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Anybody ever replace the winding in a generator rotor?
I have a 1980 CB750C with an open-circuit in the generator rotor.
Before I go plunk down $160 for a rebuilt one, I was wondering if it's at
all feasable to rebuild one myself.
(I've got two, so even if I tear one up, I still have one for the
core-charge if I buy one.)
It looks like the hardest part would be getting it apart. I found the 4
screws under the front surface, but I guess there's more holding it together
than that.
I hear it's supposed to end up around 4 Ohms. If it's 18ga. wire, that'd be
about 700ft, which I'm guessing would be about 1000 turns, which could be
sealed with epoxy.
Thoughts anybody (yeah, I'm a cheapskate).
Before I go plunk down $160 for a rebuilt one, I was wondering if it's at
all feasable to rebuild one myself.
(I've got two, so even if I tear one up, I still have one for the
core-charge if I buy one.)
It looks like the hardest part would be getting it apart. I found the 4
screws under the front surface, but I guess there's more holding it together
than that.
I hear it's supposed to end up around 4 Ohms. If it's 18ga. wire, that'd be
about 700ft, which I'm guessing would be about 1000 turns, which could be
sealed with epoxy.
Thoughts anybody (yeah, I'm a cheapskate).
On Apr 25, 12:18 pm, "Paul Barrett" <s...@barrettmanor.com> wrote:
> I have a 1980 CB750C with an open-circuit in the generator rotor.
> Before I go plunk down $160 for a rebuilt one, I was wondering if it's at
> all feasable to rebuild one myself.
An eternally-broke acquaintance tried rewinding his Suzuki stator with
transformer wire he bought from Radio Shack.
Transformer wire is insulated with a reddish brown enamel that will
not survive immersion in hot engine oil.
Suzuki's supplier (Denso? Nippon Kogyo?) used some kind of wire that
was insulated with a green plastic when winding
their OEM stators...
> I have a 1980 CB750C with an open-circuit in the generator rotor.
> Before I go plunk down $160 for a rebuilt one, I was wondering if it's at
> all feasable to rebuild one myself.
An eternally-broke acquaintance tried rewinding his Suzuki stator with
transformer wire he bought from Radio Shack.
Transformer wire is insulated with a reddish brown enamel that will
not survive immersion in hot engine oil.
Suzuki's supplier (Denso? Nippon Kogyo?) used some kind of wire that
was insulated with a green plastic when winding
their OEM stators...
Would a stator typically be immersed in hot engine oil? This one's outside
the seals & is dry.
"." <Morrgaine@gmail.com> wrote in message
news:ff846c66-5776-4de0-81bc-3e8a23cc98c2@t12g2000prg.googlegroups.com...
On Apr 25, 12:18 pm, "Paul Barrett" <s...@barrettmanor.com> wrote:
> I have a 1980 CB750C with an open-circuit in the generator rotor.
> Before I go plunk down $160 for a rebuilt one, I was wondering if it's at
> all feasable to rebuild one myself.
An eternally-broke acquaintance tried rewinding his Suzuki stator with
transformer wire he bought from Radio Shack.
Transformer wire is insulated with a reddish brown enamel that will
not survive immersion in hot engine oil.
Suzuki's supplier (Denso? Nippon Kogyo?) used some kind of wire that
was insulated with a green plastic when winding
their OEM stators...
the seals & is dry.
"." <Morrgaine@gmail.com> wrote in message
news:ff846c66-5776-4de0-81bc-3e8a23cc98c2@t12g2000prg.googlegroups.com...
On Apr 25, 12:18 pm, "Paul Barrett" <s...@barrettmanor.com> wrote:
> I have a 1980 CB750C with an open-circuit in the generator rotor.
> Before I go plunk down $160 for a rebuilt one, I was wondering if it's at
> all feasable to rebuild one myself.
An eternally-broke acquaintance tried rewinding his Suzuki stator with
transformer wire he bought from Radio Shack.
Transformer wire is insulated with a reddish brown enamel that will
not survive immersion in hot engine oil.
Suzuki's supplier (Denso? Nippon Kogyo?) used some kind of wire that
was insulated with a green plastic when winding
their OEM stators...
Paul Barrett wrote:
> Would a stator typically be immersed in hot engine oil? This one's outside
> the seals & is dry.
Honda's did it that way on a *ton* of their bikes. The XR/XL from 75cc
up to 350cc for sure. I haven't looked at the later models but they are
probably the same. Lots of early ones too like the Trail 90, Monkey
bike, et cetera.
<snip>
> An eternally-broke acquaintance tried rewinding his Suzuki stator with
> transformer wire he bought from Radio Shack.
Probably already guessed this is why he remains eternally broke. Radio
Shack transformer wire is incredibly expensive and you can only get
maybe 30' per roll. I have some here but I don't feel like looking for
it to make sure of price and length.
It really isn't feasible to use Radio Shack transformer wire for
rewinding anything. While that is what it is labeled, I think it more
for winding RF chokes or low value inductors. i.e. 10" of wire wrapped
around a pencil kind of stuff. Really, give the guy a break and tell him
not to buy it for stators.
Rick
> Would a stator typically be immersed in hot engine oil? This one's outside
> the seals & is dry.
Honda's did it that way on a *ton* of their bikes. The XR/XL from 75cc
up to 350cc for sure. I haven't looked at the later models but they are
probably the same. Lots of early ones too like the Trail 90, Monkey
bike, et cetera.
<snip>
> An eternally-broke acquaintance tried rewinding his Suzuki stator with
> transformer wire he bought from Radio Shack.
Probably already guessed this is why he remains eternally broke. Radio
Shack transformer wire is incredibly expensive and you can only get
maybe 30' per roll. I have some here but I don't feel like looking for
it to make sure of price and length.
It really isn't feasible to use Radio Shack transformer wire for
rewinding anything. While that is what it is labeled, I think it more
for winding RF chokes or low value inductors. i.e. 10" of wire wrapped
around a pencil kind of stuff. Really, give the guy a break and tell him
not to buy it for stators.
Rick
I've known people who wound their own coils for building electric guitars,
so anything's possible...
"Paul Barrett" <spam@barrettmanor.com> wrote in message
news:a8qQj.41$Rk6.2@trnddc07...
>I have a 1980 CB750C with an open-circuit in the generator rotor.
> Before I go plunk down $160 for a rebuilt one, I was wondering if it's at
> all feasable to rebuild one myself.
> (I've got two, so even if I tear one up, I still have one for the
> core-charge if I buy one.)
> It looks like the hardest part would be getting it apart. I found the 4
> screws under the front surface, but I guess there's more holding it
> together than that.
> I hear it's supposed to end up around 4 Ohms. If it's 18ga. wire, that'd
> be about 700ft, which I'm guessing would be about 1000 turns, which could
> be sealed with epoxy.
> Thoughts anybody (yeah, I'm a cheapskate).
>
>
so anything's possible...
"Paul Barrett" <spam@barrettmanor.com> wrote in message
news:a8qQj.41$Rk6.2@trnddc07...
>I have a 1980 CB750C with an open-circuit in the generator rotor.
> Before I go plunk down $160 for a rebuilt one, I was wondering if it's at
> all feasable to rebuild one myself.
> (I've got two, so even if I tear one up, I still have one for the
> core-charge if I buy one.)
> It looks like the hardest part would be getting it apart. I found the 4
> screws under the front surface, but I guess there's more holding it
> together than that.
> I hear it's supposed to end up around 4 Ohms. If it's 18ga. wire, that'd
> be about 700ft, which I'm guessing would be about 1000 turns, which could
> be sealed with epoxy.
> Thoughts anybody (yeah, I'm a cheapskate).
>
>
Oh well - I found a place that rebuilds them (if you send them a core first)
for $79.
Never did get the darned thing apart. I don't know if it requires a solvent
or special puller or both.
But for that price to get one rebuilt, it no longer seems worth trying it
myself.
"Ron Seiden" <subronseiden@verizon.net> wrote in message
news:yRQQj.4335$E77.2427@trnddc05...
> I've known people who wound their own coils for building electric guitars,
> so anything's possible...
>
> "Paul Barrett" <spam@barrettmanor.com> wrote in message
> news:a8qQj.41$Rk6.2@trnddc07...
>>I have a 1980 CB750C with an open-circuit in the generator rotor.
>> Before I go plunk down $160 for a rebuilt one, I was wondering if it's at
>> all feasable to rebuild one myself.
>> (I've got two, so even if I tear one up, I still have one for the
>> core-charge if I buy one.)
>> It looks like the hardest part would be getting it apart. I found the 4
>> screws under the front surface, but I guess there's more holding it
>> together than that.
>> I hear it's supposed to end up around 4 Ohms. If it's 18ga. wire, that'd
>> be about 700ft, which I'm guessing would be about 1000 turns, which could
>> be sealed with epoxy.
>> Thoughts anybody (yeah, I'm a cheapskate).
>>
>>
>
>
for $79.
Never did get the darned thing apart. I don't know if it requires a solvent
or special puller or both.
But for that price to get one rebuilt, it no longer seems worth trying it
myself.
"Ron Seiden" <subronseiden@verizon.net> wrote in message
news:yRQQj.4335$E77.2427@trnddc05...
> I've known people who wound their own coils for building electric guitars,
> so anything's possible...
>
> "Paul Barrett" <spam@barrettmanor.com> wrote in message
> news:a8qQj.41$Rk6.2@trnddc07...
>>I have a 1980 CB750C with an open-circuit in the generator rotor.
>> Before I go plunk down $160 for a rebuilt one, I was wondering if it's at
>> all feasable to rebuild one myself.
>> (I've got two, so even if I tear one up, I still have one for the
>> core-charge if I buy one.)
>> It looks like the hardest part would be getting it apart. I found the 4
>> screws under the front surface, but I guess there's more holding it
>> together than that.
>> I hear it's supposed to end up around 4 Ohms. If it's 18ga. wire, that'd
>> be about 700ft, which I'm guessing would be about 1000 turns, which could
>> be sealed with epoxy.
>> Thoughts anybody (yeah, I'm a cheapskate).
>>
>>
>
>
"Ron Seiden" <subronseiden@verizon.net> wrote in message
news:yRQQj.4335$E77.2427@trnddc05...
> I've known people who wound their own coils for building electric guitars,
> so anything's possible...
>
> "Paul Barrett" <spam@barrettmanor.com> wrote in message
> news:a8qQj.41$Rk6.2@trnddc07...
>>I have a 1980 CB750C with an open-circuit in the generator rotor.
>> Before I go plunk down $160 for a rebuilt one, I was wondering if it's at
>> all feasable to rebuild one myself.
>> (I've got two, so even if I tear one up, I still have one for the
>> core-charge if I buy one.)
>> It looks like the hardest part would be getting it apart. I found the 4
>> screws under the front surface, but I guess there's more holding it
>> together than that.
>> I hear it's supposed to end up around 4 Ohms. If it's 18ga. wire, that'd
>> be about 700ft, which I'm guessing would be about 1000 turns, which could
>> be sealed with epoxy.
>> Thoughts anybody (yeah, I'm a cheapskate).
>>
I rewound the alternator on a mid-60's AMC when I was a youth. Even then,
it was kind of hard to find reasonably priced replacement parts for these
dogs as they didn;t sell too many new so winding the old one was the only
option. I must admit, I didn;t approach it with a lot of forethought. I
used wire that had been sitting around the shop and was available and I
wound it until it looked about right. The thing worked and put out the
right voltage. I don;t know how long it lasted, but after we sold the car
and never heard from the new owner.
