Author Topic: New Record at Bonneville ACTUALLY 4 NEW RECORDS  (Read 1591 times)

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Offline scottly

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Re: New Record at Bonneville
« Reply #25 on: August 28, 2018, 07:48:45 pm »
Updates?? Pretty pleeaze. ;D
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Offline 754

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Re: New Record at Bonneville
« Reply #26 on: August 29, 2018, 05:12:10 am »
 Dennis  set another record yesterday,going for another today.
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Offline RAF122S

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Re: New Record at Bonneville
« Reply #27 on: August 29, 2018, 05:53:21 am »
Glad you made it there safely Frank!

Masterful tease Frank.
What class and bike? Streamline or non-streamline?
Details please, pretty please.

Congrats Dennis! 
David stuck in the curvy back roads of "Upper East" TN

Offline 754

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Re: New Record at Bonneville
« Reply #28 on: August 29, 2018, 07:17:09 am »
Naked, the fairing has been off , before I got here.
 He ran a 136 yesterday, i believe he will try to crack the fuel record, using gasoline.
 Jerry pulled out this morning..
 Coolest I have see  it here for bike week, don't think it will break 90, yesterday or today..
Maker of the WELDLESS 750 Frame Kit
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Kelowna B.C.       Canada

My next bike will be a ..ANFOB.....

It's All part of the ADVENTURE...

73 836cc.. Green, had it for 3 decades!!
Lost quite a few CB 750's along the way

Offline dragracer

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Re: New Record at Bonneville
« Reply #29 on: August 29, 2018, 12:01:37 pm »
Congratulations again Dennis. Making the SOHC crowd stand up with pride.

Offline Jerry Rxman Griffin aka MuthaF'er

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Re: New Record at Bonneville
« Reply #30 on: August 29, 2018, 06:24:04 pm »
Saturday morning first run netted the 138 then the back up return run was the 147.8 with NO changes. We didn't see enough 147's!

Epic battles with the Triumph. They were getting some air time from the announcer.
As of today 3/13/2012 my original owner 75 CB750F has made it through 3 wives, er EX-wives. Free at last.  ;-)

Offline 754

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Re: New Record at Bonneville
« Reply #31 on: August 29, 2018, 06:29:54 pm »
Jerry, i spent most of the afternoon pulling  the Preachers top end off..836. Ha..
Maker of the WELDLESS 750 Frame Kit
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Kelowna B.C.       Canada

My next bike will be a ..ANFOB.....

It's All part of the ADVENTURE...

73 836cc.. Green, had it for 3 decades!!
Lost quite a few CB 750's along the way

Offline Sam Green Racing

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Re: New Record at Bonneville
« Reply #32 on: August 30, 2018, 02:41:14 am »
Frank, what was the Preachers 836 ?
C95 sprint bike.
CB95 hybrid race bike
CB95 race bike
CB92
RS 175. sprint/land speed bike
JMR Racing CB750A street ET drag bike

Offline Jerry Rxman Griffin aka MuthaF'er

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Re: New Record at Bonneville
« Reply #33 on: August 30, 2018, 09:58:16 am »
Did you ID the cam? So stock engine with 836?!

Sam, that bike was a built-for-show bike. Cafe Racer TV. It had so many inaccuracies and BS it was ridiculous. One article said it had a RC Cobra 826 and another said it had a RC Cobra 936. It said that Larry Spiderman McBride built the carbs at a race. That was the funniest one  ;) Said it had a MTC tranny and Fast by Gast built the engine. Also it said Mikuni carbs but they are Keihin CR and they didn't know what size. He ran it in 1000 fuel class and barely managed to set a record at 109. It's really making me think of getting my 1000 out there.
As of today 3/13/2012 my original owner 75 CB750F has made it through 3 wives, er EX-wives. Free at last.  ;-)

Offline Sam Green Racing

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Re: New Record at Bonneville
« Reply #34 on: August 30, 2018, 03:42:15 pm »


Sam, that bike was a built-for-show bike. Cafe Racer TV. It had so many inaccuracies and BS it was ridiculous. One article said it had a RC Cobra 826 and another said it had a RC Cobra 936. It said that Larry Spiderman McBride built the carbs at a race. That was the funniest one  ;) Said it had a MTC tranny and Fast by Gast built the engine. Also it said Mikuni carbs but they are Keihin CR and they didn't know what size. He ran it in 1000 fuel class and barely managed to set a record at 109. It's really making me think of getting my 1000 out there.

Jerry, as you know, my drag bike would run that speed at the 1000 foot mark, haha.
I guess you weren't there when we had a run in with this Preachers crew and Cafe racer TV at Valdosta or you would have remembered.
The lads spent most of the day setting the bike up for them so that Rickey Gadson could ride it on the Monday and compare it to a modern day Kawasaki who Gadson is sponsored by.
They/we eventually got it running in our pit and it was real noisy. I reached into the tool box for a long plastic handled screw driver that we had to use as a stethoscope on the motor to pin point the noise. just as I was about to put the end in the region of the cam chain, I noticed there was no oil pressure on the gauge and at that moment, the motor cut out anyway because they had not turned on the gas. hahaha.
The screw driver was about a foot long so I dipped it in the oil tank and it came out bone dry, hahaha.
I'm not sure they should be reality TV motorcycle builders, they would be better off making Westerns as they are nothing but a bunch of Cowboys.
I have a couple of pictures of them with us but they are in my old computer until I can get them transferred.

P.S. They also said that Larry had rebuilt the carbs on this one. hahahahaha. 
 
« Last Edit: August 30, 2018, 03:44:50 pm by Sam Green Racing »
C95 sprint bike.
CB95 hybrid race bike
CB95 race bike
CB92
RS 175. sprint/land speed bike
JMR Racing CB750A street ET drag bike

Offline 754

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Re: New Record at Bonneville
« Reply #35 on: August 30, 2018, 05:51:08 pm »
It had a pretty lumpy cam . I did not see any I'd markings but did not pull the washer.. stock cam sprocket.
 Cam looked a bit like a grey coating, but no flat with the grind marked on it like Norris.
Dennis thinks intakes may have been oversize,  but chambers looked untouched. I forgot to check the ports.
 It had red valve retainers, so maybe RC springs. 
 And it had the CR carbs.
 Nothing too crazy in there..

Last night we went and had a few beers, Terry and I... the Preacher name never came up through the whole thing.
Maker of the WELDLESS 750 Frame Kit
dodogas99@gmail.com
Kelowna B.C.       Canada

My next bike will be a ..ANFOB.....

It's All part of the ADVENTURE...

73 836cc.. Green, had it for 3 decades!!
Lost quite a few CB 750's along the way

Offline 754

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Re: New Record at Bonneville
« Reply #36 on: August 30, 2018, 06:18:19 pm »
 The last bike in teardown today was a 550 Honda with velocity stacks and slash cut drag pipes.
 It ran  117 mph... wtf....
Maker of the WELDLESS 750 Frame Kit
dodogas99@gmail.com
Kelowna B.C.       Canada

My next bike will be a ..ANFOB.....

It's All part of the ADVENTURE...

73 836cc.. Green, had it for 3 decades!!
Lost quite a few CB 750's along the way

Offline madmtnmotors

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Re: New Record at Bonneville
« Reply #37 on: August 31, 2018, 05:23:38 am »
The last bike in teardown today was a 550 Honda with velocity stacks and slash cut drag pipes.
 It ran  117 mph... wtf....

In 2nd gear!  :o  ;)  ;D
TAMTF...


Wilbur



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Offline NickO

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Re: New Record at Bonneville
« Reply #38 on: August 31, 2018, 06:50:26 am »
If somebody can give me the:

1. primary reduction ratio
2. 5th (top) gear ratio
3. Precise circumference of the back tyre

I can provide a gearing chart for you. This will show the top speed for a given RPM for various combinations of final drive reduction.

I've already done the hard work years ago for a mate who races on the roads and it's been accurate to within 1 mph @ 140mph (logged on a GPS).
« Last Edit: August 31, 2018, 06:56:16 am by NickO »

Offline Jerry Rxman Griffin aka MuthaF'er

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UPDATE!! 4 (FOUR) New RecordS at Bonneville
« Reply #39 on: August 31, 2018, 09:01:26 am »
Just got off the phone with Dennis. He's been driving all night and is already in Minnesota. He said "when I left The Salt we left with FOUR new records. WooHOOOOOOOOO!!! A great year. Not bad for an old 750. The Triumph trident got shut out  ;) ;D   
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Offline bwaller

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Re: New Record at Bonneville
« Reply #40 on: August 31, 2018, 05:08:34 pm »
WFO baby. Awesome Dennis!  8)

Offline BPellerine

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Re: New Record at Bonneville
« Reply #41 on: August 31, 2018, 05:33:58 pm »
Jerry, i spent most of the afternoon pulling  the Preachers top end off..836. Ha..
I read the write up a couple years back on that bike,engine was described as a ''rare'' golden rod motor,whatever that is,not all that fast for all the hype.bill
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Offline scottly

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Re: New Record at Bonneville
« Reply #42 on: August 31, 2018, 05:42:34 pm »
If somebody can give me the:

1. primary reduction ratio
2. 5th (top) gear ratio
3. Precise circumference of the back tyre

I can provide a gearing chart for you. This will show the top speed for a given RPM for various combinations of final drive reduction.

1. 1.708
2a. 4th gear 1.097
2b. 5th gear .939
3. plug in a circumference of 80" as a guesstimate, with 4th gear and a 17/48 final drive, and I'll see how it compares with my dyno readings.
Don't fix it if it ain't broke!
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Offline NickO

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Re: New Record at Bonneville
« Reply #43 on: September 02, 2018, 03:57:45 am »
If somebody can give me the:

1. primary reduction ratio
2. 5th (top) gear ratio
3. Precise circumference of the back tyre

I can provide a gearing chart for you. This will show the top speed for a given RPM for various combinations of final drive reduction.

1. 1.708
2a. 4th gear 1.097
2b. 5th gear .939
3. plug in a circumference of 80" as a guesstimate, with 4th gear and a 17/48 final drive, and I'll see how it compares with my dyno readings.

8,000 RPM
4th 114.5
5th 133.8

8,500 RPM
4th 121.7
5th 142.2

9,000 RPM
4th 128.9
5th 150.5

Offline Bill/BentON Racing

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Re: New Record at Bonneville ACTUALLY 4 NEW RECORDS
« Reply #44 on: September 02, 2018, 04:03:35 am »
Congratulations Dennis and Dave
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Offline Old Scrambler

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Re: New Record at Bonneville ACTUALLY 4 NEW RECORDS
« Reply #45 on: September 02, 2018, 08:39:13 am »
Jerry..............I think it was 3 records.......we missed the M-CG by 3-tenths.  Could have gotten it with a run on late Wednesday, but did not know at the time I chose to tear down.

Thanks to all for the attention and the calculations.
Dennis in Wisconsin
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Offline Jerry Rxman Griffin aka MuthaF'er

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Re: New Record at Bonneville ACTUALLY 4 NEW RECORDS
« Reply #46 on: September 02, 2018, 08:42:47 am »
More incentive  ;)
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 #47 on: September 02, 2018, 07:26:33 pm »
If somebody can give me the:

1. primary reduction ratio
2. 5th (top) gear ratio
3. Precise circumference of the back tyre

I can provide a gearing chart for you. This will show the top speed for a given RPM for various combinations of final drive reduction.

1. 1.708
2a. 4th gear 1.097
2b. 5th gear .939
3. plug in a circumference of 80" as a guesstimate, with 4th gear and a 17/48 final drive, and I'll see how it compares with my dyno readings.

8,000 RPM
4th 114.5
5th 133.8

8,500 RPM
4th 121.7
5th 142.2

9,000 RPM
4th 128.9
5th 150.5
My dyno said, with 4th gear and 17:48 sprockets:
8000 98.3
8500 105.2
9000 111.1
I also measured the rear tire by wrapping a string around the center of the tire tread and came up with 82 3/4".
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 kmb69

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Re: New Record at Bonneville
« Reply #48 on: September 02, 2018, 07:59:29 pm »
.....
My dyno said, with 4th gear and 17:48 sprockets:
8000 98.3
8500 105.2
9000 111.1
I also measured the rear tire by wrapping a string around the center of the tire tread and came up with 82 3/4".

What is "My dyno"?
What accounts for the lower mph compared to actual gear train calculation?

Offline scottly

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Re: New Record at Bonneville
« Reply #49 on: September 02, 2018, 08:09:29 pm »
.....
My dyno said, with 4th gear and 17:48 sprockets:
8000 98.3
8500 105.2
9000 111.1
I also measured the rear tire by wrapping a string around the center of the tire tread and came up with 82 3/4".

What is "My dyno"?
What accounts for the lower mph compared to actual gear train calculation?
"My dyno" is a Dynojet 200i. ;) My MPH was measured, not calculated.
Don't fix it if it ain't broke!
Helmets save brains. Always wear one and ride like everyone is trying to kill you....

 

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