I know how to measure the wheelbase of a 4-wheel vehicle, but what about a 6x4 or 6x6? I'm considering a conversion from the CCKW353 to a 352 based gun tractor and need to do some preliminary scale sketches for the work required.

a 6X6 or 6X4 are measured to the centre point between the two rear axles. Then there is normally a second "CC" measurement which is the centre to centre measurement of the two rear axles.

for example a WW2 GMC-CCKW 353 (LWB) has a wheelbase of 164 inches and the "CC" measurement is 44 inches.

so the position of the rear most axle is 164 plus 22 = 166 inches.

I will scan a picture and add it to this post for you as well

Thanks Mr.Roo. I can get some plans together now, loads of photos but no drawings!! Oh well - out with the pencil & calculator.

Hi,

By memory according with an article at Military Modelling to convert the 353 chassis in a 352 it's needed to cut 14 mm (to be confirmed) to the longitudinal beams and take off the medium transversal beam.

For the 352 you also need to built or use PE for the spare wheels holder behind the cabin.

I can confirm and check more details for you if you need them.

HTH

the above is correct. Although you can use the spare wheel mount from the Italeri water tank truck

Hi,

I've found the MM 1981 Manual) with the article and as I've said previously and Mr. Roo confirmed the 352 chassis it's 14 mm shorter then the 353 chassis at 1/35.

From the article:

#quote
... The first step with this model is to shorten the chassis frame by the relevant amount - 14 mm in this scale. The sections shoul be removed at a point roughly level with the spare road wheel bracket location and then the two ends re-joined. These joins should be reinforced on the inside with strips of plastic card and then left to dry throughly, ensuring they are straight an true. Then the chassis can be assembled, leaving one of the transverse bearers (part no. 7) and also the aforementioned wheel bracket which is not required. ...
#unquote

Note: the author has done the conversion with the ITALERI kit.

HTH

Thanks for all the help guys. I'm planning on using the Heller kit which I can get fairly cheaply for my softskins build entry.