Here's my now complete and ready to restore Spaceliner that I got at the Trexlertown meet on October 7. Izee2 helped me complete it by selling me the missing hubcap and crashrail.
I'll let you in on something, Jim; you've unknowingly 'Frankened' your bike. That's a base model #46303 Spaceliner, and that version didn't come with a hubcap or seat crash rail. They look nice on the bike, but they aren't original equipment. Everything else on it looks original.
Here's a pic from a 1966 Sears catalog. By the way, the base 46303 model (and the ladies and 24" wheel versions) were the only model Spaceliners to be manufactured for the entire five year life of the Spaceliner brand (64-68). The various chrome 'optioned up' models with top-tube mounted, horizontal tanks ran for two years (64-65) and were then phased out when the down-tube mounted, 7-shape, thrust-forward tank version was introduced from 66-68.
BTW, yours was manufactured between 66-68. The tip-off is the pedals. The only change made between 64-68 was that the 3-jewel reflector pedals on the men's 46303 were changed to a single diamond shape reflector from 66-68 to correspond with the pedals on the new thrust-forward design Spaceliners.
Here is the picture from the 1964 Sears Christmas catalog showing the type of truss bar set I am looking for on my standard front fork bike. I drew arrows pointing to the truss bar set. I believe it has to be mounted onto the fork steer tube before the lower bearing race is pressed on there, before the fork is installed in the headtube on the frame of the bike. I don't think this item is too common, nor is it very easy to find. The catalog picture seen here shows the truss bars on a chrome deluxe Spaceliner, but the bike has a regular fork on it with no springer fork. The 1964 catalog does not have a picture of the standard painted frame Spaceliner, so I really do not know whether the standard bikes had these or not. Lets just say that I want to turn my 'liner into custom a deluxe equipped standard bike. I want to dress the bike out, in other words, minus the chrome frame.
Jim.
Those truss bars, as you call them, weren't available on the deluxe Spaceliners. They were, however, available on six of the mid-range Spaceliners (there were 20 total Spaceliner models in 64-65 and 30 models in 66-68). As you can see from the picture I posted above, the truss bars were not standard on the model #46303 that you have.
You can find the truss bars on the following models.
#46940 mens 26", 1-speed, non-deluxe
#46980 mens 26", 2-speed, non-deluxe
#46960 boys 24", 1-speed, non-deluxe
#46950 ladies 26", 1-speed, non-deluxe
#46990 ladies 26", 2-speed, non-deluxe
#46970 girls 24", 2-speed, non-deluxe
FYI, none of these models were equipped with a springer fork, and they were also missing rear tail lights. They did come with front head lights and a horn, the same as found on the deluxe versions.