What are they worth
 

Can anyone tell me how much a pair of forks from a 748, 1998 are worth. they are in very good condition.

I've seen them going for £125 although I sold a mate some for less than that, but it does depend on condition and if they are the nitride coated ones or not

Thanks for the quick reply.

I thought about £100 ish they are the normal Chrome versions.

Have you had any experience of fitting different wheel into ducati forks.

Why i ask is i plan to use a ducati front end on a Yamaha tzr special. but the original ducati front wheel is to wide. I really need to use a 3.00 / 3.25 so will nee to change bearings to fit ducati spindle or some how convert the tzr pinndle to fit the ducati forks.

any advice you can give would be appreciated

My mate that Had my forks put them into a Cagiva Mito frame using the Mito front wheel etc.
You can always bush both fork leg spindle holes down to 20mm and just put a spindle right through, or get one of the bushes threaded for the spindle to screw into, lots of ways to do these sort of things

Thanks Skidlids. you have been most helpful.
I think the bushes into the forks and use the original tzr spindle sounds a good idea. the idea of threading one bush for the spindle to screw into sounds perfect.


many thanks

One bush will have to have the 30mm outside diameter so may be the best one to thread if doing them out of alloy, but a few bikes alread have a threaded captive bush like ZXR750Js, TL1000S and a like. One of these may be suitable, I will check a couple of my other bikes when I have the chance, possibly this evening

Nice one
your a gent.

Springs on the Ducati forks might be a bit hard for a TZR

Could depend on the TZR special, last one we did had a DR650 motor in it

True :D

special
 

The motor would be a 350 ypvs

Mate Dougie at work has just put a YPVS engine in a Mito chassis, pics of it on the web somewhere he just had some Gibson pipes done for it about a week ago. The guy who had my forks for his Mito chassis has a CB500 engine in it with a Turbo fitted and a lot of home engineered parts, makes around 130bhp

Christ a 500 in a mito chassis with turbo as well. its amazing what people can do.

Think i seen the mito 350 with the gibson pipes?? on a bench if i remember both coming out on the right side of bike.

The reasons behind the ducati forks is that i wanted something different everyone seems to go for the rgv fronts
Mine is based on the tzr125r chassis .

The other main thing was to keep the original speedo so needed forks that use the drive and have means to lock it on fork leg.
Im open to other suggestions even thought maybe rs250 aprillia ones

Sounds like thats going to be a very nice bike, once finished. I've seen a KX500 motor fitted to a monkey bike, was'ent brave enough to have a go, most people managed about 5 foot before being dumped on the dirt!!!:lol:

Rob with the 500 Turbo Mito is often found on the board of the 200mph club. The bike on the bench sounds as if it is Dougies
And as for forks, I think the 748 ones are a good choice as Rob is happy with his conversion. What ever you do avoid the Mito forks they only have a spring in one leg and damping in the other, i'm not sure but I think some Aprilia 2-strokes do the same.
forget the TL idea the bush is 32mm diameter abd uses a 25mm spindle

Thanks for all advice
The original tzr125r forks are like the mito sprung in one and damped in the other a right cock eyed idea if you ask me.

Im sure the ducati forks will be fine too. there are a lot of aftermarket springs ect to play with should i need to but i reckon they will be a good set up as standard forks.

Just got to find a decent set now.
Will do the idea though with spacers of the spindle as this is a good one. i intend to use a fzr 400 front wheel 17 x 3.25 so will give me a decent front tyre without overdoing it. I have just thought about my worry with the speedo drive and how it would fit if forks didnt have a lug on them to locate one. this would be easy if i used spindle spacers as i can incorporate a lug on one to secure the speedo drive if i need to.
Your help has opened my eyes to what i can do so many thanks

The front mudgaurd mounts incorporate a stop for the speedo drive on the 748/916 setup.
The earlier forks use 40mm caliper mount spacing as used on some TZR125s, the later have a 65mm spacing. The 748/916 discs are interchangeable with the 320mm discs found On FZR1000s, TDRs etc, so if you stick with a Yam front wheel you should be OK.
Sorting the triple clamps (yokes) will be the main issue I would have thought. Although the stem in a Ducati bottom yoke is removeable which allows for one made by an engineer to be fitted to mate front end too the headstock/bearings etc. My mate Mick has done a similar sort of thing for a lot of Kwak 750 Turbo owners wishing to uprate their bikes. He usually hangs around the 200mph club mesage board or on Lorcans website where there are pics of a few of the bikes he has done new yoke stems for.