott in May. Said he would raise it withMMC managers. No news since........
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