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1978 GS550 project

  • Thread starter Thread starter Nightcrawler
  • Start date Start date
Are those shocks e-bay specials? I love the look, how do they handle??

Yes RFY Chinese shocks off of ebay, they seem a bit stiff. I may take some nitrogen out of them but for 120 bucks or so well worth it from what I have read and ridden so far.
 
GS550 shift points

GS550 shift points

I have a shift-point chart from the 9/77 Cycle Magazine GS550 test:

1st - 38.3 mph
2nd - 57.5
3rd - 74.1
4th - 87.2
5th - 97.9
6th - good luck! (theoretically 112 mph)

They found max HP at 9000 rpm and max torque at 8000. They ran a 13.78 quarter at 94 .73 mph
 
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Shop up North

Shop up North

Sorry I haven't gotten back with you sooner.My shop is just east of downtown Libertyville,I live in Lake Zurich.Maybe I can stop over this coming weekend to check out what you would need done.email me at landspeedrich@hotmail.com to get my numbers.:o
 
Shifting

Shifting

I guess you shift when you need to.You'll just get the feel when you need to grab another gear.With my GS 1100,the torque lets me run up to 65 or so,or as low as 15 in second gear.No need to lug it excessively,just keep the motor in its sweet spot.;)
 
I have a shift-point chart from the 9/77 Cycle Magazine GS550 test:

1st - 38.3 mph
2nd - 57.5
3rd - 74.1
4th - 87.2
5th - 97.9
6th - good luck! (theoretically 112 mph)

They found max HP at 9000 rpm and max torque at 8000. They ran a 13.78 quarter at 94 .73 mph



Holy ****... I am in 3rd gear by 40 mph... I guess I need to shift more towards 5k rpm. Instead of 3.8k I did hit 105 yesterday on a friends private road.
 
105 was the reported top speed for the 550 when it was new, so I guess you know your engine is running right!
 
What did you make the external filter elbows out of?
Did I miss that part?

Eric
 
What did you make the external filter elbows out of?
Did I miss that part?

Eric


I made them out of some rubber 45degree plumbing elbows cut in half. It is almost a perfect fit, they sit behind the back of my knees and solved the issue I had with clearance between the filter and frame. Also I like how they look.

This past weekend I upped my main jets to 110's hoping to remove some flat spots I have above 5500rpm.

I also replaced the stator with a brand new one, recommended to me by BassCliff. (thanks amigo!) This was pretty easy, the biggest pain was putting the bike on its side (Tree jack to a engine mount bolt) by myself, without damaging anything. Took around 20 minutes to swap out the stator and sure enough getting a 13.15 reading back to battery at idle. (Was 11.58)

I now have almost 100 miles on her, and everyone I mean everyone stops me to ask about her. I even get people thinking its an old Triumph or Ducati. Really fun to ride so far, I will keep everyone updated I still have some changes in mind but really wanted to get the bike ready to ride for this summer.

Pictures.
Bike on her side before stator change. Note the oil stain is not from her, I had just changed the lawnmowers and missed the pan a bit.
yjfc6.jpg


t0mek4.jpg


20rprn9.jpg



A bath after a night of muddy rain.
20u1sae.jpg
 
Great looking bike.

I've found myself in possession of a 1977 GS550 just last week. Your project is an inspiration, I've wanted to do something similar.

Mine needs a hell of a lot more work! http://i.imgur.com/ZREf8.jpg

Anything you can recommend you had wish you knew coming out of the gate with the project?
 
I have a 77 GS550, work in progress:
westeagle1.jpg


Where did you get your Tarozzi rearsets?
 
Absolutely LOVE the bike and the thread!!! I want to do something very similar to my gs1000 (78) very soon. Not to steal your idea but I love the gages. Can I ask what kind they are? Thats the style I want on mine. And again awesome bike!
 
Glad to see others like the bike. I get stopped almost everywhere I go asking about it and it is by far the most fun thing to ride I have ever had. Even more fun then my buell.

I will do my best to answer your guys questions.

-Gauges are from Dime City Cycles you can also get on flebay, just make sure you get the correct ratio. I think they ran me 120-130ish but I sold the stock ones for around 100 so $20-30 is not bad and I love the clean small look they give to the bike.

-I got the rear sets from a fellow GSer near me who is switching his back to a stock feel. They run about 340-360 brand new, you can find them online.

Now for the big one

1- If I had to start over I would of measured everything before ordering several times over, really think about sizes. I ordered a few things that said they would fit gs550 but did not fit mine. A new rear sprocket, air filters a few bolts etc. Save yourself the headache and measure everything out.

2- Take pictures of everything before you take it apart and during then put all pieces into market ziploc bags or some other sorting system. If you get messed up on reassembly just pull up the pictures.

3- Make your bike safe and ready to ride as soon as possible, this not only lets you enjoy your bike but helps a lot with tweaking and such that you can't just do while its on the stand.

4- Save your old parts, you never know. Don't get rid of anything until you know for sure you no longer need it. Then try and recoup some build costs if you can.

5- Attack the bike in stages and order parts in those stages. Don't get **** for your battery delete if you haven't even got the bike running or the carbs tuned.

6- Do your research and find the best solution to your problem. These forums are most likely your best place to start.

7- Learn something. Every time I worked on a new section or part of the bike I learned more about it. No matter how much time or money you spend on your project it is worth it because you will be learning something that you can apply to something else.


I am going to continue to modify and adjust things to my liking but this 550 will be my main ride this season. It is awesome to hear some others have been inspired by this build just as I was by other builds. I would like to share a few pictures of the bike that inspired me to do this.

iojfw9.jpg


246l848.jpg
 
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Absolutely LOVE the bike and the thread!!! I want to do something very similar to my gs1000 (78) very soon. Not to steal your idea but I love the gages. Can I ask what kind they are? Thats the style I want on mine. And again awesome bike!

You can get them from Dime City Cycles, they're about $45 a piece IIRC.

Where did you get that seat btw ClineDesign??
 
You can get them from Dime City Cycles, they're about $45 a piece IIRC.

Where did you get that seat btw ClineDesign??

I made the seat, and the cowl I made out of fiberglass.

Edit: NVM I am an idiot....
 
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