RD400 - burnt ground wire & toasted rectifier - Page 2 - Stromtrooper Forum : Suzuki V-Strom Motorcycle Forums
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Other Motorcycles Forum for you to discuss anything about any other motorcycles. Good place for former (and soon to be) V-Strom owners to keep on the site even though they are without a strom.

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  #11  
Old 06-19-2012, 11:13 AM
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I learnt how to use the multimeter a little better over the last few days, in series between the NEG battery post and the NEG wire I was getting ~.02A drain.

Frustrated and resigned to the fact that it needs more attention, I proceeded to disconnect every wire in the bucket one at a time while watching the meter and found one red/yellow wire that lowered the 'leakage' from .02A to .01A when unplugged.

Then disconnected *every* other wire on the bike while watching the meter and found the only thing that got it to 0.0A was disconnecting the fuse box. I'm beginning to think a little 'leakage' may be 'normal'

I'm in the process of checking all the wiring to the handlebar switches and gauges, found a few dodgy wires. I still have to get inside the alternator to check it.

The up-side, I'm getting very good at dis- and re- assembling a 33 year old Yamaha. And my fancy new Regulator/Rectifier arrived yesterday, but I'm going to try to get everything sorted before I install it though.

I really appreciate the help, and kind words.

You guys have been more help than the 2 stroke forum, stands to reason I suppose, V-Stromers are generally good people!
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  #12  
Old 11-11-2012, 09:41 AM
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I have a UK RD400F with a similar problem to yours,bike starts and runs okay but blows the 10A brown wire fuse when I turn on the ignition.This means I have no oil/neutral light or horn/indicators.Did you find the cause of your problem,cheers
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  #13  
Old 11-11-2012, 01:11 PM
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Thumbs up RD-400

I bought one in 1977 and sold it in 2008 to make room for the Strom. I loved that bike.

[IMG][/IMG]
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  #14  
Old 06-05-2013, 12:43 PM
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I ended up rebuilding the entire wire harness, running new ground wires and repairing a dozen or so crusty old wires with broken insulation. 35 years had taken its toll, especially in the headlight shell

Quote:
Originally Posted by tarjla View Post
I have a UK RD400F with a similar problem to yours,bike starts and runs okay but blows the 10A brown wire fuse when I turn on the ignition.This means I have no oil/neutral light or horn/indicators.Did you find the cause of your problem,cheers
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  #15  
Old 06-05-2013, 01:24 PM
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my 1st bike, i kept for 2 weeks and traded it for a '77 rd400. i would love another one...HINT
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  #16  
Old 12-07-2013, 07:55 PM
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Smile 79 RD 400 Daytona Special, Stock

I have a 79 RD400 Daytona Special, a little over 10000 original miles in very good shape.

Got it a couple of years ago from the dad of a friend of mine (he got it in 1982), and since then have done maintenance to keep it running, but I'm not sure where to go with it (from a maintenance perspective).

Might sell it, might not, but anyone know a good online source of maintenance information? The sites I've seen aren't setup like stromtrooper, making quality, indexed maintenance information tough to find in them, or they're geared toward modified bikes. Maybe I've overlooked some?

So, if you know of a source, or just personally have experience with these bikes and want to lend a fellow rider/stromtrooper a hand (or want to encourage me to sell it), please feel free to chime in.

Thanks
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  #17  
Old 12-26-2013, 11:00 AM
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Howdy, I just saw this post. Sounds like you've got a nice bike...

I strongly recommend doing a pressure test on the crank case to ensure the seals are still holding... after ~35 years you are risking piston seizure if you have an air leak. Clean carb internals are also worth paying close attention to, a slightly plugged jet can cause a lean condition, also risking piston seize. It's well worth taking the time to make sure the motor is tight before riding much, be prepared to tear the motor down for new seals, sooner or later.

Ignition timing is critical on these also, no more than 2.0mm BTDC, most seem happy with 1.8mm BTDC

These bikes are a lot of fun, but from what I've experienced, you have to get them -just-right- or you end up with holes in your pistons! <read $$$>

www dot 2strokeworld dot com is a pretty good source, it's not as nice as this site, but there are some very knowledgeable people on it.

www dot usa2strokers dot com is aonther active board

And there are quite a few two stroke fans in the NorCal area... There may be help nearby.
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  #18  
Old 12-26-2013, 11:56 AM
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I think another preventative maintenance measure we should all do is ensure the 3-way connector (stator wires to RR) is clean and tight (or connector removed and wires soldered). This connection can get hot and melt the connector. Also, the RR should be removed and cleaned so it makes a good ground to the frame it's mounted on.
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  #19  
Old 12-27-2013, 08:22 AM
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A few years ago in Walnecks there is a CALI guy who specializes in RD stuff

Including modern electronics and ignitions
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