converting single brake disc 600s to a dual disc.

[malcky]

Hi folks,

might see about converting my single disc bike to a dual disc and wanted to know if all the parts i need are all i would need to do it:

1) wheel from a dual disc xj600 (would a 900 work for this?)
2) pair of calipers (again would a pair from a 900 work?)
3) new hoses, would get a stainless set.
4) pair of discs

have i missed anything?

reckon 1st 3 items above would would be about £150ish total then about £250 for new discs.

Is this a worthwhile mod and has anyone else done this?

cheers.
Malcky

[General Gman]

you'll be needing a master cylinder too.would imagine the single disc one is different.
Now I have a pair of FZR1000 calipers hanging around in my shed.... they have the same mounting centres as just about all other yamahas.... I've fitted a pair of R1 gold spot calipers to the FZR...

[rollingwreck]

You'll also need a pair of fork legs so as to have caliper mounting points each side. You'd be better off trying to source a complete front end of a late model 600 Divvy from a breakers.

[General Gman]

ah yes. forgot about that.well spotted.

[billywhizz]

A few people have asked about this, but I can't remember anyone actually doing the swop.
and why anyway.
most people who had the single disc, where always happy that the braking force was OK. I can't comment unfortunately as I had the twin disc model only.

[rollingwreck]

Don't quote me (maybe another club member can verify this) but didn't the twin disc Divvy have 41mm forks whereas the single disc model only had 38mm ??

Just wondering, because if that is true, you 'might' also have to consider replacing your top and bottom yokes to accommodate the wider fork legs.

Anyone else agree?

[iooi]

Calipers Here Even says breaking the whole 1990 bike so might have the rest of the front end.
Remember that they are single pot calipers and on the single disk they are twin pots.

[harrier]

What sort of pads have you got up front ?

Have you got sinterd ones fitted, i am told that they give a huge increase in braking efficency.

Just a thought from a newbie, what do the more informed people think ?

lee

[cineman]

What is it with Yamaha, their brakes are always pants?

[beeblemaster]

most people who had the single disc, where always happy that the braking force was OK. I can't comment unfortunately as I had the twin disc model only.

I never had any complaints from my single disc, I thought it was fine. Perhaps it would be better if someone like Adbru commented on here who have had an early 6 and a later one.

If you think the brakes aren't that good then invest in a CX. ;D

[m40man]

They do seem prone to sticking / seizing. But they stop well enough. HH pads on the front help - like it helps all types of bikes ;-)

(I find they just sharpen them up a bit - worthwhile but not a massive difference.)

[adbru]

Perhaps it would be better if someone like Adbru commented on here who have had an early 6 and a later one.

Easy seeing its April Fools day when someone asks me for advice !!! ;D

I never found the limits of the single disk (ie I never locked the wheel) but the twin disk does feel a bit sharper.

Not a lot of help but then I am not a "spirited" rider ......

Although since getting the Silver one my normal average cruising speed has increased by 10-15mph on most roads

Try a twin disk bike and see what you think ??

Adbru

[alpaholic]

I've ridden both twin and single disc Divvy 6's and I certainly wouldn't bother to swap the front ends round. You can easily lock the front/stoppie on the single disc - how much more power do you need?

Easy job to do though - just get the front end & master cylinder off a newer divvy. Won't be cheap though since the front end is what gets smashed in many crashes!

You'll have to tell your insurance firm you've done the swap.

Also don't forget there are advantages to the single disc - access to the front wheel and calipers is better and you only need to spend 1/2 as much on pads yet I bet you don't wear them out twice as fast!

Good luck whatever you decide to do!

[HRHpenfold]

i have had both, a 1999 model with twin disks and my current 1995 single disk, the twin disk is a bit sharper, you dont feel that its underbraked, the single disk is acceptable with HH pads and a braided hose, but but to be honest, if i was going to spend £250 to improve the brakes, then i would put the money towards buying a Fazer 600, which has much better brakes than even the twin disk model(i suspect that the blue spot calipers may fit the twin disk model)and an extra 30bhp with less weight and wider tyres

[HRHpenfold]

iooi said:

Calipers Here Even says breaking the whole 1990 bike so might have the rest of the front end.
Remember that they are single pot calipers and on the single disk they are twin pots.

these are for the pre diversion bike and wont fit

[alpaholic]

fazerian said:

if i was going to spend £250 to improve the brakes, then i would put the money towards buying a Fazer 600, which has much better brakes an extra 30bhp with less weight and wider tyres

That's a pretty flawless point. Or at no extra cost a zzr600 which will very likely be cheaper than a divvy 600 these days.

[iooi]

Well as part of my easter treat to my bike, and in a effort to rid the front brake of a annoying rattle (solved by finding that a shim was missing from one end) i fitted some sintered pads, now i thought the front brake was good before... Well its a whole lot better now, so much so that i now keep locking the rear under breaking. Hell the back brake is so nice and progressive and its my style to use it more than the front. I just got to learn to squeeze the front even less now.

[malcky]

seems like too big a job for me, so i wont bother. I will probably get stainless steel hoses and new pads.

cheers folks.