Talk Morgan Forums Morgan Sports Cars Morgan Three Wheeler & Super 3 Centra Compensator falling apart.....

As Rob says, donut from a BMW M4.

Apparently £1,600 fitted but check with Krazy Horse

Nice... wonder how many have they done and any issues?

I notice the motor is removed with the (former) Centa housing still installed. Do I see holes in that housing to allow removal of the motor via the just the four hosing bolts?

A few years ago I did some research, but without any M3W to play with, AND Centa coming out with their comp through MMC, I didn't pursue this any further.

LoveJoy Flex Coupling LF-16

The LoveJoy coupling in the above link is good for 413#/' of torque at max and will be capable of 6000 rpms. It also has a nominal wind up of 5º and a max of 14º at max torque.

The slick thing about this is that it will probably come very close to just bolting up to the original rear flange that came in the original Harley comp from MMC. They would bolt in with the three axial bolts and then on the crankshaft end, all you need is a stub that slides inside the coupling and has three radial bolts to affix it. That way the unit could be installed just as you see in the KH picture. Then just slide in the motor, attach the four bolts through preciously made holes at each bolt head and then through just one other hole, slide in each of the three bolts with blue Loctite and you're ready to roll.

I checked on pricing here in the US and this coupling through our work was just $200.00. The rear adapter plate could just be re-drilled with the correct bolt pattern and a new from flywheel hub with a round shaft extending rearward and that's the entire kit. Oh, it's High Temp Rubber to boot, (-40 to 194 ºF). So with all the new holes in the adapter, ventilation shouldn't be an issue.

This sounds like something Phil could sink his teeth into.

Just throw I'd throw out what I had found a few years ago and how it "may" be very similar to what KH has now. I think this LoveJoy design may be a bit easier to install as the crankshaft bolts are radial, not axial, making he inserting and tightening of the bolts a lot easier.

Per Andrew English: "S&S says it produces torque spikes of 1,800lb ft"

I find 1800#/' torque spikes a bit high. And under full load on a dyno, I highly doubt they ever get close to the 413 that the LF-16 can handle.

But that aside, the coupling that's shown in the KH picture looks very similar to the standard BMW or Mercedes driveshaft flex coupler between the driveshaft and the differential. If so, this is probably close to the one originally used on the Harley MMC comp. I have one of these and it does flex/bend ever so slightly, but there is no flex in it radially at all. There's actually a hard disc laminated around all the attachment bolt holes so it transfers torque directly, but able to flex angularly just a bit.

Can't see how this would be much better than just a solid coupling for torque pulses etc.

This is my car in the photo. I have a load of pictures but can't load them on here for some reason. I can email them if anybody is really interested in this mod.

Rob, what is the expectation for this mod and what difference does it make?

I presume this mod is only for the Centa coupling equipped cars, but what if like me you are on the original Harley type compensator.

Which to be fair is running like a dream so far with 16k miles and plenty of JCB high pressure grease.

the compensator on my wife's heritage softail has the advantage of being bathed in the oil for the primary chain and clutch