82 GS450E Scrambler from Aus - Done!

YogiBear

New Member
I added one of those to my bike a while ago for my gps. looks good, Pete. Really clean install as always
 

peteGS

Zuk's Rock!
YogiBear said:
I added one of those to my bike a while ago for my gps. looks good, Pete. Really clean install as always
Thanks mate! And yes, they come in very handy! I've thought about one for ages and the location was the issue. Have to see how it holds up when I get something to use with it...
 

peteGS

Zuk's Rock!
jfman said:
Good way to salvage the rear tail section on this build!

Thanks mate! Yeah I'm pretty happy with how that tail piece turned out... first time fibreglassing like this so very happy with the result!
 

Maritime

Well-Known Member
Really nice work Pete, best part is you ride it! I wish I could keep my GL clean like that, I still have a layer of crap from my 4200 Km trip to the M-O GTG and back and it is baked on good. O well, I have a garage now and winter to make her pretty again.

Cheers

Maritime
 

peteGS

Zuk's Rock!
Maritime said:
Really nice work Pete, best part is you ride it! I wish I could keep my GL clean like that, I still have a layer of crap from my 4200 Km trip to the M-O GTG and back and it is baked on good. O well, I have a garage now and winter to make her pretty again.

Cheers

Maritime
Cheers mate! Yep, she gets ridden every working day and on the weekends when I can and in fact I just wish I had more time to ride... ::) Actually she's almost at the 6000km mark since the rebuild... just waiting on bits to arrive from the US and the second service will be done ;)

She spends half her time being filthy lately as we keep having spurts of showers and rain just as I'm leaving work, but this time she was still almost clean from the last bath :)

A garage definitely helps too, mine sits outside at work after we got kicked out of the building basement, so she quickly develops a fine layer of filth that I never used to get... but cleaning and polishing is all part of the fun right? :D

Hoosier Daddy said:
Thanks HD! Very happy with her :D
 

jfman

Member
Your build makes me think that with some rear frame mod, one could build a dual sport or a supermotard from a little GS. Lots of unique things on this one.
 

peteGS

Zuk's Rock!
jfman said:
Your build makes me think that with some rear frame mod, one could build a dual sport or a supermotard from a little GS. Lots of unique things on this one.
Thanks mate, and yep you sure could!

The only issue is getting more shock travel without having the chain rub against the frame at the swingarm mount... probably an inch more travel would be it without some more work I would think...
 

GS750cafe

New Member
Hey Pete-

You might remember I am building a '77 gs 750 cafe. I too am using the original seat pan on mine. Is your seat cover attached to the pan via the metal tabs on the bottom of the seat pan or some other method?

Cheers
 

peteGS

Zuk's Rock!
GS750cafe said:
Hey Pete-

You might remember I am building a '77 gs 750 cafe. I too am using the original seat pan on mine. Is your seat cover attached to the pan via the metal tabs on the bottom of the seat pan or some other method?

Cheers
Hey mate, the stock spikes had mostly rusted away and broke off when removing the old cover, so the upholsterer just used contact adhesive and glued it in place. It's holding up real well but I think they have better glue than I do...
 

GS750cafe

New Member
Thanks for that, Pete. I've ordered some foam and vinyl and will give it a shot... can't be any harder than chopping and welding the sub-frame, welding rearset tabs or rebuilding forks, right?
 

peteGS

Zuk's Rock!
GS750cafe said:
Thanks for that, Pete. I've ordered some foam and vinyl and will give it a shot... can't be any harder than chopping and welding the sub-frame, welding rearset tabs or rebuilding forks, right?
Good stuff, I reckon you should be right ;)

Just don't forget to leave a bit extra on the foam to allow for tightening the cover down properly.
 

peteGS

Zuk's Rock!
Well I know this thread has been "complete" for quite some time, but just a final update on tuning...


I finally got around to getting her running better this week and man I really should've done that like a year ago... the difference is amazing!


Turns out I wasn't rich at all. What I thought was bogging off idle was hesitating. What I thought was surging at low throttle openings was a flat spot and stumbling. The pops on decel weren't excess fuel igniting.


I learnt all this by getting some needle shims off eBay and initially taking the needle back to stock and shimming it up half a notch (I had it one notch up after the rebuild). The bike was almost unrideable at low throttle openings. Hesitation off idle, stumbling until about half throttle... horrid! Went up to three quarters of a notch, better but essentially still the same.


At that point I figured I was waaaaaaaaaaaaay too lean so I took it to one notch up with the E clip and shimmed it another half notch. That was more like it! Still a little hesitant, almost a stumble but not quite, and much reduced pops on decel.


Final needle setting is maximum richness of two notches richer than stock and it's now completely transformed. No hesitation, no stumbling, and I didn't notice any pops on decel after she was warmed up. I'm stoked!


Here's the test ride video from today:


http://youtu.be/z0kZX5McUzM
 

peteGS

Zuk's Rock!
And one final carb adjustment for the moment:











Just under 20mm's off the slide springs.


Test ride on the commute today and I reckon it'll be either really good or really crap...


I'm also contemplating the 6 size up mains again tonight. Now the needles are at their richest I'm wondering if 4 sizes is enough...
 

Big R

Heaven is so far away.
Pete, what's the idea of shortening the springs? I've heard of it being done on other bikes, but have never tried it personally. If it turns out to be "crap", I have some stock springs you can have for the cost of shipping.

As far as the mains go: with needle at its richest, the mains will provide more gas at WOT anyway (because the needle is further out of the way). So you might be ok with 4 sizes up.

Good luck buddy!
 

peteGS

Zuk's Rock!
Rich, the idea is to improve throttle response. Less spring means less resistance when the slides rise.


And it works :D


I had an awesome ride to work and back today, definitely more responsive on the throttle. It's not ground breaking or anything, but you can really notice the difference.


The other thing to do is to drill the vacuum transfer hole in the bottom of the slide. I'm not game to do that one at the moment but it's still in the back of my mind.


The downside today is I'd gone too far on the mixture screws, so I richened them up 3/4 of a turn again and WOT didn't feel like it pulled as strong as the rest of the throttle range, so tonight I put the 6 size up mains in too.


See how it goes tomorrow...
 

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