speedo drive

[Monkey_SDMF]

Hi guys

Would i be right in thinking that all SV's have a speedo drive on the front wheel? I know the curvys do, but I'm suprised that the FI's Pointys do too. I thought they would take the drive off the gearbox in some way.

If the speedo drive is on the front wheel it's great news as I want to raise the gearing on my Ponity to lower the RPM on the long motorway journeys I do.

Any info is greatly appreciated.

Thanks

Adrian

[Ceri JC]

FI models do indeed have it on the front wheel. It's on the axle on the left hand side just inside the fork leg. It's the bit the cable next to the brake line leads to. It drives speed displayed on the clocks and the mileometer.

[yorkie_chris]

All SV's have the drive on the front wheel. And they all break if not put back carefully.

[Ceri JC]

All SV's have the drive on the front wheel. And they all shatter in situ, and then fallout like the pieces of a jigsaw puzzle whenever you have the front wheel out, no matter how carefully you treat it. ;)

[Monkey_SDMF]

thanks guys. Always helpful as usual.

[breakz187]

Can hitting a speed bump damage these badly designed things? Im pretty sure that what nkocked mine out on thursday of last week.

[petevtwin650]

Can hitting a speed bump damage these badly designed things? Im pretty sure that what nkocked mine out on thursday of last week.

Not unless the axle wasn't tightened correctly, and possibly not even then. IMO.

Might have been previously broken on re-installing the wheel and hanging on by the proverbial thread.

[breakz187]

It has been replaced before, but its was done about 5k miles ago.

Seems to be a bunch of people reporting this issue on the forum as of late.

[petevtwin650]

I have broken one only once and I and tyre fitters have had the front off loads of time. Maybe the plastic gets more brittle with age.

[Ceri JC]

I have broken one only once and I and tyre fitters have had the front off loads of time. Maybe the plastic gets more brittle with age.

Is it actually plastic then? Mine was really brittle and felt a bit odd, almost like ceramics. I was only half joking when I likened it to 'fine china' in the other thread.

[petevtwin650]

Is it actually plastic then? Mine was really brittle and felt a bit odd, almost like ceramics. I was only half joking when I likened it to 'fine china' in the other thread.

Just my take on the material Ceri JC. Can't imagine it's anything too exotic.

[Dangerous Dave]

Over 100,000 miles on the same speedo unit, never let me down once.

[petevtwin650]

Over 100,000 miles on the same speedo unit, never let me down once.

That's it DD, once you are aware of how to replace it correctly it's a reliable set-up and much better than a gearbox take off, cos it does allow for gearing changes without making mental calculations every time you look at the speedo.

[stevo_sv]

mine has gone brittle and during the process of having the wheel off about 5times recently, 1 of the locating bits has snapped off.
since disturbing it the first time it now lets off a high pitch whine at low speed, very annoying.
checked it out 3 times now, seems to be rubbing inside so now needs replacing.
ebay it is

[Ceri JC]

As an aside, I just spoke to the parts dept. at my garage and the chap said he'd never had to order one before and was surprised when I said I'd heard of other people having this problem.

[Dangerous Dave]

As an aside, I just spoke to the parts dept. at my garage and the chap said he'd never had to order one before and was surprised when I said I'd heard of other people having this problem.
It isn't a problem with the part, it is a problem with ham fisted numpty mechanics.

[Ceri JC]

It isn't a problem with the part, it is a problem with ham fisted numpty mechanics.

Any particular trick to putting them back, other than making sure the teeth of the rotor fit properly into the relevant hole of the front wheel and that the axle is torqued up correctly?

[Dangerous Dave]

making sure the teeth of the rotor fit properly into the relevant hole of the front wheel and that the axle is torqued up correctly?
Thats it; allignment, fitment, and correct torque is the thing some dealer mechancis have problems with.

[petevtwin650]

Trick is I think is to have the"slidey" spacer nearly out of the right fork, locate the drive correctly and then slide the wheel over. Worked for me.

[Sid Squid]

It isn't a problem with the part, it is a problem with ham fisted numpty mechanics.
True, if a little extreme ;).