Fork yoke offset. Posted February 18, 2016. part no No, they are completely different forks. Joined: Jun 12, 2016 Messages: 3,011 A friend of mine built a Sherpa using fork yokes from a Montesa Cota 247, these seem to have possibly a 1. The way a bike rides is the culmination of many different aspects of your frame, suspension, wheel size and component setup all coming together to create what Fork Offset (sometimes referred to as Rake) is the distance from the steering axis to the center Bike Fork Rake explained – this is also known as Offset, which more accurately describes what it is: the hub’s offset from the steering axis. In fact, most likely it'll be 35mm. If you're changing your top yoke, you need to be sure of 4 things - fork diameter, fork spacing, fork offset and handlebar clearance. brake hose bracket, mk3. The only thing is that even though I've pulled the stanchions up as tightly as possible into the upper yoke (triple tree) with the proper tool, there is a 3/16 inch gap between the top of the headlamp brackets and the underside of the top yoke where you'd expect them to Does anyone know from this board if top triple clamp from Z1000 03-06 or 07-09 fits on 06-07 ZX10 forks? (if offset and spacings are the same) Research for the naked project i startedThanks . Standard offset with pressed shaft tubeTechnical factory look, full CNC lines. Reduced offset is less common for 27. Trust me, I learned the lesson re: the fork-dropping Sent from my iPhone using Tapatalk . FastenersClearingHouse. 5” models using reduced 37mm offset forks (27. In simplest terms, a shorter fork offset increases the trail measurement of the fork. Comes standard in beautiful brushed machined finish. Fork yoke offset of the GSXR yokes is exactly the same as the SV, so the steering geometry isn't altered. Save Share Reply Quote Like. looks like the yokes took a pretty good hit in the past, and both are bent. Could someone please tell me the offset (distance from stem hole center to line connecting fork hole centers) and the fork spacing? Many thanks in Mic the diameter of the fork tubes at both yokes, but other forks from 2004 to 2009 will fit, depending on whether you currently have the standard forks or Ohlins . Earlier posts state the 850 kicked out the rake by one degree, and the yoke offset kicked the fork angle back by one degree (edit Fork offset for road bikes usually ranges from 40 to 55 mm, generating trail figures from 50 to 63 mm. I have built a MK3 fork yoke on a 1971 frame what alters the angle. es2 two inch offset also i think the hole is smaller for the top mount nut on the featherbed one. new stanchions, old yokes. The 750 yokes ran the forks in line with the steering axis which remained 63 degrees. Sort by Oldest first Oldest first Newest first Most reactions. our price £95. Also, the reduced offset combined with the larger diameter fork tubes may require you to modify te steering stops a little bit, to avoid the tubes hitting the tank. see what others say. hey i've putting together a set of late 1960s triumph/BSA forks from a mixture of new and old parts for a track bike project. treyzx10r. Our NYC Norton lightweight alloy fork yokes are designed for Norton Commando, Featherbed, or Seeley-framed bikes - Street or Racing. 1) Less fork offset (20mm as opposed to 22mm) increases trail and, on paper, should make the bike steer slower and improve stability. Axles: The wheels are comparable fitment for all 01 98 Tbird tank/seat, Sprint fairing, ZX7R forks+Racetech Gold Valves, 08 ZX6R shock, short sw/arm, Alcon 6-pots, Ignitech+TPS, T'bike 3-1+Beowulf can, The overall stem length, to yoke top nut is perfect, bearing in mind that the top yoke sits lower & quite close above the frame headstock. The bottom diameters are also the same. For a 1mm decrease in fork offset: Trail Increases 1. Enjoy! Motorcycle setup and the effects of Rake, Trail, Fork Offset and Adjustable Triple Clamps. 2. A Fork in the Road. The new 750 yokes offset the forks forward by more than the earlier ones to clear the Interstate tank. That said, I've never measured the fork yoke dimensions, so I don't know the accuracy to which they are made Its all the rage to put on GRSX forks with 93mm trail instead of the stock 100mm. If you buy a different fork yoke for the bottom make sure the offset is the same as your top yoke, or buy both matching top and bottom yokes if needed. Skip to content. the second picture shows that the two What is motorcycle offset? The offset of the bike is the distance between the steering head and the centre line of the front forks. If the offset for only the triple tree/top yoke decreases, the trail decreases If the offset for bike’s bottom yoke/triple tree independently decreases, the trail increases Question 2. disc fork yoke -- is the offset from the tubes to the stem the same for all years or The yoke offset was changed (made about 1/2" greater) AND the yoke angle To familiarise with the concept, fork offset refers to the distance between an imaginary line, which traces through a fork’s crown, and the actual axle position. Endries: WI: Clevis Yoke Ends, Clevis Fork Joints etc. However, I believe the offset is reduced on a TBS to compensate for the head angle also made steeper by the raised rear end (longer shock than stock Tbird), and possibly 7" alloy billet top yoke 2 1/4 offset. The width is the same at 7 3/8" but the offset is substantially different. 2") shorter and would automatically mean a lower front end, so if you want to do that and not have glad you have your bike going ok. The MDS bottom yoke is different, central to the fork legs. The problem is nothing to do the yokes or the angle of the stem as they are the same. The problem is purely the fact that the R1 forks are 22mm shorter than the 5EB forks. I get a lot of questions on why people need different offset triple clamps than stock or why they should buy clamps from me and I guess the simple answer is you don't NEED them (Done! Shortest blog post ever, kidding) but you might want them. Glad I came across this thread. Not sure about the 125 (beyond them being non-adjustable) but for reference the MKII Showa off the 250 are 53mm lower, 50mm upper, 41mm stanchion, yokes are 205mm spacing & 35mm offset. Trail is the distance between the contact patch of the tire — where the tire touches the ground — and the steering axis. the first three pictures show that the bottom yoke holds the new stanchion out of line with the upper yoke. If making a new top triple, keep in mind that a flat triple will pull the forks a bit up, compared to the stock XS top triple. 2000 SV650's come with 25' rake. Nasher Thread Starter Elite Member. Pinchbolt top allows raising or lowering ride height. Steel 7" alloy billet top yoke 2 1/4 offset. Fork offset, combined with head angle, affects something called ‘trail’, and ultimately whether it’s a dog or a whippet on cdertain descents, thus explains bike fettler extraordinaire Chris Porter from Mojo. 3693-mfc-f-2803 3/8 offset forged zinc yoke: 375: Contact_Supplier. It will replace a GSX-R750 piece. This is a little less expensive but the offset is now determined by the R1 lower yoke. The offset is as standard 30mm replicating that of the GSF1200. The frame dictates the forks angle and the stem is at 90 degrees to the yoke and thats fixed and cannot be adjusted. The sizes for this Suzuki GSF12 Yes, the yoke offset is different on a TBS, a bit smaller iirc. More fork offset is like steepening a HA, or shrinking the wheel size, in terms of steering feel. I have done similar fork swaps and can adapt the Triumph wheel, brake and headlight brackets so it won't look too out of place Hi, I've just fitted some new shuttle valve fork stanchions to my 1968 T120 (plus new bushes etc). 8 stainless steel bolts. com, The FCH Network, your source for Clevis Yoke End Fork Joint, DIN 71752. Naturally, there will be more trail on 29ers than See more Triple trees/aftermarket yokes – These products will recalibrate the offset to then adjust the trail without impacting the rake; Rear suspension – Lowering the rear suspension will increase the trail and rake; Front forks – First, when the forks are fully compressed, the front tire will contact the radiator and oil cooler cover a little. Can any of you lovely people on here confirm the dimensions of a 'new' Supersport top yoke? Offset? Fork Diameter? Distance between Fork centres? Ones with the bolt down clip-ons. 7" alloy top yokes, lm24tf manx style featherbed 2 1/4" offset. Services (current) Locate Fasteners SourceFinder™ RFQ Scrubber Technology Membership Options FCH Close-Outs. e. 25" offset. Fork offset counteracts the effects of slack HA and larger wheel size on steering. I don't know about the TA, but the TE also had an offset bottom yoke, which is of course not easy to change around, as it is bronze welded to the fork legs. You get that from having Fork offset counteracts the effects of slack HA and larger wheel size on steering. With a bigger wheel size, there is more trail, since the axle is higher, creating more distance between the contact patch and steering axis. Another thing which has evolved to make bikes work better on even more parts of your ride. 5” bikes traditionally use 44-46mm offset forks). FireBlade forks are (approx. 5” bikes (for now) but some brands like Transition and Yeti are offering 27. Yet, for some reason (perhaps the wide number of factors amount of fork offset you want to use. More sharing options BiKenG. part no The front rim on my 1963 frame is offset to the right, I only noticed it recently after some years wondering why the bike didn't steer as perfectly as I expected. Offset of this top clamp is 37mm thats OEM Top Yoke for the GS750 front fork conversion to Bandit 1200 MK1 forks (43mm), this top yoke has been manufactured as a replacement for the standard GSF top yoke and designed for the GS clocks to fit directly to the top yoke. The diagram below shows the offset distance of the front wheel geometry. 51mm offset forks: My experience. 57mm of trail is considered by many to be an ideal combination of stability and agility. ) Tree offset & unweighting forks when using rear stand There was just an issue where the offset on the replacement yoke was a few mm out (that only became apparent whilst fitting) and that had to be re-machined, hence the delay in completing. Leg diameters at top and bottom yoke clamp areas. Every ST ever built (2, 3, 3s, 4, 4s) all had the same bottom yoke, therefore they all have the same offset and same fork spacing even if the top yokes are different. You need to indicate the fork/yoke offset in each and also what trail would you get when fitted to a VFR800 as the different lengths of forks would affect the rake and hence the trail for any fork offset. It is often set and governed by the fork triple clamp that mounts the forks a set distance away from the steering axis. Hi all I have a srad 750 and fitting k7/8 1000 forks at moment I have got a k8 bottom yoke fitted OK. It does so by way of increasing the distance between the tire’s traction patch on the ground and the point where the steering axis Fork offset is the distance between the front axle and the steering axis of the fork. By accurately measuring and adjusting the fork offset, you can fine-tune your bike’s steering response and ensure precise cornering and control. I can’t recall the exact fork offset but IIRC the offset of the top yoke is the same in 750 and 850 yokes, it’s only the bottom at differed on the 850s ‘offset yokes’ as it kicks the fork angle back in. BiKenG. Straight blade forks can The yokes up to 1971 have the same offset as 650ss & Atlas models at 2. i think the featherbed top yoke is two and a quarter inch offset. The GSXR forks are about 5mm shorter but you can over come this by having them set flush with the top yokes, as the std SV forks as 5mm proud of the top yoke as it comes from the factory. With the 750mm r1 forks + 2004 onwards 30mm offset 15mm shorter fork length with only 120mm travell, 43mm forks and radial Hi - I'm having a machinist fab me a custom top yoke. Which normally increases front wheel trail - slightly slowing steering, but increasing straight line stability. bottom fork yoke shrouds epoxy painted black 58-68 5 3/8" long ___(pr) rejects. I've searched a bit, but came up empty. 00 excl. I fitted a TLS brake c/w hub some years ago from Norvil (works well). our price £44. Dropping the front (or conversely raising the rear) will steepen the forks reducing the rake (steering head angle) and decrease the trail, so that could be used to (partially) compensate for the decreased yoke offset. part no: 080003. When installing the forks, instead of using the OEM fork height of 39mm from the top of the upper yoke just use 29mm (I'm using 30mm). On the image above it is the distance measured between the two parallel black lines that run from the centre of the forks and the centre of the steering head pivot. steering stem and stanchions ran parallel. The cheapest solution - and the one I chose - is to use both R1 yokes with the Fazer Advantages:Lightweight!Greater rigidity. Not to be confused with the curvature of the fork blades, which some people think of as “rake”. 250" Wil explains in this two-part online feature about fork offset Unless you’ve been living under a rock for the past two years, you’ll have noticed that fork offset has been a particularly The reason the 850 yokes were raked was to keep the wheelbase the same. First slow running in test rides up to 65 miles has not shown any strange behaviour. Alternatively, you can pair a custom top yoke with an R1 bottom yoke to lower the forks. There is still plenty of fork there to clamp your clipons too, you just need to remove the circlip at the very top of the forks. One of the reasons why a Commando is less agile than a featherbed framed bike. RME Yokes (Adjustable Triple Clamps) can be made to fit any diameter of forks and any other special build dimensions. part no: 27980. This was not uncommon on 748-999's that were set up correctly too. part no: 19307br. I solved the radiator issue by making an offset lower Fork offset, which refers to the distance between the steering axis and the fork’s blades, directly affects handling and stability. (It can do this because the adjuster nut, below You say the R6 forks are 15 mm shorter than the XS forks. Thanks #1 Nasher, Mar 17, 2022. The diagram In this chapter of 'To the Point,' Pinkbike attempts to clarify why fork offset what is fork offset? In this guide, we are going to be deciphering fork offset, defining associated key terms, and helping you to understand the ride difference various offsets may have. Modern and Elegant design. The yoke kit consists of top and bottom yoke, Stem with nut, lock stops, steering damper bracket and machined 8. Harley FXR with Showa Fork 1988-2003 (except Sport Edition, Convertible, FXRT & 1992-2000 Hugger) 39 mm Harley FXRS Sport Edition, FXRS Convertible & FXRT with Showa forks 1987-93 39 mm Harley FXWG 1980-83 41 mm Harley FXWG & Dyna Wide Glide 1984-99 41 mm Harley FXDWG 2000-05 41 mm Fork offset is the measured distance from the steering axis to the mounting point of the front wheel. Link to comment Share on other sites. The offset of a motorcycle is controlled using various shapes of the triple tree, the piece that clamps the fork tubes and attaches the whole front end to the frame. Hence, if you simply turn the top crown plate around, the bearings will indeed be mis-aligned. vat. To change the offset you’d need to physically In addition to a TÜV certificate, our fork yoke module system also includes a technical report on the stability test of a series of fork bridges for motorcycles. Offset, i. Made from 6061-T6 Aluminum, Hard Black Anodized. Hope that helps Hi, can anyone tell me what the fork offset is on a big fin Goldstar. The yoke offset is close enough not to be a problem. The "mechanical trail" is the main figure that's being modified by this fork offset choice. About 8 years ago I fitted a set of Kawasaki Gpz750 forks to a spare A10 frame. 5° offset or run out similar to Sherpa yokes but place the handlebar mountings over the steering stem instead of behind it which gives more room on the bike. mirror polished. Featherbed yokes have 2 1/4" offset and commando yokes have 2 13/16" offset. In this video, we clear the confusion and take an in-depth look at what fork offset is and how it will affect your ride. Subscriber. The offset (fork plane to stem) is tricky to measure, but it will be either 25, 30, 35 or 40 mm and my money would be on it being one of the middle 2. On my CB32 frame used a Marzocchi yoke from a Penton and offset was about 30mm if I recall. But the original srad top yoke won't fit. It has stops and an offset (45mm) replicating that of the GS750 we can however, manufac Personally I've found no problem using forks that are 10mm shorter. A bike feels great when descending if it has steering that is stable at high speeds and when in the turns. Yoke offset was the same as stock and by sliding the tubes up through the top yoke enough to put on a set of clip-on bars the length is pretty close as well. 04/05 600/750 has 30mm offset, 54mm bottom fork dia, and 25mm stem 06+ 600/750 has a 30mm offset, 53mm bottom fork dia, and 28mm stem Note that 06+600/750 forks are 53mm at the bottom clamp diameter - the others above are 54mm; so consider that as you wish to mix/match bottom triples & forks. Supplied with tapered roller bearings, alloy dust seal, drilled alloy top center nut, washers & all Thank you for your enquiry, without getting the drawings out and checking them from memory I think the early Commando and featherbeds had an offset of 2 1/4" the yokes changed to stem fixed in top yoke, approx 1970 and the offset increased to 2 5/8" these yokes had parallel bores, i. (The total weight of the motorcycle may not exceed 500 kg. 12524 posts Fork/yoke offset, fork leg spacing, brakes, wheels, trail, rake, tyres, stering stops To be more specific in answering your question I have been using CBR600F3, NSR250 SP ( MC28 ), upgraded Hawk and Bros frontends, a mix of CBR600F3/CBR400RR NC23/CBR1000RR/CBR600F2 parts together with some aftermarket parts to build a nice Adjusting the offset of the yokes offers changes to trail, feel, turning and stability. 1mm; Wheelbase So I have this 95 Honda VRF 750 Interceptor fork assembly leaning against the shop wallForks are the same extended length and about the same width as the Triumph. More trail is nice at high speeds (motorcycles usually have 80 mm of trail) but can feel sluggish at slower speeds. Separate subject rear wheel hub: trick thing is to use a KTM conical magnesium rear wheel hub (eight hole Stark Varg Dirt Bike Mods! My new stark varg is a piece of art, we just added suspension coatings, tunning, and works Brembo brakes to start, waiting on the new A60 Rims and titanium bolt kit to complete this already amazing bike! after 40 year of motocross riding this bike is a game changer especially wi th adding a dual hand and foot rear brake set up! Alternatively it is the distance from the steering stem to the fork centre line. Also have seen Betor yokes and forks on the pre-unit swingarm frames. A journey across Georgia exploring the fertile and diverse landscape of So I've placed a 10mm step down on the top tree and the added 20mm fork length through the yoke and clip on the std TRX forks/yoke gets me to the same distance with the 98/01 R1 forks sitting level on the billett trees. 30mm Triple Clamp Offset 53mm Fork Upper Diameter 53mm Fork Lower Diameter 40mm Caliper Mount Spacing 320mm Rotor Diameter 10mm Rotor Offset 25mm (Years?) Superbike Forks (1999+748/916)/996/998 (Showa fully adjustable, accomodate upper/lower diameter ) ? mm Fork Length frame geometry/handling - castor and trail is altered, from the yoke offset as well as the fork dimensions Side stand - may need lengthening Matching wheels - can you get a matching rear in the swingarm? , rear sprocket offset ect Then making the ignition lock, instrument mountings, fairing etc all fit together, quite a lot of work involved. . distance from plane of fork leg centres to steering stem. Many trail and enduro bikes are now designed around reduced 42-44mm offset forks. Technical anosidation red or BlackPrecise alignment of the fork tubeS3 PROTECH Handlebar Protector includesThe Set includes:Bottom yoke, central axle, top yoke, lock nut, central nut, handlebar clamps *bolts included100% CNC Yoke set design for the GS750 front fork conversion to Bandit 1200 MK1 forks (43mm), this Yoke set have been manufactured as a replacement for the standard yoke set and designed for the GS clocks to fit directly on to the top yoke. Last edited: Mar 18, 2022. One thing to accommodate if making fork tubes closer to the stem [as about universal on race bikes] is forks BMW R nineT R9T CNC Top Triple Tree Yoke Clamp 55mm forks. TEN THINGS YOU NEED TO KNOW ABOUT TRIPLE CLAMP OFFSET - Motocross Action Magazine 44mm vs.
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