Drunken Monkey, so you say you want a superlight 60-70hp bike? Check it . . .
http://hellforleathermagazine.com/2008/12/completed-tucson-bt550-superle.html (http://hellforleathermagazine.com/2008/12/completed-tucson-bt550-superle.html)
(http://hellforleathermagazine.com/galleries/images/bt550_complete_1.jpg)
Well..... OK fine if I had to I'd ride it...... like the hounds of hell being pursue by the fiery inferno though the canyons of the netherworld! Ok, it's good.
Oh, to weigh 140 lbs. - like I did in the 7th grade. :'(
LA
[bow_down] [bow_down] [bow_down]
Now, I figure I can probably get enough to buy it if I sell one of my kids.
Quote from: Drunken Monkey on December 20, 2008, 07:40:36 PM
[bow_down] [bow_down] [bow_down]
Now, I figure I can probably get enough to buy it if I sell one of my kids.
You can make more. Do what you gotta do.
What fork is that?
Quote from: Slag on December 20, 2008, 08:00:03 PM
What fork is that?
Not sure. Looks like a high zoot racing fork with the billet bottoms and remote resivoirs.
Ahhh..Aprila 550 twin. This motor sounds wicked with an open exhaust, raced with a couple in supermoto.
I think this will become more and more common. There's already an rs125 honda with a CRFx250 single. Roland Sands has been developing road racing bikes converted from current MX bikes, similar to supermoto, but different geometry, and bodywork. And it's pretty easy to make 60 to 70hp with the bigger bikes like the 550 and the KTM 560 single. Heck, even the boys with $$$ are making 60+ with a 450. My stock ktm 450 with basic bolt-ons and jetting made 50hp with 220 lbs, and would pull the front on the first 4 gears...
Change the geometry of an MX bike with shorter forks and swingarm/shock adjustment, add bodywork, including tank and seat, and you have the makings of a very capable "schoolboy" road racer that can be run by a full grown man and not just a 130lb 7th grader. (although the 130lb 7th and 10th graders i've raced against were F'ing fast)_
It would be cool to see classes that utilized this format as it would open up a door to riders with motocross experience and bikes, that don't have the dough to have a dedicated road racing bike.
Quote from: Slag on December 20, 2008, 08:00:03 PM
What fork is that?
I'ts def. a paioli 8) with the obvious stickers... and those beautiful berringer brakes!
Maybe this will give you an idea of the sound of that motor, this one with a Sil setup. http://www.youtube.com/watch?v=HPTWHAdTiJ8&feature=related (http://www.youtube.com/watch?v=HPTWHAdTiJ8&feature=related)
That bike has the same power to weight ratio that I do ;D
Nice bike, but there's no way it's 214# - maybe 314.
Quote from: Norm on December 21, 2008, 08:11:24 AM
Nice bike, but there's no way it's 214# - maybe 314.
"In an independent weigh-in conducted by French magazine Moto Journal, using a calibrated scale, the Tucson BT550 came in at just 97kg (214lbs)"
Quote from: Norm on December 21, 2008, 08:11:24 AM
Nice bike, but there's no way it's 214# - maybe 314.
then lots of people are lying more than the standard manufacturer "error" for bikes. The Tucson website is pretty detailed about the build and they discuss the nervousness they had taking it to certified scales through MotoJournal (French moto mag online). Goal was allways sub 100 kg. Apparantly weighed with all fluids except gas (my French is very rusty).
You can find their site and the motojournal site right off links from the initial post. Pretty cool stuff.
I read the info on their site and they seem pretty certain about the weight, but by the time you figure basic things like forks, wheels, tires, etc., 214 just seems unobtainable. Of course, I've been wrong before (don't tell my wife).
Hopefully the video they're promising will be up soon. I'd like to see them roll it up on the scale. How the hell do you make something that weighs half a standard street-legal sportbike? Half!
Quote from: Roscoe on December 20, 2008, 08:51:52 PM
I'ts def. a paioli 8) with the obvious stickers... and those beautiful berringer brakes!
I thought that was just a sponsor sticker [bang] Never occurred to me that it was the suspension manufacturer [laugh]
That KTM sounds awesome.
I'm pretty skeptical of the weight as well. I've seen SM's down close to that, but with a lot of Ti and carbon, and of course no bodywork and the related mounts. The SXV in stock form tips the scales at 271lbs, so they would have to be pretty creative with the weight of that chassis to get 214lbs.
Here's the RSD bikes. I saw the black one at the IMS and it was beautiful. [moto]
http://www.rolandsands.com/images.html (http://www.rolandsands.com/images.html)
Quote from: porschaholic on December 21, 2008, 09:54:34 AM
That KTM sounds awesome.
That's not a KTM, it's the SXV 550, the same motor as the road racer in the first post. I've been behind one that had A twin GPR exhaust and it sounded like nothing I've ever heard before. [evil]
The engine with throttle bodies weighs 72 ib
Wanna race? [evil]
(http://thekneeslider.com/images/tssrs500.jpg)
http://thekneeslider.com/archives/2008/10/15/tss-rs500-2-cylinder-2-stroke/ (http://thekneeslider.com/archives/2008/10/15/tss-rs500-2-cylinder-2-stroke/)
I was looking at the 2008 RS250 Honda when you posted that 500. That bike sounds like a wickedly fun way to scare the poo out of yourself :o
The RS250r is stated as having 92ps (Hp?) with 101kg or 222lbs, and its a two smoke, so Id really like to know how they came up with 214lbs.
The power to weight ratio is not exceptional, it would need 90hp for that.
:o That thing is sick! I've been thinking of building a roadrace conversion SXV for a while like the 450 Motos. It would be nice to have unlimited $$, and do what they did but since I don't, I'm thinking of doing the conversion. Change suspension, add bodywork, and go racing.
There are lots of people building the 450 Motos now and WERA has a class for them. I fell in love with those the minute I first laid my eyes on them at Laguna in '07. The only problem I have is I would like to see how the motors hold up and I would like to see the concept proven a little bit more first...especially chassis set up. The swingarm angle is awfully flat. There is a Spanish company making kits now that retail for approx. $5k that just need a donor 450MX bike. BeOn Automotive is the company and the kits look amazing. http://www.beonautomotive.es/fotos_motos_25.html Check out this link for photos of their bikes.
Making singles into road racers is far from a new concept. Putting singles into GP chassis has been done for a long time by lots of people. BareBones racing has done a lot of them. There is a European racing series dedicated to them. I race against a guy who has a 450 Supersingle. He put a 450 in a Honda RS125 chassis. He tweaked the motor to get somewhere around 65 HP, and this thing is wicked fast.
It will also be cool to see what the OEMs start producing on this theme. KTM is supposed to be making the RC4, and there have been several rumors of others. As stated before there is the Moriwaki Honda which has a race series for youth with big $ payouts.
Here's one pic from that website that I posted. If you like this pic, go to the website for many more.
(http://i44.tinypic.com/v4z62s.jpg)
The 550 engine is available $3,500
http://www.rsvr.net/shop/custom.asp?recid=11 (http://www.rsvr.net/shop/custom.asp?recid=11)//
My dream bike is a short wheelbase monster styled bike that weighs 300-325# with a torque output of 100 ft/pds.
Quote from: Roscoe on December 20, 2008, 08:39:51 PM
Ahhh..Aprila 550 twin. This motor sounds wicked with an open exhaust, raced with a couple in supermoto.
I think this will become more and more common. There's already an rs125 honda with a CRFx250 single. Roland Sands has been developing road racing bikes converted from current MX bikes, similar to supermoto, but different geometry, and bodywork. And it's pretty easy to make 60 to 70hp with the bigger bikes like the 550 and the KTM 560 single. Heck, even the boys with $$$ are making 60+ with a 450. My stock ktm 450 with basic bolt-ons and jetting made 50hp with 220 lbs, and would pull the front on the first 4 gears...
Change the geometry of an MX bike with shorter forks and swingarm/shock adjustment, add bodywork, including tank and seat, and you have the makings of a very capable "schoolboy" road racer that can be run by a full grown man and not just a 130lb 7th grader. (although the 130lb 7th and 10th graders i've raced against were F'ing fast)_
It would be cool to see classes that utilized this format as it would open up a door to riders with motocross experience and bikes, that don't have the dough to have a dedicated road racing bike.
Yeah it's definitely possible to make those numbers, my 250 sm is making 40 at the wheel but it's far from stock. No idea on the weight though, its a crf250r and the site claims 204 but I'm sure that's without fluids.