Topic: Bonneville Turbo CB500/550

[Sam Green Racing]

not as tall as it would have been for 207mph Gregg

[Greggo]

not as tall as it would have been for 207mph Gregg

Uhhhh, I thought you were just joking Sam

[Terry in Australia]

I reckon my non-turbo 836 would come close to 150 on the road, it'll do 120 in third gear @ 11000 RPM, but I've never found a (cop free) road longer than that to explore it's "outer limits". 207 is pretty impressive though Sammy!

[ivanhoew]

best i have managed on my 500 twin  was 155.8 mph , with a rucksack on chasing a n2o gsxr. but it was on the limiter and is about as aerodynamic as a housebrick with sails on .

[Syscrush]

I reckon my non-turbo 836 would come close to 150 on the road, it'll do 120 in third gear @ 11000 RPM, but I've never found a (cop free) road longer than that to explore it's "outer limits". 207 is pretty impressive though Sammy!

Have you had that bike on a dyno?  Is it over or under 110hp?

[754]

 That 150 was before the Dohc 750 came out, probably naked..

[Retro Rocket]

best i have managed on my 500 twin  was 155.8 mph , with a rucksack on chasing a n2o gsxr. but it was on the limiter and is about as aerodynamic as a housebrick with sails on .

Check your speedo....

[Terry in Australia]

I reckon my non-turbo 836 would come close to 150 on the road, it'll do 120 in third gear @ 11000 RPM, but I've never found a (cop free) road longer than that to explore it's "outer limits". 207 is pretty impressive though Sammy!

Have you had that bike on a dyno?  Is it over or under 110hp?

No mate, a dyno run here costs around 300 bucks per session (well that's what it cost me to dyno my Rocket III) but I reckon my 836 would be around the 80 BHP mark. Why would it need to be over 110 BHP? Cheers, Terry.

[Syscrush]

No mate, a dyno run here costs around 300 bucks per session (well that's what it cost me to dyno my Rocket III) but I reckon my 836 would be around the 80 BHP mark. Why would it need to be over 110 BHP? Cheers, Terry.

The 80hp bikes I've ridden were good for about 125mph naked or a bit over 130 fully faired (crank hp, GPS speed #'s).  The 165mph bikes I've ridden have about 120hp at the crank and are fully faired.  I would think you'd want ~100hp at the wheel to get a naked bike to 150+, but if you're adventurous like Rollie Free and the conditions are just right, it can obviously be done with less.

[Tuff240]

You guys are nucking futs.
I've been over 190mph (generous speedo) on an older R1 (140hp?). I can't imagine how scary it must be anywhere near that speed on these old naked bikes. 

[Retro Rocket]

You guys are nucking futs.
I've been over 190mph (generous speedo) on an older R1 (140hp?). I can't imagine how scary it must be anywhere near that speed on these old naked bikes. 

Did it all the time 30 years ago....

[Terry in Australia]

You guys are nucking futs.
I've been over 190mph (generous speedo) on an older R1 (140hp?). I can't imagine how scary it must be anywhere near that speed on these old naked bikes. 

Did it all the time 30 years ago....

Did it all the time last year...............

[754]

Hey you last two, he said MPH..not KPH...

[Retro Rocket]

Hey you last two, he said MPH..not KPH...

Yeah i know Frank, he was referring to the speeds mentioned earlier...  .I know what 165MPH feels like....

150 KPH is 93.2 MPH, thats not even fast....

[Tuff240]

150 KPH is 93.2 MPH, thats not even fast....

I went to a church group with a gf once and somehow driving/riding 100mph came up and they were all dumbfounded anyone would go that fast. That was top of 2nd on my new 00 R1 at the time. I opted to keep my mouth shut. 

[ivanhoew]

best i have managed on my 500 twin  was 155.8 mph , with a rucksack on chasing a n2o gsxr. but it was on the limiter and is about as aerodynamic as a housebrick with sails on .

Check your speedo....

speedo was a digital  pushbike one calibrated for the bike wheel size ., gearing for 11000 rpm worked out correctly for speed . i was suprised too lol , the intercooler was rd hot on inlet ,and luke warm on outlet ,so i think it was a bit outside it comprrssor map .

[Terry in Australia]

Hey you last two, he said MPH..not KPH...

Yeah i know Frank, he was referring to the speeds mentioned earlier...  .I know what 165MPH feels like....

150 KPH is 93.2 MPH, thats not even fast....

It fcuking is on my CX500 Mick, and doesn't come up that often..................

[Retro Rocket]

Hey you last two, he said MPH..not KPH...

Yeah i know Frank, he was referring to the speeds mentioned earlier...  .I know what 165MPH feels like....

150 KPH is 93.2 MPH, thats not even fast....

It fcuking is on my CX500 Mick, and doesn't come up that often..................

I'm hearing you Terry....

[Terry in Australia]

I'm going to court tomorrow to fight a speed camera fine Mick, I reckon if I told the magistrate that I was riding my CX500 he'd throw the case out of court!

[Sam Green Racing]

not as tall as it would have been for 207mph Gregg

Uhhhh, I thought you were just joking Sam

Mel is a member on here Gregg. some pics here,  http://www.flickr.com/photos/nitrous2000/6189820948/#

and click the link below.

[Sam Green Racing]

Not wanting to hyjack your thread young Gregg but here's a bit more on Mel (username Dodger) and a nice pic of Mel on the bike.
http://www.flickr.com/photos/nitrous2000/6189299935/#in/photostream

http://forums.sohc4.net/index.php?topic=96337.0

Sam.

[Syscrush]

WOW.

[Sam Green Racing]

Seems kinda hard to believe that a countries outright land speed record could belong to a SOHC4.

Rock on Mel.

Sam.  

[Greggo]

Well, I don't mind all this top speed talk, because I'm pretty much convinced this bike (yea, back to my bike now ) was/is capable of that 175.813mph record...which still stands for its class

APS-BF    Steve Alexander    Honda    08/79    175.813

http://www.scta-bni.org/Bonneville/BNI_records.htm

I wonder if the stretched swing/custom swing arm was enough to push it out of the 'production' class?? 

[Syscrush]

Well, I don't mind all this top speed talk, because I'm pretty much convinced this bike (yea, back to my bike now ) was/is capable of that 175.813mph record...which still stands for its class

I sure hope so, it would be awesome for you to put this bike in the books!