I have found that you can get a good selection of drive connectors and other model boat parts from https://www.modelboatbits.com/. I use them for lots of bits and pieces and find that they offer a good service.
Derek.

I always use universal flexible connectors to be safe. I prefer the ones from Dumas. They are two connectors linked by a nylon "dogbone". Order the smaller size, 1/8" and then drill the ends out to nay dimension you need.

Hi chaps thanks for your input. l will get myself a couple of different types of connectors. l do have a bit of movement to the angle and position of the motor. stay safe all Jim

Hi Jim

I set up my motors and prop shaft using a solid connecter and then replace with one of the alloy connectors with the rubber middle section. To do this though you obviously need to use solid and flexible connecters of the same length.

Those cheap Huco connecters, often red, aren't the best quality and are really only to be trusted in fairly low-powered, low-speed craft as damage can be done if they break. Raboesch do make better quality ones though, from e.g. Cornwall Model Boats.

I do have to say though, that motor mount looks a little flimsy and alignment may well alter when power is applied! Perhaps a solid connecter is a better bet! Also, you don't look to have a lot of space between the motor and prop shaft to fit a flexible connecter in? Only one that might fit is one of those alloy spring type connecters. Having said that I've just remembered that you can get the stainless Huco type which are pretty short.

Chris

I normally use flexi connections even on a straight alignment. However the nylon ones require two brass inserts. The next best option is to use an anti-vibration coupling.
I would also not exceed the alignment with more than 10degrees on a flexi.

Hi, if you are confident that true alignment has been achieved, a solid connection would be OK.

However I would suggest some type of coupling to compensate for any misalignment.
Vibration and heat generation from friction are usually clues on misalignment.
Best of luck.