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Author Topic: XV750 - "The Rust Bucket" - #500x500 Challenge  (Read 8143 times)

Offline treitz

  • Posts: 1286
Re: VX750 - Rat Bob - #500x500
« Reply #10 on: Oct 22, 2015, 12:17:14 »
hahaha PERFECT

Offline treitz

  • Posts: 1286
Re: VX750 - Rat Bob - #500x500
« Reply #11 on: Nov 12, 2015, 13:30:52 »
Alright... I FINALLY got around to touching this bike. Pulled the carbs off real quick to go through. Going to start by ordering a battery, cleaning the carbs, and cleaning out the gas tank to see A) if I can get it running, and B) whether or not it needs any wiring attention.

Notes:
- Externally - the carbs appear to be in great shape.
- Internally - Carb #1 was super clean, carbs #2 was super gunked up with old gas.

Questions:
- There are these two air intake hoses on the frame running into top side of the carbs. Is it safe to assume this is a channel for air into the diaphrams via the air filter box? Never seen anything like this before.

Challenges:
- Bike didn't come with a key. Guess I need to track down the identification number on the ignition and see if I can order one before busting the gas tank open with a screw driver :)

Offline treitz

  • Posts: 1286
Re: XV750 - Rat Bob - #500x500
« Reply #12 on: Nov 23, 2015, 13:55:44 »
Quick update...

Carbs are cleaned and back on the bike.
Starter is dead. No big surprise here... just trying to decide if it's worth trying to rebuild, or if I just buy a new one.
Replacing fluids as we speak.
Going to start testing electrical soon. Had to order a missing solenoid. Oh and the dead starter doesn't help.
Chatted with the local rat rod experts and they have some crazy ideas. This thing could quickly spiral out of control. So first things first, see if it'll run!

Offline focusinprogress

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Re: XV750 - Rat Bob - #500x500
« Reply #13 on: Nov 23, 2015, 15:47:22 »
on the gas cap, it's very easy to access the mechanism with a simple 90* pic to get it open, then you can just remove the lock cylinder with two phillips screws and pull all the tumblers out and reinstall....then any key or screwdriver or popcan tab or a coin should be able to open it. lol. I remove the tumblers even when I have the matching key.
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Offline treitz

  • Posts: 1286
Re: XV750 - Rat Bob - #500x500
« Reply #14 on: Nov 23, 2015, 15:48:29 »
on the gas cap, it's very easy to access the mechanism with a simple 90* pic to get it open, then you can just remove the lock cylinder with two phillips screws and pull all the tumblers out and reinstall....then any key or screwdriver or popcan tab or a coin should be able to open it. lol. I remove the tumblers even when I have the matching key.

Right on. I've heard the removing tumbler trick before, but didn't realize the locks were to easy to pic. I have some 90* pics, so I'll give it a shot!

Offline focusinprogress

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Re: XV750 - Rat Bob - #500x500
« Reply #15 on: Nov 23, 2015, 16:04:05 »
here's where I learned it many builds ago

http://www.xs650.com/forum/showthread.php?t=23824
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Offline treitz

  • Posts: 1286
Re: XV750 - Rat Bob - #500x500
« Reply #16 on: Dec 09, 2015, 12:52:27 »
What do you all know about starters that I don't know? Here's the story...

I tried jumping the starter on this bike like I have many before. Brand new 12v battery straight to the starter wire and I got nothing. Bypassed the starter wire and went straight to the post on the starter with jumper cables and got nothing. Removed the starter, bench tested, same results. So I concluded that the starter was dead.

Ordered a brand new 4 brush starter from eBay. Completely installed it and tested it - the exact same results. Mind blown.

Tested with brand new 12v battery AND a 12v jump starter pack. Both to the starter wire, as well as directly to the starter post. eBay seller promises product is brand new and was tested prior to sale.

I'm baffled to say the least. Can you think of any other tests I should try before sending it back?


Edit: The starter is fine. The battery I bought is apparently bad, or doesn't have enough juice to turn it over. Weird because I bought the same battery for my first XS850. Regardless, on to the next thing...
« Last Edit: Dec 15, 2015, 12:16:27 by treitz »

Offline treitz

  • Posts: 1286
Re: XV750 - Rat Bob - #500x500
« Reply #17 on: Dec 17, 2015, 12:23:02 »
Wiring.....

Alright... so I started digging in to wiring last night and I've hit a bit of a wall. I know that you are probably going to tell me to do the simplified wiring, which I may end up doing. I just wanted to see if the stock harness was intact enough to save me the time.

I hooked everything up with my GOOD battery. New ignition switch, new (used) solenoid. And here's where I'm at...

I have 12 volts to my ignition switch, and 12 volts coming out of the ignition switch when turned on. Check!

I have power to and from all 4 fuses (lights, ignition, etc.)

I have power to and from the kill switch (red/white).

I DO NOT HAVE POWER TO THE STARTER BUTTON OR TO THE SOLENOID (blue or red).

So I started working backward to see where the power stops. I think I tracked it down to two relay's... but I'm not sure.

Starter relay - Power to one red/white, no power to the other red/white
Starter cut out relay - Power to one red/white, no power to the other red/white

Any input appreciated!

Offline Hurco550

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Re: XV750 - Rat Bob - #500x500
« Reply #18 on: Dec 17, 2015, 12:28:54 »
Ditch the starter. Have a friend push you to start it.... if you did a diesel conversion, you wouldn't even need an ignition.... glad I can help =).   Seriously though, I don't have much to add as far as the electronics. Sorry.. maybe Matt will chime in soon
"If you just picked up a drug habbit instead of a kawasaki triple at least you could get high while you waste money"
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"much ingenuity with a little money is more profitable and amusing than much money without ingenuity" - Arnold Bennett

Offline treitz

  • Posts: 1286
Re: XV750 - Rat Bob - #500x500
« Reply #19 on: Dec 17, 2015, 12:36:58 »
There's a guy on the Virago Tech forum who outlined a simplified wiring diagram. I may end up going that route. Just wanted to see if this stock harness was going to be easy or not first. Looks like not.