Poll

How Fast Have You Driven on an SOHC/4?

55-75 MPH
33 (6.9%)
76-95 MPH
99 (20.7%)
96-115 MPH
174 (36.4%)
116-125 MPH
67 (14%)
126> MPH
105 (22%)

Total Members Voted: 406

Author Topic: Fastest you've ridden your bike. MPH and RPM. Year and model of bike.  (Read 131054 times)

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Offline Reindeer

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I had my '06 SV650 over 100mph more times than I could count.

The fastest I've ever had my 78 CB750 is when I rolled it out of the back of my truck into my garage.
75 CB750 hardtail bobber
78 CB750 project...might run someday

Offline Laminar

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'83 Nighthawk 550

110mph

Offline BobbyR

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85mph on 78 550, ~8000rpm.  for some reason the Manhattan Bridge going from Brooklyn into Manhattan is often nearly empty at weekday rushour--five minutes to 9 more precisely--when i'm headed to work.  maybe its just that i make it out of the light first  8)  its one of the few places around nyc to open up the throttle on a long and straight stretch of pavement without monster potholes and with no cars around.  in this situation 85mph happens with ease and coincides with a killer view of the city.  the return trip to brooklyn is a totally different story most nights and sometimes the definition of terrifying: windy upper roadway with massive expansion joints, potholes, metal grates, concrete barriers, delivery trucks and tourbuses.  oh, and wavy-ass, light-sucking, patched up asphalt.  i happily ride under 40mph at those times.
You got a big pair going over the Manhattan Bridge anytime. I tip my hat to you.
Dedicated to Sgt. Howard Bruckner 1950 - 1969. KIA LONG KHANH.

But we were boys, and boys will be boys, and so they will. To us, everything was dangerous, but what of that? Had we not been made to live forever?

justjosh

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i take my k5 over 100 atleast once a month or so. A few of us are preping for elmirage right now. Im going for 140 on a stock engine 750. Should be no prob

Offline Retro Rocket

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Sorry Josh but there is no way your stock 750/4 will do 140 MPH, they were struggling to get 120 stock, unless you have a very very long hill and a tailwind, i doubt you will get any where near 140. Also without a steering damper i wouldn't even go over the ton.

Mick
750 K2 1000cc
750 F1 970cc
750 Bitsa 900cc
If You can't fix it with a hammer, You've got an electrical problem.

Offline cb750fbomb

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I got her up to 90 mph twice the other night and she runs a lot better now. I would have tried for the ton, but a curve and transfer trucks kept me from going any faster
'77 CB750F2
“The major difference between a thing that might go wrong and a thing that cannot possibly go wrong is that when a thing that cannot possibly go wrong goes wrong it usually turns out to be impossible to get at or repair.”

Offline Industrial Cafe

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Sorry Josh but there is no way your stock 750/4 will do 140 MPH, they were struggling to get 120 stock, unless you have a very very long hill and a tailwind, i doubt you will get any where near 140. Also without a steering damper i wouldn't even go over the ton.

Mick

71 cb750 cafe 78 motor.
120mph at about 8600rpm
yeah man, look at my rpms at 120pmh

what is this elmirage, an alternate dimension?  ;D ;D ;D
everything I say is pure speculation and
I have no idea what I'm talking about  ._.


                                    Marla              .:71CB750:.CAFE

justjosh

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Sorry Josh but there is no way your stock 750/4 will do 140 MPH, they were struggling to get 120 stock, unless you have a very very long hill and a tailwind, i doubt you will get any where near 140. Also without a steering damper i wouldn't even go over the ton.

Mick

71 cb750 cafe 78 motor.
120mph at about 8600rpm
yeah man, look at my rpms at 120pmh

what is this elmirage, an alternate dimension?  ;D ;D ;D


El mirage is a dry lake bed in SO CAL. Its kinda like bonneville just not so far from me. And im running a stock motor not a totaly stock bike. Ive got rear sprockets down to 36t and a few other tricks up my sleeve. Im the second owner of my bike, The first is my uncle Steve Douke. He bought it new when he was a tech at South City Honda Cycles in sacramento. Hes still with honda and has about 20sohc's in the barn in various stages of restoration. With proper tunning 140 wont be a prob. It helps that i weigh 145 pound and yes a steering stabalizers already on the bike.

Offline Industrial Cafe

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oh, neat!  ;D
everything I say is pure speculation and
I have no idea what I'm talking about  ._.


                                    Marla              .:71CB750:.CAFE

justjosh

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   its a blast. If all goes well its off to bonneville in august for speed week. Is anyone else going?

Offline MCRider

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Sorry Josh but there is no way your stock 750/4 will do 140 MPH, they were struggling to get 120 stock, unless you have a very very long hill and a tailwind, i doubt you will get any where near 140. Also without a steering damper i wouldn't even go over the ton.

Mick

71 cb750 cafe 78 motor.
120mph at about 8600rpm
yeah man, look at my rpms at 120pmh

what is this elmirage, an alternate dimension?  ;D ;D ;D


El mirage is a dry lake bed in SO CAL. Its kinda like bonneville just not so far from me. And im running a stock motor not a totaly stock bike. Ive got rear sprockets down to 36t and a few other tricks up my sleeve. Im the second owner of my bike, The first is my uncle Steve Douke. He bought it new when he was a tech at South City Honda Cycles in sacramento. Hes still with honda and has about 20sohc's in the barn in various stages of restoration. With proper tunning 140 wont be a prob. It helps that i weigh 145 pound and yes a steering stabalizers already on the bike.
Good luck. It takes a lot of horsepower to pull a 36t sprocket to redline. That's Daytona gearing, 90hp stuff.

Seriously though, I watched "worlds fastest indian" so good luck and let us know.
Ride Safe:
Ron
1988 NT650 HawkGT;  1978 CB400 Hawk;  1975 CB750F -Free Bird; 1968 CB77 Super Hawk -Ticker;  Phaedrus 1972 CB750K2- Build Thread
"Sometimes the light's all shining on me, other times I can barely see, lately it appears to me, what a long, strange trip its been."

justjosh

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   Im not sure which sprocket i will be running yet. I've got em in 1t incraments from 36t to 52t. I will probably settle around 42t. That should end up at 140mph around 8k rpm. Worlds fastest is an amazing story and it did push me quite a bit to go out there and go for it.

Offline Industrial Cafe

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you'll do it, with a long enough track... I went 127 yesterday at 9000rpms... down hill.
everything I say is pure speculation and
I have no idea what I'm talking about  ._.


                                    Marla              .:71CB750:.CAFE

Offline shizzomynizzo

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102 550 K0
Scared $hitless, definitely needs a damper for over 100! ;D

Fastest ever on a bike, my brothers R6 @145, Smoothest rider ever.
next, my old Duc 900ss 138, topped out

Fastest ever in a car 1998 Viper GTS coupe - 187 MPH :o (I rode shotty with a professional driver at a track day with chrysler)
1974 CB550
1985 XLX Last of the IH
2001 Street Glide

Offline volkswagendan

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i went 200 mph on my honda ruckus yesterday. ...up hill too!
 its turbo'd with a blower and NOS!!!  it has flames painted on it so people know how fast it is.
next week i'm going for 215.
don't take me too seriously.

Offline HavocTurbo

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i went 200 mph on my honda ruckus yesterday. ...up hill too!
 its turbo'd with a blower and NOS!!!  it has flames painted on it so people know how fast it is.
next week i'm going for 215.

Don't forget the colored wire looms man..... add like 25 horses EZPZ!!!

If you need some pointers --> You know who to call.  8)

 ;D :D ;D :D
'48 HD Panhead - Exxon Valdez
'78 CB550K - Fokker CB.3
'78 Honda CB750K - Mavrik
'80 Yamaha XS850G - Kanibalistik
09 XL883L - No Name

Offline cb750fbomb

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Got up to 110 mph a couple of weeks ago. I was cruising between 70-80 mph on the interstate, it opened up to 6 lanes and I couldn't help but open her up a little. I don't remember the rpms, but I had a good bit more throttle to go. I had a summer mesh jacket that was acting as a sail with the padding in it at that speed, so I was tucked and looking between the speedo and the tach tucked up really tight.
'77 CB750F2
“The major difference between a thing that might go wrong and a thing that cannot possibly go wrong is that when a thing that cannot possibly go wrong goes wrong it usually turns out to be impossible to get at or repair.”

Offline razor02097

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85mph 7000rpm... 85mph 8000rpm... 85mph 9000rpm...  Is my speedometer broken?   :D :D :D :D :D

Project Rina

That is an inconceivably egregious transgression against my rudimentary concordance of socially shunned individuals.

Offline lowmileage

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Tried for a hundred in the late 70's with the 750 but chickened out.  Was at 95 (or so) and the speedo seemed stuck and since the area was known to be patroled, I backed off.
1975 750 K5 Original owner -  11K miles.  On the road 8/09 after 26 years in storage.
2004 Harley Superglide - bought new
1973 Honda CL350 - sold in '75 to buy the "750"

Offline clarkjh

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I think I might have had Surely up to a ton, but at those speeds, I'm watching the road not the speedo.  I have had Samson up to the ton, but not with SWMBO on the back. :D

James
SOHC/4 #3328
SOHC/4 Gallery: http://www.sohc4.us/gallery/v/members/personal/clarkjh/
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1980 GL1100, 102789 KM - Back on the road after a complete engine rebuild. 
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Offline HavocTurbo

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SWMBO?
'48 HD Panhead - Exxon Valdez
'78 CB550K - Fokker CB.3
'78 Honda CB750K - Mavrik
'80 Yamaha XS850G - Kanibalistik
09 XL883L - No Name

Offline tomsweb1

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'83 Nighthawk 550

110mph

Man, I've done exactly that, on the same bike. Loved that machine while she was still alive.

I've only had my 78 750a up to about 87 MPH. No idea what the RPMs might be, since I have no tach. I'd like to get a windscreen before I go any faster. It's awfully hard to see where you are going when your eyes are welling up like that!

I have to have a conversion site open to read tis thread, I only speak KPH.  ;D
« Last Edit: June 15, 2009, 01:53:40 PM by tomsweb1 »
Present: 1978 CB750A, 1978 CB400A, 1983 Nighthawk 550, 1984 CM250C

Past: 1977 XL100, 1982 KZ1300

Offline climbingaz

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I've had my ZRX up to 142 indicated (probably closer to 130 actual because of the speedo error) = SCARY  :o!

So far I've only had my '78 CB 750 up to about 2mph rolling it off my trailer.  Gotta get the thing running first.  :D

Offline myhondas

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I think I might have had Surely up to a ton, but at those speeds, I'm watching the road not the speedo.  I have had Samson up to the ton, but not with SWMBO on the back. :D

James

TON  ??? ??? ???

SWMBO  ??? ??? ???
1974 CB 750 K4 SHOWROOM
1974 CB 750 K4 IN PART-OUT PROCESS (my original bike)
1965 C100 CUB 50 (PIT BIKE)
1996 VF 750 CD daily rider
1983 VF 1100 V65 Magna in restoration process
SOHC# 5105 11228

Offline heffay

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TON = 100MPH

SWMBO = SHE WHO MUST BE OBEYED!
Today: '73 cb350f, '96 Ducati 900 Supersport
Past Rides: '72 tc125, '94 cbr600f2, '76 rd400, '89 ex500, '93 KTM-125exc, '92 zx7r, '93 Banshee, '83 ATC250R, 77/75 cb400f