Boyesen Dual Stage Power reeds

**Thu May 10, 2007 4:21 pm » Post: #1 » Download Post**

Good Day All! I was wondering if anyone has tried the Boyesen Dual stage power reeds on their MC21/28? If so, did you also rejet carbs and lean out a bit (because of the higher air/fuel velocity) ? I am wanting to try out so any feedback would be appreciated!

Thanks
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FILOLI - Fight, Love, Live

**Thu May 10, 2007 8:05 pm » Post: #2 » Download Post**

I'm trying it now...I will let u know all the detail...

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1996 HONDA RS250
1995 MC28 NSR250 SE red/white/green
1994 MC28 NSR250 sp W/ RS250 engine

**Thu May 10, 2007 8:24 pm » Post: #3 » Download Post**

Hello hung! It appears to be the standard reeds and not the dual stage which you don't have to use the reed stoppers, correct? anyhow let me know how those workout as I am in need of new reeds.

Thanks !
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FILOLI - Fight, Love, Live

**Thu May 10, 2007 10:07 pm » Post: #4 » Download Post**

Are these reeds available for the MC11 too? Replacing the reeds was top of by priority list....

All the best

Phil

**Thu May 10, 2007 10:53 pm » Post: #5 » Download Post**

oops, that would be the ns250 I bet.
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FILOLI - Fight, Love, Live

**Fri May 11, 2007 7:00 am » Post: #6 » Download Post**

Right on the button, MC11 is the NS250R, as listed in the model history....

Makes the same power as standard as the MC16.......

I was hoping some decent reeds would give me a bit more power as an easy bolt-on

All the best

Phil

**Fri May 11, 2007 3:12 pm » Post: #7 » Download Post**

In my experience, reeds never give a noticeable hp increase. You usually just "tweak" the power delivery characteristics by using different materials.
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Andy.
NSR-WORLD.COM

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**Fri May 11, 2007 3:32 pm » Post: #8 » Download Post**

Hi Andy, hp is not what I am trying to achieve but better throttle response with the dual stage reeds as opposed to the standard w/reed stop setup. Have you tried the boyesens?

Thanks
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FILOLI - Fight, Love, Live

**Fri May 11, 2007 3:36 pm » Post: #9 » Download Post**

Tyga have some graphs on their site of their reeds back to back with stock ones which show increases though most of the range.

I dont have any graphs of Boyesen reeds on an NSR though.
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If I have to take the carbs off once more...

**Fri May 11, 2007 3:47 pm » Post: #10 » Download Post**

Thanks Stephen, I am going to try the boyesen dual stage, for starters I can get them in 2-3 days(shipped from Ca.) Tyga stuff has always taken 4-6 weeks for my shipments. (good stuff for the MC's though)
I will post up with my results.

Thanks!
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FILOLI - Fight, Love, Live

**Fri May 11, 2007 4:39 pm » Post: #11 » Download Post**

Hi,nsr250racer
Don't know what is dual stage reed about, do you have some more infor of that, or you have pic....i'm interesting..
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1996 HONDA RS250
1995 MC28 NSR250 SE red/white/green
1994 MC28 NSR250 sp W/ RS250 engine

**Fri May 11, 2007 5:43 pm » Post: #12 » Download Post**

Here is the shortcut to boyesen, dual stage reeds which do not use the reed stopper plates (there are actually 2 pieces of fibre on each side of reed valve and 1 plate to mount on bottom side off reed setup.

http://www.boyesen.com/cwo.php?store=boyesen&id=4&year=&manufacturer_id=4&vehicle_name=NSR+250&submit.x=36&submit.y=34
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FILOLI - Fight, Love, Live

**Sat May 12, 2007 11:14 am » Post: #13 » Download Post**

yea,,,this is what I have ..and mine is carbon firber reed...
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1996 HONDA RS250
1995 MC28 NSR250 SE red/white/green
1994 MC28 NSR250 sp W/ RS250 engine

**Sat May 12, 2007 8:31 pm » Post: #14 » Download Post**

I've back to backed the Boysen's (dual stage), the Tyga carbons and the std ones (yes I do love removing my carbs, it's the best bit) and IMHO (no dyno proof, just how it felt) the carbon reeds were best and seemed to crispen the throttle quite a bit.
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Please do not PM me technical questions, if you can't find it on the Forum start a thread

**Sun May 13, 2007 12:37 am » Post: #15 » Download Post**

Hi Fonty, thanks for the reply I was looking for... One question though, You liked the carbon best, Tyga or Boyesen(I believe they have them in carbon)

Cheers
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FILOLI - Fight, Love, Live

Boyesen Dual Stage Power reeds

Boyesen Dual Stage Power reeds

are those the standard?

MC11 ...?

Stock vs. Dual Stage (Boyesen)

Thanks!

here you go...

Tyga or Boyesen carbon?