The Eddie Mod - not the Taffy Mod

[Cuchara Red]

In the past few weeks we've had a couple of threads on how to deal with bogging in the slant body FCR. The Taffy Mod WAS the way to address this problem but this old man is saying that is now history. These two threads (to my knowledge) introduced The Eddie Mod. They are complete with pictures so there's no sense in my adding identical pix.

https://www.thumpertalk.com/forum/showthread.php?t=832902

https://www.thumpertalk.com/forum/showthread.php?t=846960

I needed to change jets from high altitude (7500' and up) to 600' so took the opportunity to do the Eddie Mod: 1) shortened the AP diaphram stopper, 2) wired the linkage, and 3) spread the metal arms until the linkage worked smoothly. Finished this morning and promptly took it out to see if it really worked. Long story short, my '03 GreenE has NEVER performed so well since I bought it almost 3 years ago. Every time I twisted the throttle seriously the front came up like it should, reliably and consistently. Instead of bogs I got lifts. I've never been able to get the front end up reliably before. I'm totally stoked.

So, if you've got a slant body and are having bogging problems when you yank on the throttle, forget the Taffy Mod. It's a waste of time. Instead, follow the two threads above and do The Eddie Mod.

As we all already knew, THAT MAN KNOWS HIS STUFF!

Thanks, Eddie. You are outasight. ?

[Wayward Son]

glad its working well!

[HotCorner]

Worked for me too.

[mackez]

And it works for me too!

Thanks!

/MA

[mattTc17]

FCR - is that the stock carb or an aftermarket?

[ROUNDEYEHELMETHEAD]

FCR - is that the stock carb or an aftermarket?

could be either.

this thread is for the old style slant body fcr. not the newer fcr-mx.

the old style slant body fcr was oe on older E models & kick only models.

can also be purchased aftermarket from sudco or cpw.

[2WYKD]

When I pull my bike apart again I'll be doing this one. Hell, might just pull it apart for the hell of it now

[Cuchara Red]

When I pull my bike apart again I'll be doing this one. Hell, might just pull it apart for the hell of it now

It was definitely worth my time and effort!

[KillerDwarf]

I finally got to do test ride yesterday and WOW does it work, way better than the crf diaphram mod! Not only no bog, but revs like crazy all the way thru the range with the additional volume- happy camper here.

Eddie is the man..

[DRZDUal]

*subscribe*

[Wayward Son]

good to hear its working nicely for everyone.

[Roadracer Al]

I can't wait to inspect my FCR for wear on the plastic pump actuator arm -- if there is wear, I'm planning to make a small brass bushing to prevent future wear. This could be the answer to one of the tuning problems I've had with my 39.

It's so easy to overlook such a small detail, but it clearly has a big effect on the AP squirt timing, which has a HUGE effect on throttle response. Thanks for bringing this to our attention, and showing us the way to fix the problems.

Eddie, you ROCK!

[RetroRanger]

does it still make sense to do this mod if there is no wear on the hole or if like Al you bush the hole ?

[Wayward Son]

yes,even with no wear it still works the same.

[dirt_eater]

If anyone replaces their plastic linkage could I have the old one? I have access to a mini CNC mill and have a fettish for CNC parts. I would use mine, but then I gots to take apart my bike. So don't through it away, let me have it please!

S

[txfly]

did the eddie mod to my ktm today. works great! i did manage to nick the part of the 2 springs that are on the ap assembly with my dremmel ( making a notch to secure the wire) however , if i am correct you dont even need the spring now since the ap arm movement is wrist powered now right? before wiring( after cutting the diaphram) the duration became looonnngggg. once wired together its quick and powerful. i guess the spring isnt even doing anything now.

[vash]

Im still having an issue with wiring the arm. it wants seperate at 3/4 throttle, and i dont want to force it.

I grinded it down flat on the diaphram rivet

[odoilrulls]

That was the best mod I've done aside from from getting the fcr itself.

[Wayward Son]

did the eddie mod to my ktm today. works great! i did manage to nick the part of the 2 springs that are on the ap assembly with my dremmel ( making a notch to secure the wire) however , if i am correct you dont even need the spring now since the ap arm movement is wrist powered now right? before wiring( after cutting the diaphram) the duration became looonnngggg. once wired together its quick and powerful. i guess the spring isnt even doing anything now.

why where you near the spring with a dremel?

all the springs need to be intact.

[Wayward Son]

Im still having an issue with wiring the arm. it wants seperate at 3/4 throttle, and i dont want to force it.

I grinded it down flat on the diaphram rivet

spread the fork.