SOHC.co.uk Forums > CB350/400
Re: TEC shocks for '77 CB400F
mattsz:
I contacted TEC Bike Parts USA - they said some of the other bikes that those shocks fit use a grab handle on the shock mount, hence the narrower top. He suggested I just get some m16 washers to fill in the gaps. Didn't offer any, though - oh well.
To be clear: the mounting nut/washers(s) should hold the shock securely in position, but not actually clamp down on it enough to prevent it from pivoting, yes? I don't have any original mounting hardware on either side, so I can't compare with what was there...
Bryanj:
Well they do need to pivot as swing arm moves just not much
mattsz:
--- Quote from: Bryanj on July 07, 2020, 08:18:27 PM ---Well they do need to pivot as swing arm moves just not much
--- End quote ---
mattsz:
Sorry - more questions about the shocks...
You may recall the bike came to me with bodged mounting hardware securing the tops of both shocks...
http://www.sohc.co.uk/index.php/topic,17461.msg199015.html#msg199015
I'd like to mount the TEC shocks - but I'd like to get an idea of how the original hardware secured the shocks. My parts book shows a simple acorn nut and single washer - officialy, a "WASHER, PLAIN, 10.3MM." Can someone tell me the actual inner and outer diameters, and thickness, of this washer? Is it bigger than the top mount opening that the rubber bushing fits into?
On the advice of the TEC guy, I looked at M16 washers to fill in the gaps left by the narrow top mount of the shock, but they seemed way too big for that purpose - both in thickness (3mm) and in OD (30mm!) - nothing like the size provided with MrDavo's shocks (see his pic above). I wanted to find a spacer thin enough that I could use one on each side of the mount, to "center" the mount roughly where the original one would be. The thin stainless steel shim washers I found look more like the size of MrDavo's, and they work well for centering the mount, but their OD is pretty much the same as the opening for the bushing, so while they may keep the bushing well-centered, I don't think they would really keep the shock mount from shifting sideways off the bushing if there's any proper force applied in that direction. A larger washer against the acorn nut would keep the shock from coming off, of course, but it seems like the shock could be pushed inwards past the washer with the right encouragement.
So - can anyone check the dimensions of that 10.3mm OEM washer (P/N 90527-230-000)?
MrDavo, might you know the dimensions of the spacer washers that TEC provided with your shocks?
mattsz:
Bump. Would someone with original hardware be willing to measure the ID, OD and thickness of the washer on the top shock mount?
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