I don't have a mm tape handy. The 21" is pretty exact (supposed XR). The 18.5 for the OEM was about, it's somewhere between 18 3/8 and 18 1/2.canyncarvr said:Can I presume the 18.5, 21 and such to be exact measurements? Not...'about'?
So...that's 470mm and 533mm respectively?
YepSo...that extra 13mm (over what my 'I think' length was) is going to make the required spacer tougher to make.
I bought they from a guy on ThumperTalk. He seemed cool and all that. I asked several times. He said they were from a 98 XR400, he removed them to add aftermarket springs. I deduced from this that they were OEM. Depending on what feedback I get here, I can I guess go back and ask him.Are these Honda OEM springs, or springs made by someone else FOR a Honda? That mostly just a curiousity on my part.
Well. It all depends on whether or not hanging the fork (uncompressed) in free air is a valid measurement technique. If so, I have about 1/2mm of gap. I was thinking of using 4mm of preload, so thats a 4.5mm spacer. If this isn't a valid way to measure the gap, I'm possibly already preloading the spring just to get the fork cap on (with the two spacer caps installed -- clearly they can be removed).To make this easier...what size spacer do you have in mind?
crazybrit said:Hehe. No, sorry, been busy on non-bike projects.
Agree w/ CC, need to start somewhere. Sure, sag is correct way but changing preload isn't as easy as on other forks.
As for the comment regarding the nut, I don't believe the fork cap will screw down all the way to the nut. If the nut is at the bottom of the rod threads. If you hold the nut and screw down the cap, all you are doing at the end is backing the nut up towards the cap (since the rod moves). I tried holding the rod, the cap won't screw down all the way to the nut.
crazybrit said:Anyways,here is another pic. With the 2 preload spacer caps removed this time. Fork is standing on floor (rather than free hanging), rod pulled all the way up, cap screwed all the way down. So I'm definately not preloading the spring with just the cap, have about 1.5mm of gap which agrees with what grump99 said (thanks). Odd thing is that the guy assured me these were from a 1998 XR400 which doesn't seem "late model" to me.
crazybrit said:Here is another pic. showing what I said above.
Anyways, this is all not that interesting other than to indicate that some XR400 springs are clearly longer than others and the 1 1/2" total spacer length mentioned in other XR threads may not be correct for you. :rotfl:
I still need to double check that the spring rate on these springs, is OK, will do that next.
Thanks for everyones help, especially you Brad :nener: :nener:
Tony
canyncarvr said:Check your tag code...I'm assuming 'Here's another pic' means there is another pic?
Something missing, 'eh? :nener: yourself.
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