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  1. luthj

    Centric Heavy Duty

    The main question is. Are you having trouble with brake force in general? Not being able to hold on a steep grade, or not being able to hit at least 0.7G braking acceleration for example. OR Are you having trouble with brake fade? Braking force drops as the brakes get hot. Such as a long...
  2. luthj

    Centric Heavy Duty

    Ceramic pads on their own won't necessarily improve braking though. And not all pads using the same material are equal. There are a huge range of pad materials, hence using the friction rating system is the most accurate way to determine changes. 15% better in what way though? Are you...
  3. luthj

    Pics of your VAN! Post up!

    Random photos from the last few years. Baja somewhere. Central AZ, off AZ-77 I think. Baja, Near Ojo De Liebre? Southern Utah? Southern Missouri.
  4. luthj

    New Camper Build Planning - Considering NPR (USA) - Feedback Welcomed

    Good info, thanks for posting. I had a brief email conversation with Ridge Rock, and they gave me a rough estimate of $35k. I believe my original request was to include super singles, and possible a front locker. I asked for more photos, as there is very few technical ones available. And...
  5. luthj

    Centric Heavy Duty

    I am not super familiar with commercial/truck brake materials. Most pads/shoes for vehicles in the USA use the SAE two letter code system (via SAE J866 spec). The first is the cold friction, the second is the hot friction. So a DG code pad would have 0.15-0.25 friction at temps between...
  6. luthj

    New Camper Build Planning - Considering NPR (USA) - Feedback Welcomed

    I appreciate the feedback. As mentioned I have some budget constraints. So while quite nice, the EarthCruiser CORE isn't an option at this point, priced at $140K+ for a chassis. Combined with a box and fit-out, total outlay would be $250k+ It also is likely more capability than I need. Of...
  7. luthj

    New Camper Build Planning - Considering NPR (USA) - Feedback Welcomed

    A really quick sketch/model on the 132" WB. 37" tires and a 3" lift. Obviously that is the most recent body style, as that was what I could find in a brief search. 15ft interior box is a bit excessive, but a place to start. 22.5' overall length is a bit more than I want.
  8. luthj

    New Camper Build Planning - Considering NPR (USA) - Feedback Welcomed

    Greetings, The wife and I have done a fair bit of overland travel over the years (Aus, NZ, Central America). Started in a tiny VW camper, currently in a 140WB T1N MB sprinter. The sprinter has has served us well for the last 10 years. The buildout and drivetrain are mostly custom at this...
  9. luthj

    Overland Sprinter Build

    Hello folks. It's been a while (over three years!) since I posted any updates. We have been working to build up funds for our retirement and next long term adventure. Most of the happenings with the van are posted over here. https://sprinter-source.com/forums/index.php?threads/41215/page-63...
  10. luthj

    Building a Micro-Split AC System

    It has been a hot minute. I replaced the unit in this thread with one made from a Midea-U inverter mini split. The new unit is much quieter, and a fair bit more efficient. See from post 1034 in the thread below. https://sprinter-source.com/forums/index.php?threads/41215/page-52#post-1531708
  11. luthj

    Yetti’s Pacific North West Exploration & Expeditions Picture heavy

    I really like ours. The big mod for me was ditching that provided router and power supply and switching to a DC native system.
  12. luthj

    Lifeline Batteries: Long Term Review and Capacity Test

    X2, for most applications an drop in LFP battery is superior. My Lifeline pack was replaced with a larger (capacity) LFP pack almost 3 years ago, and I haven't looked back. If you are killing lead acid batteries quickly, you likely need to address your charging regime. Lead acid does not...
  13. luthj

    MB 1120 Coming to America! Purchase, Build and Now Travel!

    Can you point me to the testing in question? I looked up that particular test, and it appears to involve a rotating bearing assembly which is intermittently sprayed with water. At first glance I am not sure how representative it is of a static electrical application. If I have some time I...
  14. luthj

    MB 1120 Coming to America! Purchase, Build and Now Travel!

    I understand the general advice, and its good. However I contacted the MG chemicals support, and they indicated this product is fine for use in this application. I can also confirm that it does reduce contact resistance for connections like this (have have measured on two packs compared to...
  15. luthj

    MB 1120 Coming to America! Purchase, Build and Now Travel!

    Mg chemicals 847 paste works great, and they said it was fine on aluminum.
  16. luthj

    MB 1120 Coming to America! Purchase, Build and Now Travel!

    If you opt to do this, make sure the BMS doesn't balance below about 3.4Vpc, and that your target delta V is not any smaller than 10mV. Measurement error can drive the BMS to create an imbalance at 3.2-3.3V (flat are of the curve). For those that charge at high rate (greater than 0.2C)...
  17. luthj

    MB 1120 Coming to America! Purchase, Build and Now Travel!

    You can change the lever length ratio (pivot location) to change the overall motion ratio. If you have a compass and a sheet of paper, you can design a linkage by hand pretty easily. Use the compass to circumscribe an arc corresponding to he motion distance for each linear side, then a second...
  18. luthj

    MB 1120 Coming to America! Purchase, Build and Now Travel!

    Active balancers can actually create imbalance on well matched packs. This is especially true if the balancer can't have its minimum delta V adjusted manually. This is because the measurement error is on the order of 2-10mv, and in the mid range between the knees, this error can result in the...
  19. luthj

    Sprinter 4WD Conversion Idea, GMT-800 IFS.

    That t1n is in the boulder area. But there are several that look really similar about. The ncv3 accepts a larger tire, but may need a lift. For my van, I can't go much bigger in the front without a fair bit of modification to the wheel well sheet metal. I could possibly do a 32" tire, if I...
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