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Buell Motorcycle Forum » XBoard » Buell XBoard Archives » Archive through July 13, 2004 » FINAL XB 15 DYNO 118 FT-LBS « Previous Next »

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Easyrider
Posted on Tuesday, July 06, 2004 - 04:57 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

http://sc.groups.msn.com/tn/16/10/xb9r/c/1b5.jpg

Maybe MikeJ can post the dyno here...

This weekend I will be dragracing in the Street Twin class in drachten. see www.explosion.nl

look for ST 31 at

http://www.explosiondragracing.com/entrylistD2-2004.htm

Have fun guys...

Easy Rider
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Charley
Posted on Tuesday, July 06, 2004 - 06:53 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

graph
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Mikej
Posted on Tuesday, July 06, 2004 - 10:31 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)



A straight \ imagelink { } worked. Image too small though. Looks fun to ride in any case.
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Bud
Posted on Tuesday, July 06, 2004 - 12:31 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

http://www.buellforum.nl/misc.php?file=2543

gr,b
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Wyckedflesh
Posted on Tuesday, July 06, 2004 - 12:44 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

118lbs of TORQUE! with 112 at 2500!!!! Holy HANG THE HELL ON TO THE BARS BATMAN!
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Alex
Posted on Tuesday, July 06, 2004 - 01:22 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

I canīt see 118ftlbs/112hp @ 2500.
I see 118ftlbs @3850 and 102hp @5500. Obviously this engine runs out of air starting at around 4500rpm. Check Your heads and intake tract (especially the carb) on the flow bench.
Still a nice toy : )

Best regards
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Spyder12s
Posted on Tuesday, July 06, 2004 - 01:24 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

why cant I get in here ?
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M1combat
Posted on Tuesday, July 06, 2004 - 01:30 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

I think Mikel was saying 112Lbs/ft at 2500. I think his point was that this bike has a LOT of torque down low...

You're right though, it does look like it runs out of air... I wonder if that's the classic 45 degree problem creeping in or not. I wonder what it would do with stage III Nallin heads...

I also suspect that intake tract and filters. Doesn't seem to be enough volume in there if you ask me. Maybe the Dyno was done w/o them though?

I still say it doesn't breath well enough though. I was expecting about 125HP out of this.
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Charley
Posted on Tuesday, July 06, 2004 - 03:43 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

grafiek
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Johncr250
Posted on Tuesday, July 06, 2004 - 04:25 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

Nice dyno graph!

What are the engine specs again? (cams, compression)
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Blake
Posted on Tuesday, July 06, 2004 - 06:21 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

Wow, that is some serious down low power. Talk about effortless wheelies. Let us know how you do at the races.
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420at145mph
Posted on Tuesday, July 06, 2004 - 08:27 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

this is the black xb15 with the dual intakes?
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Wyckedflesh
Posted on Wednesday, July 07, 2004 - 01:39 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

I seriously wonder how it would deal with a down draft dual throat webber carb for say a toyota or datsun 1600 engine...work up a semi highrise manifold and bolt it on that way...
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Kaudette
Posted on Wednesday, July 07, 2004 - 04:14 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

Impressive but I don't like the crossover - not enough HP when the torque drops off the cliff... And I would expect when tuned that this engine should be more than capable of 125 hp...

Hold onto those handlebars!
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Easyrider
Posted on Wednesday, July 07, 2004 - 10:57 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

420at145mph, Yep it is.......

MikeJ, thanks for posting the graph

The problem is not the air (we will check Twice) but the fuell, it's emptying the carb.......
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Easyrider
Posted on Wednesday, July 07, 2004 - 11:02 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

At This Dyno we still have a wheel slip of 15% on the dyno
First we had 40% wheelslip, But when I was sitting on the back en pushing with my arms to the seeling very hard (still feel the pain) we still had 15% slip
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M1combat
Posted on Wednesday, July 07, 2004 - 11:04 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

LOL : ). That would certainly cause it as well. Maybe try a five gallon bucket of fuel poured over the top of the engine as you hit 4000?
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420at145mph
Posted on Wednesday, July 07, 2004 - 01:45 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

so what all is in this bike?
how much did it cost u to build?
it started out as a 12 right?
GOD DAMN I WANT 100RWP!!!!
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Easyrider
Posted on Thursday, July 08, 2004 - 03:11 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

420at145mph, www.bikehospital.nl is the builder, you should ask him... about the cost.. Things There are in

Heads are ported but ports are kept relative "small", slightly bigger valves.
compression 10.8:1 Red shift 585 cams
Honda 48mm CV carb of a VTR1000, a custom header with a twin inlet borla. We used Baisley valves , black daimond tulipstyle, multi angle.

some related topics with Pictures

http://www.badweatherbikers.com/buell/messages/32777/60871.html

http://www.badweatherbikers.com/buell/messages/32777/42632.html#POST259668

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Opto
Posted on Thursday, July 08, 2004 - 03:30 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

Very impressive! all I can say. That would be one wicked Buell.
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Alex
Posted on Thursday, July 08, 2004 - 03:54 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

420at145mph,
we normally get around 100 to 105rwhp with the following combination:
XB12, stock cams, heads ported keeping stock valves, optimized throttle body , FAST intake system, open exhaust. Thatīs it.
In some days I will know where a big bore XB9 will end.
Best regards.
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Wyckedflesh
Posted on Thursday, July 08, 2004 - 04:22 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

Easyrider, thats why I suggested the downdraft weber. If it flows enough fuel to feed a racing 1600 datsun or toyota it should feed enough fuel for this engine.
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Easyrider
Posted on Wednesday, July 20, 2005 - 04:19 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

Wyckedflesh, thanks for the tip:

http://www.oslracing.com/2005/Drachten/DSC_6978.JPG
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