GROSSI CR500 PROTO TYPE

heres some pics of the cr500 proto type believed to be grossis 83 works bike!

The 500 Grossi from ( by) Francis ( Belgium) !

if you look close at the prototype frame and the production belgium frame here you can see the differences.

I only see that the swingarm is longer on your frame ( parts welded) , and there's a second position for the shocks.
Others interesting differences ?

we have had the frame chemically dipped so as to find all the id marks,head stock stamped husqvarna prototype.theres no sleave for for the chain roller on the right hand side above the swinging arm pin hole,and the web is longer,on the left the web is flat and cut around the smaller angled part of the frame.also the frame was silver from the start rather than white.if you look at the aug 82 promotion pictures of the grossi bike take a look at the swing arm,if you blow the photo up you can even see the plates under the shock holes.the engines on the bench now so will let you know whats inside!spec says a choice of 4 or 6 gears!

Hi, I have a XC 500, 83 mod it has the same frame as the main tube that goes across where the top shock mounts are is open both ends i also have a CR500 ,82 mod and it is closed in as my 84, 430 and 250 wr are is that the way 83 is??

hi i have an 83 500 thats closed an 84wr 500 thats closed,also an 84 the same and an xc500 83 thats open! all abit random im afraid!

if you look at the foot rest on the grossi bike in the end of the frame below the footrest is a hole both sides with an m8 thread.im 99.9999% sure ours is the grossi bike.

I've looked at my 82-85 hva frames.
They all have a 8 mm hole at that place.

Chris Bigelow 250

"and the web is longer,on the left the web is flat and cut around the smaller angled part of the frame."
My understanding of english is not very good.
I don't see what you mean there !

I'm also surprised that works bike was let in that very poor state !

we bought the bike from a breakers in california just after christmas this year,it had been sat in a garage for years before that and at some point in its past found itself fitted with a later 84 plastic tank and seat,it was always going to be a risk buying a bike unseen from the states but with alittle home work and a number of phone calls to andy at hva factory we realised what it could be! the bike will be on show at the 2013 dirtbike show at stonleigh

Are you saying you think it is the bike pictured above or another prototype that might have been his?

i think its the bike above! i know he had a blue tank bike but that didnt have the lengthened swing arm,the bike we have here is identical in every way to the poster bike of august 82 right down to the welds and gusseting when the pictures blown up.it still has the gold handle bars and forks though faded.what we dont know is what the engine has inside other than the wiseco piston that we can see.i cant find any pictures of the right side of the bike anywhere on the net if anyone has any!

Cracking find that I'll look forward to seeing at Stonleigh...

two things...

1. I can't quite see properly, but is that the original inlet manifold on the Grossi picture or is it a Mossbarger ?

2. Where can I get one of those Grossi shirts from ? I had one in 1981 a couple of years before husky changed the colour schemes in Europe. I'd lobe to get one made.

Cheers,

Steve

Can you post more pics, please ?
ID marks pics also ?
Thanks
Michel

andy at hva might be doing a run so hes worth a call

photos to follow!!

Any idea why the swingarms are different?