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Steahly 11 oz Flywheel Weight on 01' RM 250

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Posted by: Chief

I have an 01 rm 250 that has mild porting for woods By E.G. I ride woods, hardly any mx. I use pumpgas.

I went on 2 rides with the new weight. The first was local. Very rocky terrain in general. For the woods the weight made it easier to do some short wide open rips. Just smoothed out the hit. I can be on the throttle wide open more often, which feels great. I was hoping the FWW would eliminate the low throttle sputter, which it did not. The bike still sounds the same, however the general feel of the bike is very smooth now at low throttle, even though the bike sputters, I barely feel it. That is very nice. As far as climbing, and I can't say for sure if it's the weight, but it climbed well. I'm talking about mostly softer straight up long coal hills. I did climb the largest hill around here that day. It has a severe angle and is very long. I've looked at that hill several times before and chickened out, It only has one path up it and has very little sign of being used much. I attempted it this time expecting to make it about halfway, but it tracked unbelievably on a maxxis 6001 that only has 1/3 tread left. Made it up twice no problem. It is by far the longest steepest hill I've ever done.

I haven't been big on long wheelies up to this point, but the few I did were easier to hold, more controlled. I'm looking forward to practicing them now where before I always felt like the bike would flip without warning, and did a few times in the past.

The second ride was on mostly faster stuff, and it ran well, perfectly. I don't notice any lack of power, it just feels smoother, still comes on strong. It still breaks loose easily, but now it's only when I do it intentionally. On this ride I did get to do a few very rocky twisty hills, although I've ridden worse. It is easier to get started from a dead stop halfway up. Even in the tough spots that might stop you in the first place.

Lastly, I tried lugging the bike as low as I could, both uphill, downhill, and on flatground. It will lug considerably more with the weight when I push it to it's limit, one point to make here is I hardly ever push it this far anyway. In the spots where I have stalled before, the very extreme rocky, long stuff that beats me up, I would expect the bike to stall less.

Overall I am very pleased with the results, although the performance changes are somewhat subtle, the rides have been 100% more enjoyable, and I am definetely less tired after I ride. I would do this mod again given the choice. I am also happy with my choice of the 11 oz, they do offer a 13 oz, and I guess that would have been a good choice for what I ride and how I ride as well. I am glad I didn't get the 7 or 9 oz. On a bike with more stock weight I would be leary of going too heavy and probably go with the lightest weight available or none at all.

To install it I had to drop clothesline down the sparkplug hole. Anything else I tried wouldn't hold the flywheel still while torquing the weight. Steahly also makes an optional flywheel holder for 9 dollars if you plan to install/uninstall the weight frequently. The original nut came off with an electric impact wrench no problem. To make room for the weight, they give you a thick plastic sidecover gasket (appx 1/8"). My shifter still clears it, but not by much. A little heat and bending could solve that.

Joe Chief


Posted by: Nevada Sixx

thanks for the ride report. would you go up to the heavier weight if you could buy it over again? maybe a 12 or 14oz? maybe you could do some mx starts and coming out of corners trying to gain speed, and tell us how that goes...
keep us up to date,,fww is a good topic.


Posted by: Chief

Hi Nevada,

No problem on the report. It's half the fun of doing the mods :thumb:

For my bike the only bolt-ons were from steahly, options were 7, 9, 11, and 13 with 11 considered standard. I suppose the 13 would have done fine too, like I said, the changes it made were subtle, so the 13 might have been better, but I doubt 2 oz would make that much of a difference in my case. I am very happy with the 11. The stock crankweight on my bike was one of the lightest ever from what I've read here, so for woodsriding and non competition riding, I think either the 11 or 13 would be fine. I can tell you the stock weight was lousy for woods. I'll be back out within 4 days and will try some 2nd gear starts and corners if I come across any mx type corners in my travels. I just did a few practice starts last week without the weight so I should be able to compare them well. You can call steahly and they will help you out as far as your level and riding style if you need to. If you get a weight that is too heavy you could also shave it to your liking.

Happy Trails,

Joe Chief


Posted by: RM_guy

Stinking flywheel weights! HA!!! Who needs 'um. I like that instantaneous power that snaps you neck back and rockets you through the woods


Posted by: Chief

Quote:
Originally posted by RM_guy
Stinking flywheel weights! HA!!! Who needs 'um. I like that instantaneous power that snaps you neck back and rockets you through the woods


And into tree branches Say, how about posting a pic of that huge gash on your arm again Can you hold a pencil yet? If you ever take me up on that offer to ride local with me (you know, the terrain that separates the men from the boys) you may change your mind about weights. But you'll probably never make it down here. Oh well...... I guess I'll have to see you at Paragon or mx 573.

Joe Chief


Posted by: Dist1740b

Chief
Do the set screws back out like there install sheet says will happen every ride?I want to lock tight them but the sheet says DO NOT or you will
Seize them!?!
hmmmmm.
Thanks Tony


Posted by: Chief

<WISEGUY MODE ON>
Set Screw??? HecK I dontknow bout no setscrews. Oh ya, matter a fact I do. I left the setscrew all the way out when I installed it and wouldn't ya know, It's still in the same spot.
<WISEGUY MODE OFF NOW>

My mosel doesn't yoose a set scrue. Oll I did was drop a rope down the hole ('he said hole') And use a desent torkue rench to crank on it. (Be'in I aint got no frindz)

So You Work for Steahly???

Joe Chief


Posted by: Dist1740b

No I don't work for stealy
I just bought there flywheel weight though
and there are 4 set screws on it that push up
against your existing flywheel.
the instructions say they back out by themselves?
and you have to constantly re seat them (Drag)...
I do not have any rope handy but i do have
about 300 yds of 6lb spider wire fishing line
i'll feed that down the barrel....


Posted by: Chief

SpiderWire

I guess yours is a different design. On my model The weight they sent me replaces the nut. You bolt a temporary bracket on the weight that has a 1/2" square cut in the middle for torquing. Also had to put a spacer gasket (supplied) so the cover would clear it. I was still able to use the original allen screws to hold the cover on instead of the phillipshead screws they sent which were a bit longer.

So did you get the weight on? How do you like it? Overall my bike is smoother and easier to ride, but the difference really isn't that noticeable. I guess it was worth it and I would do it again although I was expecting more change out of it.

Joe Chief


Posted by: drzgod

Chief:

My Steahly FWW for my YZ installs exactly like you said, but it does have 4 set screws that you tighten down on the original flywheel as well. Must be the different models. Steahly says you need to check the screws as part as your regular maintenance plan. I've checked mine twice since I installed it, (4 months ago) and they have been tight both times.


Posted by: muddy226

I have a Steahly weight (10oz) on RM250, 2000, which is only used for Mx and it works a treat, much better coming out of corners, and also I think it may make jumps more predictable due to bad throttle control not having such a quick effect. It is just the thread on type with no set screws, I didn't like their ideas for locking the engine, and used to lock it by taking out the chain link, putting the bike in gear and jamming 2-3 links of chain between front sprocket and swingarm, but now for torqueing up I use a chain type oil filter on the exposed bit of flywheel, which works well with less damage risk, and also its easier to make sure the weight is fully seated if you take the fly off before fitting. I read something recently suggesting 10oz is too heavy for Mx, any thoughts ?


Posted by: muddy226

I have a Steahly weight (10oz) on RM250, 2000, which is only used for Mx and it works a treat, much better coming out of corners, and also I think it may make jumps more predictable due to bad throttle control not having such a quick effect. It is just the thread on type with no set screws, I didn't like their ideas for locking the engine, and used to lock it by taking out the chain link, putting the bike in gear and jamming 2-3 links of chain between front sprocket and swingarm, but now for torqueing up I use a chain type oil filter wrench on the exposed bit of flywheel, which works well with less damage risk, and also its easier to make sure the weight is fully seated if you take the fly off before fitting. I read something recently suggesting 10oz is too heavy for Mx, any thoughts ?


Posted by: Chief

I think whoever wrote that was just voicing their thoughts. All depends on the bike, rider, and terrain. In my case I would have gone heavier than the 13 I put on. That would only put me up to 15 oz, the max they offer for my bike. I think my bike would work fine mx w/ the 15 oz. Then again I ride woods.

Joe Chief


Posted by: Bazooka Joe

Hey Chief, Joe from MN here.

I had the 13oz on my 01 RM250, and also tried a bud's 11. There wasn't a huge amount of difference, but it was noticeable.

Currently, the 13oz is on the (now kid's) 02.

To those who say the RM's would be fine in the woods w/o a FWW,,,, well, that depends what you call woods, I guess. In the rocky, hilly, rooted, loose, wet, + tight trees I ride in,,,, YES, the 01/02 RM's NEED some extra FWW.

Actually, most motobikes will benefit from some added FWW. I have a 10oz on the 03 YZF250 and I wouldn't ride w/o it.


Posted by: Chief

Hi Joe,

&nbsp;

&nbsp;&nbsp;&nbsp;&nbsp; Sounds like you are a firm believer in FlyWheel weights. I agree that the '01 would be a perfect candidate for a FWW. I guess after the other mods I made/had done to my bike, the weight wasn't as noticeable. Bone stock I would say it's a must. Some of the riding I do sounds like your terrain. Sputtering around in 1st and 2nd although it's really not my favorite. Speaking of sputter, I can't seem to get rid of mine and it is fairly big on my bike. It only accelerates smoothly when I crank on it. I'm going to put in a dual stage reed being I've tried just about everything else and see what happens. As far as power loss or delivery My bike still has more than enough despite what others have to say about the weight.&nbsp;

&nbsp;

Joe Chief&nbsp;&nbsp;


Posted by: RM_guy

Chief,
Remember when we rode last week I said I tried a hotter plug in my bike? Well It did help with the spooge I still got some but the bike ran smother off the bottom. I never wind it out in the tight, nasty, rocky 1st gear crap (with no FWW, BTW) so a hotter plug seems to do the trick.


Posted by: Chief

Would you please knock it off w/ the STINKIN flywheel weight comments already!!!!!!!! :flame:

I'm developing a complex. :o

BTW isn't the BR9 a colder plug than a BR8?&nbsp;

Don't make me look through my files.

You been getting my e-mails? Seems I'm putting a lot of effort forth yet you give me no response.&nbsp; :confused:

&nbsp;

&nbsp;


Posted by: RM_guy

Quote:
Originally posted by Chief
...BTW isn't the BR9 a colder plug than a BR8?&nbsp; ...
Well crap. You're right. When ever I over think something I always get screwed up :confused: My bike must have been running better because the temp was cooler, and of course no stinking flywheel weight . I guess I need to go buy a BR7ES !!!


Posted by: brentl

Hello to all!....How much would you guys add to an 01 RM250 for MX only.
Looking to reduce wheelspin when leaned over not give up too much when launching fron short jumps.
Bike is stock.......weight choices are 7,9. or 11 oz.


Posted by: Bazooka Joe

Chief,

Yes, I'm a believer in the FWW. Riding w/o one is doing it the hard way, at least for trashers like me. Fast guys can get by w/o one, but they do several things differently than me, such as ride faster.

A 9 is indeed colder than 8, and the switch is not likely to reduce the spooge. I ran Champion RN3's w/ good results.

I had the Boyesen Power Reeds in the 01, and they made a noticeable difference. And, I had a Bill's pipe, which did a lot to improve the upper power (stock porting). Also, I had the 1/2 step leaner needle (look in the manual for p/n). This seemed to make the jetting pretty good. The air screw setting needed to be changed for the temp/humidity, but so does every other bike. When you have it set right, you will know from the amount of choke your bike needs to start when cold.


Posted by: Bazooka Joe

BrentL,

According to the Steahly catalog's guide, you would want a 7oz for most MX applications, or a 9oz for a Novice MX.


Posted by: Chief

Quote:
Originally posted by Chief
I think whoever wrote that was just voicing their thoughts. All depends on the bike, rider, and terrain. In my case I would have gone heavier than the 13 I put on. That would only put me up to 15 oz, the max they offer for my bike. I think my bike would work fine mx w/ the 15 oz. Then again I ride woods.

Joe Chief


Ok so now all of a sudden I have a thirteen oz on the bike instead of the 11 oz. And now Steahly makes a 15 oz. Maybe this is just a bad dream. :thumb:

I to top it off my delete button seems to be malfunctioning.

Maybe I'll take it off and weigh (no delete button) it just to make sure.

It's been awhile since this post started and just to clear things up I have the 11 oz although they do offer a 13 oz as well.

Man, I never realized how important that delete button was&nbsp;

Looks like maybe cheezwhiz down there.....


Posted by: Chief

Hey Bazooka Joe,

&nbsp;

&nbsp;&nbsp;&nbsp;&nbsp; I think I talked to you a while back about the champion plugs, bill's pipe, reeds, and FWW and needle. I have the next fatter needle on and it seems to be ok with the slide cut 1 mm. Not sure but I think the RN3 equals the BR8, but the champion plugs get hotter as the number goes up, unlike the NGK. I think the heat displacement of the plug might affect knock/detonation more than spooge. The a.s. does make a big difference. When I start the bike cold I have to&nbsp;push the choke off immedeately due to the high idle, so I guess the jetting is ok.&nbsp;

&nbsp;

&nbsp;&nbsp;&nbsp; Looking back on the last few months, I have a lot more fun and feel more confident/less tired on the bike, and wheelies are no longer much of a gamble, so I guess the weight made a considerable difference. I'm hoping different reeds will smooth out the sputter since nothing else has.

&nbsp;

RM Guy, maybe we can meet up at MX 573 in Montrose before the snow falls. I have to glue new grips on, put a kill button on, and replace my throttle cable before I ride again though

Joe Chief

&nbsp;

&nbsp;


Posted by: brentl

Thanks Joe .....I looked at the website and did not notice.....is this a discussion in the web page or on paper ...just curious as th where it is.


Posted by: RM_guy

Quote:
Originally posted by Chief
...RM Guy, maybe we can meet up at MX 573 in Montrose before the snow falls...
Probably not bud I think my last ride for the season will be on the 19th at Paragon. I might make it out once more but I doubt it. I put on a new IRC M5B yesterday and am stoked to try that thing out. The knobs are massive


Posted by: Dist1740b

My 10 oz. is on and It really smooths things out.
How much? I would need them side by side with and without the weight.
I go with The dual stage reeds,
I love the "Crack the throttle and clear a log without the worry of flipping it"
SX "A" riders tell me "Yeah but those reeds take away from the topend"...
In the woods, I am rarely up there and for $30.00 !
http://www.snakeranch.net/crwoods.jpg


Posted by: Bazooka Joe

Brentl,

The values I listed aren't on the web page, but are in the newest STeahly Off Road catalog. Call Steahly and ask for the catalog. 1-800-800-2363


Chief,

My 01 was sorta like that, too, (revving wild w/ the choke in cold temps). My general conclusion of the 01 idle circuit jetting, was that the carb would need to be jetted a bit rich at non-loaded idle speeds in order for the engine to carburerate cleanly at low rpms under power. Go by ear with that bike, I think. The 02 was not nearly as touchey in the idle circuit, but was very touchey about the main jet; Just one size too lean and the engine would detonate at 1/2 throttle.


Posted by: Chief

Rm Guy,

You're gonna love that M5B (better wear = less downtime= MORE RIDING!!!) Lemme know how many tankfuls you burn on it so I can compare it to the Maxxis 6001. I got about 12 rides or so out of the Maxxis.

Chief



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