CR250 ignition for the 500 question (pic)

aloha450x · Post by **aloha450x** » July 16th, 2008, 6:13 pm

100hp honda wrote:
ugly1171 wrote:
100hp honda wrote:packard told me yesterday the whole '01 cr250 setup works real sweet. anybody know what that '01 cr250 flywheel weighs ?
I've just fitted this set up. Had to machine the back of the stator plate to make it fit. So that dispels the myth that is a easy fit/straight swap!
As for the weight of the flywheel, i can tell you its noticably lighter. If i can borrow a flywheel puller this weekend, i'll take it off & weigh it for you.
Ugly
sweet man. did you find the whole system on ebay from a blown up bike or what ? was the stator machining easy for a machine shop or who did it ? definatly weigh the 250 and 500 flywheels because i wanted to know this answer for a long time

look back 8 post and you will see the diferenc in weights

MICK · Post by **MICK** » July 16th, 2008, 7:05 pm

He's talking about the '01. Probably not any different than the '92? My Flywheel is a little lighter than what you posted. At 20.4oz or 578 grams I'm sure that's just the difference between our scales. Or maybe yours had some grease on it

100hp honda · Post by **100hp honda** » July 16th, 2008, 7:17 pm

aloha450x wrote:
100hp honda wrote:
ugly1171 wrote: I've just fitted this set up. Had to machine the back of the stator plate to make it fit. So that dispels the myth that is a easy fit/straight swap!
As for the weight of the flywheel, i can tell you its noticably lighter. If i can borrow a flywheel puller this weekend, i'll take it off & weigh it for you.
Ugly
sweet man. did you find the whole system on ebay from a blown up bike or what ? was the stator machining easy for a machine shop or who did it ? definatly weigh the 250 and 500 flywheels because i wanted to know this answer for a long time
look back 8 post and you will see the diferenc in weights

i hear what your saying brotha and thnx for your info posted. im doubting '92 cr250 flywheel is the same as '01 and might not interchange on the stators but maybe they do. basically at this point in time, all im interested in knowing is the weight difference between '01 cr250 flywheel vs '92-'01 cr500 flywheel

dannygraves · Post by **dannygraves** » July 16th, 2008, 8:34 pm

you guys are looking at the weight thing all wrong...the 250 flywheels are smaller in diameter, so even if they weighed the same the 500 one would hold more inertia. I can see if my pot dealing buddy will let me use his scale and I could weigh the '03 flywheel.
In '97 the cr250 went to a digital ignition, so everything was redesigned... I highly doubt the old analog system will run the same flywheel, but I'd be willing to bet my '03 flywheel is the same. I will also measure the radius and see how much geometry, algebra and trig I remember and see if I can figure how the weight will make a difference.

britincali · Post by **britincali** » July 16th, 2008, 8:38 pm

dannygraves wrote:you guys are looking at the weight thing all wrong...the 250 flywheels are smaller in diameter, so even if they weighed the same the 500 one would hold more inertia..

dannygraves · Post by **dannygraves** » July 16th, 2008, 9:18 pm

britincali wrote:
dannygraves wrote:you guys are looking at the weight thing all wrong...the 250 flywheels are smaller in diameter, so even if they weighed the same the 500 one would hold more inertia..

yeah, one of the reasons I think the steahly weights are a stupid design, they should be shaped like an hour grass and thickest on the outer edges so you get as much inertia with as little additional rotating mass as possible.

aloha450x · Post by **aloha450x** » July 17th, 2008, 1:48 am

danny you are one smart mf'er. didnt even think of that but you are 100% correct

http://www.youtube.com/user/500bigbore · Post by **Roostius_Maximus** » July 17th, 2008, 6:19 am

the stealthy is also a thread bender, if its mass was hung by the center of its attatchment it wouldnt be as bad, but stealthy relied on the flywheel to center the weight, so any adjustment of the retaining screw actually creates an eccentric and possibly remainng vibrationless because of its dampering effect, still is on a missalignment that will at high rpm make the thread flex as the weight tries to centrifically true itself.

I'm considering if i want to use a weight in the '91 engine (had repaired the threads after removing the stealthy, but found it nice on the hillclimbing), that i would use a small od flywheel, and create a ring to buildup the o.d. of the flywheel to match factory 500 size, and rebuild the trigger pickup.

blownbillybob · Post by **blownbillybob** » July 17th, 2008, 10:13 am

dannygraves wrote:yes, the 250 and 500 coils for '87+ are the same resistance.

so do you have to use the 250 stator and flywheel on the 89' and on bikes or can you just plug in the CDI?
why do the 89' 250s have 2 coils and the 500s have 1?
which is better the 2 coil setup or the round coil?

dannygraves · Post by **dannygraves** » July 17th, 2008, 10:32 am

'86 is the only year that only requires a 250CDI, from '87+ all the 500s went to their own setup and the only part that can be used is the ignition coil. the flyhweel and stator has to be swapped to match the cdi.

ugly1171 · Post by **ugly1171** » July 17th, 2008, 12:59 pm

sweet man. did you find the whole system on ebay from a blown up bike or what ? was the stator machining easy for a machine shop or who did it ? definatly weigh the 250 and 500 flywheels because i wanted to know this answer for a long time

I had to buy it all in stages, got the flywheel, stator plate & all the loom first. Brought a CDI from an (allegedly) 2001 cr 250. The cdi for the power jet carbs don't work without a PJ carb connected. (or maybe they do & i brought a faulty one) Finally got a non PJ CDI & i've got a spark at the plug.
The 250 flywheel is smaller in diameter as stated elsewhere in this thread.
I machined the stator plate very carefully with a Bremmel.
I'll try & post some pics at the weekend. Oh yeah, the 250 ignition cover doesn't fit either! LOL

Ugly

ugly1171 · Post by **ugly1171** » July 24th, 2008, 2:07 pm

Sorry about the delay.
1st picture shows the 250 flywheel & stator plate fitted with the 500 flywheel along side it.

The second shows why you can't use a 250 flywheel with a 500 stator plate assembly.

Ugly

100hp honda · Post by **100hp honda** » July 24th, 2008, 5:41 pm

ugly1171 wrote:Sorry about the delay.
1st picture shows the 250 flywheel & stator plate fitted with the 500 flywheel along side it.

The second shows why you can't use a 250 flywheel with a 500 stator plate assembly.

Ugly

thnx man that bitchin information. thats '01 cr250 hardware right ? do you happen to know what the weight difference was ? im for sure getting that setup for my machine. how does your bike run with it ?

ugly1171 · Post by **ugly1171** » July 27th, 2008, 1:04 am

I'm ashamed to say, due to a new job & other commitments, the bike is on the back burner at the minute so i've not ran it up yet, got to modify the fuel tank to clear the plug & cylinder head bracket. I just checked i had a spark at the plug.

Ugly

MICK · Post by **MICK** » July 27th, 2008, 9:46 am

I'd also really like to know your afterthoughts on this too...so make haste!

bwh998 · Post by **bwh998** » August 6th, 2008, 7:42 am

i have the stator plate and flywheel from a 95 cr250 right here, but it looks like everyone is using later model parts. i wonder if the older ones will work too.

MrDude_1 · Post by **MrDude_1** » September 4th, 2008, 11:36 am

So did this mod ever work out for you or what? its been 2 months, does she run?
I need to do SOMETHING.. i have basically no lights and the days are getting shorter....

dannygraves · Post by **dannygraves** » September 4th, 2008, 12:04 pm

for sure the '96 and older setups work great

ISBB · Post by **ISBB** » September 4th, 2008, 12:39 pm

Found this on fleabay.. Complete 02 setup for 150 bucks

If i wasnt buying bottom end parts and saving for a new carb and top end id be all over it hehe

http://tinyurl.com/6nvfe5

MrDude_1 · Post by **MrDude_1** » September 4th, 2008, 1:48 pm

ISBB wrote:Found this on fleabay.. Complete 02 setup for 150 bucks If i wasnt buying bottom end parts and saving for a new carb and top end id be all over it hehe

http://tinyurl.com/6nvfe5

could you post the whole link?

i cant use tinyurl at work.. heck, i have to use a php based forwarding proxy page just to bypass websense so i can see this forum.

lewisclan · Post by **lewisclan** » September 4th, 2008, 1:49 pm

http://cgi.ebay.com/ebaymotors/honda-cr ... 0290714303

MICK · Post by **MICK** » January 14th, 2009, 5:32 pm

I just bought this off DesertCR for $90 to my door.

It's a complete '94 CR250 ignition. The '94-'96 shared this equipment and now Honda has stopped production of the '93 system
so this ignition has replaced it as well. It's not digital like I had planned on, but I thought it would work well regardless. And for
the money can't complain if I don't like it...

Very excited to get my new present

hoofarted · Post by **hoofarted** » January 14th, 2009, 6:52 pm

Report back and let us know what a difference it made...

robertg · Post by **robertg** » January 14th, 2009, 7:30 pm

I just bought a complete 00-01 CR250 ignition, I hope it works good. I'm not going to sell my stock stuff until it's running right.

aloha450x · Post by **aloha450x** » January 14th, 2009, 7:45 pm

well as you all know my bike is almost done. and i am running this setup. i cant give you a comparsion until the 500af gets here in a couple weeks. but she started first kick after rebuild. she starts first kick cold and runs like a bat out of hell. i have a 91 motor with a 92 cr25o setup.

BannedCR500Riders.com

CR250 ignition for the 500 question (pic)