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Old 04-03-2018, 12:40 PM   #1
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Hitch Height

What effect does hitch height have on towing quality? I have a Tow Master dolly that calls for a hitch ball height of 17-21”. I measured my ball height at 13”. The dolly coupler has a max tongue weight of 700 lbs. stamped into it. The RV hitch receptacle states 500 lbs. as the max tongue weight. How do I determine tongue weight. I want to tow a 15’ Honda CRV which I believe is around 4400 lbs. Thanks in advance😊
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Old 04-03-2018, 12:54 PM   #2
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The problem you will have is that since your hitch is low your master tow ramps will be angled up towards the rocker panels of the towed vehicle instead of level when you are loaded. On a car this is an issue as they can make contact with the rocker panel easier, with an SUV it may not matter. As to the tongue weight that depends on the build of the tow vehicle, how much is on the front axles, etc. If you figure out how to measure it I would like to know how as well... not like a trailer that you can set the tongue on a scale.
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Old 04-03-2018, 01:02 PM   #3
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The problem you will have is that since your hitch is low your master tow ramps will be angled up towards the rocker panels of the towed vehicle instead of level when you are loaded. On a car this is an issue as they can make contact with the rocker panel easier, with an SUV it may not matter. As to the tongue weight that depends on the build of the tow vehicle, how much is on the front axles, etc. If you figure out how to measure it I would like to know how as well... not like a trailer that you can set the tongue on a scale.
That’s exactly my dilemma as the car goes on just so far and there is no “kick stand” to set on a scale🤔
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Old 04-03-2018, 01:31 PM   #4
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When we had a popup camper, and wanted to know the tongue weight, I set a jackstand on our bathroom scale (don't tell my wife!). As I slowly lowered the coupler onto the jackstand, I stopped when I could see it would exceed the scale's capacity (300 lbs). At that point, I found a block of wood the same height as the scale. Put 2 of the jackstand's legs on the scale, and 2 on the block. Scale reading x2 = tongue weight (which was about 370 lbs).


There are various ways to create lever-arm scales, which will allow you to measure even higher loads with a 300 lbs bathroom scale. Google if needed.
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Old 04-03-2018, 01:52 PM   #5
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The issue here is you can't load a car on a dolly without it being attached to a hitch as it has negative tongue weight during loading... I am afraid to detach it after loading as it might be too unstable.
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Old 04-03-2018, 01:58 PM   #6
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The issue here is you can't load a car on a dolly without it being attached to a hitch as it has negative tongue weight during loading... I am afraid to detach it after loading as it might be too unstable.
You could see if somebody has one of these you can use:

https://www.weigh-safe.com
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Old 04-03-2018, 02:08 PM   #7
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Take some accurate measurements:
1. Measure the weight on the 2 front wheels (total = W).
2. Measure the distance from the dolly wheels to the front-wheel cradle (A).
3. Measure the distance (along the ground) from the dolly wheels to the hitch ball (B).


TW = W*(B/A)


For example:
Front weight of car = 1000 lbs
Distance A from dolly wheels to cradle = 24 in
Distance B from dolly wheels to hitch ball = 96 in


TW = 1000 * (24/96) = 250 lbs
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