Latest Idiotic Purchase

[nick5446]

Bought this at auction over the weekend...don't know much about it, but I'm pretty pumped
'71 CB750 drag bike
supercharger
RC cylinders (assumed to be 1000cc)
fuel injected
tons of wacky homemade shit
last registered for street use in 2012

My thought was to get it running and ride it a bit as is, and then either chop that frame or stuff it into a chopped/raked frame with a big ole front end. I'm now reading about it and it seems like it might have been a Russ Collins bike, which kind of makes me want to leave it alone. We'll see...they always sort of speak to you.

[whynot]

Fab.

Might could find out some info by posting on this FB page:

Vintage Drag Bikes Of Days Gone By

You might find good reasons to fix up and leave it alone.

[nick5446]

Fab.

Might could find out some info by posting on this FB page:

Vintage Drag Bikes Of Days Gone By

You might find good reasons to fix up and leave it alone.

Thanks! I'll check them out. I posted it in a CB750 group and got a lot of responses from people who can't read

[Stoneman]

Thanks! I'll check them out. I posted it in a CB750 group and got a lot of responses from people who can't read

Kinda like NESR!

[01xj]

A supercharger and drum brakes on a 40 year old bike. That should be good for a few pucker moments.

[nick5446]

A supercharger and drum brakes on a 40 year old bike. That should be good for a few pucker moments.

Ahem....50 year old bike

[breakdirt916]

I like the way you think

epping still open?

[dontpanic]

Kinda like NESR!

Now who could he be referring to?

[zombie]

Hey Nick,
thats a russ collins bike, I was bidding on it as well.
The value in that bike is keeping as is and trying to get it running.
It's a rare one and only going up in value.
If ya got that running ya may be suprised what that would
bring at mecum in vegas

[nick5446]

Hey Nick,
thats a russ collins bike, I was bidding on it as well.
The value in that bike is keeping as is and trying to get it running.
It's a rare one and only going up in value.
If ya got that running ya may be suprised what that would
bring at mecum in vegas

Yeah I’m learning that. It’s cool for sure. I was talking to Russ’ son about it, and have a call out to the previous owner.

It was just about the top I was willing to spend on it, but I’m glad I got it.

[zombie]

Yeah I’m learning that. It’s cool for sure. I was talking to Russ’ son about it, and have a call out to the previous owner.

It was just about the top I was willing to spend on it, but I’m glad I got it.

Yeah for sure, it was spendy but it's very unique and I think you will do well on it it if ya ever decide to sell.
it is a 71 cb750 and they are getting hard to find and becoming very expensive.
Gimme a shout when ya get it running and I'll come check it out.

[nick5446]

Yeah for sure, it was spendy but it's very unique and I think you will do well on it it if ya ever decide to sell.
it is a 71 cb750 and they are getting hard to find and becoming very expensive.
Gimme a shout when ya get it running and I'll come check it out.

Yeah will do. I don't think it'll take a whole lot to get it going, but the gas tank does appear to be getting soft on the bottom. Do you have any idea what it runs on? I'm assuming race gas of some sort, but since it was a street bike I was thinking maybe high octane pump gas was fine. Then someone mentioned alcohol which scared me.

[zombie]

Doubt very much its alcohol,
Put avgas in it and you should be fine.
Go to a small airport and grab 5 gls
I put it in all my bikes and their good to go

[Kurlon]

I'd ship the tank to http://gastanklining.com/ and have them treat it. They'll be able to get the rust out, stabilize the metal and line it and likely not disturb the paint unless the rot goes through to the surface, even then it'll just be minor pinholes. Expensive, but they do damn good work.

[number9]

I'd ship the tank to http://gastanklining.com/ and have them treat it. They'll be able to get the rust out, stabilize the metal and line it and likely not disturb the paint unless the rot goes through to the surface, even then it'll just be minor pinholes. Expensive, but they do damn good work.

"Most tanks are $599".. man, for the Passport I could get a couple of new tanks for that price

[nick5446]

I'd ship the tank to http://gastanklining.com/ and have them treat it. They'll be able to get the rust out, stabilize the metal and line it and likely not disturb the paint unless the rot goes through to the surface, even then it'll just be minor pinholes. Expensive, but they do damn good work.

I've looked at those guys before but never used them. I've cleaned and lined a bunch of tanks myself...unless this one is terrible that's probably what I'll do.

Thanks for the reminder though...I have a set of tanks for my '46 Indian that I don't want to repair myself.

[Kurlon]

"Most tanks are $599".. man, for the Passport I could get a couple of new tanks for that price

Oh, yeah, when new tanks are available, not worth it. But when they're not... and you're hoping to save the original paint...

[nick5446]

A few developments on getting this hog running...
- I found the phone number for the guy whose name is on the title. He said he sold it a few years ago. He was an older guy and didn't seem particularly interested in telling me about the bike, and he didn't seem to remember a ton. He said he put the bike together but the motor was built by Russ Collins. It used to be a turbo. He didn't remember displacement or what else was done to the motor. He ran it on 93 octane and claimed to have put a ton of street miles on it. He figured he was into it for $20-30k.
- The tank is in better shape than I thought. There's a weird spot on the clear coat at the bottom, but it's solid and clean inside.
- The frame was cut in half and bolted back together to get all this shit to fit
- It cranks over pretty good, but I can't get spark out of it. I'm thinking there's a hidden kill switch or some order of operations I haven't figured out yet.
- It's got a wrinkle tank. These weren't exclusive to Sandcast/K0 bikes, but they're pretty valuable, so that's cool

[Kurlon]

Is it still points ignition? Might need to clean and regap them?

[nick5446]

Is it still points ignition? Might need to clean and regap them?

Good question...I assume not based on the build, but if it had points they'd be behind that supercharger pulley. I can't imagine someone burying points like that. That said, I also haven't found a CDI box yet.