Author Topic: CB750A Street ET bracket drag bike. A year to build it.  (Read 731442 times)

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Offline scottly

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Re: CB750A Street ET bracket drag bike. A year to build it.
« Reply #1850 on: November 11, 2011, 08:22:37 PM »

Thanks again for the post Jon. Keep Team Sam Green alive!!!!!!!!!!!!!
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Offline Tintop

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Re: CB750A Street ET bracket drag bike. A year to build it.
« Reply #1851 on: November 12, 2011, 07:30:00 AM »

Thanks again for the post Jon. Keep Team Sam Green alive!!!!!!!!!!!!!
1+!

Thanks for the update Jon, looking forward to Saturday's results.
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Offline jweeks

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Re: CB750A Street ET bracket drag bike. A year to build it.
« Reply #1852 on: November 12, 2011, 10:27:43 PM »
     Is it alright that the Saturday update comes early Sunday morning? The turnout at this event was large; large as in around 200 bikes racing in Street ET today/yesterday/Saturday. That makes for around 8 rounds of racing to win the Saturday event. We were scheduled  for first round of eliminations to start at noon. We ran the first round of  eliminations as the sun was setting. We got two time trials before lunch. Sam ran two 12.9XX passes and Bill (Calendar Girl) ran a 12.5XX and a 12.4XX.
     We've had some challenges with Sam's Hondamatic. It's looking like the clutch packs in the bike are very tired. Sam staged the bike for  the  first round, applied the  rear brake, and gave it gas when  the  tree started down, just like he has  done many times before. This time, the  bike immediately pulled through the beams, giving him  a -.219 red light. Since the last time trial was around 10:30 this morning/saturday/whatever and eliminations started around 4 PM, the bike was behaving like it was on it's first run of the day. (aka the  motor was very cold) Sam ran a 13.177/111.69mph with the unusual start.
     Bill was next up to the  starting line. He's run  the Hondamatic many times before. With Calendar Girl, he runs 4 gears in the quarter mile. He made 2 shifts and looked for an opponent.  At 3rd gear, he can look all he wants; there will be no opponent in his zip code. That got him off of the throttle for a split second until he realized that he was looking too soon. Did I happen to mention that he hadn't latched his face shield down when he left the starting line.  Not a problem until he looked back. The air currents flung open the face shield, and managed to remove his glasses from his face. Yes, a sacrifice of one pair of prescription glasses to the Valdosta track. He lost the race; lost the  glasses; and nobody could find anything on the track. :(
     Sam bought back into the second round. That happened around 10 pm. Yes, that's around 6 hours between runs. It was like  the 3rd first pass of the day/night/whatever. The  bike was stone cold again. Yes, we warmed up  the  bike in the staging lane before each run. Hondamatics always run  slow on their  first pass of the  day.  I put a 12.98 dial in on the  Hondamatic for the second round.  Sam drove the bike as well as he could; he ran a 13.025/111.90mph. His opponent ran a 10.285/144.09mph on his 9.86 dial in. The missing number was Sam's -.003 redlight. Tomorrow's another  day(?)
     For you tech types, that pass was with a density altitude of 800+ feet below sea level. It was cold. I am tired. Later...


                                                                       Jon Weeks
« Last Edit: November 12, 2011, 10:52:08 PM by JWEEKS »

Offline Bill/BentON Racing

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Re: CB750A Street ET bracket drag bike. A year to build it.
« Reply #1853 on: November 12, 2011, 11:58:18 PM »
Jon pretty much nailed it.Yes,racing a clutch bike for first time in 33 yrs. was a little challenge.We put on a show yesterday....I didn't say a good one,but entertaining for all...me included.Today much better,run was the best so far until I looked back too soon! ::)Bet I never forget to put a visor down again.We've met so many people from all over. Heres some pics:

Team Sam Green's Pit

Huge event,WOW!!

Jim brought two of his. Nice!

Samauto ready to do battle!

She ran 12.463 @ 108.72,60ft 1.906!,1/8 8.009,90.16 mph,.042 R/T2nd qualifying pass
We ran a 12.503 @ 109.40,60ft 2.007,1/8 8.054 @ 89.68,R/t .022 1st round qualifying.
Last pass with all the drama still a 12.827.
 
Sam and I are going to try to run together during qualifying tomorrow/today.
Hope ya'll having fun like us! Team Sam Green has many more stories! ;) ;D ;D,Bill
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Offline dragracer

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Re: CB750A Street ET bracket drag bike. A year to build it.
« Reply #1854 on: November 13, 2011, 06:10:56 AM »
Thanks for the updates men. Nothing like getting details and pictures when you can't really be there yourself.

Did you guys pull the clutch pack on Samauto???

Many say good luck before making an elimination pass but my  my moto when racing is: Ride safe!!! A good day of is racing is when everyone comes home the same way they arrived at the track.

Offline tweakin

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Re: CB750A Street ET bracket drag bike. A year to build it.
« Reply #1855 on: November 13, 2011, 06:23:52 AM »
Love ready this thread daily.  Thanks for the great write ups and for including the pictures.

Offline rklystron

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Re: CB750A Street ET bracket drag bike. A year to build it.
« Reply #1856 on: November 13, 2011, 04:13:10 PM »
Great job documenting the event Jon. I hope at some point you guys captured a bit of video. Great to see you guys out there racing head to head against some of the best in the biz. Keep up the good work. Interested in hearing about your jetting issues and how you resolved them. All the best and be safe. Keep the pics coming please.
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Offline Bill/BentON Racing

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Re: CB750A Street ET bracket drag bike. A year to build it.
« Reply #1857 on: November 13, 2011, 04:18:31 PM »
WOW! Pics and video later.Sam on Cafe Racer TV ,did an interview.We all helped them sort a beautiful cafe bike of Rev. Jim and crew.Ricky Gadson to ride it today and tomorrow for show! 8) Bill
« Last Edit: November 15, 2011, 03:59:46 PM by bellcow54 »
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Offline jweeks

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Re: CB750A Street ET bracket drag bike. A year to build it.
« Reply #1858 on: November 13, 2011, 04:33:23 PM »
                                                            SUNDAAAAAYYYY
     Remember the drag racing ads on the radio? We were a part of a really  big motorcycle drag race this weekend. Made a lot of new friends.
     We slept in a little. We were rewarded with a change in schedule that had us missing our one time trial for the morning.  We arrived just in time for the call for first round of elimination. I put a 12.98 dial in on Sam's Hondamatic. Here's what he did...  http://youtu.be/mYomCwAftGE
     What the video clip doesn't show is the 12.99 that he ran on that pass. With the -.003 redlight still on his mind, Sam overcompensated for that redlight and slept a little too much. 12.997/115.02 mph. For the current gearing, that's about the biggest mph the bike has ever shown. Density altitude was -587 feet below sea level on that pass!
     We bought back in for both bikes. Sam got a 12.94 dial in for the  6 hour and 14 minute delay between rounds one and two. We put new plugs in and warmed up the bike as much  as we could. The air had  gotten much  worse; my  fault for not checking on it before dialing in the bike. The heat of the day lead to a 1302 foot density altitude when Sam ran. Still remembering his last night redlight, Sam was again slow off of the  line. We ran a 13.288/111.88 mph with a wiggle just off of the  launch. We're still looking for that first win light.
     Frank - to replace/fix the clutch  packs on the bike requires splitting the case halves. We didn't have the time between getting to bed at 1 am today and racing at 10:57 am to pull the motor and fix the clutches. This will happen during the upcoming winter months.
     Calendar Girl was entertaining again today. First round Bill ran a 12.632/107.29 mph on a 12.48 dial in. A .105 reaction wasn't enough to beat a .125 over his opponent's dial  in  with a .087 reaction. His second round after buying back in  was a high 12.4 pass with a reaction that combined to make it close at the finish line. Maybe next time. Did I  mention  the gold plated oil dipstick that was missing when Bill got back from the second run? Bill  just keeps giving and giving to that track .... ;)
     Sam was noticed at the  track on Sunday.  It involved journalists, video  cameras, and digital cameras. More to come in other  posts about that  one.   Only Sam could manage that one ..... ;D ;D ;D

Offline dragracer

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Re: CB750A Street ET bracket drag bike. A year to build it.
« Reply #1859 on: November 13, 2011, 04:46:22 PM »
Thanks again for the posts guys. Its been great reading your experiences this past few days. I'm really feeling low about not making that trip but it simply was not meant to be this time. Its does seem that there was a lot of fun in between and during rounds of racing. Again, i personally appreciate the updates from the race.

Wow, never realized that changing clutches in a Matic required splitting the cases. I have learned a lot about these bikes from this thread.

Offline Bill/BentON Racing

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Re: CB750A Street ET bracket drag bike. A year to build it.
« Reply #1860 on: November 13, 2011, 05:09:14 PM »
 ;D We're out to eat,then more ,we promise! Bill
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Offline Old Scrambler

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Re: CB750A Street ET bracket drag bike. A year to build it.
« Reply #1861 on: November 13, 2011, 05:48:14 PM »
Keep it coming............its a great novel............and more chapters to write.
Dennis in Wisconsin
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Offline Tintop

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Re: CB750A Street ET bracket drag bike. A year to build it.
« Reply #1862 on: November 13, 2011, 06:32:36 PM »
Keep it coming............its a great novel............and more chapters to write.

+1,...... who has the publishing rights? ;) :)
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Offline bear

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Re: CB750A Street ET bracket drag bike. A year to build it.
« Reply #1863 on: November 14, 2011, 04:04:20 AM »
Well done Sammy & Bill.
Hope your having a great time.
I'd be lying if I said I new what the bloody hell was going on,  but everybody else seems to so that's the main thing.
We all strive for results, but it's really about competing getting some cred. and drinking as much beer as we can, ;D

Cheers,
Brian
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Offline cobra

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Re: CB750A Street ET bracket drag bike. A year to build it.
« Reply #1864 on: November 14, 2011, 05:12:50 AM »
I hear Sams changing his address to Hollingwood Green

Offline Jim F

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Re: CB750A Street ET bracket drag bike. A year to build it.
« Reply #1865 on: November 14, 2011, 10:29:28 AM »
I had to leave the team a little early to get back home but what a great time I had with Sam, Jon and Bill.............
There where a lot of things that I have never seen nor herd before ( The spider mans Top fuel bike being warmed up)
the Top fuel class and Larry McBride's 5.9 sec run with the Harley breathing down his neck that ran a very low 6 sec run. As Jon said about Larry Mcbrides bike.........a sewing machine on super steroids and the gods of thunder with the top fuel Harleys. ahhhhhhhh the smell of nitro methane.
Pro street bikes running under 7 sec. A bike flipping over backwards just after the start line, although he is fine and not hurt (Other than his pride) his bike went threw the 8th mile traps before it stopped.

All the great people that came up and talked to us about the old school bikes as they got to be known around the pits and
from the announcer in the tower. Introducing Bill on the old school CB750 and or course our own Sam Green all the way from
England on another old school CB.

Sam getting on the Cafe racer TV being interviewed about his CB (The had to powder his head as it was just too shinny) just kidding Sam.
joking around with everyone........getting to talk to Sam and Jon after a year of just reading posts........... Bill getting to grips with a clutch after all these years........Yes Bill it was entertaining but you went out and turned some very respectable times, well done...........it was worth the trip just to see my friends again..........but to go to this event was just the icing on a very tasty cake and I am still enjoying it.......... The announcer I believe said there were over 600 entry's to this event.

Although we didnt get to win any rounds, Sammy had said more than once he was very happy about how the bike has turned out and cant wait to get back in March to have more fun ............I cant wait either
Thanks again guys

Jim



Some pictures of the weekend

Team Sam Greens Pit




Something for Mike Rieck......a head machined from a solid block of billet aluminum..


Our neighbor across the street.........(Thanks for loaning us the cordless drill)


Larry the spider mans top fuel bike just a little naked................


« Last Edit: November 14, 2011, 10:32:13 AM by Jim F »
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Offline Tintop

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Re: CB750A Street ET bracket drag bike. A year to build it.
« Reply #1866 on: November 14, 2011, 01:09:33 PM »
Thanks for posting the pics Jim.  A couple of questions though.

re the billet head, I'm sure I'm not the only one asking - for what?

In the 2nd pic there seems to be haze around the front of the Samauto, was this part of your previous reference, and has something to do with the glare by the trailer. ;D ;D ;D ;D ;D
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Offline dragracer

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Re: CB750A Street ET bracket drag bike. A year to build it.
« Reply #1867 on: November 14, 2011, 01:26:27 PM »
Thanks for posting the pics Jim.  A couple of questions though.

re the billet head, I'm sure I'm not the only one asking - for what?

In the 2nd pic there seems to be haze around the front of the Samauto, was this part of your previous reference, and has something to do with the glare by the trailer. ;D ;D ;D ;D ;D

I'm sure that was a Star Racing Pro Mod head for a GS based motor. Work of art isn't it?

Offline Jim F

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Re: CB750A Street ET bracket drag bike. A year to build it.
« Reply #1868 on: November 14, 2011, 02:07:50 PM »
Hey Tintop
The glare you see if a finger print on the lens of the camera..............if you look at all the pictures its there......sorry

the billet head is much stronger than a cast head and if you have extracted the very best porting mods on a head you can
reverse engineer that head and digitize the porting with a CMM. Then you can make the very best heads out of billet aluminum
on a 5 or 8 axis CNC machining center and repeat these heads over and over.
all it takes is money and this head was a work of art although it had NOT been polished or the valve sets put in

« Last Edit: November 14, 2011, 02:58:23 PM by Jim F »
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Offline jweeks

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Re: CB750A Street ET bracket drag bike. A year to build it.
« Reply #1869 on: November 14, 2011, 02:41:41 PM »
Yes it was, and yes it is.... (cylinder head)

     I'm back home on 3 hours sleep last night/this morning, when ever... I'm with a crew that really can talk, and talk, and tell a tale or two.  ;) Missed recalling the entire plane ride back. Just vaguely remember the 6 hours of driving that I've done today. Sam needs a younger crew to keep up with him better.....? Spent last night eating a meal and listening to stories of British motorcycle drag racing with 3 of Sam's friends that we happened upon. Talked with another couple of his European friends there before we left. (Applebee's)
     Saturday, I walked with Sam over to watch the top fuel bikes qualifying. Went through the manufacturer's midway to get there. Sure enough, Sam gets himself and I invited to the viewing perch on top of one of the display trailers for the Top Fuel passes. Best seat in the house!
     In the staging lanes, waiting to race, Sam met at least 10 different people each time he went up there. Forum members, curious racers, Top Fuel champions, etc. etc. came to chat. I've never met so many people at any one event! As a racing ambassador for the SOHC4's, Sam has no equal! Lot's of very big names in the performance industry checking out examples of the bikes that got their businesses started.
     For a bike with the challenges that we've faced, we've got a great staging lane reputation. Frank can especially appreciate this: At least 3 bikes that were initially parked near Sam's and Bill's bikes decided to relocate to the back of the pack.... I admit that I helped a little with the line - Our last pass yesterday was a 12.99 on our 12.98 dial. We're talking major names in the region deciding that it just wasn't worth the chance to have to race us in the early rounds. Bill and Sam have learned to recognize the politics going on around us before the serious racing starts.... ;D
     I made a promise that we would continue to get better. This will happen. Serious plans have already been made. The bike will be quicker in March or when ever the next major event occurs that Sam can afford to attend. If the numbers sound like what we ran in March, you need to remember that we ended up racing every round with the bike having cooled off for at least 5 hours. A cold Hondamatic is almost always about a half a second slower in the quarter mile than it will be after being warmed up enough. Sam ran a 12.5 in the practice test and tune period on Friday. That was the only day that we could run more than once every 5+ hours.
     The air quality was very good on Friday and early in the day for both Saturday and Sunday. We now have a air measuring gage that gives us a density altitude reading every pass we make. You can read elsewhere just what goes into that value. For the casual reader, just know that negative values (indicating below sea level air conditions) means that everybody goes very quickly down the track making a lot of horsepower. The bigger the positive value means that it's warmer and the air makes less power as that number gets bigger. Records were broken this weekend because the air was so good helping a well prepared track.
     I've got to eat, sleep, and try to get back to my normal work life. Even after all this, I'm still a little wound up. Wonder why ;)

                                                                                   Hondamatic

Offline dragracer

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Re: CB750A Street ET bracket drag bike. A year to build it.
« Reply #1870 on: November 14, 2011, 06:18:53 PM »
Yes it was, and yes it is.... (cylinder head)

     I'm back home on 3 hours sleep last night/this morning, when ever... I'm with a crew that really can talk, and talk, and tell a tale or two.  ;) Missed recalling the entire plane ride back. Just vaguely remember the 6 hours of driving that I've done today. Sam needs a younger crew to keep up with him better.....? Spent last night eating a meal and listening to stories of British motorcycle drag racing with 3 of Sam's friends that we happened upon. Talked with another couple of his European friends there before we left. (Applebee's)
     Saturday, I walked with Sam over to watch the top fuel bikes qualifying. Went through the manufacturer's midway to get there. Sure enough, Sam gets himself and I invited to the viewing perch on top of one of the display trailers for the Top Fuel passes. Best seat in the house!
     In the staging lanes, waiting to race, Sam met at least 10 different people each time he went up there. Forum members, curious racers, Top Fuel champions, etc. etc. came to chat. I've never met so many people at any one event! As a racing ambassador for the SOHC4's, Sam has no equal! Lot's of very big names in the performance industry checking out examples of the bikes that got their businesses started.
     For a bike with the challenges that we've faced, we've got a great staging lane reputation. Frank can especially appreciate this: At least 3 bikes that were initially parked near Sam's and Bill's bikes decided to relocate to the back of the pack.... I admit that I helped a little with the line - Our last pass yesterday was a 12.99 on our 12.98 dial. We're talking major names in the region deciding that it just wasn't worth the chance to have to race us in the early rounds. Bill and Sam have learned to recognize the politics going on around us before the serious racing starts.... ;D
     I made a promise that we would continue to get better. This will happen. Serious plans have already been made. The bike will be quicker in March or when ever the next major event occurs that Sam can afford to attend. If the numbers sound like what we ran in March, you need to remember that we ended up racing every round with the bike having cooled off for at least 5 hours. A cold Hondamatic is almost always about a half a second slower in the quarter mile than it will be after being warmed up enough. Sam ran a 12.5 in the practice test and tune period on Friday. That was the only day that we could run more than once every 5+ hours.
     The air quality was very good on Friday and early in the day for both Saturday and Sunday. We now have a air measuring gage that gives us a density altitude reading every pass we make. You can read elsewhere just what goes into that value. For the casual reader, just know that negative values (indicating below sea level air conditions) means that everybody goes very quickly down the track making a lot of horsepower. The bigger the positive value means that it's warmer and the air makes less power as that number gets bigger. Records were broken this weekend because the air was so good helping a well prepared track.
     I've got to eat, sleep, and try to get back to my normal work life. Even after all this, I'm still a little wound up. Wonder why ;)

                                                                                   Hondamatic

Great job on getting those dial ins nailed Jon. Its been a pleasure seeing this bike and crew progress over the last year of two. Looking forward to seeing all of you in March of next year. And yes, i do intend to bring some form of an SOHC down with me. You guys are having way to much fun and i want to be a part of the action.

Congratulations to Team Sam Green!!!!!!!!

Offline dragracer

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Re: CB750A Street ET bracket drag bike. A year to build it.
« Reply #1871 on: November 14, 2011, 10:52:49 PM »
Bill about to make a pass.

Offline Retro Rocket

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Re: CB750A Street ET bracket drag bike. A year to build it.
« Reply #1872 on: November 15, 2011, 12:18:24 AM »
What is it with old blokes and white leathers..... :o ;D :P
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Offline BLUE71TURBO

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Re: CB750A Street ET bracket drag bike. A year to build it.
« Reply #1873 on: November 15, 2011, 12:51:57 AM »
What is it with old blokes and white leathers..... :o ;D :P

         It matches their HAIR !  If they have any !     
Remember; Before you can be old and wise, you must first be young and stupid !

Offline voodooracer

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Re: CB750A Street ET bracket drag bike. A year to build it.
« Reply #1874 on: November 15, 2011, 04:21:15 AM »
 WOW, thanks for the great story! So glad to hear everyone had a great, safe time.