82 KZ750 LTD Brat Style Build **UPDATED**

[doc_rot]

Re: 82 KZ750 LTD Brat Style Build - First Timer

nice project I have a 1980 kz750 E1 i am planning on doing something similar with down the road. If i could make one suggestion, since you bought some decent shocks you clearly give a shit how this thing might handle. Without the front fender the fork lowers will move out of sync with each other particularly during hard braking. it makes the bike a bit wobbly, not a reassuring feeling. if you want the "no fender look" chop the fender down to just the brace part, it will blow your mind what a difference this makes in handling. keep up the work, bike is looking great!

 

[Jrbrownie00]

Re: 82 KZ750 LTD Brat Style Build - First Timer

Making progress.

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[Jrbrownie00]

82 KZ750 LTD Brat Style Build - First Timer

Almost all of the electronics hiding and wire tucking/extending is done. Just need the power wire extended. Heres the only picture I remembered to take.

List of whats left:
Extend power wire
Bleed brakes
Install rear SS line (in the mail)
Replace bent DynoJet needle (in the mail)
Rivet master link for new chain
Final bolt tightening throughout the bike.

Hope to be riding next weekend but we all know how that goes.



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[M.B Co]

Re: 82 KZ750 LTD Brat Style Build - First Timer

Did you go with an upgraded regulator/rectifier?

 

[Jrbrownie00]

Re: 82 KZ750 LTD Brat Style Build - First Timer

Nah, I didnt do much research on them and didnt feel like spending the money. My understanding is the combined unit just saves space but im probably wrong.


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[firebane]

Re: 82 KZ750 LTD Brat Style Build - First Timer

Nah, I didnt do much research on them and didnt feel like spending the money. My understanding is the combined unit just saves space but im probably wrong.


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Completely wrong. Without a upgrade rectifier/regulator you stand a very good chance at overcharging that new battery and making it a doorstop.

 

[Jrbrownie00]

Re: 82 KZ750 LTD Brat Style Build - First Timer

Completely wrong. Without a upgrade rectifier/regulator you stand a very good chance at overcharging that new battery and making it a doorstop.

Any suggestions that aren't crazy expensive?


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[firebane]

Re: 82 KZ750 LTD Brat Style Build - First Timer

Any suggestions that aren't crazy expensive?


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Look at the Ricks Motorsport versions. I bought one for my KZ400 for just over $120 including shipping and taxes but I also live in Canada.

 

[Jrbrownie00]

Re: 82 KZ750 LTD Brat Style Build - First Timer

Look at the Ricks Motorsport versions. I bought one for my KZ400 for just over $120 including shipping and taxes but I also live in Canada.

That's expensive lol Let's see if anyone else chimes in with a cheaper alternative.

 

[firebane]

Re: 82 KZ750 LTD Brat Style Build - First Timer

That's expensive lol Let's see if anyone else chimes in with a cheaper alternative.

There are alternative methods like buying a 3 phase rectifier and using a regulator out of a ford truck. But they take up a lot of space and cause a lot of other wiring.

You spent a lot on that battery and consider $120 expensive? I would be doing whatever I could to ensure that the battery doesn't go poof.

 

[Jrbrownie00]

Re: 82 KZ750 LTD Brat Style Build - First Timer

There are alternative methods like buying a 3 phase rectifier and using a regulator out of a ford truck. But they take up a lot of space and cause a lot of other wiring.

You spent a lot on that battery and consider $120 expensive? I would be doing whatever I could to ensure that the battery doesn't go poof.

It's one of those purchases none wants to spend money on.

 

[Jrbrownie00]

Re: 82 KZ750 LTD Brat Style Build - First Timer

Did you go with an upgraded regulator/rectifier?

Did you?


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[doc_rot]

Re: 82 KZ750 LTD Brat Style Build - First Timer

there has been some discussion on the type of regulator required to run on of those lithium ion batteries over on KZRider http://kzrider.com/forum/4-electrical/592547-lithium-ion-batteries#620183

Quote from the thread >>>"At Nat Semi, we designed some of the original charge control IC's for Sony's Li-Ion batteries. They demanded +/-0.5% accuracy on the charge voltage. The accuracy of the MC system voltage is more like 3%. Sony showed us data indicating that a variance of 0.5% on charge final voltage corresponded to a 30% change in battery charge (HUGE) hence their demand for accuracy" Since you spent so much on your battery i would suggest spending the extra for a good mosfet regulator like the ones found here. Mosfet regs are considered ideal for these batteries. > http://www.roadstercycle.com/

 

[Jrbrownie00]

Re: 82 KZ750 LTD Brat Style Build - First Timer

there has been some discussion on the type of regulator required to run on of those lithium ion batteries over on KZRider http://kzrider.com/forum/4-electrical/592547-lithium-ion-batteries#620183

Quote from the thread >>>"At Nat Semi, we designed some of the original charge control IC's for Sony's Li-Ion batteries. They demanded +/-0.5% accuracy on the charge voltage. The accuracy of the MC system voltage is more like 3%. Sony showed us data indicating that a variance of 0.5% on charge final voltage corresponded to a 30% change in battery charge (HUGE) hence their demand for accuracy" Since you spent so much on your battery i would suggest spending the extra for a good mosfet regulator like the ones found here. Mosfet regs are considered ideal for these batteries. > http://www.roadstercycle.com/

So you'd suggest going above and beyond even the ricks unit?

 

[M.B Co]

Re: 82 KZ750 LTD Brat Style Build - First Timer

Did you?


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I did. Running a Oregon motorcycle parts unit. Worth the money IMO. I started with upgrading my electrical system first then if I ever wanted to upgrade from the bikemaster agm battery currently in my system to a litho ion it will be ready.

To keep that battery in good running condition I would upgrade.

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[Jrbrownie00]

Re: 82 KZ750 LTD Brat Style Build - First Timer

I did. Running a Oregon motorcycle parts unit. Worth the money IMO. I started with upgrading my electrical system first then if I ever wanted to upgrade from the bikemaster agm battery currently in my system to a litho ion it will be ready.

To keep that battery in good running condition I would upgrade.

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Interesting, I've been researching tonight and on Oregons website they don't suggest there RR for use with Lithium or AGM. I think I might go with a Ricks because they can be had for $90.

 

[M.B Co]

Re: 82 KZ750 LTD Brat Style Build - First Timer

Interesting, I've been researching tonight and on Oregons website they don't suggest there RR for use with Lithium or AGM. I think I might go with a Ricks because they can be had for $90.

Odd. I didn't read anything about that. Some of their units are set at 14.5 max charging which is right at the limit of some agm and litho ion batteries.

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[doc_rot]

Re: 82 KZ750 LTD Brat Style Build - First Timer

So you'd suggest going above and beyond even the ricks unit?

Your old r/r is has most definitely degraded over the years from heat making it very inaccurate. the least you should do is upgrade to a modern r/r like one from Ricks. Those are still rather inaccurate at regulating voltage compared to a mosfet r/r because they are using thyristors to regulate voltage. A thyristor is basically a diode with a separate leg, acting as a switch, they rely on current constantly flowing through them to regulate voltage, (bad for LI) they also have a delay, so as current surges it rushes through THEN is switched off. this makes them vary widely in relative voltage. Mosfet R/R are a switch and act as one. open for current closed for none, much more efficient which translates to much more accurate voltage regulation.

That being said, some people don't do either and run them for a year or two before they die, others have them fail within a week. It really depends on how long you think you can make it before your battery fails, because it will.

another benefit of a Mosfet r/r is if you upgrade your lights to LED, HID or any other lower wattage, or remove indicators and such, you are creating more amps for the regulator to get rid of, which mosfets are very good at.

In the end its like most preformance upgrades, you rarely get away with one simple change. its several changes that lead to an overall performance boost. just my .02

 

[doc_rot]

Re: 82 KZ750 LTD Brat Style Build - First Timer

if you dont want to spend the coin on a new one some newer bikes use mosfet r/r i found this cheat sheet:

Kawasaki
ZX-6R 2007-> Cut-n-splice... Either solder, or get both connectors from eastern beaver...
ZX-10 2004->
ZX14 2006->
Concours 2008-> Both MOSFET and non-MOSFET available, beware! (And the tyristor based one seems to need a larger load than the VTR to work)

"Yamaha
FZ1 2007->
YZF-R1 2007->
YZF-R1 2004-2006 - Works, but has large fins, making it hard to fit...
FJ1300 2007->
Wildstar 1300 2007->

Honda
CBR 1000RR 2004-2007 - Both MOSFET and non-MOSFET available, BEWARE! Cut-n-splice
CBR 1000RR 2008-> Odd connectors, no plugs available, use spade connectors...
CBR 600RR 2003-2006 - Both MOSFET and non-MOSFET available, BEWARE! Cut-n-splice
CBR 600RR 2007-> Cut-n-splice

Almost all R/R's for motorcycles are made by Shindengen, and they supply all the manufacturers... Honda, Kawasaki, Yamaha and Suzuki and others...

A MOSFET R/R has a marking with FH-*** on it... The numbers tell the specific output and such... and an older thyristor based R/R is marked SH-*** same here, numbers tell the output... SH stands for shunt, and FH for "FET based shunt"... Ie MOSFET..."

 

[doc_rot]

Re: 82 KZ750 LTD Brat Style Build - First Timer

BOOOOOOM $50 is hard to beat! 8) you can see it says FH008 = mosfet

http://www.ebay.com/itm/2007-2010-CBR-600RR-CBR600RR-VOLTAGE-REGULATOR-RECTIFIER-07-08-09-10-/251409858290?pt=Motorcycles_Parts_Accessories&hash=item3a8931fef2&vxp=mtr