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 > Anyone using Happijac 4800 jacks?

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Joe417

AL

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Posted: 09/09/15 12:01pm Link  |  Quote  |  Print  |  Notify Moderator

I need to replace one jack. It's bent just enough that it's pulling a lot of current, and sometime blows the fuse for the right side. The jack works great with a hand crank but I want all 4 to work with the remote.

Currently have Happijac 4500's, rated at 1900#. They are ball screw jacks and handle the weight ok.

Yes, I know everyone calls them "Crappyjacs", but I'm not going to the expense of replacing all of them at one time. I want to wait till they need to be replaced and then add the heavier jacks.

The 4800's are rated at 2800# but are ACME screw.

I talked to Happijac. They said they are swappable, just a bit longer and heavier. They claim they are better even though they aren't ball screw. I would love to feel of them to make a hands on decision but there are no dealers near.

Would like to know if the ACME screw mechanism handles the weight as well as the ball screw.

I know the 4500's work better than the 4150s.

Has anyone had the opportunity to compare these two or have them on your camper?
If so, what camper are you lifting with them?


Joe & Evelyn


54suds

adk mts.

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Posted: 09/10/15 06:33am Link  |  Quote  |  Print  |  Notify Moderator

with crappy jacks long long long of history of knowing they had poor quality issues and" knowingly "continue to produce and sell a substandard product ,why would anyone trust their statements about improvements . this is a company that for years did little or next Nothing to help the people stuck with their junk ,yes you could send them back for possible repair but only at an very high cost to the customer . In the past I personally have had to replace 6 of their jacks and right now have at least 3 that should be replaced
Torklift could teach them plenty about quality and customer relations



acme verses ball info link

* This post was last edited 09/10/15 07:23am by 54suds *   View edit history


2017 Chev ltz double cab,drw,4x/torklift tdn's,30k super hitch 36" extention
1999 Bigfoot 1011

Super_Dave

Harrisville, UT

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Posted: 09/10/15 08:24am Link  |  Quote  |  Print  |  Notify Moderator

After reading the info in 54suds link, I think that I would personally stay with the ball screw for the mere reason that I could drop the jacks to the ground without power. The acme sounds like it needs power to do anything to overcome friction.


Truck: 2006 Dodge 3500 Dually
Rig: 2018 Big Country 3155 RLK
Boat: 2003 Jetcraft 2125 - Yamaha 150 HP & 8 HP Kicker


54suds

adk mts.

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Posted: 09/10/15 10:10am Link  |  Quote  |  Print  |  Notify Moderator

after several hrs reviewing info on old and the new happi jacks it is my opinion they reduced parts costs ,reduced their production costs and then used "New" as an doubt-able!!!! EXCUSE to raise prices


relative experience:
4 years machine shop 4 years machinist mate Navy , 1 year production quality control inspector in metal fab at Bossert Mfg Utica ,ny 1 year machine op at Chicago pneumatic , 26 years supervisor of both metal fabrication and soap mfg industries , then 6 more years shop supervisor metal furniture products & fabrication in another factory site

* This post was last edited 09/29/15 10:07pm by 54suds *   View edit history

bigfootford

Fair Oaks, California

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Posted: 09/10/15 10:14am Link  |  Quote  |  Print  |  Notify Moderator

54suds wrote:

with crappy jacks long long long of history of knowing they had poor quality issues and" knowingly "continue to produce and sell a substandard product ,why would anyone trust their statements about improvements . this is a company that for years did little or next Nothing to help the people stuck with their junk ,yes you could send them back for possible repair but only at an very high cost to the customer . In the past I personally have had to replace 6 of their jacks and right now have at least 3 that should be replaced
Torklift could teach them plenty about quality and customer relations



acme verses ball info link


16 years on my Hjac's. I use them a lot. Camper has close to 200,000 miles on it now. Just grease 2 times... Do have some rust on the outer shells. Rocks do create pits... Sand and paint soon.

Jim


2000 2500 9.6 Bigfoot,94 F250, Vision 19.5, Mich 245/70XDS2's, Bilstein shocks, air bags/pump, EU2000, PD 9260,Lifeline 100ah, 200W. solar, Morningstar Sunsaver 15A/ display panel, Trimetric, Delorme/laptop, Holux gps rec,led lights, Wave-3 heat.

54suds

adk mts.

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Posted: 09/10/15 11:02am Link  |  Quote  |  Print  |  Notify Moderator

consider your self very lucky

this is my first run in with hj all four were just like this ( have many more pix ) less than 1 year old
hj denied any responsibility however Mark Holmes at Bigfoot stepped up and had them replaced when I showed them to him at the factory

[image]

Joe417

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Posted: 09/10/15 11:33am Link  |  Quote  |  Print  |  Notify Moderator

No rants please. I know everyone has opinions on products. I've had Atwood manuals and now Happijac electrics, I've had only minor issues.

Back to my topic.

Does anyone have these on their camper yet or have you compared them with the ball screw jacks??

54suds

adk mts.

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Posted: 09/10/15 12:02pm Link  |  Quote  |  Print  |  Notify Moderator

need to replace one jack. It's bent just enough that it's pulling a lot of current, and sometime blows the fuse for the right side. The jack works great with a hand crank but I want all 4 to work with the remote.


with your past motor problems I'd suggest you change motors around to see you still blow fuses on that jack ( corroded plug ?)

egarant

Mission Viejo CA

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Posted: 09/10/15 02:29pm Link  |  Quote  |  Print  |  Notify Moderator

Here is a write up on TCM on the new 4800 jack

4800


2013 RAM 3500 Laramie Crew Cab 4x4 DRW HO Cummins/Asin Trans, 4.10's
2013 Eagle Cap 950
280 Watts Solar, 2K Watt Xantrex Inverter, Blue Sky MPPT Charge Controller, Lifeline Batt, Torklift Tiedowns/Superhitch, FOX 2.0 Performance Series Shocks w/CD adj.


Glacier D

Port Orchard, Wa

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Posted: 09/11/15 11:04am Link  |  Quote  |  Print  |  Notify Moderator

Just replaced all my HJ 4500s with the 4800s. My 4500s were 3 years old (had 4600 before that) and not holding up at all. One 4500 seized up and the other 3 were not far behind. Hopefully the 4800s with the zinc platting will hold up better. I'll let you know after this winter.
Customer service at HJ was good, talk to Gary, he cut me a deal again.


2011 Dodge Ram 3500 4X4 Crew Cab/LB, Rancho RS9000XL, Stable Loads, Superhitch and FastGuns. 2009 Eagle Cap 1050, Hickory interior with on-board generator, A/C and Honda EU2000

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