Racing a 3EN2

[willandrip]

Me likes ;
Can upgrade .
Master cylinder swap.
Lightweight rear disc .
Any fork internals modifications.?
Clanky put up a link for a group buy of cartridge emulator valves similar to Racetech but at a 1/4 of the price.
The stock spring and spacer set up is comical when you get it stripped as you know (more spacer than spring.)
I settled on Wirth springs on one of mine and could recommend them for the price.(circa 100 Euros)
Have tried to source adjustable preload caps simply for the "fiddle" factor since, but never had any luck.

[Evilchicken0]

Your probably better off with a front end swap than fiddling with the forks. The 3EN2 went to 41mm so the same as the Foxeye and T'Cat. You'd probably get R6 to fit using the R6 clamps although the stem is probably different. You could maybe find a cartridge for the 38mm forks but that would probably cost more than the bike.

[Kayla850]

Me likes ;
Can upgrade .
Master cylinder swap.
Lightweight rear disc .
Any fork internals modifications.?
Clanky put up a link for a group buy of cartridge emulator valves similar to Racetech but at a 1/4 of the price.
The stock spring and spacer set up is comical when you get it stripped as you know (more spacer than spring.)
I settled on Wirth springs on one of mine and could recommend them for the price.(circa 100 Euros)
Have tried to source adjustable preload caps simply for the "fiddle" factor since, but never had any luck.

TRX850 or FZR600R fork caps might/should fit but I haven't had time to try yet. Chris rebuilt the forks with new seals and fresh (15wt) oil but they were still too soft so I need stiffer springs, we have some TRX forks here so I might see if the springs'll fit- the stanchions are pitted or I'd just use them instead.

[Kayla850]

Your probably better off with a front end swap than fiddling with the forks. The 3EN2 went to 41mm so the same as the Foxeye and T'Cat. You'd probably get R6 to fit using the R6 clamps although the stem is probably different. You could maybe find a cartridge for the 38mm forks but that would probably cost more than the bike.

I know the measurements but front end swaps aren't allowed in F400, or at least the NEMCRC version of it otherwise I'd have binned the standard stuff as soon as the bike got here!

[willandrip]

Here is the link to Clanky's post;
I thought it was on here but its from elsewhere.
Hope he doesn't mind.He is a member here also.

Debrix Cartridge Emulators - Anyone for a UK group buy?
by Clanky » Sat Apr 27, 2013 3:50 pm

Saw an old thread on the Fzrachives and a very recent one on the SVrider forums re Debrix cartridge emulators, they're on sale right now from the US.

Debrix emulators have been fitted to the Fzr 600 (38mm emulators) and will quite possibly the Fzr 400. They've had good reviews from those that have used them and are way cheaper than the Racetech items.

Cost per set right now is £21.95, postage is the killer though £31.50 plus there may be an import duty of around £15.00.

If I can get 5 orders it would work out at £31.25 maybe a bit less if there's no import duty charged. I will get two sets myself so I would need 3 more orders (could get more if there is the interest). The postage charges would be divided per set ordered not per individual (that way we all share a proportionate amount of the postage). There would be a UK postage charge to get them from me to everyone else but that should be fairly low, I can work it out later if people want in.

Link to the thread: http://www.fzrarchives.com/ipb/index.ph ... opic=54771

The damper rod that the emulator should fit into is the same part number on all the FZR 600s so should fit the 38mm and 41mm forks. Part number is 3HE-23170-00-00.
Clanky

[Kayla850]

I'm just going to run the 3EN2 as it is this year and not spend too much on it. That said, the Ignitech is on its way and it does need fork springs. It's fine for me and how fast I am (or not!) and it's really good fun to ride which is what it's all about Brrrrrrmmmm!

[Kayla850]

So then, what's occurred?

Not much, really. The Ignitech doofer arrived but I haven't had the time to have a play with it yet. It looks like there's loads of scope to mess things up though

In other news, I robbed some springs out of some tatty TRX forks we had in and put the preload adjuster top caps from the TRX forks on the 3EN2's forks. I don't know if the springs are better or worse than the standard 3EN2 forks but they're a good chunk longer and linear instead of progressive. The TRX spring + spacer looks to be roughly the same length as the 3EN2 spring + spacer though and a quick blat up the road and a sharp squeeze on the brake doesn't make the front dive so quickly as it did. I might need to take a smidge off the spacer to take a bit of preload off the spring (I can get it back on the preload adjuster as they are wound right out) but it looks like it's going to be better than they were (which isn't really that difficult I suppose )

Looking forward to the next time I can get it out on track at Teesside and my first race in August!

[Kayla850]

Righty dokey, a bit of an update on this-

The Ignitech box plugs in and the engine turns over but there's no spark. I have no idea what I'm doing wrong because the instructions are so poor (or they're too technical and I'm too thick!) although their English is a damn sight better than my Czech! Maybe it's wired to run on a US Genesis loom to allow the use of an EXUP system, and because the 3EN looms are slightly different the Ignitech doesn't work on the later bikes. I don't know but it would make sense if that's the case because the US wiring diagram is the only one that's readily available on t'interweb, it's bloody annoying though because it cost the thick end of £200 with all the cables and stuff.

So back the standard TCI for now

A little bit of experimenting with the wiring from the EXUP and TCI (specifically the red and green restrictor wires) showed that the bike will start and run in neutral without the EXUP servo connected but the red and green wires still connected. The bike will also start and run in neutral with the wires swapped over (ie red to green and green to red). The bike will rev through to 14,000rpm and onwards (in neutral) with the wires swapped over and the servo disconnected. I'm wondering if a simple-ish way to derestrict it would just be to fool the TCI into thinking the bike was in neutral all the time? I'm hoping to test the bike on Monday on track but I might be able to have a quick go in the morning.

I've got no idea what's changed but I'm sure the bike wouldn't even turn over before with the servo unplugged, or maybe I'm confusing it with the 3TJ

[Kayla850]

I spent most of today buggering about with wiring and swapping stuff over. It's no use, even with the TCI fooled into thinking it's in neutral all the time it still won't rev past 12,500 when it's moving. Meh. I'm getting bored with this bike now

[willandrip]

Right;
Now it's towards the end of a probably hard week,the temperature in your worshop will be in the 30 degree range ,there is no accurate wiring diagram for a 3EN2 and you are attempting to circumvent a restriction that was integrated into the ignition system with anti-tamper principally in mind !
Add to that the complications of the Ignitech system which was hoped to be plug and play and has disappointed.
I can see and understand the frustration from here.

Do you believe the restriction is due to the lack of the Exup valve and servo, or as I suspect ;the removal of the speedometer?

I would temporarily refit the speedo c/w cable and drive and test this unless you are 100% positive this bike revved out previously.
I have the same symptoms on the no. 32 bike even with the speedo and servo fitted and working (diagnosis is currently in progress).
Did Freefall Phill not leave a set of clocks with an uncased M-Max box unit fitted with you to try ?
Has a portion of the harness been removed that can be re-instated to refit the servo even without the valve.?

There are posts regarding this problem with proposed solutions way back in the archives but no definitive conclusion was ever reached .

One thing we do not want to see is an abandoned project race bike up for sale.