How do I fix this?

[firstascent2002]

This is one of the fold down wheels for the 4 m avon that I use to dive off...

I have a 9.9 hp ob 2 stroke that I am about to change to 15 4 stroke with the obvious weight implications.

As you can see, at some stage, rolling down a slip way into mud, the sudden stop of the wheel has caused the bar to bend backwards at the point where the bottom of the dinghy transom applied the load.

I don' thing I can get it straight...any anyway....why would you. It works fine at the moment (but the weight of the new engine scares me) and any more bending would only increase fatigue. I think I either need to buy thick walled ali rectuangular box section to exactly the same dimenstions so I can replace it or I need to get some stainless which should be stronger.

Googling has not really helped me find a supplier...and suggestions?

Ta

 

[PuffTheMagicDragon]

From what I can see it is not really a bad bend and I would not touch it. You could always turn the tube round if you wish, thus reversing the direction of the bend. I would be more worried about the plastic wheel unless it has a metal tube that provides a bearing surface for the axle pin.

 

[firstascent2002]

The bend is worse than it looks and there is signs of fatigue (than whitening of metal).

The wheels are ok as the boat only travels from the frailer to the slip on them...20 feet of so...

 

[Seajet]

I think you're going to need upgraded material AND size for a 4-stroke 15, much heavier !

No real need for it to be stainless though, square section steel would do if handy.

 

[firstascent2002]

The problem is, to fit into the bracket and pivot as it currently does it needs to be exactly the same dimensions....hence the plan to upgrade to stainless....I just can't find it in the right size

 

[yoda]

This is one of the fold down wheels for the 4 m avon that I use to dive off...

I have a 9.9 hp ob 2 stroke that I am about to change to 15 4 stroke with the obvious weight implications.

As you can see, at some stage, rolling down a slip way into mud, the sudden stop of the wheel has caused the bar to bend backwards at the point where the bottom of the dinghy transom applied the load.

I don' thing I can get it straight...any anyway....why would you. It works fine at the moment (but the weight of the new engine scares me) and any more bending would only increase fatigue. I think I either need to buy thick walled ali rectuangular box section to exactly the same dimenstions so I can replace it or I need to get some stainless which should be stronger.

Googling has not really helped me find a supplier...and suggestions?

Ta

You will need to go up a size in wall thickness or perhaps fit an internal sleeve that is a good fit to beef it up. More importantly are you selling the old engine? If so PM me with a price and description.

Yoda

 

[PuffTheMagicDragon]

The bend is worse than it looks and there is signs of fatigue (than whitening of metal).

The wheels are ok as the boat only travels from the frailer to the slip on them...20 feet of so...

Oops! I didn't realise that the tube is aluminium!

 

[Robby]

The problem is, to fit into the bracket and pivot as it currently does it needs to be exactly the same dimensions....hence the plan to upgrade to stainless....I just can't find it in the right size

Could you make some beefier brackets to fit whatever box section you can get hold of?

 

[vyv_cox]

I can't tell what the size is. Metals4u here do stainless square tubing from 25 mm and solid bar from 6 mm.

Mild steel square tubing is widely available in all sorts of sizes, e.g. Metals4u do it from 1/2 inch.

 

[the_branflake]

Could you not slide some sort of metal tube down it to help support it?