I used those ramps for years under my 71 aircooled bus. The only time
the ramps skittered away was when the tires first started to scrunch
them. Once the tire was on them they stayed put, they never moved once
the van was on them, though turning the steering wheel when the van was
on the ramps caused audible scrunching noises. I have not yet tried the
string method but it feels right. Easy to test. YMMV.

--
Mike "Rocket J Squirrel" Elliott

Mike wrote:
> But, will this help once the tires start up the incline and the ramps
>  start skidding away? Or do you just make a quick run at it and hope
> not to overshoot?
>
> I'm just sayin......
>
> Mike B.
>
> -------------------------------------------------- From: "Mike
> "Rocket J Squirrel"" <camping.elliott@GMAIL.COM> Sent: Wednesday,
> June 02, 2010 7:18 PM To: <vanagon@GERRY.VANAGON.COM> Subject:
> Re: Plastic Ramps
>
>> B Feddish wrote:
>>> OK, the only ramps I could find at any store for my van where
>>> those plastic ones. OK, 1 hour later and the bottoms are all
>>> scraped up from sliding forward as I try to drive onto them.. I
>>> even tried jacking the van up a bit and sliding the ramps under
>>> and trying to drive the rest of the way up. No good.  What is the
>>> trick to using these pieces of crap?
>>>
>>
>> I read a brilliant yet simple suggestion here last week: if there
>> isn't already a hole at the leading edge of the ramp, then drill
>> one. 1/4'' or so. Tie a bit of nylon rope or webbing or whatever
>> through that hole and lay it on the ground so the tire drives on
>> the rope first. The ramp ain't goin' nowhere once the tire pins the
>> cord to the ground. Oh, it may complain, but it's yours. Land that
>> baby.
>>
>> -- Mike "Rocket J Squirrel" Elliott 84 Westfalia: Mellow Yellow
>> ("The Electrical Banana") 74 Westrailia: (Ladybug Trailer company,
>> San Juan Capistrano, Calif.) Bend, OR KG6RCR
>