You told me so...1150 SC

[Carter Turk]

50 laps into a 2 day track session, pulled into hot pit hearing noises, first session of second day, starter clutch grenaded again is my thought, my day is over, heard engine digest parts into sump, or so I thought. Went for one more lap to see if awful sound continued, it did not. Rode the rest of the day.

My Idle Gear (IG) is 17/70 tooth if I counted correctly, can I run a 1100 big taper rotor/SC/IG with 1150 starter motor? Thanks if anyone knows.

The helicoil on the rotor was the only thing that didn't appear oval. 2800 miles to this. I guess now I can show someone what the starter clutch is made of and have it welded like RRay has been saying all along.

[chef1366]

Ouch
The big end 1100 and 1150 starter clutches are the same except for the dowel.
It is the idler gear and starter that differs so use the 1150 starter with the 1150 idler gear.

[Carter Turk]

Not sure what the count is on a 1100- it's not 17/70 like the 1150.

Seems like the manufacturing tolerances of this starter clutch gear (496-1) weren't up to the original that came with the bike.

I'm riding to Sea Ranch in N. Cal in less than a month, so I might just bump start there, and park on hills, to avoid another failure until I can figure out what

to do,or steal the SC from my other 1150, but might end up with more allen bolts floating around in the engine.

Ouch
The big end 1100 and 1150 starter clutches are the same except for the dowel.
It is the idler gear and starter that differs so use the 1150 starter with the 1150 idler gear.

[quexpress]

Not sure what the count is on a 1100- it's not 17/70 like the 1150.

The count on the 1100 is 18/55.

[Carter Turk]

The count on the 1100 is 18/55.

Thanks for that. Wonder why Suzuki decided to change it. So the starter motor has a differnt tooth count then too?

I count 10 teeth on the 1150 starter motor.

[trippivot]

DSC01061_zpskmiutw3n.jpg,
even if it is welded -- cracks appear between the holes on the large gear -I have had this happen more than once - it is not always loose bolts


because I value the ease of self starting I inspect mine more often now. couple times a summer instead of every couple years

[trippivot]

DSC01058_zpsuuidztaf.jpg you are not alone with this exact problem

[quexpress]

Thanks for that. Wonder why Suzuki decided to change it.

GS1100: 55/18 = 3.05
GS1150 =70/17 = 4.1
Different ratios. The second one is easier to turn I guess.

So the starter motor has a different tooth count then too?

Yes the spline count is different for each starter (1100 or 1150).

[Carter Turk]

[ATTACH=CONFIG]41487[/ATTACH],
even if it is welded -- cracks appear between the holes on the large gear -I have had this happen more than once - it is not always loose bolts


because I value the ease of self starting I inspect mine more often now. couple times a summer instead of every couple years

What caused yours to grenade like that?

I was in there with a new SC and left end in February, checked again in June., because it was snatching, found loose bolt, put in heli-coil, all is well and quiet, for several hundred miles, then the low rpm noise occured again.