I have not had the chance to explore under a Syncro so learn mostly from list comments.

But, FAS had a Syncro skid plate for sale some years ago on their web site. 

Heck, I don’t even really know what that is.  It just sounds like something I’d never want to do to a vanagon!
That is need to drive it using a skid plate to get through.

Eric 

> On Apr 18, 2021, at 11:13 AM, Mike Miller <mwmiller6@att.net> wrote:
> 
> Hmm, never thought of that. I mean using the spare tire carrier as a skid plate. Genius!
> 
> 
>    On Sunday, April 18, 2021, 8:10:34 AM PDT, Eric Caron <ericcaron96@comcast.net> wrote:  
> 
> OK, 
> I thought they all had a skid plate there.  I guess that is a add on for later. 
> So my spare on the hook or loose bolt stands!
> Eric 
> 
> 
> On Apr 18, 2021, at 11:09 AM, Mike Miller <mwmiller6@att.net> wrote:
> Syncros have front mounted spares, or mine does and so do all the ones I've looked at, except where it's been removed, like mine. So I guess I was lying about mine having one, but it used to.
> 
>    On Sunday, April 18, 2021, 8:05:00 AM PDT, Eric Caron <ericcaron96@comcast.net> wrote:  
> 
> What?  You can’t say until you test?  
> 
> Can’t put yourself out on a limb? 
> 
> Be brave face the list commentary! 
> 
> Or we can start to guess for you.
> 
> Let’s see…
> 
> To balance a left corner lean you suspended a bowling ball from the under right side of the van then forgot.  It has been swinging into the van making the sound.
> 
> You changed out your front spare and didn’t tighten the bolt so it has been bouncing on the hook,
> 
> Oh, forget that one you have a Syncro.
> 
> When camping your shoes were wet so you set up a bungee cord under the van and hung them there to dry.  
> They have been slapping the van as you rocket over bumps.
> 
> Sort of a self delivered kick.
> 
> Can’t wait to hear the real solution! 
> 
> It better be good! 
> 
> Eric 
> 
> 
> 
> 
> 
>> On Apr 17, 2021, at 10:01 PM, Alistair Bell <albell@SHAW.CA> wrote:
>> 
>> I can’t say till I test drive tomorrow
>> .
>> 
>> Was a loose thing but now I’m not sure if it was the thing responsible 
>> 
>> Ab
>> 
>>> On Apr 17, 2021, at 6:46 PM, Eric Caron <ericcaron96@comcast.net> wrote:
>>> 
>>> Hey, no fair,
>>> 
>>> What did you think it might be?
>>> 
>>> Real answer can follow!
>>> 
>>> Eric 
>>> 
>>> 
>>>> On Apr 17, 2021, at 8:20 PM, Alistair Bell <albell@SHAW.CA> wrote:
>>>> 
>>>> And good god it was a wonderful day weather wise out here on Vancouver island. Like a summer day, no lie.
>>>> 
>>>> And speaking of lying , I lay under the van and I might have found my elusive clunking noise source, drive tomorrow will tell
>>>> 
>>>> Alistair 
>>>> 
>>>>>> On Apr 17, 2021, at 5:08 PM, Ralph Meyermann <ralphmeyermann@gmail.com> wrote:
>>>>> 
>>>>> Busy time of spring to get stuff done so we can play  with  our vans 😁
>>>>> 
>>>>>> On Sat, Apr 17, 2021, 3:26 PM Jim Arnott <jrasite@eoni.com> wrote:
>>>>>> 
>>>>>> Eric thinks so.
>>>>>> 
>>>>>> The server is responding to commands.
>>>>>> 
>>>>>> gerry.vanagon.com is not listed on the usual RBLs.
>>>>>> 
>>>>>> From here, it looks like it’s working
>>> 
> 
> 
>