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Old 11-29-2019, 06:35 PM   #1
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Default Transit's Advanced B / B+ RV Chassis Mike Mas



Hello B Forum Users - I have another article for your guys which Ive been working on for over a year now. In this report, well compare the two leading RV van chassis' designs and suspension systems to disclose how they stack up when used for Class B conversions and Class B+ low and high profile RVs. Well compare, load height, rear track, tires, wheel base and a number of other factors that determine how well these chassis can support the weight of conversions and B+ RVs.

In this article we'll also discuss a new generation suspension system called "LiquidSpring" soon to be available for Sprinter chassis. This adaptive suspension system prevents roll moment, levels, kneels and more importantly improves handling as well as offer a ride as smooth as an air bag suspension.

Enjoy - Mike Mas

Click on the link below for the article:

http://rotory.com/transit/handling/
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Old 11-30-2019, 12:16 AM   #2
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IdleUp, while I have not always agreed with your professional takes on the class B world, you've hit on something that struck me about 18 months ago. I have had the benefit of driving many class B vans in the last two years. I help a very close friend with a moderately sized rv show in Northern California. Truth be told, I volunteer. But I love the atmosphere. I love seeing all the new rigs.. Meh, you get it.

So the thing I love the most, is driving all these rigs. Someone has to get them a hundred plus miles to the location. Quite frankly, it's a lot fun. My take: I truly enjoy most offerings from all the "big three" manufactures ".. Promasters, Transits, and Sprinters. I have been incredibly impressed by the ride quality of the Transits. It's a good balance of the tech that many of us want when spending over 100k, with a marginally better ride (Maybe better than marginal) than the Sprinters. I won't get into diesel vs. gas. That seems like a completely different argument. I personally like gas, though I own neither one.

Here's hoping that the Transit starts seeing more offerings for people that want higher end gassers. I'm thinking that we, the consumers, will only benefit from such a transformation.
Thanks.
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Old 11-30-2019, 01:25 AM   #3
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Thanks Mike for the Comparison, really interesting. I am hoping the gassers also make a great stand; with Ford, we know that they can be serviced anywhere across the land, and parts would be readily available. Ron
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Old 11-30-2019, 06:42 PM   #4
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Thanks for the reply's - My apologies for not including the gas engines because they certainly make good power and are very dependable. I kept it diesel to better compare the Transit to the Sprinter.

Coming from "Old School" I'm certainly not excited about Ford down-sizing from 3.2L to 2.0 on their new diesel, even though at 210 hp and 369 lbs of torque is major power for a van chassis. In fact, because of this cut-back, it looks like I'll be keeping my 2019 because I like larger displacements diesel engines. 369 lb of torque is asking a lot from a tiny 2.0 engine.

Cubes make power - I’ve had a few motorhomes with a 6.7L Cummins at 360 hp and 1000 lbs of torque and similar coach with a Cummins 8.9L with 350 hp ISL / 1050 lbs of torque, while spec-wise they are supposed to be close. There is not a hint of comparison, the larger displacement engine in a heavier RV would climb hills in 6th gear effortless, where the 6.7 would drop to 4th struggling to make it to the top.

This whole cubic inch / HP thing is getting complicated, especially with this new design of smaller displacement diesels. Engine manufactures make money on different hp ratings on the same engine. Typical is Cummins is now offering a “Re-programing” or tuning of the ISL 400 hp to 450-475 HP for a pennies on a dollar ($500) while manufactures charge another $10-12K when you order the coach for the so-called bigger engine.

Anyhow, the Powerstroke 5 cyl in my Transit is happy, it leaps off the line and climbs hills like a van. while its certainly not a Cummins, I think its a perfect power plant for the Transit considering it's great mileage.

Mike
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