How to check noseweight

A forum for discussing issues relating to trailers and towing MacGregor sailboats.
Kelly Hanson East
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Re: How to check noseweight

Post by Kelly Hanson East »

I just measured my 2002 :macx: trailer at 16.5 to the jack, and 28 inches to the centre of the ball.

I think that makes it a 28 inch/197 inch = 14% increase, using the wheel centre as a fulcrum.
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J.Teixeira
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Re: How to check noseweight

Post by J.Teixeira »

Remember to check the limit of the vertical weight (pressure) on the hook of the tow vehicle...

You may have surprises there...
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Trouts Dream
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Re: How to check noseweight

Post by Trouts Dream »

Kelly Hanson East wrote:I just measured my 2002 :macx: trailer at 16.5 to the jack, and 28 inches to the centre of the ball.

I think that makes it a 28 inch/197 inch = 14% increase, using the wheel centre as a fulcrum.
14% DECREASE, further out lighter the load

“Give me a lever long enough, and a prop strong enough, I can single-handed move the world.”
Archimedes
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DaveB
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Re: How to check noseweight

Post by DaveB »

There is also another point, having 10% of the total weight on the ball will give you much more traction in slime ramps.
Dave
Kelly Hanson East wrote:That 600# seems pretty heavy Curtiss. It will trailer fine, but it will be heavily loading the tow vehicle's shocks/springs. If you are towing short distances/under 50 mph I would let it be - if you are on long high speed runs, it might be worth thinking about it.

You have to have a lot of tilt on a single axle trailer to make a difference on the tongue weight.

There can be a significant difference between the jockey wheel weight and the weight at the ball. The difference will be roughly the ratio of the differences between the wheel/ball and the distance to the centre of rotation - without doing all the physics the axle will be a good approximation for this point. This could easily make the difference 100# or so.

The big safety issue for you folks with 120 kG tongue weight ratings (about 1/2 of the actual) is to make sure that your car can take this extra weight 'structurally' and that you arent going to break off the back of your car.
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Trouts Dream
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Re: How to check noseweight

Post by Trouts Dream »

Unless its a front wheel drive. But who would tow with a front wheel drive? :wink:
Kelly Hanson East
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Re: How to check noseweight

Post by Kelly Hanson East »

thanks Trout
Threms
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Re: How to check noseweight

Post by Threms »

Trouts Dream wrote:Unless its a front wheel drive. But who would tow with a front wheel drive? :wink:
iwe got an BMW E46 330D, and its werry close to the road when riding whith the trailer, so i know the problem. It can be solved by spending som time when loading the boat. Goes from 15 cm. (5 inch) to 25 cm.( 8 inch)

But BMW is a backwheel drive, and im selling it to get 4x4, becourse last time i should take the boat up, it was low tide, and the ramp was a bit slippery under my backwheels. The whole thing almost ended in the water.

I ended up pulling the trailer the first 2 meters whith at rope, before i could back up at put it on the hook.

So here goes the BMW, :macm: comes first :P

Daniel
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