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New member/New project underway

  • Thread starter Thread starter NorCalSuperF
  • Start date Start date
N

NorCalSuperF

Guest
Greetings everyone!

My first post here at The GSResources, joined just last week, I was steered to this site by good words from some of my fellow membership over at cb1100f.net.

Just a quick couple of pics of where I'm headed and where I've been.

The new project, a 1980 GS1000.
P1000713.jpg


My last project, an 80'-83' SuperF
SuperF001.jpg

SuperF018.jpg


Another past favorite build, a 1984 VF750F.
VF750F1.jpg


More pics to follow as the Suzuki build continues.
NorCalSuperF
 
Nope, she was a lowly stocker.

Here's the donor, a 1997 CSXR750 SRAD.
P1000690.jpg
 
Baad A$$

Baad A$$

Nice look. Welcome aboard; checkout 80GS1000 he also has a mono shocked 1000. He did a trick with 4:2:1 2nd Gen GSXR 1100 exhaust to improve ground clearance.

Got close ups of the monoshock supports and any other bracing?

Pos (me)
 
wow

wow

First off welcome to our obssession! Very nice start on your build, that Honda is absolutely killer! Looking forward to your GS progress. Keep the picks coming!
:clap:
 
Dang your Honda came out sweet, I am looking forward to what the GS will be.
Very nice work.

Got close ups of the monoshock supports and any other bracing?
Click to expand...

It does not look like he has that part done yet due to the block of wood in there.
 
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damn, you're making me have second thoughts about leaving my 1100 stock.
 
Looks like you do nice work! :clap: Welcome to the GSR. What part of NorCal do you rip up with those beasts? Anywhere near San Jose?
 
Thanks for the positive comments guys!

80GS1000, I read your 70+ page thread last weekend and it took hours to get through that! Anyway, found exactly what I was looking for, Advanced Precision and ordered a 18T-520 .625" offset countershaft sprocket from Randy.

Rear wheel cush drive face machined down .300".
GS1000sparts009.jpg


SRAD steering stem upper machined down to 25mm and threaded 25x1 to use the stock GS1000 25x47 tapered roller bearing, bottom will be the GS1000 30x55 tapered.
GS1000sparts006.jpg


Number one thing for me when swapping suspension/wheels is true wheel and frame alignment first and foremost with lots of time spent measuring, stringing the wheels, long steel straightedges and then moving the chain/sprockets/brakes to their necessary locations.

The swing arm pivot is completed, I'll snap some pics and post a comment when I have the arm off again to make the shock mounts.
 
Nice to see you posting here NorCal, this site just got a very knowledgeable new member!
 
NorCalSuperF said:
Thanks for the positive comments guys!

80GS1000, I read your 70+ page thread last weekend and it took hours to get through that! Anyway, found exactly what I was looking for, Advanced Precision and ordered a 18T-520 .625" offset countershaft sprocket from Randy.
Click to expand...

Nice work! What's involved with getting that particular swingarm to fit in a GS1000 frame?
 
80GS1000 said:
What's involved with getting that particular swingarm to fit in a GS1000 frame?
Click to expand...

Same things as yours mate but the problems are clearance issues between the frame & swingarm brace if you set the swingarm at the stock 12 degrees from level & the fact that the shock wants to sit exactly where the battery should live, no major hassle tbh but something to be aware of :)

Its a good looking project NorCal but i'm not sure i'd be happy turning down a hollow steering stem by that much, i usually make a new stem to suit or occasionally use the gs stem bushed out to fit the new bottom yoke

cheers tone
 
Greetings tone,

No safety or structural issues with machining down this particular stem, I don't have a "before" pic to compare to so, I'll just try to explain what's going on here.

The stock GSXR SRAD stem dimensions are "roughly" as follows, the top is a 24mm dia. threaded area (approx. 15mm down) and from there is the "key" 25mm dia. straight section going down an additional 15mm or so to where a shoulder spreads the dia. out to the threaded 30mm jam-ring and upper bearing area.

The mods to my stem are as follows, the 25mm dia.x15mm straight area (that is already there) is machined downward an extra 35mm and 25x1mm threads are cut into the top 35mm of that area. The stem's wall thickness is a respectably stout 6mm all the way through the machined area.

I've seen sheared stems on race bikes that have slammed straight into the ground from 6ft. high cartwheels in the air and street bikes that have plowed into solid roadside objects at rediculous speeds, the shear happens right below the upper triple clamp and above the upper bearing and usually the upper or lower triple clamps are split in two (or more) and the fork legs are always completely destroyed. Any impact like this and the bike is generally considered done for good anyway.

80GS1000,

I'll show pics of what was needed to fit the swing arm when I finish the shock mounts. A complete Yoshimura RS-3 stainless 4-2-1 system came with the GXSR donor bike, I'm considering cutting that up to fit this project.
 
What type of racing do you do? I'm impressed with your building skills. How does that CB750 ride, looks fantastic! :cool:

That GSXR Yoshimura pipe won't fit at the GS head as the GS exhaust ports have a wider spacing at the head than on the watercooled GSXR. Been down that road with a GSXR 1000 Ti header myself. :lol:

If you want a 4-2-1 GSXR header on your GS, I'd suggest using an oil/aircooled GSXR header as the exhaust spacing will be correct.

This header on my bike is a hybrid of some GS1000 exhaust flanges cut off a V&H GS1000 4-1 pipe and then welded onto a Hindle 4-2-1 header for an '89 GSXR 1100. It gives about a 2-3" ground clearance gain and bolted right up at the head.
 
What was wrong with the donor bike?
Click to expand...

Nothing as far as I know, I found the bike for sale in a local craigslist.com. ad, the bike was complete except for the carbs and seat and not crashed. I called and asked the owner if he would be interested in parting it out since it had ran in several previous ads without selling. I told him what parts I was interested in and what I was building and made an offer for those pieces, he called the next day and offered the bike without the bodywork and gas tank for a few dollars more, I countered and we agreed on a price. I had already removed quite a few parts before I snapped the pic of the bike in this thread.

What type of racing do you do? I'm impressed with your building skills. How does that CB750 ride, looks fantastic! :cool:

That GSXR Yoshimura pipe won't fit at the GS head as the GS exhaust ports have a wider spacing at the head than on the watercooled GSXR. Been down that road with a GSXR 1000 Ti header myself. :lol:
Click to expand...

My racing days are long past, those were back in the mid-80's, still enjoy doing the occasional track day though. The Honda rides and runs great, it's an 80' CB750F frame with a 83' CB1100F engine the wheels, forks and brakes are from a 91' GSXR1100, swing arm/shock/linkage are from a CBR900RR, pipe is a combination of a Kerker header mated to a modded Bassani race end-can.

I'm aware of the exhaust port spacing differences between the GS and the GSXR heads and have already rough measured for what needs to be changed to get the RS-3 header tight under the GS. My plan is also to fit a Bassani style end-can to whatever header I mount to look similar to what I did to the Honda. That's still all just early ideas.

Trackday pic is me at the bottom of the "Corkscrew"@Laguna Seca.
r1atlagunasecasml-1.jpg
 
Hi NorCal
read & understood the post on the steering stem mate, the point i was making was my personal opinion only :D your stem is now down to what i consider the minimum thickness over more of its length than stock imo thats fine if you are happy with it but its not something i would do

cheers tone
 
just subscribing

just subscribing

I love that CBF-SS. My cousin had one when I was a kid and I've always wanted one (Maybe do one in the future). I'm going to pay close attention to how you engineer your linkage mounts. Please show us some pics, if you have any, of any frame bracing you've done.
 
That Honda is INSANE. I've always wanted a CB750/900/1100 in that body style.
 
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