The Cafe/2Stroke/Single/Twin/Brit/Euro/Cool Bike Pic Thread - Page 1203 - Suzuki SV650 Forum: SV650, SV1000, Gladius Forums

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Old 12-23-2010, 10:09 PM   #12021
Boldor
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"Wheelie From Idle"



This what you need for wheelies-from-idle, right Bluey? To be dead honest with you all; I'm a frigg'n looser at controlled point-of-balance wheelies. After I bent two sub-frames of my brother's dirt collection in one day, I was known as the "Bike Flipp'n Kahnt". I'm no maestro of the dirt either. That doesn't mean I won't give it 100%, it just means think twice about lending me your prized possession.
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Old 12-23-2010, 10:22 PM   #12022
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More KTM without Black-Top



Available in hi-res if you reckon it'd be a good Wallpaper, Bluey.

http://www.topspeed.com/motorcycles/...ure264350.html
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Old 12-23-2010, 10:37 PM   #12023
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Old Fashioned Tonne???

On this......



Mildly touched or Fahknuckle? - you decide.

http://translate.googleusercontent.c...3Uq1aHZ9exF7mg
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Old 12-23-2010, 10:44 PM   #12024
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Re: The Cafe/2Stroke/Single/Twin/Brit/Euro/Cool Bike Pic Thread

Quote:
Originally Posted by RD350 View Post
I guess I agree that the XS650 motor is better looking ... in a British twin wanna-be kinda way.

But you also get a lot of extra weight for not a lot of extra HP with the XS.




Just givin' you hell, man. Of course it's a British twin wanna-be, it out Bonnie'd the Bonneville. It was a direct copy (made better) by Yamaha.

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Old 12-23-2010, 11:18 PM   #12025
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Re: The Cafe/2Stroke/Single/Twin/Brit/Euro/Cool Bike Pic Thread

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Originally Posted by Boldor View Post
...I like the kind of wheelie that's hard not to pull because you've exited the turn right in the meat of the zone and the front begins to lift just 'coz. Point of balance wheelies are difficult to do and require talent - no question. But I like the wheelies the bike pulls just 'coz it's just hit Millenium Falcon warp III and you wanna make sure you're not pointed at anything which is gunna stop you suddenly.
^THIS... is why we ride!

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Old 12-23-2010, 11:34 PM   #12026
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Re: The Cafe/2Stroke/Single/Twin/Brit/Euro/Cool Bike Pic Thread

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Originally Posted by LtDan View Post
I owned an SR500-F 79. Did all the tricks carb/pipe. It was a good bike that got me to work and back but seriously lacked horsepower. I think stock it had 26hp at the rear wheel. One of the mags of the day tried hard to do cams and porting but the design of the cylinder head was not condusive to making a lot of power. They finally gave up. A BSA Goldstar would runaway and hide from an SR. In its day.
SR/XT/TT motors have been raced in flat track and in road racing for years now. They have been well developed over time. They are still very common in vintage racing circles etc. Good tuners know how to make them go pretty good .. and not explode.

40-45hp is not too difficult to achieve with carb, cam, rod, flowed head, higher comp piston and a well designed pipe.

I expect my SRX600 to be making 50hp when it is done.

What was true then is still true today. Bolting on parts and hoping for huge gains (or any gains) is usually a pipe dream. Tuning is an art form, with real skill being honed over time with lots of trial and error, testing various combinations of parts, rigorous note taking and most importantly, a dyno to tell you if anything's actually been gained.

How many guys were so equipped (or even bothered) back in the day .. or even today?

Not many.


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Old 12-24-2010, 03:16 AM   #12027
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Re: The Cafe/2Stroke/Single/Twin/Brit/Euro/Cool Bike Pic Thread

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Originally Posted by RD350 View Post

I expect my SRX600 to be making 50hp when it is done.
Oh - OK. Considering the RGV is only good for 70hp, in full race trim, all new, freshly tuned, on a good day - mine is none of those things. And it's very bloody difficult to keep in the groove if you're not on your game. 50hp 4-stoke could be a lot of fun on a track. The RGV is fun coz it's only worth $1200 at most, so you're not afraid of binning-it on a ride day. What kind of weight do you expect your SRX to end up?
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Old 12-24-2010, 07:35 AM   #12028
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Re: The Cafe/2Stroke/Single/Twin/Brit/Euro/Cool Bike Pic Thread

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Originally Posted by Boldor View Post
Oh - OK. Considering the RGV is only good for 70hp, in full race trim, all new, freshly tuned, on a good day - mine is none of those things. And it's very bloody difficult to keep in the groove if you're not on your game. 50hp 4-stoke could be a lot of fun on a track. The RGV is fun coz it's only worth $1200 at most, so you're not afraid of binning-it on a ride day. What kind of weight do you expect your SRX to end up?



My SRX project is going to be more "hot rodded" street bike than all out super-mono racer. That said, we hope to cut about 40-50lbs out of an all ready trimmed down bike. Target is close to 250lbs dry ..

Obviously for all out lightness, a frame kit from Harris or Spondon would cut weight significantly. But for my project, I want to retain the essence of the SRX, so that means retaining the frame and stock tank.

I should add that SRX's can fairly easily be brought up to 70hp for track use. But I reckon at the level, they become much less streetable .. and probably less dependable.

If I were building a supermono track bike I would likely start with the new KTM690 which makes around 70hp stock. Shoved in to a TZ250 chassis perhaps? Oh yes ...

Here is a great article from Dean Adams at Superbike Planet which explains the pleasure of singles, and the SRX single in particular, quite well :

Little Miss Understood
1986 Yamaha SRX: One Lung Of Power
http://www.superbikeplanet.com/2003-Oct/featuresrx.htm
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Old 12-24-2010, 08:02 AM   #12029
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Re: The Cafe/2Stroke/Single/Twin/Brit/Euro/Cool Bike Pic Thread



The Japanese really take things to a whole other level ...
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Old 12-24-2010, 11:36 AM   #12030
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Re: The Cafe/2Stroke/Single/Twin/Brit/Euro/Cool Bike Pic Thread

Boldor, I have a high-end single and I like it very much, but I'll say that I don't have a particular love for that engine configuration. Overall, I like twins better than singles and probably like I4's better than twins.

The torque of the single is nice, but the off-idle chugging sucks, and I do miss the top-end rush of a multi.

However, the payoff is in the weight and looks department. The bike is so narrow, very light (under 330lbs dry), and easy to ride (other than the low-speed chugging and not-great low-RPM on/off throttle). It's a peach in the midrange.

The stuff I really like about my 690 isn't specifically about the engine, though. It's the styling, light weight, and the quality of suspension, brakes, and driveline components. For the same money you can buy bikes with a lot more power and almost-as-good suspension, but I just don't want more than 80hp for the street, and I prefer something under 350 lbs.

I almost bought an XB9SX, but decided on the Duke because it's more unusual, lighter, and just feels like many of the components are half a notch higher on the quality scale (although not more innovative).

My cafe project is going to be based on a CB550 I4, and I do love those bikes, but there's no denying that there is a level of minimalist beauty that you only get with the I2's and singles.
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