Yeah but it uses a different head stock bearing set so then I'm either looking at finding a set of bearings that will work or swapping the stem..
Just so it's out there the bearing dimensions for the XS-400 and most of the RD's plus the RZ-350 are
Tapered Roller Bearings(STEERING) Upper = 25 x 48 x 13mm Lower = 30 x 48 x 13mm PARTS PLUS part # SSY125
Just because the steering bearings are the same for 1 model and another model doesnt mean it will fit.Some models use a longer steering stem than others and this wont be reflected in the bearing kits. Just because the bearings are differnt sizes, doesn't mean they can't be made to fit also.
The steering bearings are sized like this (XS 400 top bearing used for an example) = 25(inner hole dia/stem dia) X 48(outer dia/frame hole) X 13(bearing height). Your post list the XS 400 bearings, here are the XS 650 bearings = 25 X 48 X 15.2 and 30 X 48 X 15 (SSY500).
If the steering stems are the same length (I beleive they are, but you need to check to be sure), you would use the XS 400 bearing kit to install the XS 650 steering stem into the 400 frame. The stem diameter is the same for the 400 and 650(as shown in the 1st measurements in the bearing sizes), the difference is the outer sizes of the bearings and bearing heights and the size of the mounts in the frame.
The XS 650 stem length is 225mm (the later 35mm forks - top of stem to bottom of bottom bearing). I don't have a later frame to measure.
The top triple tree is 23mm thick at the stem and there are 2 X 7mm locknuts between the bearing and the top triple tree. If you subtract the top tree and nuts thickness (total 37mm) from the overall length of the stem ,it gives you 188mm between the top of the top bearing and the bottom of the bottom bearing. Measure your stuff(stem,top clamp thickness and locknuts) and compare it to this info.(or put your 400 stem, locknuts, and top tree together and measure the distance between, bare, with out any bearings on it)
I tried to measure the early (1976) 34mm XS 650 stem and the measurements seem to be about 5mm longer (230 instead of 225) than the later 35mm measurements. It was hard to get an accurate measurement because the bike is together and not easy to get to, so it may actually be the same size as the later forks.
You can shorten steering head on XS650 to get clearance.
Don't remember on 400 as I haven't done one for about 25 yrs
XS650 steering head is 190mm long stock, just used a tape measure on spare frame (1979 frame)
Yamaha use the same bearings on XS models over 250cc, RD DT, YZ etc for a least a 10 yr period and from what I've seen, still use same sizes today on smaller cruiser style bikes.
The taper bearings are taller than stock in every case and for every manufacturer(Honda, Suzuki,Kawasaki, Yamaha)
It only makes a difference if your running stock headlight 'ears' you need a 4~6mm spacer on fork tubes to stop them flopping about
Ball bearing just have a lower stack height.
(I've been fitting 41mm Suzuki Katana forks into XS frames)
GS500 has 37mm tubes, max dia for vintage I believe?
BTW, Hello everyone, I'm new here
Hey all, new here. Just got myself a 72’ Honda CB100 with a CL100 engine swap. Im replacing the lighting and fenders, but I’m running into an issue with finding compatible lights. Everything that I’ve found that is low profile runs on 12v, but the bikes battery is only 6v. Haven’t done a TON of...
Hello all............recently put a new battery in my 69 cb175. Battery died after a week or so. I only rode it for a total of an hour within that time. It usually takes 6 cranks with starter to get her going so i imagine that's draining the battery significantly. I also have an H4 type bulb...
Is anyone running an older DR650 as a stripped down trail bike or desert sled?
I am currently working on one, and trying to find a good exhaust, tire and seat setup. Open to input and suggestions.
In general, will mounting tires sized (110/90 -18F) and (120/90 – 18R) make a difference one way or another if a bike has tire/rim sizes to accept (100/90 -18 F) and (110/90 – 18 R) stock by the manufacturer? No clearance issues being a prerequisite.
Working on a bike that has a sorted history. Don't know any more about the motor other than it is a '83 or '84 CB or CM 450. Trying to figure out if we need a CDI when rewiring with a Motogadget M Unit?
Would appreciate help as we try to determine a wiring diagram.