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Post by Jethro5 on Dec 8, 2021 10:29:52 GMT 1
My forks seals are leaking (1981 350) and I have purchased new genuine seals, clips, spacers, dust covers etc. I also purchased YSS fork springs and a YSS rear shock. I’m hoping when all fitted the bike will feel a little less like a pogo stick. My fork inners are fairly good but there is some light
scoring. I might as well get them hard chromed to finish the job properly. I’ve owned the bike for 5 years so that leaves about 35 years that I have no history for. Before I go ahead I’d like to try and confirm if the fork inners are genuine. Bike is not apart yet but is there anyway of confirming this (markings etc) when disassembled. I don’t what to spend the money on hard chroming if they are sub par.
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Post by abar121 on Dec 8, 2021 11:19:33 GMT 1
Not sure where you are, however Philpots will polish stanchions whilst you wait, if the scoring is very light.
That might be all that is needed. Post some pictures on here if you can.
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Post by Jethro5 on Dec 8, 2021 11:24:04 GMT 1
Should of said I’m in Australia. I’ll post some pictures when I get them out. However if anyone has any other information I’d appreciate it.
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Post by JonW on Dec 8, 2021 13:21:22 GMT 1
FYI A1 in Lidcombe did some for me, about $330/set. Else some copy ones from webbike are about the same price landed, maybe a little cheaper.
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Post by stirling11 on Dec 8, 2021 14:08:11 GMT 1
Hard chroming is fairly expensive for items of that size
You could try polishing them yourself with some stainless steel wool and something like Autosol or similar then finish off with a soft polishing mop on a drill, you’d be surprised how they turn out
If they are badly scored then you are better off getting new ones as Jon has suggested, Norbo does them too asfaik
I bought some F1 ones off him and they are spot on for quality
dont forget about replacing the sliding bushes on the stanchions, if your outer tubes are a bit graining, use of of the slides on the old staunchion to grind out any tight bits and removing any blasting media or paint o er spray, add a bit of o oil and move the stanchions up and down in other lowers to free them up then clean our with solvent, petrol works week, just to clean our any gunk
then use trans oil, bare swears by Mobil 1 and run through the bushes and through again then remove all the junk
hth
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Post by bare on Dec 8, 2021 17:49:11 GMT 1
Don't remember IF Lc forks do have user replaceable slider bushes?
Re-chroming the tubes is pricey and when all is said and done; LC forks are best described as Shite.
Thin/flimsy and barely damped. Not worth the time, cost and aggro IMO.
Unless a 'Has to be OEM' fetishist ?
Later version 350 shocks are an improvement... 31k types with their waisted (narrowed tops) fit LC Triple's perfectly.
These at least feature replaceable bushings and don't normally bend under braking forces, as do LC ones.
Damping is a little better but only a bit truth be told.
Various solutions to the knackered forks problem. G luck.
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Post by dusty350 on Dec 8, 2021 20:46:47 GMT 1
Lc forks and yokes are 32mm All Pv forks and yokes are 35mm with the waisted part on the early forks not being clamped by either the top or bottom yokes. Dusty  |
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Post by Jethro5 on Dec 9, 2021 0:00:08 GMT 1
Thanks for the comments. I’ll get them out and go from there. Ordered new slider bushes from Yamaha. Bit of a wait but cheapest option. Jonw Wemoto are quoting $303 a leg for Italian made tubes + freight and no stock so this is not an option. Norbo would be about $550 landed. Hear you Bare. Under no illusions about the action of the standard forks but they will have to suffice with a refurb.
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Post by JonW on Dec 9, 2021 1:55:16 GMT 1
The LC forks do have replaceable DU bushes, you just have to cut them down from larger ones as they are not available on their own - there are threads on here about this. Not wemoto, webike. Can be about 100/leg when on special, 130ish when not: japan.webike.net/products/21592367.html |
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Post by JonW on Dec 9, 2021 1:59:04 GMT 1
i should add my review before someone says 'the webike ones are crap...' without actually buying them. lol
I had to replace one on one of my bikes and it turned up fine, fitted well etc. I mentioned it in my 251LC thread. I believe it was Japanese, not chinese, by the paperwork s well.
The beauty of webike is they well japanese tools for sensible money as well... you can never own enough Vessel screwdrivers, let alone Koken, SKII, Tone and so many others lol
(And yes the one you want is RZ250 in Japan, if you want to shop for LC parts in Japan then you need to know what model you are looking for etc)
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Post by Jethro5 on Dec 9, 2021 5:58:45 GMT 1
Thanks Jon. I was looking at Wemoto and that’s what I saw. Should of read carefully. Webike may be an option but saying no stock for 4 months.
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Post by JonW on Dec 9, 2021 6:51:15 GMT 1
Thanks Jon. I was looking at Wemoto and that’s what I saw. Should of read carefully. Webike may be an option but saying no stock for 4 months. What did A1 say? The LC forks they did for me that also straightened, they werent miles out but they werent straight either. Was a great service, took a week or two is all. (tho they werent ready when they said they would be, but not long after) |
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Post by bare on Dec 10, 2021 19:12:51 GMT 1
Lc forks and yokes are 32mm All Pv forks and yokes are 35mm with the waisted part on the early forks not being clamped by either the top or bottom yokes. Dusty !? Early Waisted type valvie forks Exactly Fit LC clamps. They were designed to do that. |
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jam911
Thrash Merchant
Posts: 376
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Post by jam911 on Dec 10, 2021 20:05:08 GMT 1
The YSS rear shocker makes a lot of difference.
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Post by Yogi on Dec 10, 2021 20:44:06 GMT 1
Lc forks and yokes are 32mm All Pv forks and yokes are 35mm with the waisted part on the early forks not being clamped by either the top or bottom yokes. Dusty !? Early Waisted type valvie forks Exactly Fit LC clamps. They were designed to do that. I don’t think so  Not without valve yokes too |
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Post by dusty350 on Dec 10, 2021 21:24:32 GMT 1
I remember taking some Lc yokes to my engineering guys, years ago, to see if they could be bored out from 32mm to 35mm to take some Pv forks, to save me sourcing Pv yokes. The verdict was they felt there wouldn't be enough metal left around the clamping area to be a safe option, so I ended up buying some 31k Pv yokes. Rd250/400E/F forks and yokes were 35mm though  Dusty |
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Post by JonW on Dec 11, 2021 12:54:38 GMT 1
Why on earth would YPVS forks be 'designed' to fit the LC clamps? makes no sense. The LC was one model, the YPVS was the next generation. Parts were not designed to be backwards compatible.
Also.. how would you fit a 32mm clamp over the 35mm fork top to get it to the 32mm part? You'd have to wind it very open to get the 1.5mm extra all round, Im sure the clamps couldnt take that.
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Post by dusty350 on Dec 11, 2021 17:17:00 GMT 1
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Post by veg on Jan 3, 2022 22:52:29 GMT 1
As an owner of a set of 31k waisted forks they do fit an Lc in the 31k yokes the reason people use the waisted ones is because you can use the std Lc headlight brackets whilst improving the forks and retaining a std ish look. They definitely do not fit Lc yokes, unless you’re yuri geller and can some how bend metal.
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Post by steven on Jan 3, 2022 23:45:32 GMT 1
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