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Old 10-31-2012, 12:30 PM   #21
Railer
WaGigKPN's Avatar
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Joined: Mar 2012
From: Gig Harbor, WA
Blog Entries: 1

I Ride: 2000 BRP (XR650R)
Do we want to make a PNWriders franken bike? lol!

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Old 10-31-2012, 12:30 PM   #22
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Joined: Sep 2005
From: Bremerton

I Ride: 05 KTM 625smc, 03 Are See fiddy one, 05 DRZ470SM, 95 FZR1040, 69 Combat Commando Roadster, 73 Commando Interstate, 67 BSA B44, 71 BSA B50
This is my friend Manny from Canadia.
I chased him around Newfoundland fro a couple weeks on fire roads. FZ700 with YZ250 forks and a back wheel from a 500 two stroke 4 cyl Yamaha. This thing is absolutely ferocous
700cc Dirt Fazer


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Old 10-31-2012, 12:33 PM   #23
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Joined: May 2011
From: LaCenter, WA

I Ride: 2003 Copper SV1K
“ Quote:
Originally Posted by Xmxer View Post
There is no way to get near the power of an inline 4 with a single. And when you try your reliability will go right out the window. I ride quads in the dunes and have built so many big bore, ported, custom cammed, etc motors and just when they start to get fast they will blow up very quickly. I learned my lessons and put a GSXR fuel injected motor into my latest quad and let me tell you 160 HP is absolutely ridiculous offroad.
Erm, define power. Horsepower, no. Torque? Absolutely! CBR600 F4i only made 46 lbt ft at the CRANK. Husaberg 570 is at 42-43 ft lbs at the rear wheel stock so....pretty much the same if not more on a single.

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Old 10-31-2012, 12:44 PM   #24
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Joined: Apr 2008
From: lacey

I Ride: Aprilia Factory, 525SMR, DRZ400sm, and a gaggle of others
“ Quote:
Originally Posted by shelbyguy View Post
answer-

husaberg fs570 with big bore
“ Quote:
Originally Posted by shelbyguy View Post
the big bore 570 motor will make damn near same hp +/- 15hp, chances are same if not more tq

(than a 600f4i motor)
“ Quote:
Originally Posted by RedKat600 View Post
Erm, define power. Horsepower, no. Torque? Absolutely! CBR600 F4i only made 46 lbt ft at the CRANK. Husaberg 570 is at 42-43 ft lbs at the rear wheel stock so....pretty much the same if not more on a single.
^^this



lets not even get started on weight.

motor, cooling system....electronics....

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Old 10-31-2012, 01:13 PM   #25
Railer
WaGigKPN's Avatar
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Joined: Mar 2012
From: Gig Harbor, WA
Blog Entries: 1

I Ride: 2000 BRP (XR650R)
“ Quote:
Originally Posted by shelbyguy View Post
^^this



lets not even get started on weight.

motor, cooling system....electronics....
SINGLE CYLINDER...

Its purpose is not to be the best at anything...just to be what it is and how to accomplish it...

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Old 10-31-2012, 01:14 PM   #26
Railer
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Joined: Jun 2005
From: spokane

I Ride: Mille, kx250, kx500 SM, rd400, yz450
“ Quote:
Originally Posted by shelbyguy View Post
the big bore 570 motor will make damn near same hp +/- 15hp, chances are same if not more tq

(than a 600f4i motor)
So a big bore 570 is making over 80hp? What is that, 30hp over stock so over a 50% gain?

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Old 10-31-2012, 01:16 PM   #27
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Joined: Oct 2007
From: from Wa, living on Grenada (island)

I Ride: 1991 XR250L, 2007 BMW F800S, 1999 ATK 605 ESDS/SM
The Rotax 600cc single cylinder motor used by ATK and is popular in supermono racing can be built upwards of 90+HP spinning to absurd RPMs. There's even some crazy german fuel injection intakes for them.

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Old 10-31-2012, 01:22 PM   #28
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Joined: Jun 2005
From: spokane

I Ride: Mille, kx250, kx500 SM, rd400, yz450
You can pull 90+ out of a KX500 as well........on an extreme build that won't hold together long. Not to mention it's way lighter than any of the other lumps listed.

What do you have to do to get 80 outa the husaberg?

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Old 10-31-2012, 01:28 PM   #29
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Joined: Mar 2012
From: Gig Harbor, WA
Blog Entries: 1

I Ride: 2000 BRP (XR650R)
Goal would be to have something very reliable (IE.. HONDA lol) that is turn key and go!

also inexpensive in that you just need to buy a frame and motor then some home grown ingenuity to make it work...

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Old 10-31-2012, 01:33 PM   #30
Railer
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Joined: Jun 2005
From: spokane

I Ride: Mille, kx250, kx500 SM, rd400, yz450
I think a parallel twin like a ninja 650 would be a good fit, try and keep it at least a little slim!

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Old 10-31-2012, 01:45 PM   #31
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Joined: Jun 2005
From: spokane

I Ride: Mille, kx250, kx500 SM, rd400, yz450
Looks like a couple people have stuffed the kawi 650 twin into the aprilia sxv. Dead reliable, fuel injected and looks like it fits in there nicely.

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Old 10-31-2012, 02:07 PM   #32
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infidel's Avatar
 
Joined: Sep 2010
From: Hood River, OR

I Ride: 2006 Hayabusa
I think it sounds like a fun idea! I'd love to see it.

I've always thought an SV650 engine in a lightweight enduro bike would be an absolute kick in the ass! Narrower than an I-4, and more oomph in the middle.

Good luck!

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Old 10-31-2012, 02:09 PM   #33
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Joined: Apr 2008
From: lacey

I Ride: Aprilia Factory, 525SMR, DRZ400sm, and a gaggle of others
“ Quote:
Originally Posted by mcjunky View Post
So a big bore 570 is making over 80hp? What is that, 30hp over stock so over a 50% gain?
i know of 1.


id be willing to bet it makes near 70-75hp

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Last edited by shelbyguy; 10-31-2012 at 02:14 PM..
 
Old 10-31-2012, 03:00 PM   #34
Moto2 Contender
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Joined: Oct 2007
From: from Wa, living on Grenada (island)

I Ride: 1991 XR250L, 2007 BMW F800S, 1999 ATK 605 ESDS/SM
hey there's always BMW's 2WD F800 powered hillclimber :-P Fully tuned about 100HP and gobs of torque out of the twin.

As far as I know they only ran it once in competition, Chris Pfeiffer was supposed to ride it but got hurt before hand stunting so the builder (NOT a pro rider by anymeans) rode it to a 4th place finish in the european hillclimbing championships in whatever class it fit in.


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Old 10-31-2012, 03:00 PM   #35
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Joined: Jan 2011
From: Seattle, WA
This one is the bike Shelby speaks of - my 2011 Husaberg FS570/665 - 72.5hp 46.5ft/lb torque. She is strong and reliable. Can do it again for someone if they want to spend some coins. Needs nitrous and then we would get an easy 80hp.


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Old 10-31-2012, 04:50 PM   #36
Superbiker
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Joined: Mar 2008
From: Everett, WA

I Ride: Motorcycle
I think I would be easier to take a stock CBR and put longer forks on it.

Something kinda like this tlr:




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Old 10-31-2012, 06:08 PM   #37
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Joined: Apr 2008
From: lacey

I Ride: Aprilia Factory, 525SMR, DRZ400sm, and a gaggle of others
“ Quote:
Originally Posted by RC51 View Post
I think I would be easier to take a stock CBR and put longer forks on it.

Something kinda like this tlr:



Totally interesting.


How rad is that?

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Old 10-31-2012, 06:17 PM   #38
Moto2 Contender
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Joined: Oct 2007
From: from Wa, living on Grenada (island)

I Ride: 1991 XR250L, 2007 BMW F800S, 1999 ATK 605 ESDS/SM
“ Quote:
Originally Posted by shelbyguy View Post

How rad is that?
pretty rad

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Old 10-31-2012, 06:53 PM   #39
Streetfighter
Willow's Avatar
 
Joined: Oct 2006
From: Silverdale, Wa

I Ride: DRZ 400SM, 848evo
“ Quote:
Originally Posted by shelbyguy View Post


How rad is that?

“ Quote:
Originally Posted by Avboden View Post
pretty rad

Awwww heck, I'll say it again, Pretty rad!
So far my favorite in this thread

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Old 10-31-2012, 08:17 PM   #40
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Mitch F's Avatar
 
Joined: Jun 2006
From: The Ham

I Ride: every god damn day
If you really wanted stupid high RPM power that you can't use, buy one of these

http://www.atkusa.com/atk/%28S%28g2u...TK700620cc.pdf

Then it would be light and narrow too.

And if you want an I4 supermoto, just put some new suspension on a sportbike frame, not a sportbike engine in a sumo frame. You'd need to beef the sumo frame so much to handle the engine it wouldn't be worth the effort.

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