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feef
Energiser Bunny
Joined: 11 Feb 2002
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 Posted: 15:00 - 09 Jan 2008  Post subject: Rear wheel options for an FZR400 3EN2 |
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I've got an FZR400 3EN2 model that I'll be racing this year.
As standard the 3EN2 comes with an 18" rear wheel. All the later models, 3TJ onwards came with a more standard and common 17" wheel.
Tyre choice for the 18" is somewhat limited to say the least.
has anyone got any idea which 17" wheels will fit the 3EN2? I don't mind making up spacers, but I'm not keen on having to machine down the hub.
Some that I've heard MAY fit are:
TZR250
88-89 GSXR750
91-93 GSF400 bandit
but I cannot be sure, as it's hearsay as to whether they fit, and I can't confirm if the anecdotal evidence was for the 3EN2 or an earlier model.
If I can't find a wheel, I'll just have to look at tyre options which come in an 18" size, which are (as far as I can tell)
Dunlop GPR 70 SP
Avon Azaro Storm ST (sports touring tyre)
Bridgestone BT92 (another Sports/touring tyre)
Bridgestone BT090
None of which are race tyres, however I'm wondering if any of them would do for a rookie in his first few races
tia for any suggestions
a
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Barry_M2
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| Posted: 15:11 - 09 Jan 2008 Post subject: |
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The 3 you mention will all fit, but different spacers will be needed for all of them. There are no wheels that are a straight swap as far as I'm aware.
I had a 3EN1 a couple of years ago and put a TZR250 3XV bannan swingarm and wheel in. Never finished the bike off in the end which is a shame, it was a good project.
I remember the GSXR750 wheel being a popular replacement.
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Energiser Bunny
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Barry_M2
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feef
Energiser Bunny
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| Posted: 15:29 - 09 Jan 2008 Post subject: |
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That's where i got my info from.. unfortunately Si got that info from a contact in the US and can't be 100% sure about it's accuracy nor it's origins
I THINK that wheel I found is a late model from the previous incarnation of GSXR and not the early 88-89 that I need,.. as the one I'm looking for I vbelieve is a 3 spoke job
I htink I'll measuer up my spare wheel when I get home, and see how it comapres to the 'Ace and 'Storm wheels
a
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Barry_M2
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| Posted: 15:31 - 09 Jan 2008 Post subject: |
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I'd actually typed out that, about possibly needing the wheel with the solid 3 spokes (later model), then rememberd that site and thought I'd check.
I think your right, its the newer wheel. I brought a Fazer wheel and was going to fit that, but brought the TZR swinger instead.
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hmmmnz
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| Posted: 16:54 - 09 Jan 2008 Post subject: |
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you could probably fit a gs500 wheel with out much bother, although its a 17" its only 3.5 inch wide
if you wanna have a go i have a couple spare ones sitting behind my shed, one in white and one in dark grey actually the dark grey one is a bandit 400 wheel
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Kickstart
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| Posted: 16:56 - 09 Jan 2008 Post subject: |
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Hi
Yamaha are pretty good about not swapping anything unless they have to so swapping stuff onto them from other Yamahas normally seems to be fairly easy.
Are you allowed to swap anything other than the wheel for the class you are entering (surprised that you can swap that for production based racing to be honest).
Think I would be tempted to look at a wheel from an FZR600R, but that might need the swinging arm as well.
All the best
Keith
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TUG
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| Posted: 23:30 - 09 Jan 2008 Post subject: |
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Can I change the rear wheel to a 17 incher?
Sure you can, but note that the only real advantage to installing a 17" wheel is to take advantage of the latest generation of racing rubber.
Contributed by Chris Eklund:
"I currently run Honda CBR600F2 (17x4.50) and F3 (17x5.00) rear wheels on my race bike. My street project FZR600 street fighter will be using a GSXR (17x4.50) rear wheel.
To use the F2/F3 wheels, this is what I had done. Any competent machinist could do this, or they may have a better idea. This is how my guy did it:
First thing is I took Lester a stock wheel complete with spacers, axle, cush drive, brake arm, etc., a spare 400 box-section swing arm and a complete F2 rear wheel. This way he could measure everything from the stock wheel.
He removed the sprocket studs from the cush drive. (Note: Honda uses locking agent that is _tough_! Be sure to heat the studs when you pull them.) The outer bearing surface was machined down. This eliminated the rubber bearing seal, so a single sided waterproof sealed bearing of the Honda OEM size was used. The sprocket surface was also machined to move the sprocket inward. (Note: If you have '90 Deltabox swing arm, the studs need to be shortened and the nuts ground down to clear the swing arm. I'm not sure if this step is necessary on a '88-89 box section arm since they have more clearance. I ground about 2-3mm off the nuts, which was basically the locking portion of it, so I now have mine safety wired. Makes rear sprocket changes time consuming, but it won't come off and I usually know what gearing I'm going to run at what track beforehand. If you can get some low profile lock nuts, that would work well. Ideally, I'd have a spare cush drive modified.
New wheel spacers were machined from steel and have a sleeve for adapting the small FZR axle to the larger F2 bearing. This way the spacers are captive and won't fall out. (Note: Another option is to use the F2/F3 axle. The stock F2 axle will fit in the '90 swing arm. All you'd have to do is drill out the holes in the v-blocks. The F2/F3 axle is about 2mm larger and hollow.
For the brake, Honda uses a floating caliper mounting system as opposed to the Yamaha's fixed caliper. I use a Hurricane 2-piston caliper, but plan to use a F2 single piston one soon. A CR125/250/500 rear caliper might be another option. I've seen a CR125 caliper used on an F2 rim on Simon Forder's EX500.
The large hub on the F2/F3 wheels won't allow an opposed piston caliper go all the way over the rotor. The GSXR wheel can be used with the FZR600 hanger and stock 400/600 caliper or you could get the GSXR rotor turned down the same diameter as the stock 400 rotor. I think the F2/F3 wheels are lighter than the GSXR, but I can't guarantee that. I will be weighing items this winter ('97-'98) and will have the FAQ updated when I do.
The GSXR wheel requires the same type of work, but is simpler for a few reasons. The cush drive uses bolts to secure the sprocket so when you remove the sprocket, the bolts fall out, unlike the studs on the Honda. These bolts are of a smaller diameter than the Honda studs and already uses low profile locking nuts. And as I mentioned above, the brake situation is easier to deal with. Plus it's a three-spoke wheel and matches the stock front wheel. GSXR rims may be getting hard to find since they were only used on '88-89 GSXR750's and '89 GSXR1100's.
Here are GSXR dimensions and directions from Nolan Ballew:
# "Remove .345 from sprocket carrier where sprocket sits.
# Remove .305 from sprocket carrier where stock bearing seal sits.
# Replace bearing with sealed bearing type but same size.
# On sprocket side use stock spacer plus 25mm O.D. 17mm I.D. by 1.73 inch spacer that slips into carrier.
# Use stock brake arm and .510 spacer with 17mm I.D./ O.D. of this spacer is non critical. this spacer goes between brake arm and wheel bearing like stock one.
# The stock Suzuki disc can be cut down to the same O.D. and width as 400. The O.D. with have cut thru holes or you can make a disc. The stock disc cannot be adapted.
# Stock caliper needs bottom left surface filed down about .025 to provide clearance for larger hub of GSX-R-r wheel.
# A 600fzr caliper bracket can be used with the stock Suzuki disc but then you cannot easily switch from a stock wheel to the Suzuki wheel if you have 18 inch rains on stock wheels (Bridgestone).
I don't have a number for the 600 caliper bracket but once the other side is done the measurement should not be too difficult."
I will be measuring my current rim set ups and will soon update this FAQ with the dimensions you will need for modifying a Honda F2/F3 rear rims to fit in the 400 (or 600). TZ250 rims have been used and apparently only require new spacers being made (according to Motorcyclist article 9/90.) TZ rims wider than 5.00 may require moving the chain out to clear the tire.
As recommended by Sam Flemming of the Army of Darkness, Wheels without cush drives should be avoided (i.e. older Performance Machine wheels.) The shock of each power pulse will take it's toll on the 400's not too terribly tough transmission and clutch. |
There. Will cost you money, you could always fit a 3TJ swing arm if it bothers you that much, saves time and hassle, also i have a brand new R6 06 shock that will fit your 3EN2 or if you swap swingers the 3TJ too, all you need is to make dog bones PM me if interested. (R6 shock is fully adjustable)
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hmmmnz
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| Posted: 07:57 - 10 Jan 2008 Post subject: |
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i dare say if you use the bandit 600 rim and gs500 sprocket carrier you should be able to get it to fit, i easily managed to get the bandit rim into the gs500, with a bit of grinding to the caliper bracket,
the bandit 400and 600 sprocket carrier is alot wider than the gs500
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TUG
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dougon2wheels
Nitrous Nuisance
Joined: 28 Feb 2006
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| Posted: 13:00 - 11 Jan 2008 Post subject: |
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i have a 3en2 swing arm in one of my tdr250's,with a 3tj rim,i had to machine the adjusters out to fit the 3tj spindle(no need to do the arm)i also had to make spacers to fit.
i also went for an underslung caliper,so you'd have to decide how your going to do yours
https://w2.bikepics.com/pics/2006/10/10/bikepics-698266-800.jpg
i know the tyres look a bit ballon like,but they were wets,its now shod with supercorsa's  |
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Old Thread Alert!
The last post was made 18 years, 28 days ago. Instead of replying here, would creating a new thread be more useful? |
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