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Old 09-08-2019, 08:52 PM   #1
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Bay Star 3906 - F53 Chassis Mods

We drove a number of Class A motorhomes on the F53 chassis before settling on our Bay Star. Besides overall quality putting Newmar on top for us I also felt it drove the best and was the quietest of the ones we looked at.

Even though it drives nice, it still exhibited some of the common behaviors of F53 based motorhomes - lane wander and getting pushed by the big rigs.

With that said, we decided that a visit to Henderson’s Lineup in Grants Pass was in order so we could run the rig through their road assessment service and get a prioritized list of recommended suspension modifications to dial in the ride.

So, here’s the run down on our experience.

Arrived at 8:30am for our 9am appointment. There is a gravel lot across the street from the service bays where we were able pull in and detach our toad. At 9am our assigned tech, Matt, came out and introduced himself and did a walk around. We talked about what I was experiencing currently and what I was hoping to improve upon. Once that was done, we did a road test and Matt explained what he was noticing and talked about some potential options to improve the ride. Once we completed our drive we pulled into the service bay and they got four corner weights. The next step was a physical inspection of the suspension. Matt invited me into the service pit and walked me through each suspension component. They also jacked the front wheels off the ground and checked for any play in the wheels and front suspension. After that he checked the alignment and then started putting together items for the service writer so he could get me a prioritized list of modifications.

At this point I met up with Doug and he walked me through the list.

Priority 1 - Safe T Plus.

Priority 2 - Rear trac bar.

Priority 3 - Upgrade to Koni shocks.

Priority 4 - Add a forward facing rear sway bar.

Priority 5 - Add a rearward rear sway bar.

Priority 6 - Sumo springs in the front.

Priority 7 - Sumo springs in the rear.

So, I did have a budget (and I went over so please don’t tell the DW) and elected to install the Safe T Plus, rear trac bar, front Koni shocks, since they were out of stock for the rears, along with the forward facing rear sway bar.

Once they had the go ahead it took them a full day to do the install, which required an overnight stay. The nice thing is you can stay onsite and they’ll provide you with a 30amp hookup.

In addition to being able to stay onsite, they also have a nice customer lounge while you wait. While there, we meet some great people who were in for a variety of services.

Overall the experience was outstanding. The staff at Henderson’s are wonderful and I highly recommend them for any suspension work you might need on any motorhome chassis.

As for the ride, I will say it is greatly improved and I feel that the expense was definitely worth it. I will be adding the rear Koni shocks when time and budget permits.

For those looking at a Bay Star 3609, here are my four corner weights. We were loaded as we normally are for a week trip, but I had more water than I normally carry. As for fuel, we had about 70 gallons on board.

Left front - 4300 lbs
Right front - 4000 lbs
Left rear - 7100 lbs
Right rear - 7100 lbs

So based on those weights they recommended a change in tire pressure. 85psi in the front and 75psi for the rears. We are 700lbs under on the front axel and 1300 under on the rear.

I had expected that they would recommend an alignment, but they said it wasn’t needed.

So, sorry for the long read and if you made it this far thanks for hanging in there.

I’d like to thank Earl II for answering my PM’s and this group in general for sharing your experiences.

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Old 09-09-2019, 08:45 AM   #2
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Thanks for posting. I hope your coach handles better. I haven't done anything to mine yet...seems to handle pretty good in stock form but I am going to do the CHF up front, when I get time.
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Old 09-09-2019, 08:52 AM   #3
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What did all the checking cost? In other words, if you didn't have them install anything, what did they charge? And is that up front cost credited toward work you have them do?
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Old 09-09-2019, 10:47 AM   #4
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We had a similar and positive experience at Henderson Line Line Up last fall. As I recall initial evaluation was about $500 and that charge was not credited to work, but a stand alone cost. The work made a huge positive difference in driving - without it we would have sold our then new Baystar 3009.
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Old 09-09-2019, 11:56 AM   #5
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The road assessment is $299.00, but you can get a coupon for $30.00 off so we paid $269.00. The cost isn’t credited towards any subsequent work. I feel that it was worth it to get the four corner weights and have the suspension, wheel and braking components looked at. If you’ve got a bit of an older coach, probably worth it as well as they will reveal any other items that might need attention. The assessment itself was close to 3 hours.
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Old 09-09-2019, 12:04 PM   #6
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Very nice write up, thank you. It's nice to hear things like this and Hendersons has a great reputation. I met , I forget his name now, I think Dave Henderson, not sure, at Quartzite a couple of winters ago after the hoopla. Nice guy.
Enjoy your rig!!
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Old 06-20-2021, 08:37 AM   #7
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Bay Star 3906 - F53 Chassis Mods

Well, after 2 years I finally got around to putting the rear Koni FSD shocks on. I ended up doing it myself and after a couple trips to Harbor Freight for tools I probably came out ahead a couple hundred dollars in savings.

Old shock
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Overall these past two years the ride has been satisfactory for what you get with a non airbag coach. I’m hoping to take a bit more of the bang out of the back with the new shocks. They only other thing I’m considering at this point would possibly be Sumo Springs in the front, but we’ll see if I’m up to the task and expense later this summer.

We probably only have another 5 years in the rig before we upgrade to our retirement rig. Right now we are set on a DP, but we shall see how things go, and what happens with diesel fuel prices. If they put a sin tax on it as I think is what we shall see vs an outright attempt to ban it all together, then the next rig I’ll spring for the full Liquid Spring setup.

There is no doubt after test driving a couple DP’s that riding on a full airbag suspension is ideal for our lovely interstates.
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Old 08-25-2021, 12:21 PM   #8
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John,

I am about to install Koni shocks as well. I have a 2020 BS 3005 on the 22,000 chassis. Any issues getting the old ones off? Do you need a jack to compress the old shock or will it slide off the mount safely?

Thanks
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Old 08-26-2021, 05:18 AM   #9
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Anyone with a Bay Star have any experience of the liquid spring set up, all 4 corners? Tiffin now offer this as a factory fit.

Those who have retro fitted on other F53 V10 and new V8 chassis are highly complementary. Its not cheap though.
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Old 08-26-2021, 08:09 PM   #10
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Quote:
Originally Posted by BigMC View Post
Anyone with a Bay Star have any experience of the liquid spring set up, all 4 corners? Tiffin now offer this as a factory fit.

Those who have retro fitted on other F53 V10 and new V8 chassis are highly complementary. Its not cheap though.
I have a 2021 Bay Star 3626 with the 4 corner Liquid Spring suspension. Had it installed at the factory about a month ago.

Chad
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Old 08-26-2021, 09:35 PM   #11
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I just heard about this a coupe of days ago, never knew it existed. It's called Liquid Springs, which changes out the suspension for about $10K....

https://liquidspring.com/rv-suspensions/
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Old 08-26-2021, 11:58 PM   #12
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Originally Posted by onechaddude View Post
I have a 2021 Bay Star 3626 with the 4 corner Liquid Spring suspension. Had it installed at the factory about a month ago.

Chad

Chad thanks for this, thats really helpful. Was this a 'test' install by Newmar with the people at liquid spring, as its not on the customer build list, or something liquid spring did with agreement of Newmar as a sort of demo.


Interested on your thoughts on the liquid spring if who have taken delivery yet.

Appreciated
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Old 08-27-2021, 08:06 PM   #13
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Originally Posted by BigMC View Post
Chad thanks for this, thats really helpful. Was this a 'test' install by Newmar with the people at liquid spring, as its not on the customer build list, or something liquid spring did with agreement of Newmar as a sort of demo.





Interested on your thoughts on the liquid spring if who have taken delivery yet.



Appreciated
I purchased my Bay Star at the end of April this year. Once purchased I called and spoke with Jim Wells at LiquidSpring and scheduled an appointment for end if July for 4 corner install. It took them a week to complete. Very professional, competent install team. They did a wonderful job, very neat. I would completely recommend them to anyone wanting a better driving experience in a motorhome.

If you'd like to ask any specific questions or talk, I'll be glad to send you my number and we can chat.

My comments on the installation. Driving the coach is 100% better. Ride on the coach is probably 70% better. My previous coach for 14 years was an entry level diesel pusher with air bag chassis. Ride is moderately better than the air bag coach. Drive is tremendously better than the air bag coach. Again, it was an entry level pusher coach. It really is a game changer for gas chassis in drive and ride.

If I could just get the Ford chassis shortcomings taken care of, it would really be perfect.

Chad
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Old 08-31-2021, 06:19 AM   #14
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Izzy and MJ of Endless RVing did an install on theirs. (They did get it for free - full disclosure). They say it is great.

https://youtu.be/2bBP0F6lIaM
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