Electric Tongue Jack Opinions: Atwood vs. Ultra Fab - Page 2 - Fiberglass RV


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Old 01-13-2010, 03:51 PM   #15
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Limit switches are internal to the jack and cut power to the motor before reaching the physical limits of the jack. Can save burning up motor if a person were to regularly run the jack to the physical limit and stress the motor.

Some people don't understand that when the motor starts to labor or slow down it is near the physical limit of the jack and it might be a good idea to stop before the motor gets too hot from the extra load. After motor gets hot and lets the smoke out it doesn't work anymore.
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Old 01-13-2010, 03:52 PM   #16
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This might be a dumb question, but can a power tongue jack have a wheel attached at the bottom? I have the swing up jack with a wheel, it's pretty convenient to get close enough and then I can wiggle the trailer around on it's wheel to hook up just right.
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Old 01-13-2010, 09:49 PM   #17
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Quote:

George, what are limit switches? What is the advantage of having them on both ends of the stroke?


I will be towing the trailer to our house tomorrow morning. If time permits, I will take it to a public scale on route.

I've been told that my 19 Footer is about 500 lbs heavier than the 17.

In theory, my rig's weight is as follows:

2400 Lbs: Dry Wt.
3200 Lbs: Gross Wt.
348 Lbs: Tongue Wt.

I have no idea how this translates into the power requirements for the tongue Jack!
Curtis answered the limits switches question well.

The relationship of tongue weight to jack capacity depends on how you plan to use the jack. Simple lifting and lowering the tongue weight needs a jack with equivalent or better capacity. So for your 350 lb tongue weight, a jack with a 1500 (I think this is the smallest Attwood but limited to 2" ball) weight capacity should be enough. I would assume that a higher capacity jack could take more abuse.


My use of the jack, besides lifting and lowering the tongue, includes installation of the weight distribution bars. After attaching the trailer to the hitch, I need to lift the trailer's tongue with the truck high enough so spring bars can be placed in their friction saddles then lower it. In my application, I can see that the jack is laboring during the truck lifting phase. For my 700lb tongue on 21' trailer the 3500 lb with recalculating ball bearings for extended life was appropriate. Not knowing if there are any standards for advertising jacks capacities their numbers should be taken with the grain of salt.


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Old 01-13-2010, 10:26 PM   #18
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Curtis answered the limits switches question well.

The relationship of tongue weight to jack capacity depends on how you plan to use the jack. Simple lifting and lowering the tongue weight needs a jack with equivalent or better capacity. So for your 350 lb tongue weight, a jack with a 1500 (I think this is the smallest Attwood but limited to 2" ball) weight capacity should be enough. I would assume that a higher capacity jack could take more abuse.


My use of the jack, besides lifting and lowering the tongue, includes installation of the weight distribution bars. After attaching the trailer to the hitch, I need to lift the trailer's tongue with the truck high enough so spring bars can be placed in their friction saddles then lower it. In my application, I can see that the jack is laboring during the truck lifting phase. For my 700lb tongue on 21' trailer the 3500 lb with recalculating ball bearings for extended life was appropriate. Not knowing if there are any standards for advertising jacks capacities their numbers should be taken with the grain of salt.

Thanks George.

I will, like you, be using the Jack to install the Weight distribution and anti sway bars. The whole point of this purchase is to protect my back!

My understanding is that once you determine the jack weight capacity that corresponds to your tongue weight, you go up one more level. So that if my tongue weight corresponds to a 2500 Lb Jack, I should buy a 3000 Lb jack. In that way, I will be sure not to stain the unit.

I plan to take the trailer to a moving and storage company with the public scale tomorrow. I am assuming that they will be able to determine my tongue weight.

I must say, this is becoming quite a project!

Good info everyone. You are helping me a lot!

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Old 01-14-2010, 06:16 AM   #19
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An issue I've heard about with the electric tongue jacks is the plastic covers. As we all know plastic has a tendency to chalk, crack and fall apart due to UVs... we've seen it happen with all types of vent covers, etc. on our molded trailers. Once cracked, plastic is difficult to repair. And, the plastic cover protects all the gears and electrics on this jacks. Prior to installing, it may be a good idea to paint the plastic cover with UV protectant paint. Or, keep the head of the unit covered at all times except while under tow. The link Bill provided may be that solution.

Quote:
Camping World has a vinyl cover for electric jack's

http://www.campingworld.com/shopping/item/...ack-cover/34822

Bill K
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Old 01-14-2010, 04:06 PM   #20
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Quote:
An issue I've heard about with the electric tongue jacks is the plastic covers. As we all know plastic has a tendency to chalk, crack and fall apart due to UVs... we've seen it happen with all types of vent covers, etc. on our molded trailers. Once cracked, plastic is difficult to repair. And, the plastic cover protects all the gears and electrics on this jacks. Prior to installing, it may be a good idea to paint the plastic cover with UV protectant paint. Or, keep the head of the unit covered at all times except while under tow. The link Bill provided may be that solution.

Hi Donna,

I believe you posted a similar thought in another thread on electric tongue jacks.

The product in Bill's link is a universal cover.

I like the idea of UV protectant paint as well.

JMP
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Old 01-14-2010, 05:23 PM   #21
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Name: Michael
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You guys are BAD!
I've now ordered one of these electric tongue jacks! Am I easily influenced? I guess so!
I've been pondering what devices to make my Egg Trailering more fun and then this
thread came up. I've seen these but never really considered it until I heard all of
the pro's, con's and other. Now it seems that I MUST have one! I really can see how it
would be a benefit, so I took the plunge!
With the side wheel screw jack wheel leveler and this jack, it should be much easier
and better to level up.
Thanks, guys!
Now, if I can still keep my Egg within safe towing weight, I should be OK.
However, no more good ideas, eh!
Mike .....>

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Old 01-14-2010, 05:38 PM   #22
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Well, I had a chance to look at my trailer today.

The engraving on the tongue reads: 700 tongue weight. Total allowable gross trailer weight is: 5000 lbs (can that be right?)
I didn't see a total dry weight.

So, my question is: what Jack weight corresponds to the tongue weight?

DOES BARKER MAKE A VIP 25OOLB JACK? I could only find a VIP 3000 or 3500!

I'd like to contact them. Does anyone have a website for the manufacturer?

Thanks all!
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Old 01-14-2010, 06:01 PM   #23
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http://www.barkermfg.com/

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I'd like to contact them. Does anyone have a website for the manufacturer?
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Old 01-14-2010, 06:27 PM   #24
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Quote:
.............................

The engraving on the tongue reads: 700 tongue weight. Total allowable gross trailer weight is: 5000 lbs (can that be right?) .............................................
...................So, my question is: what Jack weight corresponds to the tongue weight?

I'd like to contact them. Does anyone have a website for the manufacturer?

Thanks all!



A tongue weight should be between 10-15% of the trailer weight so 700/5000 lb looks good.


The tradeoff between high versus low capacity jack could be in reliability and speed of lifting, you could ask this question. I would also ask if all Barker jacks have limit switches and recalculating ball bearings.


George.




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Old 01-14-2010, 06:59 PM   #25
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Hi Donna,

I believe you posted a similar thought in another thread on electric tongue jacks.
Echo, echo, echo. Are you saying I'm repeating myself Sometimes that happens with age
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Old 01-14-2010, 08:46 PM   #26
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Cool

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Echo, echo, echo. Are you saying I'm repeating myself Sometimes that happens with age

Actually, I believe that a good idea is worth repeating. Your thoughts regarding protecting the tongue Jacks from ultraviolet light is a good one that I would never have thought of had I not seen it. Your repeat of this idea was great in that it reminded me not to forget.
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Old 01-15-2010, 12:18 PM   #27
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This might be a dumb question, but can a power tongue jack have a wheel attached at the bottom? I have the swing up jack with a wheel, it's pretty convenient to get close enough and then I can wiggle the trailer around on it's wheel to hook up just right.

I spoke with Bob at Barker Mfg. Regarding your question, he said that they do not attach a wheel at the bottom of their electric Jacks and to do so would be dangerous. I asked him if he knew of a way to attack a wheel to the side of the tongue so that you could pivot the trailer into, say a small parking spot. He said he did not thing you could do such a thing.

That was a good question.
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Old 01-15-2010, 02:13 PM   #28
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Thanks for checking, I figured there must be some clearance issues why it's not offered with a wheel.
Quote:
I spoke with Bob at Barker Mfg. Regarding your question, he said that they do not attach a wheel at the bottom of their electric Jacks and to do so would be dangerous. I asked him if he knew of a way to attack a wheel to the side of the tongue so that you could pivot the trailer into, say a small parking spot. He said he did not thing you could do such a thing.

That was a good question.
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