Any Honda Dominator NX650 owners out there ?

[McVick]

Originally Posted by switch

Sounds like bad filtering/voltage stabilisation. If those LEDs are designed for 12V, they will flicker like hell with the engine under load. What you need is filtration/regulation mecanism for the LEDs.

Thanks.
Do you know of an example of such a Filtration/regulation mechanism?

The lights are 12v designed for vehicle/moto use. I've had them, same lights but not exact same units, on a Jeep and on a DR650 direct wired with no issues.

Thanks allot for the help on this!

[Play it Loud]

Evening Gents,

Friend and I finished building an 1991 XR - 1996 dominator hybrid, making what we think is a practical rally bike , for photos use the following link http://enrapturephoto.com/gallery/off-road-fun/pages/1/

Bike was running great so we thought we would experiment with using the XR carb and fitted it last night after a thorough clean.

Bike runs fine up to 3,000 revs then bogs on the XR carb Before we start messing around with jets and needles has anybody fitted an XR carb to a dominator and gone through this process?

Cheers

[Pablo83]

Originally Posted by Play it Loud

Evening Gents,

Friend and I finished building an 1991 XR - 1996 dominator hybrid, making what we think is a practical rally bike , for photos use the following link http://enrapturephoto.com/gallery/off-road-fun/pages/1/

Bike was running great so we thought we would experiment with using the XR carb and fitted it last night after a thorough clean.

Bike runs fine up to 3,000 revs then bogs on the XR carb Before we start messing around with jets and needles has anybody fitted an XR carb to a dominator and gone through this process?

Cheers

I assume you're talking about an XR600R carb, not the XR650L carb (which is identicle to the NX650 carb)?

That XR600R carb is a non-pumper, slide-carb, right?

[Pablo83]

Originally Posted by switch

Sounds like bad filtering/voltage stabilisation. If those LEDs are designed for 12V, they will flicker like hell with the engine under load. What you need is filtration/regulation mecanism for the LEDs.

can't you fit an appropriate sized capacitor to the line to help stabilize the voltage?

Also, you should check the voltage when the bike is running vs voltage from just the battery. It's possible the regulator is going bad.

[Play it Loud]

Pablo, correct the carb is from an XR600 and yes its a slide carb.

[Pablo83]

Originally Posted by Play it Loud

Pablo, correct the carb is from an XR600 and yes its a slide carb.

I can't imagine what about that carb would prevent the engine from exceeding 3000 rpm unless you're whacking it open too quickly.

I guess a massively undersized (or clogged) main jet could cause that. If the choke is stuck open, maybe that could cause it too.

[Play it Loud]

Pablo, carb was thoroughly cleaned and full functioning before being put in bike.

I'll let you know he results of tweaking carb over the weekend.

[gman79au]

Originally Posted by Play it Loud

Pablo, carb was thoroughly cleaned and full functioning before being put in bike.

I'll let you know he results of tweaking carb over the weekend.

make sure your valve clearances are correct and ign system isn't failing at the 3000rpm mark, a timing light with a HT lead pick up can show this while running the bike

[HeadTrauma]

Originally Posted by Play it Loud

Bike runs fine up to 3,000 revs then bogs on the XR carb Before we start messing around with jets and needles has anybody fitted an XR carb to a dominator and gone through this process?

Cheers

I haven't, but letting us know what jets and needle position are being used will give clues as to whether your problem is in the carb or elsewhere.

Originally Posted by pablo83

That XR600R carb is a non-pumper, slide-carb, right?

Yup, just a big, simple round-slide carb with choke butterfly instead of an enricher valve.

[Pablo83]

Originally Posted by Play it Loud

Friend and I finished building an 1991 XR - 1996 dominator hybrid...

That's a great looking bike, BTW. I'd love to hear more about it. My guess is you're running the XRR forks. What about the rear?

[Play it Loud]

Were at the same offroad site again next Tuesday, so I will take more detailed photos.

The bike uses all the XR600R running gear, frame, seat, acerbis tank, plastics etc. the Dominator motor, front fairing, loom, front mudguard, carb. Custom battery box under rear mudguard

So what do you get if cross and XR600R, Dominator, Hearse and an H&K MP5 ............... you get an XRinator!

The original XR was swapped for a hearse bought for £100, the dominator was also purchased for £100, the Acerbis tank was swapped for a H&K MP5 (repilca) . Bar that it was a pretty straight forward build.

[jj5]

Sounds good. Got any building pictures?

[Pablo83]

General information on worldwide model year changes to the NX650

Originally posted by Switch on www.xrv.org.uk

CHARACTERISTICS OF EACH "GENERATION" (specifications similar to previous years, unless specifically mentioned as a change):

1. 1st generation / version 1 (also made for US) - 1988

RD02 designation
type 1 fairing + seat
turn signals external from fairings
golden rims
square-base end cans with golden caps
long carb 'neck' (intake manifold)
13L fuel tank
Nissin front (disk) brakes
drum rear brakes
front sprocket countershaft with 7 teeth
kick-starter
'short' pro-link rear shock
rectifier mounter on the back of the airbox
fuse box with 3 fuses + 1 or 2 diodes (unsure where they switched over - perhaps the one with a single diode doesn't have a sidestand cutoff switch?)

2. 1st generation / version 2 (european) - 1988 -> 1989

disk rear brakes (Nissin)

3. 1st generation / version 3 - 1990 - 1991

removed kickstarter (can still be added with some work)
front sprocket countershaft with 14 teeth

4. 2nd generation / version 1 - 1992 -> 1994

type 2 fairing + seat
removed possibility of adding kickstarter (modified engine block)
turn signals integrated into front fairings
turn relay now has 3 terminals (extra terminal connected to ground)
16L fuel tank w/3 mount points for each front fairing
fuse box with 4 fuses and no diodes

5. 2nd generation / version 2 - 1995

RD08 designation (VIN starting with ZDCRD08...)
front right footpeg mounting changed
round end-cans with silver caps
short intake manifold
"long" pro-link rear shock (actually frame mount 1 inch higher)
redesigned airbox (same air filter though)
repositioned rectifier from rear of airbox to under the luggage rack (also longer wires on rectifier)

6. 3rd generation / version 1 - 1996 - 1997(some)

type 3 fairing (seat compatible with type 2)
silver rims
turn signals external from fairings
16L fuel tank w/2 mount points for each front fairing and slightly offset bottom mounts

7. 3rd generation / version 2 - 1997 -> 2003

Brembo brakes



EXTRA THINGS THAT WERE CHANGED:

ALL YEARS: seat height - the claimed seat height varies wildly between 82cm and 89cm; I don't have exact info
ALL YEARS: Honda tuned the carb settings a LOT, based on year and country of export; main jets vary from 140 to 160 (all valid stock sizes). Idle jet is 50-55 all the time, I believe. Air screw settings are a mess.
LATE YEARS: Honda apparently messed with the camshaft or valvetrain; the is a POSSIBILITY that newer than 1997 bikes need 0.10mm of exhaust valve lash instead of the 'standard' 0.12mm; this is UNCONFIRMED
LATE YEARS: somewhere along the way, the crank sensor was changed from single-pickup single-sensor to a multi-pickup single sensor setup; result is that new and old ignitions don't quite match; bike might run but will show wrong RPM; use at your own risk or ask beforehand
EARLY YEARS: it's unclear to me what Honda did to the rear shock mount on early models; I've seen three frames (91, 90, 96) that have different rear shock mount height, measured directly against the lower lip of the headstock



Things NOT related solely to production year:
parking lock (locked handlebar with position lights on) -- this is specific to Austria, I believe
smog pump (externally mounted on the left side of the cylinder) -- no idea on specifics here - US California has it, but also some EU bikes
luggage racks
speedometer markings (km/h, mph) -- related to US/UK models, likely
front headlight protector -- must've been an optional for 1st generation models, either OEM or aftermaket
sidestand switch, either as a simple warning light or as an engine cutoff (1st generation only, but unsure of years/coutnry - later models include the full package: warning light + engine cutoff)

[jj5]

great list.

Never occurred to me the 1990+ had bigger tanks i thought it was a mistake in spec list of various websites :P oh well in return i have a kickstart

[Play it Loud]

Put the Dominator carb back on for now until the new jet and needle arrive for the XR carb.

Unfortunately i have not got to drop the engine out again as shortly after these photos Phil flipped it and bent the gear selector shaft