Geoff the giant small bike

[bogan]

[unstuck]

That's bloody tasty, I wish I had half the skill needed to slap one of them together.

Right, I'm too lazy to assemble my ZXR400H2 forks, so I stole the H1 units off the Kawasilly.


There isn't a massive amount of clearance to be running the 160 rear on the stock swinger, so I'll probably try find a nice 150 rear, orrrrr get a real swing arm I hadn't noticed how much I'd abused the tyres while they were on the Kawasaki though, some wanker must have stolen it and actually leaned it over?

Thoughts on the whole OTT USD and fat rims idea?

Does my bum look big in this.

[T.W.R]

You need to throw a old school DR400/SP370 donk in it

Get another GN swingarm and cut it and make an underslung brace and a 150 would make it drop into corners more quickly

[ducatilover]

You need to throw a old school DR400/SP370 donk in it

I think the DR600 that's in it will suit my needs

Get another GN swingarm and cut it and make an underslung brace and a 150 would make it drop into corners more quickly

Bloody good idea thanks, was just thinking of making a full custom jobbie, because I don't think I can get Pilot Powers in a 150? And they're my favourite tyre out of all the stuff I've had.
I'll have an ask around for another swinger though, underbraced is the way it will be done, regardless (it's just too cool)

Does my bum look big in this.

Never dear southern man

[T.W.R]

I think the DR600 that's in it will suit my needs

Bloody good idea thanks, was just thinking of making a full custom jobbie, because I don't think I can get Pilot Powers in a 150? And they're my favourite tyre out of all the stuff I've had.
I'll have an ask around for another swinger though, underbraced is the way it will be done, regardless (it's just too cool)

lol you need to read an article I've got called Mountain Thumper

150/55 Dragon Corsa stick like shit to a blanket

there'll be shitloads of GN bits around, even a GZ marauder swinger... they're just a GN with a broken back

[ducatilover]

lol you need to read an article I've got called Mountain Thumper

150/55 Dragon Corsa stick like shit to a blanket

there'll be shitloads of GN bits around, even a GZ marauder swinger... they're just a GN with a broken back

Them old 400/370 lumps rather good are they? This 589 owes me
$20 for the motor, which had fresh bearings (best buy, ever) with all electrics, new rings, 2 clutches and a bunch of goodies incl. a TM38
$10 for a kick start spring
$20 for a brand new cam (from the same guy the motor was from) which may or may not get ground
$26 NOS piston out of Japland.
By my shit math, that's $76 fairly cheap for a very, very lazy 44hp (according to the manual I have...I doubt it's that much)

Might build a swinger, just because I can/want to/waste time and money etc.
If I had access to a lathe I could turn up a new cross tube so I can run sealed bearings instead of the needle rollers it has.
It'll be easier to brace it by bending some tuve anyway, as it's essentially two bits of round, with a slab up front to pretend it won't flex

Oooh, I'll have a perv at the Dragon Corsa
A mate of mine said he will do me a good deal on the Maxxis M6209 (I think?)

[T.W.R]

Them old 400/370 lumps rather good are they? This 589 owes me
$20 for the motor, which had fresh bearings (best buy, ever) with all electrics, new rings, 2 clutches and a bunch of goodies incl. a TM38
$10 for a kick start spring
$20 for a brand new cam (from the same guy the motor was from) which may or may not get ground
$26 NOS piston out of Japland.
By my shit math, that's $76 fairly cheap for a very, very lazy 44hp (according to the manual I have...I doubt it's that much)

Might build a swinger, just because I can/want to/waste time and money etc.
If I had access to a lathe I could turn up a new cross tube so I can run sealed bearings instead of the needle rollers it has.
It'll be easier to brace it by bending some tuve anyway, as it's essentially two bits of round, with a slab up front to pretend it won't flex

Oooh, I'll have a perv at the Dragon Corsa
A mate of mine said he will do me a good deal on the Maxxis M6209 (I think?)

Fark cheap enough you wouldn't do better than that If you find one the old 370/400 was pretty indestructible & a good SP370 would cruise all day at 70mph without breaking a sweat.

ha 44hp is enough for a single, better to be able to use all of it most of the time rather than a bit of it once n awhile

Splicing up two swingarms to complete a braced unit would simple as piss to do. All the hard stuff is done....no worrying about exact bends, just getting cut angles right & appropriate bridging plates.
Id sell you my lathe for the right coin but it'd make things an expensive exercise then.

lol maxxis are better off left to tend their trade with off road tyres & mountain bike tyres

[ducatilover]

Fark cheap enough you wouldn't do better than that If you find one the old 370/400 was pretty indestructible & a good SP370 would cruise all day at 70mph without breaking a sweat.

ha 44hp is enough for a single, better to be able to use all of it most of the time rather than a bit of it once n awhile

Agreed. I reckon the 589 will tootle along very nicely. And finally I'll have some brakes and rubber

Splicing up two swingarms to complete a braced unit would simple as piss to do. All the hard stuff is done....no worrying about exact bends, just getting cut angles right & appropriate bridging plates.
Id sell you my lathe for the right coin but it'd make things an expensive exercise then.

I'll have a proper looky in to doing a braced arm with the original then But I'd like to make new rear plates where the axle goes and raise the shock mounts to raise the bum of the bike, and will need mounts for a rear caliper.
I can't afford any toys at the mo, blardy student loan is getting smaller by the week though.

Just had a thought, I might make some rear sets for it too, much like how the fact. rear pegs are mounted (not so far back though). Be easy as to do.

lol maxxis are better off left to tend their trade with off road tyres & mountain bike tyres

They made some damn good BMX and mountain bike tyres

[T.W.R]

I'll have a proper looky in to doing a braced arm with the original then But I'd like to make new rear plates where the axle goes and raise the shock mounts to raise the bum of the bike, and will need mounts for a rear caliper.
I can't afford any toys at the mo, blardy student loan is getting smaller by the week though.

Just had a thought, I might make some rear sets for it too, much like how the fact. rear pegs are mounted (not so far back though). Be easy as to do.

lol you need a plasma cutter

They made some damn good BMX and mountain bike tyres

I know I've the damn things on my Specialized BigHit III D/H toy

[ducatilover]

lol you need a plasma cutter

I cut through most things with my sharp wit.

I know I've the damn things on my Specialized BigHit III D/H toy

I had them on my yellow BMX I paid $10 for

Must decide on full custom swinger, or just mod the original. I love first world issues!

[Drew]

Putting parts on a GN is never seriously considering performance though is it?
Axle is further back than the standard one by an inch, and the front is lower than standard

So you have one inch more trail then. How much lower is the headstock than standard? Need to be a lot to compensate for 25mm of trail.

Loving the swingarm idea. If you make one from scratch with sealed bearings, you will need to know someone with a bake oven. Can't remember what the process is called, but after you weld to the mounting tube it will need to be cooked good and proper with plugs in the bearing home so that it maintains it's shape. It's why we haven't built a new swingarm for our sidecar yet.

[ducatilover]

So you have one inch more trail then. How much lower is the headstock than standard? Need to be a lot to compensate for 25mm of trail.

I'll work it out, but there are very few fucks I can be giving about how a GN handles
The ZXR clamp offset is further forward than the GN one.
Front end is a lot lower, but will measure that.
Will be interesting to see how on the piss it is, I'm not fussed though it's a GN, not a sports bike and it has a Doug riding it.

Loving the swingarm idea. If you make one from scratch with sealed bearings, you will need to know someone with a bake oven. Can't remember what the process is called, but after you weld to the mounting tube it will need to be cooked good and proper with plugs in the bearing home so that it maintains it's shape. It's why we haven't built a new swingarm for our sidecar yet.

Well, that does sound impractical I don't know anyone with an oven capable of that. Would the same need to be done with the needle rollers? Could always go hori and turn up some bushings and pump the cunt full of grease

I took all the measurements for the swing arm this morning, too bloody crook to continue fluffing around in the garage though, but I should be able to design it now and a jig will be easy enough if I measure everything around 45 times
Once I grow some more scrotal fortitude I shall go back out and measure the steering geometry

Looking at where the swing arm will go etc, there will only need to be one bend on each of the rails, effectively the same as factory, but further forward to accommodate the tyre

[Drew]

If you turn a precise piece of tube, then weld to it, it won't be round anymore. Even if you are gonna bake it, you will need solid plugs to fit in the bearing home.

If you can get away with not welding to the pivot tube, do so or it Will eat bearings.

[bogan]

Or weld it and then machine the bearing surface...

To do a good job on the swingarm I reckon you'd need a decent sized mill to clock up the jig right anyway; plus machining afterwards means any other parts that distorted slightly during welding won't affect the final position.

[ducatilover]

Standard GN is 105mm trail.
Currently have 110mm
And I'm raising the rear to make it prettier, so it'll end up similar.

Still not worried about how it'll handle, it just has to look good and IMO with another 40 odd mm height in the arse, it'll look choice.


And it's not like GN geometry was good in the first place unstable shitters.