Idea I have had but never seen attempted - Page 2

WaGigKPN · 10-31-2012, 12:30 PM

Do we want to make a PNWriders franken bike? lol!

dragracer1951 · 10-31-2012, 12:30 PM

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

RedKat600 · 10-31-2012, 12:33 PM

Originally Posted by Xmxer

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.

shelbyguy · 10-31-2012, 12:44 PM

Originally Posted by shelbyguy

answer-

husaberg fs570 with big bore

Originally Posted by shelbyguy

the big bore 570 motor will make damn near same hp +/- 15hp, chances are same if not more tq

(than a 600f4i motor)

Originally Posted by RedKat600

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....

WaGigKPN · 10-31-2012, 01:13 PM

Originally Posted by shelbyguy

^^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...

mcjunky · 10-31-2012, 01:14 PM

Originally Posted by shelbyguy

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?

Avboden · 10-31-2012, 01:16 PM

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.

mcjunky · 10-31-2012, 01:22 PM

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?

WaGigKPN · 10-31-2012, 01:28 PM

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...

mcjunky · 10-31-2012, 01:33 PM

I think a parallel twin like a ninja 650 would be a good fit, try and keep it at least a little slim!

mcjunky · 10-31-2012, 01:45 PM

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.

http://www.youtube.com/watch?v=8rLqmV19TZg

infidel · 10-31-2012, 02:07 PM

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!

shelbyguy · 10-31-2012, 02:09 PM

Originally Posted by mcjunky

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

Avboden · 10-31-2012, 03:00 PM

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.

torque monster · 10-31-2012, 03:00 PM

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.

RC51 · 10-31-2012, 04:50 PM

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

Something kinda like this tlr:

shelbyguy · 10-31-2012, 06:08 PM

Originally Posted by RC51

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?

Avboden · 10-31-2012, 06:17 PM

Originally Posted by shelbyguy

How rad is that?

pretty rad

Willow · 10-31-2012, 06:53 PM

Originally Posted by shelbyguy

How rad is that?

Originally Posted by Avboden

pretty rad

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

Mitch F · 10-31-2012, 08:17 PM

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.


10-31-2012, 12:30 PM	#21
WaGigKPN Peg Dragger Joined: Mar 2012 From: Gig Harbor, WA I Ride: 2002 Honda VFR800	Do we want to make a PNWriders franken bike? lol! __________________ Follow PNW Riders on Facebook and Twitter


10-31-2012, 12:30 PM	#22
dragracer1951 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 __________________ Follow PNW Riders on Facebook and Twitter


10-31-2012, 01:16 PM	#27
Avboden Moto2 Contender Joined: Oct 2007 From: from Wa, living on Grenada (island) I Ride: 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. __________________ Follow PNW Riders on Facebook and Twitter


10-31-2012, 01:22 PM	#28
mcjunky Railer 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? __________________ Follow PNW Riders on Facebook and Twitter


10-31-2012, 01:28 PM	#29
WaGigKPN Peg Dragger Joined: Mar 2012 From: Gig Harbor, WA I Ride: 2002 Honda VFR800	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... __________________ Follow PNW Riders on Facebook and Twitter


10-31-2012, 01:33 PM	#30
mcjunky Railer 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! __________________ Follow PNW Riders on Facebook and Twitter


10-31-2012, 02:07 PM	#32
infidel Chicken Strips Joined: Sep 2010 From: Hood River, OR I Ride: 2006 Hayabusa (for sale)	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! __________________ Follow PNW Riders on Facebook and Twitter


10-31-2012, 03:00 PM	#34
Avboden Moto2 Contender Joined: Oct 2007 From: from Wa, living on Grenada (island) I Ride: 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. __________________ Follow PNW Riders on Facebook and Twitter


10-31-2012, 03:00 PM	#35
torque monster Permit 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. __________________ Follow PNW Riders on Facebook and Twitter


10-31-2012, 04:50 PM	#36
RC51 Streetfighter Joined: Mar 2008 From: Kingston 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: __________________ Follow PNW Riders on Facebook and Twitter


10-31-2012, 08:17 PM	#40
Mitch F Streetfighter 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. __________________ Follow PNW Riders on Facebook and Twitter

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