Author Topic: New Record at Bonneville ACTUALLY 4 NEW RECORDS  (Read 1592 times)

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Offline Jerry Rxman Griffin aka MuthaF'er

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New Record at Bonneville ACTUALLY 4 NEW RECORDS
« on: August 26, 2018, 10:47:31 am »
Old Scrambler just backed up his 138.342 pass with a 147.768. He upped the partial streamline 750 record from his 137 to 142ish
« Last Edit: August 31, 2018, 08:46:12 pm by Jerry Rxman Griffin aka MuthaF'er »
As of today 3/13/2012 my original owner 75 CB750F has made it through 3 wives, er EX-wives. Free at last.  ;-)

Offline kmb69

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Re: New Record at Bonneville
« Reply #1 on: August 26, 2018, 11:34:56 am »
Old Scrambler just backed up his 138.342 pass with a 147.768. He upped the partial streamline 750 record from his 137 to 142ish

BIG KUDOS to Dennis!  :)  :)  :)

Offline RAF122S

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Re: New Record at Bonneville
« Reply #2 on: August 26, 2018, 11:51:38 am »
Congrats Dennis! Gonna try again or settle for that run? 
Best of luck with your other bike, hope it takes the title back...
David stuck in the curvy back roads of "Upper East" TN

Offline BPellerine

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Re: New Record at Bonneville
« Reply #3 on: August 26, 2018, 03:06:41 pm »
way to go!your efforts paid off!
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Online bwaller

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Re: New Record at Bonneville
« Reply #4 on: August 26, 2018, 03:34:12 pm »
Thanks Jerry. Glad to see all the hard work has paid off Dennis, congratulations man.

Wow nearly 148 on the salt, must be damn good numbers.

Nothing comes easy though huh?

Offline RP

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Re: New Record at Bonneville
« Reply #5 on: August 26, 2018, 03:47:15 pm »
148!......That is movin' for a Classic.  Salt conditions are great this year.
Ralph
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Offline dragracer

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Re: New Record at Bonneville
« Reply #6 on: August 26, 2018, 07:52:21 pm »
Congratulations'

Offline Jerry Rxman Griffin aka MuthaF'er

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Re: New Record at Bonneville
« Reply #7 on: August 26, 2018, 07:52:35 pm »
2 more classes to get the records  ;)
As of today 3/13/2012 my original owner 75 CB750F has made it through 3 wives, er EX-wives. Free at last.  ;-)

Offline Old Scrambler

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Re: New Record at Bonneville
« Reply #8 on: August 26, 2018, 08:18:41 pm »
Thanks, guys.................3 more classes to run as long as the weather holds...........several other riders and a few big-name teams are taking note, especially since they are running a little slower with newer and bigger bikes. ;D ;D ;D ;D ;D ;D ;D

If good conditions allow............I will still try to get a 150+mph run ;)............but will settle for what the motor and the salt gives me. The motor is running sweet but not pulling into the higher rpms (9000+) as desired except in the lower gears. On the 147+ run it felt good to have the air flowing along my back. That told me that its mostly aero-------not power--------at these speeds with a small motor.
Dennis in Wisconsin
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Offline scottly

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Re: New Record at Bonneville
« Reply #9 on: August 26, 2018, 08:38:05 pm »
What RPM are you turning at 147 MPH?
Don't fix it if it ain't broke!
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Offline Jerry Rxman Griffin aka MuthaF'er

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Re: New Record at Bonneville
« Reply #10 on: August 26, 2018, 08:48:57 pm »
17:45 at 7200 in 5th
As of today 3/13/2012 my original owner 75 CB750F has made it through 3 wives, er EX-wives. Free at last.  ;-)

Offline scottly

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Re: New Record at Bonneville
« Reply #11 on: August 26, 2018, 09:05:08 pm »
7200 RPM @ 147MPH???!!??
Don't fix it if it ain't broke!
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Offline 754

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Re: New Record at Bonneville
« Reply #12 on: August 26, 2018, 09:14:16 pm »
 Are you running morning or afternoon?
 I am 5 hours out. MOUNTAIN HOME idaho.
 May press on a bit further..
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Offline scottly

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Re: New Record at Bonneville
« Reply #13 on: August 26, 2018, 10:17:27 pm »
If the motor is only turning 7200 in 5th at 147, the gearing is too tall! Try switching the front 17 for a 16, and see what the speed and RPM are. 16/45 may still be too tall, but the only way to lower the ratio any more would be with a larger rear sprocket that you don't have handy.
Don't fix it if it ain't broke!
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Offline RAZZ

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New Record at Bonneville
« Reply #14 on: August 27, 2018, 12:20:22 am »
Here a picture from of the bike ( from John Winston  the Cb page on facebook)


Sent from my iPhone using Tapatalk
« Last Edit: August 27, 2018, 12:23:13 am by RAZZ »

Offline Bill/BentON Racing

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Re: New Record at Bonneville
« Reply #15 on: August 27, 2018, 04:30:20 am »
If the motor is only turning 7200 in 5th at 147, the gearing is too tall! Try switching the front 17 for a 16, and see what the speed and RPM are. 16/45 may still be too tall, but the only way to lower the ratio any more would be with a larger rear sprocket that you don't have handy.
Yes,  try a 16, Great job Dennis and the rest of y'all!  K.
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Offline jgger

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Re: New Record at Bonneville
« Reply #16 on: August 27, 2018, 04:45:55 am »
This is so awesome,  great job gentlemen!  Thanks for sharing  (crowing) you earned it.

Offline Sam Green Racing

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Re: New Record at Bonneville
« Reply #17 on: August 27, 2018, 07:16:47 am »
If the motor is only turning 7200 in 5th at 147, the gearing is too tall! Try switching the front 17 for a 16, and see what the speed and RPM are. 16/45 may still be too tall, but the only way to lower the ratio any more would be with a larger rear sprocket that you don't have handy.

Just as important Scott, what revs was it turning on the 138.342 run ?
I am inclined to agree though mate, it defo sounds over geared.
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Online gschuld

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Re: New Record at Bonneville
« Reply #18 on: August 27, 2018, 10:05:32 am »
Dennis,

Nice going buddy.👍

If you can remember, have someone take a number of pics of you on the bike in the full tuck position from the front, back, and side.  These pics are always best done on the salt with a clear background, most photogenic.😎

Go get em...

George

Offline scottly

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Re: New Record at Bonneville
« Reply #19 on: August 27, 2018, 05:51:18 pm »
If the motor is only turning 7200 in 5th at 147, the gearing is too tall! Try switching the front 17 for a 16, and see what the speed and RPM are. 16/45 may still be too tall, but the only way to lower the ratio any more would be with a larger rear sprocket that you don't have handy.

Just as important Scott, what revs was it turning on the 138.342 run ?
I am inclined to agree though mate, it defo sounds over geared.
What gear was used on the 138 run? If it was with 4th, I'm guessing 10,000 plus. ;)
Don't fix it if it ain't broke!
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Offline richmagee7

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Re: New Record at Bonneville
« Reply #20 on: August 27, 2018, 07:46:00 pm »
Awesome Dennis, good to see you and Jerry.

Offline scottly

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Re: New Record at Bonneville
« Reply #21 on: August 27, 2018, 07:57:44 pm »
Any updates?? Is everyone too busy celebrating at the Bend in the Road bar? ??? Did Frank make it there?
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Offline Old Scrambler

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Re: New Record at Bonneville
« Reply #22 on: August 27, 2018, 08:46:51 pm »
Frank is here...........at the motel ;D ;D ;D ;D ;D ;D ;D
'
No success today but now running 16-43 and upping the jets from 120 to 125 and then 130.............windy today so no luck........chasing the M-CG record at 137.6.................Then to the fuel classes which are quite low.

One more 'crew' member to arrive in the AM for a total of 8 ;D ;D ;D ;D
Dennis in Wisconsin
'64 Triumph Cub & '74 Honda CB750 Bonneville Salt Flats AMA Record Holder (6)
CB750 Classic Bonneville Racer thread - http://forums.sohc4.net/index.php/topic,135473.0.html
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Offline scottly

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Re: New Record at Bonneville
« Reply #23 on: August 27, 2018, 09:21:51 pm »
Why up the main jets? Are you switching to methanol??  Otherwise, run the same mains that netted 147MPH, and concentrate on gearing. ;)
Don't fix it if it ain't broke!
Helmets save brains. Always wear one and ride like everyone is trying to kill you....

Offline Bill/BentON Racing

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Re: New Record at Bonneville
« Reply #24 on: August 28, 2018, 04:00:39 am »
Wondered that, but ya'll there, we in in the chair!  ;D, Bill
Glad Frank arrived. K. Ya'll do it! You making us proud.  So cool those pistons were brought back to life by you guys! Randy Carabelli must be smiling......
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Over 35 years of experience working on vintage motorcycles, with a speciality in Honda SOHC/4 with a focus on the CB750 and other models as well from 1966 - 1985.
______________________________________
1993 HRC RS125 | 1984 NS400R | 1974 Honda CB750/836cc (Calendar Girl) | 1972 CB 500/550 Yoshi Kitted 590cc | 1965 Honda CB450 Black Bomber | 1972 Suzuki T350 | 1973 88cc | Z50/Falcons Pit Bike | 1967 CA100| 1974 CB350 (400F motor)...and more.
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See our latest build 'Captain Marvel' CLICK HERE

 

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