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FZ project. *Swingarm swap.*

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hellraiser
Nitrous Nuisance



Joined: 05 May 2006
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PostPosted: 19:04 - 31 Jan 2010    Post subject: FZ project. *Swingarm swap.* Reply with quote

Owned this bike since 2004.
1987 FZ750.
Done me well in the past, including some respectable 1/4 mile times. Wink

https://i57.photobucket.com/albums/g227/h3llr4iser/FZ.jpg
https://i57.photobucket.com/albums/g227/h3llr4iser/FZ2.jpg



Back in 08, i spent some money on her, as was looking a bit abused.
New dark screen, front tyre, replacement sump, shortened end can slightly. Amongst a few other bits.
No pics of how it looked after tidying up. Sad

Shortly after, it got reversed into by some silly cow who drove off! Evil or Very Mad (was parked up at the time)
Ive nearly broke it for parts a number of times, but just can't.
I still love this bike. Rolling Eyes Very Happy

Built my other bike quickly so i'd have something to ride.
So the FZ has sat in the shed since.....May 2008.

Got this from a friend for much cheapness.
Sometime early last year.

https://i57.photobucket.com/albums/g227/h3llr4iser/YZF%20750/FZ/photo0582si0.jpg

Everything needed for a rear end conversion Thumbs Up
Couldnt believe the bargain price for, swingarm, shock, wheel, disc, caliper and sprocket etc. Very Happy
Never was keen on the skinny rear FZ wheel.

So last year i stripped out the old swingarm, shock and wheel.

https://i57.photobucket.com/albums/g227/h3llr4iser/YZF%20750/FZ/DSC00837.jpg

https://i57.photobucket.com/albums/g227/h3llr4iser/YZF%20750/FZ/DSC00838.jpg

Fitted the R1 assembly loosely, for an idea of looks and what modification it will require.
Seen FZ's done with other Yamaha rears (fzr1000 both exup and pre-exup, and also YZF750) so can't be that hard, can it Question

https://i57.photobucket.com/albums/g227/h3llr4iser/YZF%20750/FZ/DSC00841.jpg

https://i57.photobucket.com/albums/g227/h3llr4iser/YZF%20750/FZ/DSC00843.jpg

Then it sat there like that till the other day, thought it was about time I got the project moving again. Smile

The R1 swingarm pivot measures 260mm wide. (without end-caps)
Whereas the FZ is 245mm.
So i had to lose 15mm.
Decided to take 7.5mm of material from each side.

Pushed the bearings further into the swinger, as there is plenty room for this.
Then got to work removing material.
Fitted end-caps back on and trial fitted.
Took a couple of hours to get to that stage. Rolling Eyes
That was Thursday............

More progress made today. Very Happy

Been quite lucky with this, as the original FZ pivot sleeve
is a perfect fit for the R1 bearings.
Idea So all is needed is to insert the FZ sleeve into R1 bearings and I can use the original FZ pivot bolt setup! Thumbs Up

R1 Pivot, with bearing pushed in and material removed.
https://i57.photobucket.com/albums/g227/h3llr4iser/YZF%20750/FZ/DSC00137.jpg

FZ sleeve into R1 bearing.
https://i57.photobucket.com/albums/g227/h3llr4iser/YZF%20750/FZ/DSC00138.jpg

Perfect fit! Very Happy
https://i57.photobucket.com/albums/g227/h3llr4iser/YZF%20750/FZ/DSC00139.jpg

Ready for fitting!
https://i57.photobucket.com/albums/g227/h3llr4iser/YZF%20750/FZ/DSC00136.jpg

Had to remove the battery box and some other gubbins.
this is where it's going.

https://i57.photobucket.com/albums/g227/h3llr4iser/YZF%20750/FZ/DSC00135.jpg

This bracket (battery box sat on this) was right in the way of the rear shock. So out came the grinder Twisted Evil

https://i57.photobucket.com/albums/g227/h3llr4iser/YZF%20750/FZ/DSC00133.jpg

That's better! loads of room now.

https://i57.photobucket.com/albums/g227/h3llr4iser/YZF%20750/FZ/DSC00140.jpg

https://i57.photobucket.com/albums/g227/h3llr4iser/YZF%20750/FZ/DSC00143.jpg

From the side.

https://i57.photobucket.com/albums/g227/h3llr4iser/YZF%20750/FZ/DSC00141.jpg

Bottom R1 linkage lines up with the original bottom mount.
Couldn't of asked for it to be easier really.

https://i57.photobucket.com/albums/g227/h3llr4iser/YZF%20750/FZ/DSC00142.jpg

Will have to fabricate and weld a new top shock mount.
And get some spacers made up for fitting shock and linkages.
Battery will have to be re-located behind the rear light i think.
But will get there eventually.
I used some ally bar and loads of cable ties to keep the rear shock in place.
Re-fitted the bodywork and seat, then wheeled it out for a better look. Pretty damn happy with how it's gonna turn out.

https://i57.photobucket.com/albums/g227/h3llr4iser/YZF%20750/FZ/DSC00147.jpg

https://i57.photobucket.com/albums/g227/h3llr4iser/YZF%20750/FZ/DSC00145.jpg

https://i57.photobucket.com/albums/g227/h3llr4iser/YZF%20750/FZ/DSC00148.jpg

https://i57.photobucket.com/albums/g227/h3llr4iser/YZF%20750/FZ/DSC00144.jpg

https://i57.photobucket.com/albums/g227/h3llr4iser/YZF%20750/FZ/DSC00149.jpg

Chain allignment is looking pretty good also.
Think i may have to space the foot rests out to clear the arm, maybe one of the pillion pegs also.
After that, i'll need some other parts to get it back on the road.
Another screen, clutch slave rebuild kit, rear brake lever, front brake lever, some mirrors and some fairing repair.
Probably more stuff, but that's off the top of my head. Rolling Eyes
......oh and some fork seals, if i keep that front end on for now.

Cheers for reading! Very Happy Thumbs Up
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oJaXo
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PostPosted: 19:53 - 31 Jan 2010    Post subject: Reply with quote

looks alot better with a nice wide rear end
Thumbs Up
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BenR
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PostPosted: 20:30 - 31 Jan 2010    Post subject: Reply with quote

Looks good, nice work. However it looks like the R1 swingarm has lengthened the wheel base a bit? That won't aid handling much.
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hellraiser
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PostPosted: 21:10 - 31 Jan 2010    Post subject: Reply with quote

oJaXo wrote:
looks alot better with a nice wide rear end
Thumbs Up


Cheers! Very Happy Thumbs Up
My thoughts exactly!

BenR wrote:
Looks good, nice work. However it looks like the R1 swingarm has lengthened the wheel base a bit? That won't aid handling much.


Cheers also! Very Happy Thumbs Up
took less time than I thought it would, and with minimal tools/effort.

I also was concerned with the wheelbase change, and whether it has been lengthened.
.......been comparing pics.....this is a little crude but serves a purpose,
until i get out there and measure up properly.

The wheel spindle seems to be in roughly the same place as before.
And the edge of the tyre seems to be tucked in under the subframe a little more.

https://i57.photobucket.com/albums/g227/h3llr4iser/YZF%20750/FZ/beforeafter2.jpg

Handling may not be affected in a negative way, think the change from an 18inch rear to a 17 may have compensated for any change in length?
Better choice of rubber in that size. Very Happy
Tyre width was 140. Thats a 190 on there now.
I might fit a 180 when it's replaced though.

Been thinking about having a 17 on the front as it's 16 as standard.
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Kickstart
The Oracle



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PostPosted: 21:14 - 31 Jan 2010    Post subject: Reply with quote

Hi

Nice to see another FZ around.

Think using the FZR swinging arm it pretty much bolts straight in.

FZ has a pretty long swinging arm anyway. Not sure the R1 arm has stretched the wheelbase much.

All the best

Keith
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hellraiser
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PostPosted: 21:24 - 31 Jan 2010    Post subject: Reply with quote

Kickstart wrote:
Hi

Nice to see another FZ around.

Think using the FZR swinging arm it pretty much bolts straight in.

FZ has a pretty long swinging arm anyway. Not sure the R1 arm has stretched the wheelbase much.

All the best

Keith


I couldnt bring myself to break it after the reversing incident.
Still love it as it was my first bike after passing my test.
I kinda feel like i owe it some love! Laughing


Was going to go the FZR route but decided to be awkward Rolling Eyes
They don't take a lot of work to fit, seen it done quite a lot.
I've only found one other FZ with an R1 rear since i started this.
I got offered the whole back end for ?50 so had to have it Smile

See what you think to the above post regarding wheelbase,
think i was still typing it when you replied.

Cheers

Steve
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Kickstart
The Oracle



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PostPosted: 21:53 - 31 Jan 2010    Post subject: Reply with quote

Hi

I have had my FZ750 for about 20 years now. However I need to do some work to get it back on the road. Not much. Need to adjust the rear Ohlins shock (which might be easily done by removing it first and adjusting it off the bike!)

Agree that it doesn't look like the wheelbase has changed much. The 17" rather than 18" wheel shouldn't make any difference to the wheelbase (well, a tiny amount from lifting / lowering the rear end).

All the best

Keith
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alun111
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PostPosted: 00:48 - 01 Feb 2010    Post subject: Reply with quote

Nice job, looking good.

I think the r1 swinger looks longer as you the rider pegs haven't been put on yet in that photo so the front of the swinger isn't being covered up, creating an illusion.
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BenR
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PostPosted: 18:23 - 01 Feb 2010    Post subject: Reply with quote

All you need now is an R1 front end to match, it certainly handle & stop better. Thumbs Up I think it may be just how the bike looks in the pictures about the wheel base. Are you going to paint it? Good luck with it. Thumbs Up
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hellraiser
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PostPosted: 02:48 - 02 Feb 2010    Post subject: Reply with quote

Kickstart wrote:
Hi

I have had my FZ750 for about 20 years now. However I need to do some work to get it back on the road.
Not much. Need to adjust the rear Ohlins shock (which might be easily done by removing it first and adjusting it off the bike!)

Agree that it doesn't look like the wheelbase has changed much. The 17" rather than 18" wheel shouldn't make any difference to the wheelbase (well, a tiny amount from lifting / lowering the rear end).

All the best

Keith


Wow! You must have owned that from new then? Or nearly new?
There's definitely something about FZ's Wink
Maybe i'll hold on to mine for that long, previous owner had
looked after it and spent some money on some tasteful mods.
Thought i got it for a fair price considering it had a full Remus system, twin headlight fairing conversion,
and the billet front calipers with braided hoses. Very Happy

Where i weld in the top shock mount is also going to dictate the ride height and the angle the swinger sits. I better get this right! Shocked

How long's yours been off the road?
Oooo Ohlins? can see it being easier off the bike, not the most accessible place to reach on an FZ.
I've got a used Hagon shock from a while back,
but that'll be of little use, as i'll probably be using the R1 shock now.

alun111 wrote:
Nice job, looking good.

I think the r1 swinger looks longer as you the rider pegs haven't been put on yet in that photo so the front of the swinger isn't being covered up, creating an illusion.


Thanks! Thumbs Up obviously gonna take some tidying up before final
fitting but i do think it's going to look great!

Yeah i agree, i've yet to fit the pegs etc back on so will see how it looks after. Think they might need spacing outwards.
May even go for some Raask rear sets at some point. Thinking

BenR wrote:
All you need now is an R1 front end to match, it certainly handle & stop better.
I think it may be just how the bike looks in the pictures about the wheel base. Are you going to paint it? Good luck with it.


Don't i just! Twisted Evil
funnily enough i have one!.......but most of it's crash damaged beyond repair Sad
Bloke chucked it in free with the rear stuff.

What i do have is an FZR1000 (genesis)front though.
It's still a RWU front end, but bolts straight in, (as does an fzr exup USD front end)
can have a 3 spoke wheel more in keeping with the new rear, and the forks are slightly fatter.
Also gives me the option of the bluespot calipers to match the rear.

One thing with changing to chunkier forks, could end up with clearance issues with the top fairing.
Seen it done and does look smart though8o)

I may try just the front wheel first, The fzr one is powdercoated black and is immaculate.
Could try a TZR250 (double disc version) one i have.
That is silver with a polished rim, so would look great with the silver rear. I have a few sets of front discs to play with Wink

Stopping power was excellent due to the billet 4pots, but i'll be interested to see what it'll handle like.
If the front does change, then the billets might be replaced.

Tempted to keep running the front for now, as thats a pretty much brand new tyre from before.
Hmmm.....running a sporty rear with a bt45 front could prove 'interesting'. Confused


Ah decisions, decisions! Confused Rolling Eyes

First job is to get the rear properly sorted, top mount welded very soon i hope.

As for paint, it may stay standard. Although it's looking a bit tired in places and does have some damage.
Could say it gives it character.
Would be interested in any ideas to convince me, from anyone. Thumbs Up
Satin black all over!?? Laughing
Maybe a retake on the original scheme?
Or another FZ scheme.

Cheers Very Happy

Steve.
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Kickstart
The Oracle



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PostPosted: 08:02 - 02 Feb 2010    Post subject: Reply with quote

Hi

Mine is an early 1FN model, think registered in 1986. I bought it at the end of 1990, used it loads until 1994 then it was off the road for a couple of years. Back on the road for a year and a friend borrowed it for a year, then back off the road for another 3~4 years, back on the road for a year and now been off the road for 6~7 years I think. Engine is healthy enough, have a pair of wheels that have recently been powder coated to go on, decent disks, decent original calipers and keep picking up spares that will be useful.

Mine did have a Quadrant rear shock on that was dire. Had a damping adjuster that was just about impossible to use. Went from so heavily damped you could time it rebounding with a calendar to bouncing up violently and trying to take your nose off with a tiny movement of the adjuster.

The 1FN has a different shock linkage to the later 2MG models. Loads of other small differences as well (ignition system is quite different for example).

Originally had a Micron 4>1 exhaust which was pretty poor. Had a massive flat spot from 3k to 4k (they are renowned for it). Now has a Laser exhaust which works very well. Also have a fair condition original Yamaha exhaust here as well.

If I wanted to get it on the road then a couple of hours fiddling and a new battery would probably do it, but tempted to strip it and powder coat the frame.

All the best

Keith
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hellraiser
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PostPosted: 19:33 - 24 Jun 2010    Post subject: Reply with quote

Kickstart, has yours got the half fairings, like the 85 model.
Do like the look of those Cool been tempted to switch to the smaller lowers myself.
I'm similar with my bikes, always one on the road and another off.
Keep getting ideas of other projects too, but need to get the FZ back to being ridden again.
Hardly worked on it since i last posted, the odd fiddle about with a few bits, nothing major.
Done a little in the last week or two so will update in a bit.

Almost bought a Quadrant rear shock some time ago, glad i didnt now! Shocked Laughing
got a pretty good condition hagon though, doubt i'll be needing it now.

Yeah i've seen quite few differences between FZ's, mate had one with the weird chain driven shock adjuster Laughing

Mines got a slight flatspot in the same rev range with the remus, can live with it.
Sold a micron system when i was building the yzf for £240 which funded the Akra system for the yzf which only cost £260. Wink

Be good to see yours on the road mate, dont see that many about.
I'd powdercoat my frame aswell, but just wanna ride it soon!

Update of mine to follow. Smile
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Kickstart
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PostPosted: 20:25 - 24 Jun 2010    Post subject: Reply with quote

Hi

Mine has the half fairing but doesn't have the belly pan than was fitted to some bikes. Not sure how easy it would be to fit the small side fairing from the early ones. Think the main mounting point isn't on the frame, and I think the late coils are in a different place to the early bikes. Should be possible but you might need to weld a few brackets on the frame.

Mine had the chain driven shock adjuster when new, but the shock got old (would have rebuilt it but I had to cut it off).

Do need to powder coat the frame and clean up bits on mine.

All the best

Keith
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hellraiser
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PostPosted: 00:52 - 26 Jun 2010    Post subject: Reply with quote

Hi, well if i go the route of the half fairing then i'll see if it's much hassle, cant be as much as this swingarm swap! Confused

Right, update, not too much to get excited about, but it's getting closer to how i want it.

Took this after the end of play last time, cant believe i havent touched it since Febuary Confused
Tried it with a 17" wheel sat next to, and my other Remus can.

https://i57.photobucket.com/albums/g227/h3llr4iser/YZF%20750/FZ/DSC01461.jpg

Then i tried the fzr1000 forks with an fzr400 or tzr250 wheel,(cant remember which) suited it well. Silver spokes and polished rim. Cool

https://i57.photobucket.com/albums/g227/h3llr4iser/YZF%20750/FZ/DSC01613-1.jpg

https://i57.photobucket.com/albums/g227/h3llr4iser/YZF%20750/FZ/DSC01616-1.jpg


Found the fzr1000 lower yoke is twisted. Mad
Forks hard to place into both yokes, and hits rad on right side full lock. Sad
Also using the fzr forks, i'd have clearance issues with the handlebars and the top fairing/clocks.
Best way ive heard is to have 4" risers and drag bars.
so went back to original FZ forks and a change of front wheel.

Switched to the fzr1000 wheel. discs arent important at mo and are interchangeable.

https://i57.photobucket.com/albums/g227/h3llr4iser/YZF%20750/FZ/DSC01617-1.jpg

Either front wheel/fork conversion required a sleeve for the spindle/bearing interface. (15mm ID 17mm OD)


https://i57.photobucket.com/albums/g227/h3llr4iser/YZF%20750/FZ/DSC01618.jpg

Checked wheel allignment. Luckily dead centre or thereabouts! Smile


https://i57.photobucket.com/albums/g227/h3llr4iser/YZF%20750/FZ/DSC01622.jpg

https://i57.photobucket.com/albums/g227/h3llr4iser/YZF%20750/FZ/DSC01623.jpg

Chain allignment is worse than i first thought. Sad
Spaced out the front sprocket, but wouldnt be able to fit the tab washer. Confused maybe loctite will dispell any worries of it loosening.

Turned the rear sprocket around to face inwards, think that lines the chain up a few more mm closer.

Before spacer.

https://i57.photobucket.com/albums/g227/h3llr4iser/YZF%20750/FZ/DSC01632-1.jpg

After spacer.

https://i57.photobucket.com/albums/g227/h3llr4iser/YZF%20750/FZ/DSC01634-1.jpg

Sprocket nut reversed.

https://i57.photobucket.com/albums/g227/h3llr4iser/YZF%20750/FZ/DSC01636-1.jpg

Rear sprocket reversed.

https://i57.photobucket.com/albums/g227/h3llr4iser/YZF%20750/FZ/DSC01626.jpg

https://i57.photobucket.com/albums/g227/h3llr4iser/YZF%20750/FZ/DSC01625.jpg

https://i57.photobucket.com/albums/g227/h3llr4iser/YZF%20750/FZ/DSC01627-1.jpg

https://i57.photobucket.com/albums/g227/h3llr4iser/YZF%20750/FZ/DSC01628-1.jpg

Definately a wonky chain there, a step where it leads to rhe front sprocket, but the plastic chain runner emphasises this. (also needs modding due change in swingarm pivot width Evil or Very Mad )

Footpegs/hangers refitted, clearance is fine! Very Happy
Swingarm looks a bit shorter too.

https://i57.photobucket.com/albums/g227/h3llr4iser/YZF%20750/FZ/DSC01638-1.jpg

Top shock mount support going here.

https://i57.photobucket.com/albums/g227/h3llr4iser/YZF%20750/FZ/DSC01645-1.jpg

A while later made this up to fit the frame.

https://i57.photobucket.com/albums/g227/h3llr4iser/YZF%20750/FZ/DSC01646-1.jpg

https://i57.photobucket.com/albums/g227/h3llr4iser/YZF%20750/FZ/DSC01647-1.jpg


Thats it for now really, done more last day or two, especially tonight. (with many beers Twisted Evil )
No pics tho, just measuring and mocking up the rear shock placement. Rolling Eyes
Made a start on the top shock mout bracket.....and smoke loadsa fags!! Laughing

Still front brakes to sort, maybe caliper brackets too.
Loads of other srtuff till it's anywhere near rideable again. Rolling Eyes

Doesnt the matching silver wheels look good? Cant decide where to go with the wheel colour/arrangement. Confused


Cheers Smile Thumbs Up
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Kickstart
The Oracle



Joined: 04 Feb 2002
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PostPosted: 20:18 - 27 Jun 2010    Post subject: Reply with quote

Hi

Not sure on the wheel colours. Doesn't really go with anything else on the bike.

As to the front sprocket, would have a look to see if someone can make you up an offset sprocket. Or just get an FZR1000 engine Wink

All the best

Keith
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CHR15
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PostPosted: 21:51 - 27 Jun 2010    Post subject: Reply with quote

if youve got welding equipment and such, why not buy a new front sprocket.

take two sprockets, cut the teeth and some outer metal off one, and cut the centre out the other, then weld them side by side, so the second sprocket fits over the sprocket nut and steps it out.
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hmmmnz
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PostPosted: 14:25 - 28 Jun 2010    Post subject: Reply with quote

CHR15 wrote:
if youve got welding equipment and such, why not buy a new front sprocket.

take two sprockets, cut the teeth and some outer metal off one, and cut the centre out the other, then weld them side by side, so the second sprocket fits over the sprocket nut and steps it out.


or just buy an off set sprocket
https://www.offsetsprocket.com/
or out of japan
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CHR15
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PostPosted: 16:50 - 28 Jun 2010    Post subject: Reply with quote

Quote:
or just buy an off set sprocket
https://www.offsetsprocket.com/


95 dollars for a front sprocket!!!!

Shocked Shocked Shocked
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hellraiser
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Joined: 05 May 2006
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PostPosted: 17:51 - 29 Jun 2010    Post subject: Reply with quote

CHR15 wrote:
if youve got welding equipment and such, why not buy a new front sprocket.

take two sprockets, cut the teeth and some outer metal off one, and cut the centre out the other, then weld them side by side,
so the second sprocket fits over the sprocket nut and steps it out.


Been thinking along those lines, i did put another sprocket behind,
(spare from yzf when i went to a 15tooth) but haven't tried it with
the chain.
If i go the route of fabricating it i think i'll farm it out to someone more capable, and access to better tools.

I checked those sites hmmmnz, think 52quid delivered was the best i found. Trying to find a UK supplier. Confused
The joining of two sprockets could work out cheaper. Especially when i have two to use already.
Until i've checked how much offset i need i'll hold off on the sprocket for now.
Plenty of other bits to be doing. Rolling Eyes

Kickstart wrote:
Hi

Not sure on the wheel colours. Doesn't really go with anything else on the bike.

As to the front sprocket, would have a look to see if someone can make you up an offset sprocket. Or just get an FZR1000 engine

All the best

Keith


I kinda thought wheels both silver suited it ok, Laughing may change the bodywork colour yet so will see later on.
Thought FZRthou engine would line up the same though? Thinking
Is there a difference with the output shaft?
Or maybe the engine sits more to the left?
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Kickstart
The Oracle



Joined: 04 Feb 2002
Karma :

PostPosted: 17:56 - 29 Jun 2010    Post subject: Reply with quote

Hi

To be honest I am surprised as well, as wider wheels is a fairly common mod.

Might be worth asking on https://www.fz750.net .

All the best

Keith
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hellraiser
Nitrous Nuisance



Joined: 05 May 2006
Karma :

PostPosted: 17:17 - 01 Jul 2010    Post subject: Reply with quote

Indeed, i've seen FZ's with fzr (exup and pre exup) rears on.
ZZR wheel been done aswell i think.

I do go that site now and again. Wink

I'll worry about the sprocket when the top shock support/mount is
all welded in and secure.
Front forks need seals doing, clutch slave kit, new screen, re-seal sump,
er.... plenty more before i can even think about a test ride. Evil or Very Mad
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Kickstart
The Oracle



Joined: 04 Feb 2002
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PostPosted: 17:22 - 01 Jul 2010    Post subject: Reply with quote

hellraiser wrote:
clutch slave kit


You might find that Yamaha don't list the seal kit for the FZ750, just a complete new slave cylinder. However I think the matching seal kit is listed on the FZR1000 parts list.

All the best

Keith
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hellraiser
Nitrous Nuisance



Joined: 05 May 2006
Karma :

PostPosted: 17:40 - 01 Jul 2010    Post subject: Reply with quote

Yeah, yzf's the same also, pinched the slave off the FZ for it when that leaked.
I'll probably get one from wemoto or wherever's cheapest.

I got stung for 90quid once for a complete slave. Shocked
Before i knew it was just a seal kit needed to repair.
Made the mistake of taking it to a shop to fix a while after i first bought it. Mustve seen me coming.
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