Talk Morgan Forums Morgan Sports Cars Morgan Three Wheeler & Super 3 2014 M3W or 2017 M3W

Those tank brackets are certainly different, they substantially reinforce the lower tank brackets that rarely crack or cause leaks. The ones that usually cause the problems are the forward brackets behind the seat bulkhead, the ones that are more difficult to see and get to. The chances of any tank bracket cracking is reduced by ensuring the retaining straps are tight but this again requires the seat bulkhead to be removed. There is an article about doing this tank crack preventative modification in the Morgan Three wheeler Club Bulletin magazine in may 2019, available online via. https://www.mtwc.co.uk/news-post/. Nice looking modification IMHO but I doubt it will prevent much tank cracking .

What I deduce from the mod is that MMC consider the cracking of the upper brackets to be related to deflection of the poorly supported rear of the tank. If this is the case then personally I’d have welded in vertical stiffener along the length of the new bracket, although ideally I would like to put in a bolt-in tubular extension to the frame to support the wooden base. I’ll monitor the side brackets to see if the cracks develop.

Thanks for the images IMHO.

As far as I can see, they have added more weight to the rear of the tanks, thus putting more load on the forward brackets and potentially making the situation worse. If you ever remove the bulkhead, it would be interesting to see if they have also reinforced those front brackets. In the meantime my advice would be to regularly check that the straps are good and tight.

Looked over the Brooklands this morning, seemed in excellent condition. Managed to take some photos of the frame, looks to have the A brace welded in. The owner said her late husband looked for a newer frame but the lower portion of the frame appears to be that of the earlier builds. Not sure though.
Unfortunately the pictures are to large to attach here. If anyone is whiling to give the photos a look I'd be happy to email or text them. Also, the owner had purchased the front suspension geometry correction kit. Would that be needed if the frame was newer?

Those brackets will add some protection to the plywood under the tanks, I am not sure what else ?

I did remove the bulkhead, the front brackets are unaltered and the straps are bar tight. The added weight of the new bracket is minimal compared to the fluctuation in the weight of fuel.

The new bracket is bonded as well as screwed to the wooden tank support, but I still would have liked to see a stiffener welded in along its length.

One thing that occurs to me is whether or not MMC are now fitting this mod to all new MTWs?

Looked over the Brooklands this morning, seemed in excellent condition. Managed to take some photos of the frame, looks to have the A brace welded in. The owner said her late husband looked for a newer frame but the lower portion of the frame appears to be that of the earlier builds. Not sure though.
Unfortunately the pictures are to large to attach here. If anyone is whiling to give the photos a look I'd be happy to email or text them. Also, the owner had purchased the front suspension geometry correction kit. Would that be needed if the frame was newer?

hope these upload.

The same thought crossed my mind, so I got down on the floor in the garage, and my March 2020 build M3W does not have them.

I think these issues were first noticed in 2017 so that’s surprising to put it mildly.