Author Topic: How to disable the CB750 (Read 4445 times)

jawntybull · « **on:** June 21, 2011, 06:56:23 AM »

Based on my recent experience in bringing a '77 model back to life:

Q: how can you disable this robust machine for a week or more, using a screwdriver in less than 10 seconds?

singedebile · « **Reply #1 on:** June 21, 2011, 07:06:36 AM »

should it be something that is hard to tell upon inspection?
,or i would say something like unscrew the ground
or fiddle with the carbs in some way

EMS541A · « **Reply #2 on:** June 21, 2011, 07:08:20 AM »

Quote from: jawntybull on June 21, 2011, 06:56:23 AM

Based on my recent experience in bringing a '77 model back to life:

Q: how can you disable this robust machine for a week or more, using a screwdriver in less than 10 seconds?

I think this might be the first person I've seen trying to STOP a CB750 from running...

madmtnmotors · « **Reply #3 on:** June 21, 2011, 07:13:27 AM »

Oh yeah, I can think of half a dozen ways just off the top of my head, probably dozens if I were to stand next to the bike and think about it. I can do some damage, even without tools!

Operator · « **Reply #4 on:** June 21, 2011, 07:21:15 AM »

Twist off the ignition wire....

Bankerdanny · « **Reply #5 on:** June 21, 2011, 08:20:08 AM »

Well, I would need a screw driver and a pliers, but I would disconnect the condensers from the points.

BobbyR · « **Reply #6 on:** June 21, 2011, 08:25:02 AM »

Pop off the sidecover and remove the fuses.

HondaMan · « **Reply #7 on:** June 21, 2011, 08:40:01 AM »

Take the battery with you? It makes the bike a 500+ lb. paperweight.

Gordon · « **Reply #8 on:** June 21, 2011, 08:57:23 AM »

Quote from: jawntybull on June 21, 2011, 06:56:23 AM

Q: how can you disable this robust machine for a week or more, using a screwdriver in less than 10 seconds?

How can you decide how long it's going to take to repair the damage you caused? I suppose if you opened up the ignition cover and damaged the advance mechanism beyond repair it could take a week or more to get a replacement, but if the owner has a spare it's a quick fix.

Even if you damage the engine enough that it requires removal and disassembly to repair, it wouldn't take that long if the parts are at hand or available for purchase.

How's this:

Put it in gear, wedge the screwdriver between the terminals on the starter solenoid, and send it off riderless over the edge of a cliff or at least into fast-moving traffic. The resulting damage would probably take a week or more to repair.

DJ_AX · « **Reply #9 on:** June 21, 2011, 08:58:11 AM »

just snip a few wires somewhere?

Funny ... something like this was just jokingly brought up in a recent conversation....
A buddy of mine's "best friend" was preparing to sell him his old bike.
My buddy took his classes, got his cy license... and on the day he was going to pick it up, his "best friend" changed his mind about selling it.
I told my buddy I could show him which screws to turn if he was interested in making it less desirable to his friend.

TwoTired · « **Reply #10 on:** June 21, 2011, 09:02:00 AM »

1. Use the screwdriver the bridge the hot side of the main fuse contact to frame ground. In about ten seconds the wire harness should smoke/melt, maybe even burst into flames.
Should take about a week or more to effect repairs.

2. You could also insert a screwdriver between the chain links at the top side and leave it there. It's disabled indefinitely. If ignored and riding attempted, it'll take a week or more restore.

3. Borrow a small child and place it next to the machine and the screwdriver. Walk away.

4. disconnect the battery. If you want stealth too, put the cable back on with a nylon screw and a card board insulator sandwiched.

We have ways.

Spanner 1 · « **Reply #11 on:** June 21, 2011, 09:05:20 AM »

1. Get stopped for speeding, 2. Threaten the cop with your screwdriver for 10 seconds. 3. Get jailed immediately for a week.

I like TT's #3..... might be a winner !

Irukandji · « **Reply #12 on:** June 21, 2011, 09:41:37 AM »

Sorry but I have to ask

WHY??

Quote from: jawntybull on June 21, 2011, 06:56:23 AM

Based on my recent experience in bringing a '77 model back to life:

Q: how can you disable this robust machine for a week or more, using a screwdriver in less than 10 seconds?

Skunk Stripe · « **Reply #13 on:** June 21, 2011, 10:13:33 AM »

I am guessing it is his bike and he wants to make sure no one can start it and ride off.

OldSchool_IsCool · « **Reply #14 on:** June 21, 2011, 10:36:25 AM »

Assuming your goal is theft prevention and you want to bring it back to life after the week is up:

1. remove battery
2. disconnect points &/or coils
3. pocket the fuses
4. empty gas tank & float bowls
5. deflate tires
6. Chain it to a pole
7. remove the drive chain
8. Take the plug caps with you

Skunk Stripe · « **Reply #15 on:** June 21, 2011, 10:57:27 AM »

That is always possible!

HondaMan · « **Reply #16 on:** June 21, 2011, 11:37:13 AM »

I've seen this: turn the air screws in until they stop. It's almost impossible to start the bike, if it is in good condition (if the vacuum hoses leak, though, it will still run...).

jawntybull · « **Reply #17 on:** June 21, 2011, 01:01:49 PM »

Quote from: Irukandji on June 21, 2011, 09:41:37 AM

Sorry but I have to ask

WHY??

Quote from: jawntybull on June 21, 2011, 06:56:23 AM
Based on my recent experience in bringing a '77 model back to life:

Q: how can you disable this robust machine for a week or more, using a screwdriver in less than 10 seconds?

Wow - I was asking as a bit of a joke but what great replies - this is what happens when you go to sleep in Australia and wake up the next morning to check your posts...

Ok, so my answer is - grab a screwdriver and remove one of the drain plugs from one of the carbies. If you want to totally disable the bike remove all four. The drain screws are special items, and you can't just plug the holes with M6 bolts because the valve seat is a special taper at the end of the screw. Without these screws the carbies spew fuel, and if you plug the holes any other way fuel floods up inside the carbies and runs into the airbox. Either way you're not getting far without setting yourself alight.

My fun question was in response to me being off the road for a week due to the loss of one of these screws. Of course you can always buy a whole float bowl from Honda, or order the screws from a site in the US - either way you're off the road for a week.

I reckon my answer is a bit getter than some of the ones like smoking the wire harness - now that's a bit drastic!

pat english · « **Reply #18 on:** June 21, 2011, 03:55:51 PM »

this sucks...this is a joke thread.and look at all the responses...i have a REAL question posted up right now..22 views and no responses..IS THIS WHAT THIS FOURUM IS ABOUT!!!...HUH!!???

AHHHHHHHHHH....

WarwickE36 · « **Reply #19 on:** June 21, 2011, 04:02:52 PM »

Threaten him with a screwdriver Pat

pat english · « **Reply #20 on:** June 21, 2011, 04:06:39 PM »

hahahaha....i would never do that

TwoTired · « **Reply #21 on:** June 21, 2011, 04:08:34 PM »

Put Pat and a small child with screwdriver in the same room. Lock the room and walk away.

jk

oldhondarider · « **Reply #22 on:** June 21, 2011, 04:08:58 PM »

Get him Pat....

ok..ok... let's quit F'n around and go help Pat out.

pat english · « **Reply #23 on:** June 21, 2011, 04:25:16 PM »

Quote from: oldhondarider on June 21, 2011, 04:08:58 PM

Get him Pat....

ok..ok... let's quit F'n around and go help Pat out.

hahahaha i love the internet..

jawntybull · « **Reply #24 on:** June 21, 2011, 05:04:41 PM »

I just have this image of this great big tough superbike being held to ransom by this little itty bitty screw... a bit like the big giant of a bloke held down by a twisted grip on his little pinkie...

splitt · « **Reply #25 on:** June 21, 2011, 08:06:39 PM »

To make troubleshooting more difficult, remove the plug caps. Use the screwdriver to unscrew the threaded piece inside of the plug caps and remove the resistors, then replace the threaded piece.

jawntybull · « **Reply #26 on:** June 22, 2011, 03:17:40 AM »

Ah, I tried that. If you block the drain hole and the outlet tube the fuel continues to flow until it floods inside the carbies. The outlet tube must also act as the vent that equalizes bowl pressure and allows the floats to work. You have to seal the seat with the drain screw without blocking the outlet tube.

John, sent from my smartphone

Operator · « **Reply #27 on:** June 22, 2011, 03:50:00 AM »

Pat, what question you need answered? You have a few up there

70CB750 · « **Reply #28 on:** June 22, 2011, 03:52:54 AM »

Remove carb needles? You dont need a screwdriver to do that either - hmm, at least not on 1970.

Operator · « **Reply #29 on:** June 22, 2011, 07:08:00 AM »

Put KAWASAKI tank badges on it!!!!:)Lol

scw1984 · « **Reply #30 on:** June 22, 2011, 02:05:23 PM »

Quote from: TwoTired on June 21, 2011, 09:02:00 AM

1. Use the screwdriver the bridge the hot side of the main fuse contact to frame ground. In about ten seconds the wire harness should smoke/melt, maybe even burst into flames.
Should take about a week or more to effect repairs.

2. You could also insert a screwdriver between the chain links at the top side and leave it there. It's disabled indefinitely. If ignored and riding attempted, it'll take a week or more restore.

3. Borrow a small child and place it next to the machine and the screwdriver. Walk away.

4. disconnect the battery. If you want stealth too, put the cable back on with a nylon screw and a card board insulator sandwiched.

We have ways.

+1 on number 3

flybox1 · « **Reply #31 on:** June 22, 2011, 02:14:24 PM »

Quote from: pat english on June 21, 2011, 04:25:16 PM

Quote from: oldhondarider on June 21, 2011, 04:08:58 PM
Get him Pat....

ok..ok... let's quit F'n around and go help Pat out.

hahahaha i love the internet..

PAT?!?!?

pat english · « **Reply #32 on:** June 23, 2011, 03:02:19 AM »

hahahahaha,dood thats what i look like!!!!

754 · « **Reply #33 on:** June 23, 2011, 08:47:47 AM »

pull the synch screws, took me a month to find out I lost one..

News:

Author Topic: How to disable the CB750 (Read 4445 times)

pat english

pat english

pat english

pat english