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Search: Posts Made By: Yam2Yam2
Forum: Thumpers 06-15-2013, 01:19 PM
Replies: 43,585
Views: 8,281,283
Posted By Yam2Yam2
Dyno and Gearing info

Plotted some info when I was deciding to go/no go on mods.

The first chart is various dyno runs I found. The lower lines are stock bikes, and the upper lines are modded. Variations exist due...
Forum: Thumpers 06-14-2013, 08:03 PM
Replies: 43,585
Views: 8,281,283
Posted By Yam2Yam2
I have the FMF Megabomb, PowerCore 4, and the FMF...

I have the FMF Megabomb, PowerCore 4, and the FMF fuel controller. I am also running a 14t sprocket, not the 13t. I only street ride.

My bike has a ton more power right off idle. I can lug the...
Forum: Thumpers 04-27-2013, 06:36 PM
Replies: 32
Views: 2,642
Posted By Yam2Yam2
For comparison...

I tested my latest power mods on my WR250R. I have a modified FMF Powercore 4, a hacked-open airbox, and an FMF fuel controller. I'm geared up to 14 teeth on the countershaft, from 13t stock. ...
Forum: Thumpers 03-24-2013, 02:58 PM
Replies: 33
Views: 4,311
Posted By Yam2Yam2
Got some video of my bike, today. It's a bit...

Got some video of my bike, today. It's a bit windy, sorry about that. I have the recording volume set as it was for the DB meter. Some of you might have trouble cranking your playback volume high...
Forum: Thumpers 03-23-2013, 03:52 PM
Replies: 33
Views: 4,311
Posted By Yam2Yam2
Went for a short freezing ride today, with the...

Went for a short freezing ride today, with the 12" x 12" section in.

If I get decent power out of this, I've succeeded. As others have noted with the PC4, idle is louder than higher revs. Once...
Forum: Thumpers 03-21-2013, 02:42 PM
Replies: 43,585
Views: 8,281,283
Posted By Yam2Yam2
I have a 28" inseam. The bike is a challenge...

I have a 28" inseam. The bike is a challenge until you get used to it. Don't try to catch yourself on the downhill side!

I use a footpeg to get on and off the saddle.
Forum: Thumpers 03-21-2013, 02:27 PM
Replies: 33
Views: 4,311
Posted By Yam2Yam2
You're going to wait a long time...:tough

You're going to wait a long time...:tough
Forum: Thumpers 03-20-2013, 05:37 PM
Replies: 33
Views: 4,311
Posted By Yam2Yam2
Well, guys, I've chopped the insert down to 12" x...

Well, guys, I've chopped the insert down to 12" x 12".

It's a bit louder now, but is still taking all of the sharp snap off the exhaust pulses. Loud enough that I won't be going WOT in the...
Forum: Thumpers 03-17-2013, 07:09 PM
Replies: 33
Views: 4,311
Posted By Yam2Yam2
It's just slid into the Powercore. The spark...

It's just slid into the Powercore. The spark arrestor keeps it in place, and it uncoils, so it doesn't rattle.
Forum: Thumpers 03-17-2013, 02:46 PM
Replies: 33
Views: 4,311
Posted By Yam2Yam2
That't the anti-tailgating feature! Also...

That't the anti-tailgating feature!

Also works on July 4...
Forum: Thumpers 03-16-2013, 01:18 PM
Replies: 33
Views: 4,311
Posted By Yam2Yam2
Well, I couldn't wait, I went for a short ride. ...

Well, I couldn't wait, I went for a short ride. I decided that the packing was too quiet, so I clipped off 4" length from the header pipe end, and I took out 6" width from the interior. This makes...
Forum: Thumpers 03-16-2013, 11:30 AM
Replies: 9,412
Views: 1,628,584
Posted By Yam2Yam2
For street use, I disagree:...

For street use, I disagree: http://advrider.com/forums/showthread.php?t=869324
Forum: Thumpers 03-10-2013, 12:56 PM
Replies: 33
Views: 4,311
Posted By Yam2Yam2
I tried this in my Two Bros on my SV650, but...

I tried this in my Two Bros on my SV650, but couldn't get twists straight enough to get down the muffler! I think this is probably a better option for power, though.
Forum: Thumpers 03-10-2013, 12:04 PM
Replies: 33
Views: 4,311
Posted By Yam2Yam2
Well, the results were a roaring, errr-a...

Well, the results were a roaring, errr-a whispering sucess. With the raw FMF Megabomb feeding into an FMF PC4, I'd have gotten a ticket just idling at the side of the road.

With the hardware...
Forum: Thumpers 03-09-2013, 07:49 PM
Replies: 33
Views: 4,311
Posted By Yam2Yam2
Easy way to quiet any muffler

Hey, guys and gals.

As have many of you, I've been modifying mufflers for more power, and in three cases, modifying for less noise. I think I've hit on the easiest mod, while still keeping power...
Forum: Thumpers 09-09-2012, 12:45 PM
Replies: 43,585
Views: 8,281,283
Posted By Yam2Yam2
Yes. Did a 4-lane highway run today. 65-75 mph...

Yes. Did a 4-lane highway run today. 65-75 mph with medium winds. Bike loves it. Still running out of HP, but had no problems keeping up with and passing traffic. Did a LOT of WOT running, MPG...
Forum: Thumpers 09-08-2012, 03:07 PM
Replies: 43,585
Views: 8,281,283
Posted By Yam2Yam2
No one will care about this post.

Because I'm riding a WRr 100% on the street (not by choice). But-I put a 14t sprocket on today, and am thrilled and surprised by the change.

I've mostly been puttering around on backroads, and...
Forum: Thumpers 08-03-2012, 10:26 PM
Replies: 43,585
Views: 8,281,283
Posted By Yam2Yam2
Stock exhaust (w/ mild mods) Sound Check

Recorded how my exhaust sounds, wanted to know if it was obnoxious to others. It's actually not much louder than the tire noise! I did passes at minimal throttle, all the way up to full throttle...
Forum: Thumpers 08-03-2012, 10:18 PM
Replies: 43,585
Views: 8,281,283
Posted By Yam2Yam2
Stock exhaust (mild mods) sound check

http://www.youtube.com/embed/QJJlXH_Y7UY
Forum: Thumpers 08-03-2012, 07:13 PM
Replies: 43,585
Views: 8,281,283
Posted By Yam2Yam2
Lead shot to damp bar vibration

Just wanted to post quick feedback on my latest mod. I'm riding a stock-tired, stock-geared WRr on the street, and my hands go completely numb after about an hour. Today I did my first oil change,...
Forum: Thumpers 07-21-2012, 09:18 PM
Replies: 43,585
Views: 8,281,283
Posted By Yam2Yam2
What Broke, Well, I am talking seat of the...

What Broke,

Well, I am talking seat of the pants on the EXUP, so I could be wrong. I'm certain that I can run a gear higher, which I appreciate, cause I don't want to annoy the neighbors. It...
Forum: Thumpers 07-21-2012, 06:39 PM
Replies: 43,585
Views: 8,281,283
Posted By Yam2Yam2
I'm very late to the party... :(

Hi, all! I've made it to page 200, just barely into 2009, so I'm sure all of you have heard this over and over. Please forgive me if this has been covered, but it seems most people went for more...
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