Dr650 speed wobble at 110km/h

**johannvr** · 15th July 2009, 20:06

sounds like you've got a good 'un - hang on to it aye ...

**avgas** · 15th July 2009, 20:11

i found that most bikes hit a harmonic wobble at about 150kph when they have a big bloody mudguard - remove that and it seems to be fine.

**junkmanjoe** · 15th July 2009, 20:11

i just try not to crash as much as others....

**warewolf** · 15th July 2009, 21:54

Originally Posted by junkmanjoe

hey any other DR riders out there notice that the factory speedo runs at 10km slower than what its reading...

Most bikes over-read by 5-10%, it's nothing peculiar to DRs or your specific bike.

**junkmanjoe** · 15th July 2009, 21:56

okies, just wanted to put tit out there...sweet.

**warewolf** · 15th July 2009, 22:03

There's a few threads on here about it, IIRC.

PITA if you ask me, I'd rather they were only a couple of % out. My car is appalling, at an indicated 65km/h the roadside radar display says 47km/h !! No wonder I get tailgated at an indicated 50.

btw I had the speed wobble with an old (hard) part-worn TR8 front and well worn MT90 A/T rear. That was with lowering links, forks pulled through, and probably poor suspension clicker settings. Seemed to go away with chunkier tyres and some suspension fettling, despite notched steering head bearings. Haven't noticed it at all with the lowering links removed and forks pushed back flat with the clamps.

**junkmanjoe** · 15th July 2009, 22:10

onsitly i have to say ive never had the speed wobbles on my dr.
and i have pushed it to 160 on the clock,, but was only realy doing 150km..
and thats fast enough on this bike.
i have pushed my road bkes up to the 180-90 mark...scary..
pushed my Rx7 up to 200kms one night on foxton strights...and that didnt get the wobbles.....not that i wanted them...
young and silly back then,,, now old and slow....

**merv** · 15th July 2009, 22:14

We're still running our DR on OEM road/trail tyres with it lowered and its never had any wobble problems. With it lowered at the back and I thought a similar amount at the front the only thing I find with it is it really understeers (squealing the front tyre) on the road as if it has far too much trail as the forks are kicked out at quite an angle compared to our other trail bikes. I've seen 152km/hr on my GPS on gravel on this bike with no stability problems at all (on closed roads under controlled conditions of course

).

I'd say its your tyres - have they been put on absolutely true for a start? Usually knobblies on the road are fine provided they are put on nice and straight with the beads all even.

**junkmanjoe** · 15th July 2009, 22:17

thats a point i get my wheels balanced, with new tires..

**Monstaman** · 15th July 2009, 22:48

Yeah my wheel are nice and true, balanced and fitted nicely, reduced the rear preload to match the front so it has bought teh back down by 14mm.

Will head out tomorrow for another skid, I will let the tyres down a smige on the way back to see how it changes the handling.

**junkmanjoe** · 15th July 2009, 22:56

hey did ya feel the shake mate....rattle and roll aye

**Monstaman** · 16th July 2009, 08:04

Originally Posted by junkmanjoe

hey did ya feel the shake mate....rattle and roll aye

Dude it rocked the house, checked on all the girls but none fell over thankfully.

Few cracks have form but noting to bad, it went one for about 1 1/2 - 2 minutes, probably the longest quake I have ever felt.

**junkmanjoe** · 16th July 2009, 09:53

fuk i miss all the good stuff...
5km deep shallow mate...be on ya door step next time..
its a coming...

**Monstaman** · 16th July 2009, 10:31

Our biggie which we are statistically 280 years overdue they are saying at least mag 9.2/3/4 ish which is very destructive.

The area between Haast and Murchison has not moved in a long time, at the Geonet conference they held here in Wanaka they said we can expect a 4 meter split in height and a 40 meter shift horizontal

Think that will wreck our home and prolly knock Suzy over too.