'78 GS1000 specs

[Guest]

I've started the maintenance of my recently purchased Skunk to get it ready for the road and had a few questions.
First, I couldn't find the sprocket tooth count in the manual. I presently counted 15 (front) and 42 (rear) on the bike. Is that stock?
Second, the bike has a 17" rear tire and rim but the manual states an 18" rear tire?
thanks

ps...here's a pic for your pleasure....it was on clearance at the local WalMart.......and, yes, those bars will be the first thing to go when I finish with the mechanics.

[gshub]

stock gearing

over here in England it is geared 15/42 and I think only the Gs1000s had a18ins back
wheel ,but i have fitted a 17ins Gs1000e wheel to my Gs1000s as its a bit wider.

[Nessism]

The sprocket teeth number is in the factory service manual, in the specifications section near the front - 15/42. If you switch to a 530 chain the teeth number changes.

[chef1366]

Those are 80-82 rims. I do believe the 78s had spoke rims.

[Nessism]

'78 1000E model has a 17" in the rear. The 1000S and spoke wheel bikes had an 18 in back.

[lurch12_2000]

I looked through the service manual from Basscliff's site again and found the '78 1000E model did have the 17" rear and the 5 star rims, not spoke wheels, but still can't find sprocket teeth count anywhere. So based on responses, assume this bike has stock front and rear 15/42 sprockets.

[Nessism]

I looked through the service manual from Basscliff's site again and found the '78 1000E model did have the 17" rear and the 5 star rims, not spoke wheels, but still can't find sprocket teeth count anywhere. So based on responses, assume this bike has stock front and rear 15/42 sprockets.

[Spyderman]

Those are 80-82 rims. I do believe the 78s had spoke rims.

in 78 they indeed did have those rims but they only came on the EC model that had cast wheels and dual disk up front
standard E had the mags with single disk
the C had spokes and a single disk

and the only 18" wheel was the spoked one for the rear
stock sprockets are 15 front 42 rear with a stock 630 chain at 96 pins in length

[Nessism]

in 78 they indeed did have those rims but they only came on the EC model that had cast wheels and dual disk up front
standard E had the mags with single disk
the C had spokes and a single disk

and the only 18" wheel was the spoked one for the rear
stock sprockets are 15 front 42 rear with a stock 630 chain at 96 pins in length

This may have been true in Canada, but I don't think so in the US.

For 1978:

GS1000C - standard model with spoke 18" rear and 2 disc

GS1000EC - E model had cast 17" rear and 3 disc's

Some dealers installed cast wheels on the 1000C, so they would have 2 disc's, but Suzuki never offered the model officially.

[will61310]

It will take more than rims to convert the front to dual disc. On my 78 C model, only 1 fork tube is set up for a caliper - the other tube is smooth. Now i have to look at my rear spoke rim again, i thought it was 17 inches

[TheCafeKid]

It will take more than rims to convert the front to dual disc. On my 78 C model, only 1 fork tube is set up for a caliper - the other tube is smooth. Now i have to look at my rear spoke rim again, i thought it was 17 inches

There were no 17" spoke wheels. However I have heard tell that some of the spokes had a 2.5 " rear rim. They are also aluminum instead of chromed steel like the spoked 750 rims.

[lurch12_2000]

OK, Nessism, thanks for pointing that out. I was looking at that page but guess it wasn't registering.

[Spyderman]

This may have been true in Canada, but I don't think so in the US.

For 1978:

GS1000C - standard model with spoke 18" rear and 2 disc

GS1000EC - E model had cast 17" rear and 3 disc's

Some dealers installed cast wheels on the 1000C, so they would have 2 disc's, but Suzuki never offered the model officially.

you may be correct about that i often forget that you get different models that we do up here and for that matter your models are different to pretty much the rest of the worlds

[atb1998]

My 78 c model has 18" spoke wheels with single disc front and rear, aluminum rims. it is a us spec model.

[Octain]

My 78 has 17 and 19 aluminum with twin brakes.
15 tooth front and 42 tooth in the rear. Assuming the sprockets have been changed in the past due to markings on the bolts.