Drama.... got to bob a tracked machine.
Well this is a new one... got to bob a tracked machine.
OK folks. It is clear to me that Mr. Murphy LOVES driving the XM474. This is one of the most snake bit projects I have worked on in a LONG time. This rubber track conversion has been HARD. Ready for the venting session...
This is the 3rd time I have attempted to install one of the bands. Each attempt illuminated another challenge... to include wrong stud length and wrong spacer thickness. I sourced studs from Canada and spacers from AZ. Now all is well with the kit. I put in the correct length studs and spacers so the road wheels are now good to go. The drive sprockets went on great too. When I attempted to finalize the right side install I could not get the band track around the idler wheel. It was not even close!
Left to come to Yuma for work and was looking at pics on the plane... ****. This machine is of the M113 family but there are different wheelbase lengths for different models!!!! I pulled tech pubs and found that (of the 5 road wheel machines) there are two lengths... 105" and 111". These numbers are for the road wheels only. This machine has an extra 3" on each side of the center road wheel = +6" and the band track was made for the 105" M113s. The band is one piece so you cannot simply add a link. Ref the two pics. The M113 has equal space between each road wheel and mine has extra gaps on each side of the center road wheel. All missile carrier (Lance, hawk, pershing) variants and the M548 has this extra space. M113s do not. There are no band tracks for the 111" machines.
As I sit here in the hotel I have pondered one of 2 solutions. Give up and sell the kit or cut the body and remove 6". I have invested 2 years in the acquisition of this (finally complete) band track conversion kit and even jumped through hoops to get a Texas license plate and registration for this machine in anticipation of a full rubber track conversion. Nope... can't quit now.
I spent the day on the phone with our SS heavy hitters that cut/weld/fabricate alloy armor and I feel that I am ready to begin the bob job when I get home.
The rubber track kit will end up on this machine and in service soon! Wish me luck. Any words of caution are appreciated.
1. Build jig
2. cut behind center road wheel, remove 3" and reattach.
3. cut in front of center road wheel, remove 3" and reattach
4. Have it done for fair parade on Oct 13th.
Justin Wehring
979 997 3112