1125R charging questions

Playground of the Techies. The place for resolution of more detailed questions and problems. Attempts to start The Tyre Thread or The Oil Thread in here may result in personal injury.
billbofagends
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Joined: Sat Sep 04, 2021 7:02 pm
Current ride: 1125R

Re: 1125R charging questions

Postby billbofagends » Thu Sep 09, 2021 2:39 pm

Jazzbutcher wrote:If you have the airbox bottom off check the engine breather, it just slots in about 2 inches from the rear & the little foam filter that's in the end can clog with oil & drip onto the engine. Just take the foam bit out & clean it. It's worth doing anyway even if it isn't that.
Hope you get it sorted.


Cheers for the tip. I'll take a look when I get a mo. Sidetracked looking after a mate who's ran out of road on his KTM at the moment. If anyone needs any blackberries I've got a fair few in amongst plastics and handlebars of a KTM lOl

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Nutah
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Current ride: X1 2001
Location: southampton

Re: 1125R charging questions

Postby Nutah » Thu Sep 09, 2021 3:00 pm

:rotfl: :rotfl:
Feros Ferio

billbofagends
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Joined: Sat Sep 04, 2021 7:02 pm
Current ride: 1125R

Re: 1125R charging questions

Postby billbofagends » Fri Sep 10, 2021 12:05 am

Stator slapped backed on the bike, only 1 or 2 AC volts showing across all of the phases. Multimeter tested against another running bike stator just to rule that out as an issue. Looks as if stator is toast. My guess is that it was down to just one phase when I bought it and that's why the clock backlights flickered and now the last phase has burnt out. I've not looked at the back of my stator as I didn't pry it off the sealant holding it in the engine case. Pic attached shows it installed in case and rotor, what you reckon? It's a bit crusty in one part for sure.

https://photos.app.goo.gl/NsyWae5HtyRbh3gi7
https://photos.app.goo.gl/4iuD5V67jX3Jjz5o8

My smoke issue seems to be the breather. I think that may have blown off the bottom of the air box. Certainly blows a bit.

[youtube]https://youtu.be/Ur3FvR4wtpE[/youtube]

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barney
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Re: 1125R charging questions

Postby barney » Fri Sep 10, 2021 6:04 am

" It's a bit crusty in one part for sure."
:yt:
Buell Ulysses XB12X 06/08

billbofagends
Posts: 14
Joined: Sat Sep 04, 2021 7:02 pm
Current ride: 1125R

Re: 1125R charging questions

Postby billbofagends » Fri Sep 10, 2021 1:59 pm

West country rewinds have quoted me £141 for a rewind and they sell the rmstat series r/r for £126. Sounds like the way to go. WCR were very helpful btw, certainly well versed on the 1125. Is it worth doing the hildstrom rotor mod?

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Nutah
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Re: 1125R charging questions

Postby Nutah » Fri Sep 10, 2021 5:15 pm

barney wrote:" It's a bit crusty in one part for sure."
:yt:


yes it needs rewinding
Feros Ferio

billbofagends
Posts: 14
Joined: Sat Sep 04, 2021 7:02 pm
Current ride: 1125R

Re: 1125R charging questions

Postby billbofagends » Tue Sep 14, 2021 11:05 pm

Is it worth doing the hildstrom mod or getting the updated oil spraying rotor while in there? Has anyone just run a new stator with series rectifier and had lasting success?

Anyone willing to rent out a locking tool or perhaps let me borrow one?

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Maz
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Re: 1125R charging questions

Postby Maz » Tue Sep 14, 2021 11:15 pm

You MUST have the oil jet drilled into the rotor or the stator will fail again.
Mithered ta death.
92 MB
96 S2T
98 S1W
00 M2
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03 P3
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billbofagends
Posts: 14
Joined: Sat Sep 04, 2021 7:02 pm
Current ride: 1125R

Re: 1125R charging questions

Postby billbofagends » Wed Sep 15, 2021 1:20 pm

What about the Hildstrom rotor mod? Any suggestions for places where either can be done in the UK? Twin motorcycles is an expensive option. £70 just to get the locking tool here let alone reworking my existing rotor.

billbofagends
Posts: 14
Joined: Sat Sep 04, 2021 7:02 pm
Current ride: 1125R

Re: 1125R charging questions

Postby billbofagends » Mon May 09, 2022 4:46 pm

Several months later...

The original rotor has been drilled as per hildstrom's method. Done on a CNC miller with indexed rotary table so done very accurately. Also, hole countersunk to create funnel effect to further increase air flow.

West country rewinds did the rewind on my stator. They also supplied a RMStator series rectifier (RMS022-106799). Everything fitted, initial testing went well. Idle charging voltage in the low 14s.

On a 15mi test run though, voltage as recorded on dash screen around 15, peaking at 15.3. Occasionally would drop to low 13s but majority of time at 15+.. The r/r became too hot to touch. Previous experience with FH Shindengen mosfet rectifiers I was expecting barely any heat, especially as this series r/r is supposed to run cooler than MOSFET shunt. At standstill, with multimeter I get 15 revving around 5k.

Any experience with this r/r on the 1125? It's going back to WCR for inspection. As a test, I put an FH012AA to check output voltage, max indicated by multimeter at 6k was 14.2v.

Cheers


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