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Author Topic: GS 1100 swing arm  (Read 7198 times)

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timber

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GS 1100 swing arm
« on: May 05, 2006, 10:59:11 PM »

i got a gs1100 swing arm for some harley parts that i had. it needs the bearings and all, but it came with the axle and all the spacers. bike bandit has all the bushings and bearings, it will set me back almost $80.

so to my question, i have seen using a gs1100 swing arm on a kz650 not a big deal, but everyone uses the gs shocks or somthng similar. cant you use the stock kz ones? i know it is set up for a clevis lower mount, but looking at the kz swing arm i see a little tab that the bolt goes through? so my question is why cant i do something like that? or just run a grade 8 bolt with a lock nut? sounds like it could work?

please give me your input, or tell me i'm nuts and dont do it.
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weyauwega, wisconsin

79 Z650BC (daily commuter)
79 BMW R65 (salvage project)

tazzmann

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Re: GS 1100 swing arm
« Reply #1 on: May 07, 2006, 05:59:21 PM »

Don't know if I could give a good answer on this one as I don't know much about the GS. Maybe Rob or one of the other guys can answer this better for you. Sounds interesting though. What benefit does the GS swingarm give that the stock doesn't?

rstnick

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Re: GS 1100 swing arm
« Reply #2 on: May 07, 2006, 07:11:15 PM »

If you look at the pic below, you can see this GS shock's lower mount is the oposite of the KZ's. Where as it has two flanges that wrap around the swingarm. The KZ's shock lower mount is set between to flanges.

The problem with just using a bolt through the mount to mount the KZ shock, is that it's not suported well on one side and may bend the bolt. It could possably work. Let us know if you try, as I'm keeping my eye on the GS in this pic for future use.

The advantage on the GS swinarm is that it is more rigid, lighter and longer. But the shock mount is different. :(

You may want the rear brake set up as well, as I believe the axles are different diameters.

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Rob

KZ650.info home page with tech tips, manual downloads, how tos, etc: http://kz650.info/

'77 C1 project - newest
'78 C2 Candy Apple Blue, 107 000 kms, 18" wheels front & back, Rickman fairing, Koni shocks, Progressive springs, braced stock swingarm, GSXR600 rear sets, ATK fork brace, SS brake lines, Kerker exhaust, K&N filter in air box, ported, 1st over bore, Kawi electronic ignition, bought in '84.
'78 C2 project 6 #s off other C2
'79 C3 frame with title & bits, was my brother's.

timber

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Re: GS 1100 swing arm
« Reply #3 on: May 10, 2006, 10:47:05 PM »

ya the axle is a 20mm and not a 17mm. i have a complete axle with spacers and brake mount. the gs1100 swing arm is a box alum. type. it is also 2 or three inches longer than stock.

i have some shocks on the way from a member who had a extra set.

hey rstnick, are you waiting till the rest of that gs rusts away from that swing arm?? :D

when i get everything i will take alot of pixs and post them here for everyone.
« Last Edit: June 06, 2006, 06:39:11 PM by timber »
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weyauwega, wisconsin

79 Z650BC (daily commuter)
79 BMW R65 (salvage project)

rstnick

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Re: GS 1100 swing arm
« Reply #4 on: May 11, 2006, 09:39:53 AM »

The guy wants to sell that GS for $500.  :iconcrazy: The engine is shot, no front end, not much really left of it.

I'll try some other time when I have some money.
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Rob

KZ650.info home page with tech tips, manual downloads, how tos, etc: http://kz650.info/

'77 C1 project - newest
'78 C2 Candy Apple Blue, 107 000 kms, 18" wheels front & back, Rickman fairing, Koni shocks, Progressive springs, braced stock swingarm, GSXR600 rear sets, ATK fork brace, SS brake lines, Kerker exhaust, K&N filter in air box, ported, 1st over bore, Kawi electronic ignition, bought in '84.
'78 C2 project 6 #s off other C2
'79 C3 frame with title & bits, was my brother's.

rstnick

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Re: GS 1100 swing arm
« Reply #5 on: May 11, 2006, 07:30:00 PM »

Here's a pic of the rest of the GS:

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Rob

KZ650.info home page with tech tips, manual downloads, how tos, etc: http://kz650.info/

'77 C1 project - newest
'78 C2 Candy Apple Blue, 107 000 kms, 18" wheels front & back, Rickman fairing, Koni shocks, Progressive springs, braced stock swingarm, GSXR600 rear sets, ATK fork brace, SS brake lines, Kerker exhaust, K&N filter in air box, ported, 1st over bore, Kawi electronic ignition, bought in '84.
'78 C2 project 6 #s off other C2
'79 C3 frame with title & bits, was my brother's.

timber

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Re: GS 1100 swing arm
« Reply #6 on: May 12, 2006, 09:41:57 PM »

$500 :iconcrazy: i knew a couple of guys like that. rub off some of the rust to show him there isnt gold under it. i have my new swing arm bushings & internal ordered. should get them next week.

i will use my kz650 rim so i have to get some different wheel bearings to allow for the 20mm axle.
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weyauwega, wisconsin

79 Z650BC (daily commuter)
79 BMW R65 (salvage project)

timber

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Re: GS 1100 swing arm
« Reply #7 on: May 18, 2006, 10:28:27 AM »

rstnick -  i read in the other thread you did this conversion already?

what name brand and size rear axle wheel bearings did you use?
how many links did the chain come out to?
and did you say you squeezed a 170mm tire back there on a 650 rim?
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weyauwega, wisconsin

79 Z650BC (daily commuter)
79 BMW R65 (salvage project)

rstnick

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Re: GS 1100 swing arm
« Reply #8 on: May 18, 2006, 11:16:41 AM »

No, I have'nt done the conversion. The other post was a listing others swaps.
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Rob

KZ650.info home page with tech tips, manual downloads, how tos, etc: http://kz650.info/

'77 C1 project - newest
'78 C2 Candy Apple Blue, 107 000 kms, 18" wheels front & back, Rickman fairing, Koni shocks, Progressive springs, braced stock swingarm, GSXR600 rear sets, ATK fork brace, SS brake lines, Kerker exhaust, K&N filter in air box, ported, 1st over bore, Kawi electronic ignition, bought in '84.
'78 C2 project 6 #s off other C2
'79 C3 frame with title & bits, was my brother's.

timber

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Re: GS 1100 swing arm
« Reply #9 on: June 06, 2006, 06:42:46 PM »

i got the bearings and all that i need for the swing arm today. i won a kz1000 ltd wheel on ebay today also. my brake rotor should work. i have new sprockets on the way. i need a new tire and longer chain and i should be able to start to switch everything. i'll take all kinds of pixs.

btw keep a watch on ebay if you want to do this. i have seen three of these swingarm up in the last week now.
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weyauwega, wisconsin

79 Z650BC (daily commuter)
79 BMW R65 (salvage project)

rstnick

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Re: GS 1100 swing arm
« Reply #10 on: June 07, 2006, 09:13:35 AM »

Can you list all the parts swapped/needed for the conversion please!

And yes, pix as well.  :)
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Rob

KZ650.info home page with tech tips, manual downloads, how tos, etc: http://kz650.info/

'77 C1 project - newest
'78 C2 Candy Apple Blue, 107 000 kms, 18" wheels front & back, Rickman fairing, Koni shocks, Progressive springs, braced stock swingarm, GSXR600 rear sets, ATK fork brace, SS brake lines, Kerker exhaust, K&N filter in air box, ported, 1st over bore, Kawi electronic ignition, bought in '84.
'78 C2 project 6 #s off other C2
'79 C3 frame with title & bits, was my brother's.

tazzmann

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Re: GS 1100 swing arm
« Reply #11 on: June 07, 2006, 09:28:13 AM »

 :ditto: Please!

timber

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Re: GS 1100 swing arm
« Reply #12 on: June 07, 2006, 10:51:00 AM »

i will try to make this as detailed as i can. i know i will get everything together that i think i will need and still be missing something. another couple of weeks waiting for parts to come, saving $$ for the last of the parts and i should be ready by the end of the month? maybe?
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weyauwega, wisconsin

79 Z650BC (daily commuter)
79 BMW R65 (salvage project)

tazzmann

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Re: GS 1100 swing arm
« Reply #13 on: June 07, 2006, 12:03:10 PM »

 :waiting:

timber

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Re: GS 1100 swing arm
« Reply #14 on: June 07, 2006, 01:13:21 PM »

ok ok. the list of materials

1. 83 susuki gs1100 ed swingarm (i know there are a couple more years they used it) ---traded for parts
2. 83 susuki gs1100 ed axle and all the wheel spacers and brake mount --- e-bay
3. kz1000 ltd rear wheel (need to use a gs or kz wheel because the axle size on our 650's are smaller) our 650's 17mm axle the kz900 & 1000 are 20mm same as the gs1100 ed and i was having a hard time find wheel bearings that would work like i needed to use the kz650 rear wheel.
4. couple of 5/8" washers (i got from work)
5. gs1100 ed shocks they are different and we can't use the stock one.
6. new sprockets and a 120 link chain -- most have use around a 110 link, so for a couple extra $$ i got a little longer chain just to have room to work, i will trim it down later)

if you are getting parts off of e-bay sometimes it helps to search for gs750 drag bike parts. i found a couple of swing arm under that also. most gs1100 swing arms on e-bay have gone around $100 or so. i just saw a 5 1/2" extended gs1100 drag swing arm go for over $200.

benefits? it is a little longer than stock. i will get a exact measement when tear it all down. it is lighter than our stock swingarms and it is stronger being that it is a box type over a tube type. i am doing it so when i am doing hard load turns the rear end wont twist.

i want to make a nice write up on this. i'll start it here and then get it all polished up for a article later (is that ok tazz?)
« Last Edit: June 07, 2006, 01:16:16 PM by timber »
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weyauwega, wisconsin

79 Z650BC (daily commuter)
79 BMW R65 (salvage project)
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