Tow bar mounted bike racks

I have a Thule tow bar one that can carry three e-bikes, although I've only used it for two. There is nothing special needed to carry an e-bike on any rack like this but you do have to be careful about the weight and usually the rack will say what the max weight to be carried will be. Racks for e-bikes just have a higher allowance.

I assume you mean without a caravan as well?

As well as checking the weight on the tow bar, in order to remain legal, you will need to check the weight on your rear axle and the all up weight of your MH loaded in holiday mode which is best done at a weighbridge.

If weight proves to be an issue, it could be worth considering towing a small trailer.

I'm like Cornersteady and have a towbar mounted Thule carrier for our 2 e-bikes. Fantastic bit of kit but it does weigh a bit and you'll have to find somewhere to store it but it will do the job you are after. It folds down to about the size of a large suitcase, takes up half of our SUV boot space.

Thanks for replying, one if the questions I have is how stable are they (do they bounce when driving?) 

As they are lower then the more common bike carrier do you have any problems with clearance?

I have checked the numbers and done the calculations and weight wise should be okay, I don't travel with any onboard water so that helps a lot.  I'm trying to avoid the trailer option as storing it would be a problem. 

We do notice it on the rear of the car but no more than a caravan and the support bars and straps provided are stable plus lockable. I'm never worried about stability. The Thule sits on top of the towbar and clamps on then locks so clearance isn't a problem.

I would certainly go for the "wheel mounted" option, not a "hang on" rack.

The hang on present challenges with "step through" framed bikes, as many female bikes are, resolvable but with added hassle.

If you push down the the clamping handle (similar to a caravan hitch) properly to the tow ball and tighten the holding clamps onto the bike's crossbar or downtube then there should be no bounce, or at least we have never found any. It's quite rigid. For some reason mine came with a 7 pin connector.

I notice that Thule now do (or perhaps always did) a more compact version see here: https://www.youtube.com/watch?v=LkjTbTn3VCE

If you mean ground clearance, there should be no difference as everything will he mounted above the towbar. However, if your MH has a long rear overhang and the trike protrudes far beyond the rear, you might increase your risk of grounding on a ramp. 

Thanks to everyone who added there comments, I have bitten the bullet and arranged the Tow Bar fitting  and ordered the Bike Rack.

Hope to see you out there.

Ian