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Post by alankelly on Dec 4, 2021 23:42:38 GMT 1
Hi all
Hope you are all well
Anybody fitted Race Tec gold emulators and springs etc to standard forks and what was the final verdict good or bad and how much of a job was it to set up
It looks not too bad with a slight changes to the damper rod but is the cost / time worth it?
Best wishes and keep safe Al
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Post by bare on Dec 5, 2021 18:03:52 GMT 1
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Post by dougw on Dec 6, 2021 14:33:19 GMT 1
Yesterday I fitted some YSS emulators to a set of 4L0 fork legs, so far standard springs shortened by 10mm, YSS emulators add 15mm of preload, so that's a fractionally stiffer
spring with 5mm more preload.
Sorry , not taken it off the stands yet so no idea what the results are, might be a while before I get some time to ride it and some dry, salt free, roads.
So, no use at all then at the moment, but will report back asap.
I suspect it will still need some stiffer springs, I don`t like the idea of progressive rate springs like YSS sell, Race Tech 26.0 * 425mm 0.8KG springs are £134.90 + P+P from PDQ, a bit expensive but may end up going for them.
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Post by bare on Dec 6, 2021 17:51:23 GMT 1
Oil Viscosity determines (as before) rebound. I prefer Mobil 1 Synth ATF Try it?
Cut 4 coils from OEM springs, fit a bit of PVC pipe as compensation spacer.
Cheap, easy-ish and Effective.
You have all winter to experiment
Or you could spend and buy :-)
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Post by alankelly on Dec 6, 2021 19:31:37 GMT 1
Hi all Just like to say thanks to everyone for your input to my question The set up is to improve my old CB400F but thought the question would be better placed in this section Unfortunately YSS dont seem a kit for the old girl but I will check with Andy at YSS but Shocktec in the Uk are a Race Tech agent so at least if I go this way I avoid the customs duty if I bought from the states Sometimes you get what you pay for and to be honest most of us spend a fair chunk of money on our bikes / toys so £300 notes for a front suspension upgrade (springs and hopefully improved damping) is not allot in my book as just about to possibly stick some yss piggybacks on this just cos I like the look and will go with the rear disc conversion and the Dresda box arm  Best wishes and hope Santa brings you want you wanted Al |
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Post by ianr4863 on Dec 6, 2021 19:52:26 GMT 1
I have 31K forks on my LC . I recently had Race Tech Emulators and linear springs fitted by a local company who are a Race Tech dealer . I havent done too many miles due to the weather but my thoughts are that its a very positive upgrade .
HTH
Ian
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Post by alankelly on Dec 6, 2021 20:52:40 GMT 1
I have 31K forks on my LC . I recently had Race Tech Emulators and linear springs fitted by a local company who are a Race Tech dealer . I havent done too many miles due to the weather but my thoughts are that its a very positive upgrade . HTH Ian Hi Ian Thanks for the positive review I have the part’s info I needed from the USA site for the CB400F (required springs and emulators for a 80kg rider on a CB400F in street form) and just want to source parts over here as the customs can kill a purchase from the states Happy to do the modification to the damper rods (open up the lower holes to increase oil flow on compression so the emulators do the required damping instead) and even just got a spare pair of damper rods as a swap with someone for some CB400F engine parts. (pistons I no longer need due to the plan to bore to 460cc)so I can do the mods to the damper rods on the bench and get everything ready for when I am back on my feet in late January after my back operation next week (I hope) Thanks again Al   |
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Post by dusty350 on Dec 6, 2021 22:32:20 GMT 1
Hi Al I can vouch for the YSS piggybacks - not cheap, but really nice quality and multi adjustable, 2 year guarantee, and rebuildable  Dusty  |
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Post by alankelly on Dec 6, 2021 22:41:17 GMT 1
Hi (sir) Dusty? 🙏 Hope you and your family are well Yes they are nice units and Andy at YSS seems very helpful as he needed lots of info to look into if they can build these piggy back units due to them not being a standard off the shelf unit ( I guess due to the age of the bike as it has old style forked bottom shock mounting points) but I just love the look of piggy back shocks and it’s a nice modern twist on a CB400F that has a very non standard back end with the Dresda swing arm and a rear disc brake rather than a drum😁   Look after yourself and best wishes for Xmas and new year Al |
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Post by midlifecrisisrd on Dec 6, 2021 22:52:34 GMT 1
I'm also thinking of going YSS for the TR 🤔
ZRX shocks are the correct length for it and weight can't be far off
Steve
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Post by JonW on Dec 7, 2021 0:26:16 GMT 1
Yesterday I fitted some YSS emulators to a set of 4L0 fork legs, so far standard springs shortened by 10mm, YSS emulators add 15mm of preload, so that's a fractionally stiffer spring with 5mm more preload. Sorry , not taken it off the stands yet so no idea what the results are, might be a while before I get some time to ride it and some dry, salt free, roads. So, no use at all then at the moment, but will report back asap. I suspect it will still need some stiffer springs, I don`t like the idea of progressive rate springs like YSS sell, Race Tech 26.0 * 425mm 0.8KG springs are £134.90 + P+P from PDQ, a bit expensive but may end up going for them. Doug, which ones did you fit? I ask as the 4L0 forks are too small for the YPVS emulators i thought? |
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Post by alankelly on Dec 7, 2021 10:38:56 GMT 1
Yes I had a quick look on the YSS site and could not see any emulators for the CB400F as the fork OD is only 33mm and damper rod piston head is only 23mm hence me looking at Race Tec offerings
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robw
Thrash Merchant
Posts: 362
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Post by robw on Dec 7, 2021 13:49:52 GMT 1
Although not an lc, I have racetech emulators in my Z1000j based Endurance bike. They transformed the way it rode. Set it up using the pvc tube and put in thicker oil. It is very stable at all speeds and handles well on all circuits including Castle Combe which is very bumpy.
Rob
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Post by crogthomas on Dec 7, 2021 16:13:26 GMT 1
I ordered some MikesXS emulators years ago and only just got round to fitting them to some forks (YPVS) to find they are the wrong size.
They measure 23.8mm. Would they be any use to you?
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Post by bare on Dec 7, 2021 20:19:58 GMT 1
Easily size reduced (within reason) with a lathe
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Post by dusty350 on Dec 7, 2021 20:55:55 GMT 1
"Hi (sir) Dusty? 🙏 Hope you and your family are well" I'm good thanks Alan :)The bottom mount on the YSS Piggybacks are removable;  20210115_134516 by dusty miller, on Flickr Ignoring the spacers, the bottom "eye" unscrews completely, as they do on the length adjustable monoshock units. If you could find the correct YSS fork fitting to replace the eye, you'll be sorted Dusty |
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Post by midlifecrisisrd on Dec 7, 2021 21:31:47 GMT 1
As dusty says you can change the bottom fitting Suzuki gs1000 shocks seem to be 335mm and a fork lower fitting www.ebay.co.uk/itm/294169074167Its just a case of going through different models to find the right length They should be able to sort something out for you Steve |
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Post by dusty350 on Dec 7, 2021 21:40:06 GMT 1
+1 on that Steve. My 400 shocks are for an XJR400/1300. I searched for the right length, and top and bottom eye size, and came up with the Xjr shocks Dusty |
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Post by alankelly on Dec 7, 2021 21:59:42 GMT 1
"Hi (sir) Dusty? 🙏 Hope you and your family are well" I'm good thanks Alan :)The bottom mount on the YSS Piggybacks are removable; 20210115_134516 by dusty miller, on Flickr Ignoring the spacers, the bottom "eye" unscrews completely, as they do on the length adjustable monoshock units. If you could find the correct YSS fork fitting to replace the eye, you'll be sorted Dusty Hi Dusty Nice pic Andy at YSS is on the case and has said he will reply in a day or two with what I need Also tonight got a reply from Shocktech suspension in the Uk and they can supply all the Race Tech parts springs emulators and the required adapters for my CB400F front end Looks like an expensive Xmas but plenty to do as part of my “physio” exercise after my operation 😁😁 Best wishes Al |
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Post by dougw on Dec 13, 2021 14:34:48 GMT 1
Yesterday I fitted some YSS emulators to a set of 4L0 fork legs, so far standard springs shortened by 10mm, YSS emulators add 15mm of preload, so that's a fractionally stiffer spring with 5mm more preload. Sorry , not taken it off the stands yet so no idea what the results are, might be a while before I get some time to ride it and some dry, salt free, roads. So, no use at all then at the moment, but will report back asap. I suspect it will still need some stiffer springs, I don`t like the idea of progressive rate springs like YSS sell, Race Tech 26.0 * 425mm 0.8KG springs are £134.90 + P+P from PDQ, a bit expensive but may end up going for them. Doug, which ones did you fit? I ask as the 4L0 forks are too small for the YPVS emulators i thought? YSS238. According to the instructions they should be slightly too big. They fit into the 4L0 damper rod top well, and don`t appear to have any clearance issues, time will tell... Did a quick 15 odd mile test ride yesterday, wet roads so quite steady, but initial impression is less dive on brakes , copes with speed bumps well . Standstill "Bounce test" , they have more rebound and compression damping (ATF used for fork oil) |
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Post by alankelly on Dec 19, 2021 13:17:28 GMT 1
Hi All
Just a quick thanks for all the input to my questions
Decided to go the Race Tech route and emulators adaptors and a new set of firmer linear springs to match my pre Xmas body weight on order as they have a 6 to 8 week delivery time so should arrive once back on me feet
Just need to sort out rears and that the suspension sorted for the old girl
Best wishes Al
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Post by dougw on Aug 22, 2023 9:52:01 GMT 1
Doug, which ones did you fit? I ask as the 4L0 forks are too small for the YPVS emulators i thought? YSS238. According to the instructions they should be slightly too big. They fit into the 4L0 damper rod top well, and don`t appear to have any clearance issues, time will tell... Did a quick 15 odd mile test ride yesterday, wet roads so quite steady, but initial impression is less dive on brakes , copes with speed bumps well . Standstill "Bounce test" , they have more rebound and compression damping (ATF used for fork oil) 2,500 miles and one "Twisty Sprint" at Curborough later these fork mods are working well for me at a few pounds under 14 stone. Work OK with Mrs DougW riding pillion too. Would be too soft for serious track use , but an OK compromise for the pot holed , gravely tracks that are supposed to be main roads on the commute to work and general road work. I put a few more turns of preload on the emulator springs, I may take them back to the standard setting when I change the oil as I`m not planning on subjecting the old girl to more track abuse. (Supermoto wheels and tyres on my KTM250EXC for tarmac hill climbs is the current "competition" fad) |
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Post by Tobyjugs on Aug 24, 2023 9:27:26 GMT 1
Hi Doug it's great to hear some feedback on this type of modification, i have some Adriani parts in a set of forks. Never used them yet. Not sure if i want to put them in a road bike or one fot the track. I dont mind standard forks for my road skills to be honest.
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