The vanagon has a such a valve. But it´s biasing depending on
deceleration, not rear axle weight.
It´s the big rotten steel block on the front left chassis rail, two
brake lines go to/from it.

If replacing this with a rear axle valve is better?! I think no one has
tested so far.

Raimund

Am 12.06.2021 um 02:07 schrieb TODD P. LAST:
> I’ve wondered if you installed an adjustable proportioning valve could
> you better dial in rear disk brakes.
> Todd
> ’88 Westy
>> On 06/11/2021 5:00 PM Richard Smith (Smirby) < smirby@gmail.com
>> <mailto:smirby@gmail.com>> wrote:
>> I’ve certainly locked up mine (back brakes, anyway). Traffic,
>> downtown Vancouver, sudden slowdown in front of me… stomped the
>> brakes and squealed the back tires. Didn’t hit anything. Which was a
>> good thing, since it would have been my fault (rear ender…).
>> Despite the many complaints and concerns about vanagon braking, I’ve
>> found that it WILL stop as long as you are mindful about the weight
>> of the thing and don’t let the brakes heat up on a long downhill.
>> The ability to carry - MUCH MUCH - more than normal when you pack it
>> for camping or whatever probably gets all of us in trouble from time
>> to time. Suddenly the vehicle is a lot heavier than it was before.
>> This significant weight gain is not that common in a passenger
>> vehicle, but I think the vanagon should be driven as if it was an 18
>> wheeler, and the braking is very much tied to the weight on the day.
>> …r
>>> On Jun 11, 2021, at 4:40 PM, Jeff Palmer < w.jeff.palmer@ICLOUD.COM
>>> <mailto:w.jeff.palmer@ICLOUD.COM>> wrote:
>>> I didn’t realize it was possible to lock up the brakes!!
>>> Sent from my iPhone
>>>> On Jun 11, 2021, at 6:35 PM, Gene P < olgreywoof@gmail.com
>>>> <mailto:olgreywoof@gmail.com>> wrote:
>>>> So, if I’m getting it, Raimund and Mark (two guys that both know a
>>>> lot more than I do) are saying the same thing. Bigger booster gives
>>>> you no additional braking, it gives you the same braking with less
>>>> effort. You’ll FEEL like your van is stopping easier.
>>>> What they didn’t say but I wonder … with the bigger booster, while
>>>> more effort does not give you more braking, seems like it would be
>>>> easier to lock up the brakes. ??
>>>> From: Raimund Feussner
>>>> Sent: Friday, June 11, 2021 12:43 PM
>>>> To: vanagon@GERRY.VANAGON.COM <mailto:vanagon@GERRY.VANAGON.COM>
>>>> Subject: Re: Big Brake options
>>>>> What a difference in comfort!
>>>>> Because I know the brakes do identical jobs
>>>>> the BMW version is much easier.