02 1200 bandit alternator

[Rochy111]

Hi

would like to pick your wonderful big brains if I could about my brothers 1200 bandit, he bought the bike as a fixer upper and  I've got the job of the fixing haha, it's got a cracked alternator drive, got a new one ordered but while I was tinkering I thought I'd just offer the old one up to the alt and oil pump just to try and get a feel for it meshing for when I fit the new one. Something isn't quite right with it, to me the alternator gear on the alt seems too big. My question is are there different size alternator gears?,could this be the wrong alternator fitted and that's what's knackered the drive on the back of the clutch basket, when the gears are meshed the main shaft is miles out of centre. Just to note the sprocket is off the basket. Any help and info would be hugely appreciated 

cheers

Edited February 26, 2018 by Rochy111

[wraith]

Hi and welcome to OSS,

Yes there are different sizes of sprockets (gears as you say) and if you force the wrong size in you can bust the gear on the back of the clutch basket (not cheep) 

[Rochy111]

Thanks for the reply, I can't understand how it's been running when my brother bought it without making a rotten sound, it was cheap tho, the sprockets must have just been jammed together. Thanks again ,gonna get searching for the correct alternator .

[wraith]

If it's the wrong one and its been running I'd have a much closer look, the gear at the back of the clutch that the alternator goes onto also runs the oil pump. 

If you think its the wrong alt, I'd remove the clutch and have a good look/check that all is OK before you go looking for a new alt. 

[Rochy111]

Cheers, the clutch and basket and sprockets are all off on the bench, it's when I offered the old sprockets up without the basket is when I found the main shaft is miles out of centre, I wonder if the previous owner has replaced the alternator with the wrong one and forced it in causing the alternator sprocket to well sheer basically, there are 2 weird sperious bolts holding the alternator on, they look like coach bolts with the head chopped off and a washer brayed on hahaha, thanks again for your help, i think I've got my work cut out for me with this one hahahaha 

cheers

Edited February 26, 2018 by Rochy111

[CockneyRick]

Count the teeth on the Alt gear & the basket gear, then post that up & someone will be along to give you advice as to what's right/wrong.

I can't help numbers wise, as i don't do Blandits  

[Rochy111]

Will do mate cheers

[wraith]

From what I can see on your pics all looks OK.

Their are usual 3 (12mm think maybe 10mm ) that hold the alt in place (heads of bolts on the lh side of motor)

As @CockneyRicksays count the teeth on the sprockets and someone who know bandits more can tell you what's what 

The alt can be a real pain to get in place and mess the teeth, unless you're very lucky it the teeth where wrong and the bike has run I would of expected to see damage.

[fatblokeonbandit]

There are 3 sizes of alternator gear 26,28 and 30teeth.. the bandit 1200 uses the 26 tooth one, like the 2 alternators in the picture from my 2 engine in bits at the moment

 

[fatblokeonbandit]

the one in the picture trough the case looks like a 30 tooth one!!! 

 

count the teeth

[jameskat]

The spring damper plate on that clutch is seriously broken.

[fatblokeonbandit]

35 minutes ago, jameskat said:

The spring damper plate on that clutch is seriously broken.

Flippi, ,eck well spotted that man

[Rochy111]

Yeh there is huge bits missing off the spring damper, can't find them anywhere in the engine lol which makes me think someone has been at this motor disastrously before lol but the alternator gear in my pic definitely looks like the 28  or 30 tooth in fastblokes pic gonna retire to the workshop now and count them ( the mother in law is here aswell so time for a cool sharp harp hahaha)cheers everyone I'll keep you posted

cheers

[fatblokeonbandit]

you dont need a new alternator just teh gear they are all interchangable

[Swirl]

7 minutes ago, fatblokeonbandit said:

Flippi, ,eck well spotted that man

What Fbob don't know about blandits ain't worth knowing 

[Rochy111]

Yeh just as I thought and as you said fastbloke it's a 30 toother, thanks for all your help lads

[colinworth79]

26 teeth bandit 1200

28 teeth gsxr 1127

30 teeth gsxr 750

 

[Rochy111]

Cheers colinworth, I think the previous spanner monkey let loose on this particular machine is a special kind of stupid or genius I'm not sure lolol chopped the head off of 2 coach bolts to secure the alternator

[Rochy111]

And below is the result of said genius hahaha

[Rochy111]

30 tooth sum bitch lol

cheers again lads for all your help, I little knowledge goes a long long way

[Gixer1460]

Those short ones look suspiciously like self drilling and tapping Roofing TEK screws - loving the file work on the coach bolts though! 

[Rochy111]

Yup that's exactly what's they are, they are everywhere on it hahaha like I said " special" lol gonna cost a fortune just to replace where all the tek screws are on it hahaha

[wraith]

4 hours ago, jameskat said:

The spring damper plate on that clutch is seriously broken.

+1

[CockneyRick]

Nah, bit of PVA glue on it & it'll be fine  

[fatblokeonbandit]

WTF were the tech screws holding on???? most of the threads will be shot then?????