GS 1000 engine in GSXR 1100 first gen frame?

[John Kat]

Small disappointment today as the bike didn't want to start?
The fuel gets to the carbs and the spark plugs do fire?
Could it come from the wiring of the coils?
Midway through the project I had to swop the primary wiring of the coils in effect the coil that fires 1&4 now fires 2&3.
If the CDI has a wasted spark shouldn't it work in any case?
Correction: No it won't because the coils have to fire at 180° of each other.

To compound the bad day, I had ventured to fix the quad of one of my friends ( a Yamaha Bear Tracker from 2004).
I had diagnosed a leaking intake tract and while I got a new one for 2 and 1/2 times the price one would have paid in the US, the O-ring that should go with it is unavailable ...
Yamaha Europe spares is now closed until the 15th of January!

[John Kat]

Good news, the engine started easily once I switched the coils between cylinders 1&4 to 2&3.
I discovered I was suffering from the R&D engineer syndrome: "We can't release the product yet as I still want to improve this or that"
A few years earlier, I would have taken the bike for a ride but today I want to make sure everything is nice and tight.
Not so long ago I lost the rear brake stay arm on one of my bikes and on another I lost the gear shift lever...
In any case it's a nice Christmas present!

[steve murdoch]

Congrats on the getting the engine fired and i admire your restraint in not taking it for a short test ride.

[posplayr]

Good news, the engine started easily once I switched the coils between cylinders 1&4 to 2&3.
I discovered I was suffering from the R&D engineer syndrome: "We can't release the product yet as I still want to improve this or that"
A few years earlier, I would have taken the bike for a ride but today I want to make sure everything is nice and tight.
Not so long ago I lost the rear brake stay arm on one of my bikes and on another I lost the gear shift lever...
In any case it's a nice Christmas present!

I feel like you are calling me out by name

[RedLiner1100]

It sure is coming along nicely!

[Chuck78]

John, keep in mind that the triple clamp offset is extremely critical in achieving a proper and excellent handling bike. It is not something you can just mix and match! I don't believe the gsxr1100k triples have enough offset to achieve what you are going for in a vintage race bike. 95-96mm trail is a good quick turning spec with a good deal of stability still, and using 18" wheels, you will need more offset in your triples most certainly to get this kind of precise and quick handling. 17" wheels and the gsxr1100k triples would give this, but 18's generate much more trail. Before any final triple selection, measure the fully loaded bike's actual head tube rake and front tire diameter, & do some calculations. There are several places that make custom billet triples, as this is almost always the easiest way out to get very precise handling without weeks of researching triple clamp specifications.

The only way I'd think you will get really good quick steering with the 18" and 1100k triples would be if you had increased the caster to around 24 degrees rake, thus reducing trail substantially.

[John Kat]

John, keep in mind that the triple clamp offset is extremely critical in achieving a proper and excellent handling bike. It is not something you can just mix and match! I don't believe the gsxr1100k triples have enough offset to achieve what you are going for in a vintage race bike. 95-96mm trail is a good quick turning spec with a good deal of stability still, and using 18" wheels, you will need more offset in your triples most certainly to get this kind of precise and quick handling. 17" wheels and the gsxr1100k triples would give this, but 18's generate much more trail. Before any final triple selection, measure the fully loaded bike's actual head tube rake and front tire diameter, & do some calculations. There are several places that make custom billet triples, as this is almost always the easiest way out to get very precise handling without weeks of researching triple clamp specifications.

The only way I'd think you will get really good quick steering with the 18" and 1100k triples would be if you had increased the caster to around 24 degrees rake, thus reducing trail substantially.

Chuck, I'm well aware of these facts that were highlighted here: http://www.thegsresources.com/_forum...ons&highlight=
I just bought a complete RSU R6 front fork and it looks very promising.
First the spacing between the stanchions at 205 mm is identical to the GSXR 2nd gen fork I currently have.
Second the fork length at 755 mm is 15 mm longer than the GSXR counterpart.
This not important for this project but will be a godsend for a GS 1000 frame.
Third the triple's offset at roughly 40 mm is 5 mm longer than the GSXR's.
Worst case, I could use the R6 triples in my project to quicken the steering further.
The unknown so far is will a GSXR wheel fit the R6 fork?
The spindle diameter appears to be 22 mm!

[John Kat]

The purists are going to yell but I have decided to equip the bike with a pair of lenticular lenses.
The main reason beeing that it should not distract too much from the racing look of the fairing as the lens itself is only 50 mm in diameter.
Here's what they look like:

[Buffalo Bill]

Those must look weird on any bike.
Me thinks they might work with the frog face Katana fairing.

[limeex2]

Its your build, therefore proper. What the purists think is yet another opinion...

[John Kat]

The lenticular lenses are now in place.
The subframe supporting the lenses is rubber mounted to reduce the vibrations in the headlights.
On the pictures the second lens is missing as the vendor had shipped two high beams...
The holes in the fairing will come later when I'm absolutely sure everything lines up correctly.
Currently the fairing is held below the lenses up front, to the frame in front of the cylinder head and behind the cylinder head.
The most difficult remains to be done: getting a support on both sides of the windscreen.
Normally this support should also carry the rear view mirrors...

[GSYOSHI]

"I just bought a complete RSU R6 front fork and it looks very promising."

Kinda twiddling my thumbs waiting to see how this turns out. No pressure.

[John Kat]

"I just bought a complete RSU R6 front fork and it looks very promising."

Kinda twiddling my thumbs waiting to see how this turns out. No pressure.

How strange, I just bought one myself
It will most probably be for version 2.0.
The only issue is that it will be difficult to fit GSXR 18" wheels ...
The good news is that the stanchions will slide right into the GSXR 1100 K triples!

[coombehouse]

I like the lights. Nice to see something a bit different

[John Kat]

At long last, I got to work on the bike this week.
The upper fairing stay and the rear view mirror support is now in place.
Next will be fitting the front lights and drilling the holes in the fairing...