23 ounce flywheel weights

[TheLetterJ]

http://rypusa.com/s3-spacer-flywheel-weight-gg/

It's only 24 bucks?! I may have to give it a try...

So, the 23 oz fww on a 2k2 would be a similar MOI than if I had a 2k3 ignition and a 10 oz or so?

I hope that was the right one for my 2k3, 'cause I just ordered one!

(Edit: I only questioned if it was correct because the description says "spacer" even though the picture clearly shows the fww itself... hopefully I didn't just buy a thick ignition cover gasket!)

 

[Gass]

I hope that was the right one for my 2k3, 'cause I just ordered one!

(Edit: I only questioned if it was correct because the description says "spacer" even though the picture clearly shows the fww itself... hopefully I didn't just buy a thick ignition cover gasket!)

The EXACT same thing ran through my head. I have my fingers crossed.

 

[TheLetterJ]

I flipped through the S3 catalog first and didn't see a fww/ignition cover spacer listed for the enduro bikes, the only ones I saw were for trials models and were included with the weight where required (not sold separately.) I also didn't find the part number in the S3 catalog that RYP has listed on their site (AS3FW02), so hopefully I get the S3/FW -0638 that is pictured. Fingers crossed indeed!

Did you order one too Gass?

 

[motopsycho87]

That weight fits on my 2k3 with standard cover no problem

 

[risk74]

For that price I would assume it is just going to be a spacer. Everybody else is near the $100 mark for the FWW.

 

[motopsycho87]

Does say spacer....

 

[TheLetterJ]

It turned out to be too good to be true. I received an email this morning saying that their new website just went up and that was incorrect. I just cancelled my order for now since the FWW wasn't real high on my priority list, just figured I'd give it a try at $24! I will say that RYP is on the ball with identifying the problem and they were very polite and prompt with their email.

 

[funmachines]

I've had one on my EC300 for quite a while to help my son manage the power better and on tight rocky single track. I liked it too - it gives it a smoother 4 stroke feel and doesn't spin the rear tire as much. Trials tires don't work as well for me spinning.

 

[motopsycho87]

I've decided to keep mine off.

With the flywheel helping grip it seems to make the bike snappier at low revs, instead of spinning and eventually finding traction, it finds it immediately, which seems to make the bike incredibly tiring to ride. Without it, with a gradual power take up its a lot smoother ride. Or if you really pin it, as aggressive as you want.

 

[cvl05]

23 oz flywheel.

I've been looking around trying to find this product in the USA, are there any dealers selling s3 stuff here that may have or be able to get one of the fw-638
flywheels ??
Thanks in advance.

 

[CanGasser]

I've been looking around trying to find this product in the USA, are there any dealers selling s3 stuff here that may have or be able to get one of the fw-638
flywheels ??
Thanks in advance.

There is a dealer here is Canada dual sport plus, I bought one a couple of weeks ago. I'm not sure if they ship to the USA if not you can have it shipped to my place and I can ship it or could drop it in the mail on the USA side in a few weeks when I an there. If that helps.

 

[cvl05]

flywheel

Thanks for the offer, I will let you know, may have found one in the US.

 

[muellersq]

I am not a good rider, especially when it comes to steep narrow tracks, so a fww could be fine for me (maybe).
On the other hand I have sometimes problem at really steep ascends that have to be climbed with high speed.
If i had such a heavy fww on my ec 300 06, would I have to be earlier with the throttle or open it more (maybe both?

 

[muellersq]

Nobody?
Really??

 

[Jakobi]

The FWW just adds inertia to the engine. It won't build revs as quickly, so will be smoother (less likely to break traction, or get away from you), and the same in reverse. Will want to carry and be less prone to stalling.

It's all personal preference. A 300 should have no issues with a bit of extra weight off the flywheel, if that is what you're looking for. Others prefer snappier more responsive power delivery.

There are always other ways to tame things with throttle tube/cam systems, jetting, gearing, tyre size/mass.

The whole lot works as a system, so really you want to have the suspension matched to your ability and terrain, and balanced front to rear. The engine characteristics to suit your desires. Then focus on your skills. Clutch, throttle, body position, and technique.

All easier said than done. But your issues aren't anything that we all don't face. What one person considers unrideable/impossible another may find a challenge, and another may simply make it look effortless. It's all to do with skill and technique and the more time you put into practicing and improving the better you will be equipped to deal with them. FWW or not.

 

[Jim Cook]

The FWW just adds inertia to the engine. It won't build revs as quickly, so will be smoother (less likely to break traction, or get away from you), and the same in reverse. Will want to carry and be less prone to stalling.

It's all personal preference. A 300 should have no issues with a bit of extra weight off the flywheel, if that is what you're looking for. Others prefer snappier more responsive power delivery.

There are always other ways to tame things with throttle tube/cam systems, jetting, gearing, tyre size/mass.

The whole lot works as a system, so really you want to have the suspension matched to your ability and terrain, and balanced front to rear. The engine characteristics to suit your desires. Then focus on your skills. Clutch, throttle, body position, and technique.

All easier said than done. But your issues aren't anything that we all don't face. What one person considers unrideable/impossible another may find a challenge, and another may simply make it look effortless. It's all to do with skill and technique and the more time you put into practicing and improving the better you will be equipped to deal with them. FWW or not.

Excellent post.
Well said.

 

[Jim Cook]

I am not a good rider, especially when it comes to steep narrow tracks, so a fww could be fine for me (maybe).
On the other hand I have sometimes problem at really steep ascends that have to be climbed with high speed.
If i had such a heavy fww on my ec 300 06, would I have to be earlier with the throttle or open it more (maybe both?

To address your question directly:
With a heavy flywheel weight, you may have to be earlier on your throttle to get the engine up to the rpm you want, since the fww makes the engine gain rpms a bit slower. (Maybe just a fraction of a second sooner, but sometimes that fraction of a second does make a difference.)

As Jokobi said, the flywheel weight will make the engine more resistant to stalling at the expense of a bit of "snap" to the power delivery.
My suggestion is to add a fww if you are having a problem with stalling the engine or a problem keeping the power under control. Also, in your calculations, you can also choose from a variety of weights.

An example: With my 2006 DE300, I had plenty of power and could control it, but my fuel usage was too high. I wanted more mileage from a tank of fuel.
I contacted RB Designs and had them reshape my cylinder head and adjust the squish band by shaving it a bit.
When I reinstalled the head after modification, my mileage greatly improved.
However, the engine gained enough extra snap in it's power delivery that I was having trouble keeping the rear wheel from breaking loose in rocky off-camber corners. (The rear wheel caught up with the front wheel twice on the first test ride. )
I then installed a Checkpoint Machine 10oz flywheel weight and my testing showed that I now still had "snap" in my power delivery but not more than I could use or control. (I just looked at their website an it seems that now they only offer the 12oz weight.)
Matt Stavish, who owns and operates Checkpoint Off-Road, was a spoonsered rider for the GasGas Factory's National Enduro and Hare Scrambles team in the early 2000s. Here is that catalog page which shows the fww weight.
http://checkpointoff-road.com/store.html

I"ve played with all the different size flywheel weights available, and I personally don't like the extremely heavy fww. (23oz) They take too much of the "play power" out of the power delivery. And, sometime that extra snap will get my front wheel up over an obstacle a quickly as I need it to.
A 10oz weight is usually my recommendation for someone who wants to race, but have more control over the engine.

You will just need to decide what you need, in relation to what you have now, and do what's best for you.

I hope that this helped you in your deliberations.

Good Riding!
Jim

.

 

[muellersq]

Thx Jakobi and Jim, you confirm what I already was afraid of, the fww won't make me a better rider

Less stalling sounds good to me as kickstarting at steep hills isnt my favorite...
I'll try to find a 12oz fww here in europe.

 

[(F5)]

My 2007 loved the extra weight, I love it in the muddy conditions we often get here. But the head mod makes the bike Trials like at low revs. Great for tricky stuff. Do that.