stator overheating

[florence]

I have seen modifications where 15A fuses are put inline with the three stator wires as a prevention.  Might help diagnose without burning out another alternator stator.

[Bryanj]

15amp way too big per phase, total output of all three not that

[Brian Cairns]

I'm wondering if the heat is actually caused by friction. Few reports lately where the rotor casing wasn't fitted with the 2 dowels that locate it properly, this caused the casing to sit a little skew and that caused the rotor itself to start to catch on the stator and the field coils. Any sign of rubbing on those? Also make sure the dowels are in place. If they are missing when you look, unless you know they are meant to be there you'd not know they were missing.

This is exactly what happened to mine, you MUST have both dowels fitted.

Hi , please excuse my ignorance, do i have to pull the rotor to check if dowels are in place, where are they located?


Thanks
Brian

[Johnny4428]

Just the cover Brian!

[Brian Cairns]

Brilliant, thank you.

Cheers

Brian

[Nurse Julie]

If you do find the dowels are missing Brian, I have some here. They are No.11 on the fiché

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[Brian Cairns]

If you do find the dowels are missing Brian, I have some here. They are No.11 on the fiché

(Attachment Link)

Thanks, will do.

Cheers

Brian

[Brian Cairns]

UPDATE:
I now have bike sorted.
My mechanic ( now ex-mechanic) installed the new regulator/rectifier incorrectly, in fact  he did not install the one I gave him at all, he used a rectifier he had in stock but still managed to wire it up incorrectly.
I got an auto spark who sorted it.

I took bike for a 25 mile run and then using an IF temperature gun, I measured the following temps.:
Fins ; 120 oc
Stator/Rotor side casing 72 oc
electronic ignition side casing 68 oc.
This all seems normal.
Bike is running really well, I have to install the spring on the choke rod for the carb yet.
I can get bike easily up to 80 mph but not much there after.
Idle sitting at 1200 rpm.
Thanks for all your help

Brian

[Oddjob]

What spring on choke rod?

Should get beyond 80mph quite easily, should really only start to struggle after 100mph.

[Trigger]

UPDATE:
I now have bike sorted.
My mechanic ( now ex-mechanic) installed the new regulator/rectifier incorrectly, in fact  he did not install the one I gave him at all, he used a rectifier he had in stock but still managed to wire it up incorrectly.
I got an auto spark who sorted it.

I took bike for a 25 mile run and then using an IF temperature gun, I measured the following temps.:
Fins ; 120 oc
Stator/Rotor side casing 72 oc
electronic ignition side casing 68 oc.
This all seems normal.
Bike is running really well, I have to install the spring on the choke rod for the carb yet.
I can get bike easily up to 80 mph but not much there after.
Idle sitting at 1200 rpm.
Thanks for all your help

Brian

Many cowboys about that think they know what they are doing is correct 
Next time you take the bike out rev to 7000 rpm and change gear at those revs and see if it is still sluggish. If you are still struggling to get it past 80 mph, have a look at your float height's to check that you are getting enough fuel. 

[Brian Cairns]

Ok Thanks.
There are 2 springs which are on the choke rod linkage in the carb unit. The larger spring opens up 2 carbs and the smaller spring ( which essentially joins the rods) opens up the other 2. The smaller spring was missing. Half choke opens up the 1st 2 carbs the smaller spring ( which essentially joins rods together) open ups the other 2 carbs when on full choke. Previous owner tried to use copper wire as a replacement for the smaller spring, apparently this is a common ‘hack’. Mind you my ex-mechanic might have lost the spring. I persuaded my original and trusted mechanic who i have been using for years to come out of retirement to sort my bike, he told re-done the carbs and synced them , he told be about the missing spring. I was lucky to get one of a motorcycle breaker on ebay. You could never buy the spring separately from Honda and they don’t make the whole linkage at all now.