Hard to start when its hot.

[KEITH KRAUSE]

I would not recommend disconnecting the battery while the bike is running. The battery provides a buffer that absorbs the voltage production and smooths out the peaks in the electrical system. Any EEs care to elaborate?

So do you think it would hurt to test just long enough to get the motor hot?

[Don Lobacz]

I would not recommend doing it at all, ever. I was hoping some of the electrical technicals would jump in and fill in details.

[hoyterb]

Kieth What Don is saying is the R/R will "see" a completely dead battery and try to charge it.In other words the voltage output allowed by the R/R will be about 16-17 volts and max amps which WILL let the smoke out of the electrics.

[Motorcyclemodeller]

I have an 82 750EZ, it does the same thing for as long as I can remember. Even when mine is cold it does not crank as fast as my brothers 83 1100ED. I replaced all main cables with 6 AWG power wire and used gold plated connectors, new battery, nothing has changed it. Now my motor is highly modified with high compression, so this is a contributing factor. When my bike is hot, I leave it until the motor temp comes down to about 100.......no choke....no throttle....hit the starter and up she goes. You can try going to a colder set of plugs...this often helps, by not letting the motor get as hot in the first place.


I will be tring two things next season:

Replace the starter bushings
Replace the bushing springs

I basically have just learned to live with it............GS quirk.......maybe!

The Good Doctor

[KEITH KRAUSE]

Kieth What Don is saying is the R/R will "see" a completely dead battery and try to charge it.In other words the voltage output allowed by the R/R will be about 16-17 volts and max amps which WILL let the smoke out of the electrics.

Thanks for educating me. I came up with the idea from way back in the '70s. Several of us had 'enduro' type bikes and we removed the batteries and lights,etc, and changed them to 'mx' bikes. Nobody ever had an electrical problem from doing this. But if you say the GS would have problems,then I won't dissagree.

[Anonymous]

Now my 1100 is doing this, I've had my starter apart a few months ago and everything was within spec. Could the heat itself make the starter work poorly? After going for a rip I have to wait half an hour for it to start properly, if I try right away the bike won't turn over at all. After riding for a few blocks the bike won't start either so it happens quickly. If I'm at home working on the bike I can start it over and over again with no trouble.

Any ideas?

Thanks in advance, Steve

[Anonymous]

I would not recommend doing it at all, ever. I was hoping some of the electrical technicals would jump in and fill in details.

The battery in a GS electrical system does act as a "filter" for the power supply (R/R) although, it should not hurt anything by removing the battery from a running bike. I still wouldn't do it cause I don't know how the regulator is put together, not having a schematic of it.

[Anonymous]

Now my 1100 is doing this, I've had my starter apart a few months ago and everything was within spec. Could the heat itself make the starter work poorly? After going for a rip I have to wait half an hour for it to start properly, if I try right away the bike won't turn over at all. After riding for a few blocks the bike won't start either so it happens quickly. If I'm at home working on the bike I can start it over and over again with no trouble.

Any ideas?

Thanks in advance, Steve

Steve,

I have seen dozens of hot starting problems caused by heat. 99% of the time, a new starter (rewound, not just rebuilt) will solve the problem.

Batteries do not generally fail in high temp. It's the cold that lowers output, not heat.

[Hoomgar]

Now my 1100 is doing this, I've had my starter apart a few months ago and everything was within spec. Could the heat itself make the starter work poorly? After going for a rip I have to wait half an hour for it to start properly, if I try right away the bike won't turn over at all. After riding for a few blocks the bike won't start either so it happens quickly. If I'm at home working on the bike I can start it over and over again with no trouble.

Any ideas?

Thanks in advance, Steve

Steve,

I have seen dozens of hot starting problems caused by heat. 99% of the time, a new starter (rewound, not just rebuilt) will solve the problem.

Batteries do not generally fail in high temp. It's the cold that lowers output, not heat.

Just to reinforce that look at my last post in this thread. The starter just needed a good cleaning in this case but would not work at all anymore until I did. Now it works like a new one. See the final post.
See it here --> http://www.thegsresources.com/_forum...20750&start=30