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Old 09-20-2017, 02:37 AM   #1
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Installing SumoSprings on the front.

Of our 2017 Vegas 25.2

I know the suspension has to hang down to install them. Where do I put the jack and then the jack stands?
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Old 09-20-2017, 03:43 AM   #2
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Don't mean to seem harsh, but if you're asking this question, are you sure you should be doing the install? Safety!
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Old 09-20-2017, 12:11 PM   #3
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I was all set to do my own. Had a couple jacks and some jack stands. Then I got them and started reading the directions. My F-53 suspension on the Challenger may be different than your application, but when they started talking about taking off stuff and drilling holes in the frame, etc., I folded and found a RV shop to install.

The shop I found had never installed them before. For front and rear it took them about 7 hours if I recall correctly, and they had a ton of equipment available in a huge bay.
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Old 09-20-2017, 12:50 PM   #4
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I have NO mechanical abilities...
But it still seems reasonable to let the Pros handle the REALLY important stuff!
By "important": I mean the stuff that you absolutely do NOT want to ever have any problems with!
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Old 09-20-2017, 01:12 PM   #5
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The ones for the E350 chassis screw into the one hole that you unscrew the bump stops from, and I'm only doing the front. Unscrew the bump stop (one bolt) and screw the SumoSpring into that hole. Seems kind of simple. Thanks for the advice and concern, but I'm waiting to hear from someone with an E350 chassis. I have a local Ford dealer with a large truck bay as a fall back if it looks too hard or dangerous.
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Old 09-20-2017, 02:00 PM   #6
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Would an E-450 chassis be the same?
I'll need to add them at all four corners...

My bike will seriously be taxing the GVW ratings of our rig...
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Old 09-20-2017, 02:39 PM   #7
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The one for the front end of my Vegas looks like this:



No drilling, just screw it in.
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Old 09-20-2017, 03:12 PM   #8
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You'll want to place jacks on the frame near the axle your work in on with a jack stand as a back up.
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Old 09-20-2017, 04:43 PM   #9
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I had them installed on our Axis as I simply don't have the jack or jackstand for that.

I do have a set of ramps but the suspension would still be compressed--I could just get under there easier. It only took the mechanic about 30 minutes to install them on the front, however.
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Old 09-20-2017, 05:57 PM   #10
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Quote:
Originally Posted by JamieGeek View Post
I had them installed on our Axis as I simply don't have the jack or jackstand for that.

I do have a set of ramps but the suspension would still be compressed--I could just get under there easier. It only took the mechanic about 30 minutes to install them on the front, however.
Are you happy with the way they perform? What about tipping around corners? Thanks.
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Old 09-20-2017, 06:52 PM   #11
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Quote:
Originally Posted by jb1911 View Post
The ones for the E350 chassis screw into the one hole that you unscrew the bump stops from, and I'm only doing the front. Unscrew the bump stop (one bolt) and screw the SumoSpring into that hole. Seems kind of simple. Thanks for the advice and concern, but I'm waiting to hear from someone with an E350 chassis. I have a local Ford dealer with a large truck bay as a fall back if it looks too hard or dangerous.
I had them put on my 2018 Vegas 24.1 E-350 and they are great. It seems like it would have been easy to install myself but I had the dealer do it along with the steering stabilizer - been very happy with the driveability ever since!
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Old 09-20-2017, 07:27 PM   #12
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Originally Posted by jb1911 View Post
Are you happy with the way they perform? What about tipping around corners? Thanks.
They seem to have reduced the number of times the coach bounces after hitting a bump in the road; reduced that wallowing feeling. On turns it does seem to lean a lot less.
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Old 09-20-2017, 10:16 PM   #13
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I installed on my E450 class c on the front and removed them after a couple of trips and sent them back. It seemed like the steering got to be really jittery. I would hit a bump and the thing would just jump one direction or another. Very disconcerting. I had already installed Firestone helpers in place of the bump stops on the rear and helped a lot so I was figuring the fronts would help too. It seemed to me with the twin I beam front when one side gets unloaded from a bump then retouches the Sumo Spring it would kinda pull at the steering wheel unexpectedly. Just my thoughts.
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Old 09-21-2017, 12:05 AM   #14
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Quote:
Originally Posted by jb1911 View Post
The one for the front end of my Vegas looks like this:



No drilling, just screw it in.
Ron installed Sumos front and back on our Axis E450 ... he has a jack and jack stands and uses them often as he still likes to change oil on our vehicles...
If you know what you are doing, and can recognize what/where the bump stops are...and how to remove them and place the Sumos in place, correctly, you should be ok.....these are Rons words. He sez be sure to use LockTite ...

For those of you with the F53 frame...yes, the install is different...especially on the rear !

Ron
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Old 09-21-2017, 12:57 PM   #15
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I guess that it's time to get down on the ground, and look up under the big girl's skirt...

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Old 09-21-2017, 01:24 PM   #16
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Quote:
Originally Posted by jb1911 View Post
Are you happy with the way they perform? What about tipping around corners? Thanks.
We just had the SumoSprings you are considering installed on the front of our 2016 Axis 25.2 E450. With the 25.2's longer wheel base and shorter rear axel overhang, we were maxing out the front springs. By reinforcing the front springs the Sumo's have drastically reduced the severe leaning in corners and violent rocking in driveway entrances. I was concerned that stiffening the front springs would adversely affect the ride. But my wife, who suffers from back pain, says they have actually improved the ride. For us, SumoSprings are definitely a two thumbs up.
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Old 09-21-2017, 11:07 PM   #17
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Question:
With a 2017 E-450 chasis under my Outlaw: I'm given two choices
For the fronts: Either 500, or 1,000 pound capacity at 50% compression
For the rear: Either 1,500, or 2,800 pound capacity at 50% compression.

With my rig carrying a 1,200 pound trike in the garage (Plus all of the rest of our stuff!); would you suggest that I just go ahead, and purchase the heavier duty versions?
Thanks!
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Old 09-22-2017, 12:34 AM   #18
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don't use regular car jack stand, not strong enough
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Old 09-22-2017, 01:19 AM   #19
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Quote:
Originally Posted by Bob Denman View Post
Question:
With a 2017 E-450 chasis under my Outlaw: I'm given two choices
For the fronts: Either 500, or 1,000 pound capacity at 50% compression
For the rear: Either 1,500, or 2,800 pound capacity at 50% compression.

With my rig carrying a 1,200 pound trike in the garage (Plus all of the rest of our stuff!); would you suggest that I just go ahead, and purchase the heavier duty versions?
Thanks!
Note that your toyhauler has most of that storage space behind the rear wheels. Putting 1,200 lbs back there will actually remove some weight from the front axle. Thus putting the heavier Sumo Spring on the fronts may be counter productive.

If you can get the heaviest part of the trike as far forward as possible that may help (e.g. I'm guessing backing it in would accomplish this).
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Old 09-22-2017, 01:48 AM   #20
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Very happy with the Sumo's ! Huge difference on Highway "semi push".
Driving one handed again.
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