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Author Topic: Who has the vintage drag bikes, making a list.  (Read 3738 times)

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Offline gschuld

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Who has the vintage drag bikes, making a list.
« on: April 05, 2015, 09:06:24 AM »
I'd like to put together a list of current owners of vintage cb750 based drag bikes, especially custom framed bikes.  What you have, what's in it, what shape is it in, your plans for it.  Photos.  etc. 

Leads to locate and document others would be appreciated as well.

Thanks,

George

 
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Offline Bill/BentON Racing

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Re: Who has the vintage drag bikes, making a list.
« Reply #1 on: April 05, 2015, 01:19:22 PM »
OK, cool. I now own the one in this picture. Was formerly owned by Keith Robinson, Honda dealer in Pa. back in the day. Won C gas  one or more years. 9.35 @ 135mph. More later,  Bill Benton
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Offline gschuld

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Re: Who has the vintage drag bikes, making a list.
« Reply #2 on: April 06, 2015, 07:05:01 AM »
I know this one is owned by 195suz here on the forums. A barn find, and doesn't sound like much is known about it.  196suz subsequently located a vintage drag motor with a bunch of RC parts in it. 

http://forums.sohc4.net/index.php/topic,112999.msg1270685.html#msg1270685

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Offline jaguar

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Re: Who has the vintage drag bikes, making a list.
« Reply #3 on: April 06, 2015, 12:38:27 PM »
Cool idea.
I know I have been mildly looking for a special framed drag bike.
Just think they are interesting.
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Offline 195suz

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Re: Who has the vintage drag bikes, making a list.
« Reply #4 on: April 06, 2015, 02:20:50 PM »
I have gathered a bunch of parts that I need for this project but currently I can not find the pistons I need 73.00 mm. I had posted this before and thought I had found some but did not pan out.
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Offline bwaller

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Re: Who has the vintage drag bikes, making a list.
« Reply #5 on: April 06, 2015, 02:34:56 PM »
Have them made.
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Offline cbr954

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Re: Who has the vintage drag bikes, making a list.
« Reply #6 on: April 06, 2015, 02:59:03 PM »
Dynoman just came out with new 72mm and they told me they had some 73mm in the works.  They will also make custom pistons up to 73.5mm.
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Offline gschuld

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Re: Who has the vintage drag bikes, making a list.
« Reply #7 on: April 07, 2015, 08:08:22 AM »

195suz,

Thanks for checking in.  Yes, as cbr954 mentioned Dynoman can have them made for you up to 73.7mm!  http://dynoman.net/engine/pistons/custom.html#cb750       Others can too with the right incentive.

Back on subject :).  I located this one in a private collection in Georgia.  I believe that it was bought by the current owner around 2007.  It is said to be one of the three "Dragstars" built and sold ready to race by RC Engineering for the 1973 season.  It reportedly held several national records that year.  RC Engineering also sold these bikes as individual components right through unassembled kit form with everything needed.  So although the frame, and major parts appear authentic(an may very well be) it MAY not actually be the bike he thinks it is.  I am hopefully going to be able, with some help, track down the history of this bike and confirm which one it is. 

Options are:

1-The Steakley brothers bike out of Texas:  RC drove the bike himself to a few US national records
2-The Adams bike out of Alberta Canada:  again RC drove it himself to a few Canadian national records.
3-The Buzzsaw: an in house RC Engineering campaigned bike.

4-A double dragster assembled from a whole or partial RC "Dragstar" kit.

5-A double dragster assembled from a chassis bought directly from Ralph Muldoon(he made the early catalog chassis for RC) and built an non RC component bike closely modeled after the RC Dragstar doubles.

Stampings on the chassis neck and the cases/cylinders/heads would help narrow the possibilities.

Anyway, it's an awesome looking bike and looks nice on hardwood floors in a climate controlled environment.

George
         
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Offline Jim F

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Re: Who has the vintage drag bikes, making a list.
« Reply #8 on: April 08, 2015, 03:52:27 AM »
It would look even better on my hard wood floors
Nice
Jim
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Offline SBR-CB400F

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Re: Who has the vintage drag bikes, making a list.
« Reply #9 on: April 08, 2015, 11:36:45 PM »
It would look best back at the drags making very smokey way past 60' burn out passes

Adam
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1975 cb400f, 14.435 @ 89.01MPH at Willowbank Street Series 28 March 2015
1976 cb400f Nostalgia Drag Bike.
1.871 @ the 60'
8.632 @ 78.44 mph over the 1/8.
13.822 @ 91.91 mph over the 1/4
1977 cb750f2 Resto Project
1973 cb750k4 Chopper project
1971 cb750k1 Restoration Project
1975 cb750f1 Drag bike
1.549 @ 60'
4.425 @ 330'
6.895 @ 98.05MPH  1/8 mile
10.993 @ 116.76MPH  1/4 mile

Offline Don R

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Re: Who has the vintage drag bikes, making a list.
« Reply #10 on: April 10, 2015, 09:20:58 PM »
 This is my K2 resto project drag bike, it was  locally owned and raced by an old friend that we lost a couple years ago. The big 4 Bike Shop. It's got an ARD mag, welded stroker and a big bore kit. Nicely ported with an Engle cam. I think it's 1116 or 1124cc. I wasn't positive on the bore. The rear rim was the rolled rim that belonged on the sandcast bike I bought from the same estate. The fiberglass tank and wheelie bars got away before I bought it. cb400f handlebars with a set of points and a corded rubber strip for a rider off kill switch. This was the day it came home with me.




« Last Edit: April 10, 2015, 09:58:47 PM by Don R »
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Offline Don R

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Re: Who has the vintage drag bikes, making a list.
« Reply #11 on: April 10, 2015, 09:28:03 PM »
 It's on the back burner right now, I installed a hayabusa starter so I don't need rollers to start it. The kicker was broken so I replaced it all but it still kicks hard even with no plugs. Not sure why. The engine looked nice inside except for a couple of wayward o rings. I'm pretty sure it was freshened and not raced much afterwards. The parts inside look like MTC.
 It's got a 16" rear with a 5" slick now due to me needing the rear rim to return to it's sandcast home. 
 I've been looking for pictures of it for reference but the PO was divorced a couple times and all the pictures are missing. I had a big 4 tee shirt once but I can't remember the logo exactly.
« Last Edit: April 10, 2015, 09:34:15 PM by Don R »
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Offline Retro Rocket

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Re: Who has the vintage drag bikes, making a list.
« Reply #12 on: April 11, 2015, 02:14:47 AM »
Don, does the hyabusa starter just bolt straight up...?
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Offline johno

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Re: Who has the vintage drag bikes, making a list.
« Reply #13 on: April 11, 2015, 03:45:55 AM »
Good question Mate,  just what I was thinking ;D

Don I am looking for a decent starter option as the rollers a bit heavy, Dennis used a CB 900 starter , keen to know how the Busa measured up.
cheers johno
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Offline Don R

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Re: Who has the vintage drag bikes, making a list.
« Reply #14 on: April 13, 2015, 09:21:39 PM »
 I posted in the high perf starter thread.
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Offline Retro Rocket

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Re: Who has the vintage drag bikes, making a list.
« Reply #15 on: April 14, 2015, 12:02:06 AM »
Thanks Don... ;)
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750 K2 1000cc
750 F1 970cc
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If You can't fix it with a hammer, You've got an electrical problem.

Offline jaguar

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Re: Who has the vintage drag bikes, making a list.
« Reply #16 on: April 14, 2015, 05:27:19 AM »
Carpy sold a drag frame a few years ago.  Kick myself for not buying it.
Last I heard the owner was collecting parts for it.  Don't think he is a member here, but is on some chopper boards.
Ill see if I can dig up some pictures.
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