Bucket Chassis

[Ivan]

Hey has anyone got any cheap RS125 Honda chassis or TZ125 chassis. 4 sale

[GSVR]

I suppose you already seen this one ? Too Dear?

http://www.trademe.co.nz/Trade-Me-Motors/Motorbikes/Motorbikes/Sports-tourer/auction-24101852.htm

What motor are you planning on fitting to it?

Regards

[F5 Dave]

Aww that’s a bit flash. Comes with a motor & fairings as well.

Besides, isn’t against the spirit of things to use an racing chassis?

[riffer]

Aww that’s a bit flash. Comes with a motor & fairings as well.

Besides, isn’t against the spirit of things to use an racing chassis?

Against the rules too, I believe...

[F5 Dave]

Actually chassis is free, but no competition internal motor parts are to be used

[Eddieb]

Besides, isn’t against the spirit of things to use an racing chassis?


Hmmmmm, pot, kettle, black.

[bungbung]

I think the rules refer to competition engine and gearboxes. Frames are a free-for-all. Although not necessarily in the spirit of things.

[F5 Dave]

:innocent:

[bungbung]

ooops, not fast enough. F5 is first off the blocks.

[Eddieb]

But if you do find some, or an RGV or similar rolling chassis, I'll have one.

[GSVR]

I thought it would be a nice frame to put some hot 4 stroke motocross motor into and race in F3 like that Tigcraft of Jason Eastons.

So what would be a good bucket motor?

[F5 Dave]

Virtually nothing fits in an early RS125 chassis. Due to the shape of the CR125 motor the RS was based on, the gearbox output & the position of the rear shock are restrictive. You can get a 50 in, (requires quite some careful tinkering), but not a 100 without severe work. I've done this too, but what a mission & it still doesn't really fit.

Later model RS might be easier, but they are worth real money.

[Kickaha]

. You can get a 50 in, (requires quite some careful tinkering), but not a 100 without severe work. I've done this too, but what a mission & it still doesn't really fit.



There's two with MB100 motors fitted to them in Chch and one of them didn't take to long to do

top shock mount had to be modifed for carb clearance and fuel tank as well but apart from that the chassis didn't have to cut and shut much at all

[F5 Dave]

Hell's teeth! That's what I have (started 6 years ago).

Needed to water cool it to get the barrel to clear & full case reed it to get the carb out of the way & cut a hell of a lot.

With the std motor the carb is in the middle of the shock? Are they old canterlever chassis?

Seen an RX125 in one I admit, but rubbish motor.

[diesel pig]

Both frames are 90-91 era, one uses a downdraft 28mm flatside off a kr or tzr 250 and the other one moved the frame shock mount to one side and moding the bottom of the stock RS tank, this made possible by the ball joint type mount on the swingarm. Both are air cooled with only minor fin shaving one uses the head mount on the MB motor and the other uses the RS front mounts, both required lots of alloy welding so unless you have a TIG welder it is not a cheap project.

[speedpro]

I've got my custom rear engine mounts tacked to the MB cases now. Now just gotta do the head mount, then get the shock out of the way, lift the seat/tank to clear the shock mount and give me some leg room, etc etc. Check out Nigel's one in attachment, 27.5hp, beautiful work.

[Kickaha]

what barrell has that got one it?

[bungbung]

Check out Nigel's one in attachment, 27.5hp, beautiful work.

27.5hp?

That's against the spirit of competition :shake:

[F5 Dave]

Yeah the front mounts would go straight through the exhaust pipe, but you could extend them. I have a cradle, but it was a bad idea.

Problem may be the front engine mount of an MB100 is a bad place to mount the engine, many people who do crack the engine cases. The rubber mount may help though.

Man that Bike is nicely made!

[speedpro]

Nigel's barrel is a sleeved down RGV250 cylinder.

I've cut the RS front engine mounts off and will reweld them to the frame without the square legs. A bolt will go through them and a bracket on the head. I've removed all the stock MB100 engine mounts and the gussets from the crankcases. The motor is quite small with them gone and makes it a lot easier to fit in. The carb and shock mount still want to be in the same place.

As for 27.5hp being against the spirit of competition, that's the intention. The same guy who spec'd Nigel's motor designed mine to make a 'bit' more. :whistle:

[Ivan]

All I want is a chassis I dont care if its got no plastics or anything. As I want to have a bucket so I can jump off my 125GP bike and straight onto my bucket and dont have to readjust my riding stle and use buckets as a learing class to get used to throwing a 125 chassis around tight fast bends like kiatoke or General Motors. So does anyone know of two chassis either RS or TZ or both

[speedpro]

All I want is a chassis I dont care if its got no plastics or anything. As I want to have a bucket so I can jump off my 125GP bike and straight onto my bucket and dont have to readjust my riding stle and use buckets as a learing class to get used to throwing a 125 chassis around tight fast bends like kiatoke or General Motors. So does anyone know of two chassis either RS or TZ or both
What about an RG150 chassis, there's a few up here and I suppose it's the same in Wellywood.

[Ivan]

Nah no way Im using my bucket for practice and want something identical or similar to what I race the RGs r bulky

[F5 Dave]

Don’t get too hung up on being the same chassis. Being able to be diverse on a number of different bikes is a skill best fostered at a young age. A primadonna may specialise but fall to pieces when something is wrong or the bike changes.

Someone like Fishe can jump on anything & go as fast as poss straight away. I can crank my 50 up pretty well but many people who have ridden it hate it. We had a swappa bike race & there was this GC110 I could hardly get around the track. Fishe got on & was pretty much in contention with everyone else on unfamiliar but better bikes.

All riding is good riding. Trials riding has helped me on the track. People like Holden used to ride several classes a day & he became head & shoulders above most others.

[Ivan]

Yeah look at Jay. He is on rails he is legend on the 125 and he was good from the first round because he was used to the chassis from buckets. Im racing his 125 and want to have a good training bike for the rounds I do this year. I know that about Fish but he is good

[F5 Dave]

At Kenny Robert’s ranch they train for Grand prix road racing around a dirt track oval on XR100s. Let’s see, . . I’m counting 5 world champions who regularly returned there.

But what would he know?

[Ivan]

Does anyone have a 125 chassis it has to be a gp bike no worry on year but I dont want a motor in it. I want to use my bucket for practice

[gav]

Build your own frame/chassis....sadly another unfinished project that bit the dust.... :confused:

[Ivan]

Are you getting rid of any of those bikes cause my min is hinting for me to do some adjusments on one of those. How long did it take you to make that frame.

[gav]

Sorry, ending up flogging them off on TradeMe, way too cheap too :confused:
How long? about 5 years :killingme nah, dunno really, just an after work project, but I was working in a m/c shop at the time ...... :shifty:

[Ivan]

Oh ok if anyone can find a chassis in wellington through to palmy region I would be interested. From what I have seen Dave and Jay look good on thiers they are such a light bike and easy to fling around not like a RG50 Chassis. P.S anyone got any mos for a RG50 to turn it more race bike might make me some better footpeg mounts.

What was your last Chassis Dave it looked pretty cool

[speedpro]

Couple of good things to do is fit a bigger disc, NZ250 disc goes straight on and then just extend the caliper mounting bracket back to fit. Fit a well made light fork brace. The differance is astounding. I was doing some work on the front of mine and forgot to tighten the pinch bolts on the clamp and holy hell . . . . dont just bolt on a bit of alloy/steel but make sure it actually does something. I've seen lots that just add weight. Build up some 2.15" spoked rims and fit decent tyres.

Then throw the whole lot away and buy a cheap RS125 and tear your hair out(assuming you have some) trying to fit your engine into it. My RS chassis cost $500. Mint condition '91. For that money you couldn't get a better small light chassis.

[k14]

Speaking of RS125's etc, anyone know of a spare set of rims lying around from a pre 95 RS then give me a yell.

I'll keep an eye out for a frame for ya.

[Ivan]

Sweet as will look for some rims for ya as well

[F5 Dave]

Yeah my last chassis was. . . an RG50. I'd just lowered it, added a few braces, clip ons & a race seat. Made a huge difference to the riding position & handling. The RS is very similar in wheel base & height.

Actually I’ve raised the seat on the RS as it was too low, designed for 40 kilo Japanese midgets.

[ManDownUnder]

I've got a free GPz550A1 chassis (complete with swingarm and steering head if that's of use to you. It's in Taranaki though...

MDU

[speedpro]

I've got a free GPz550A1 chassis (complete with swingarm and steering head if that's of use to you. It's in Taranaki though...

MDU
The Wellington guys will be into that. Nice big heavy chassis to put their weak engines into. :whistle:

[F5 Dave]

Come back to the 50 class again & say that. :whistle:

[ManDownUnder]

The Wellington guys will be into that. Nice big heavy chassis to put their weak engines into. :whistle:

Hey - I said "free" - "ideal" was never mentioned :ride:

It survived 10 years riding in Taranaki... Wellington would be hard pressed to do anything beyond what I gave it.

The offer is open to all... you want it? PM me.

MDU

[Ivan]

I want to get as much track time as possible on a 125 even if the motor is the same. I am willing to pay 500 dollars for a chassis I just brought a RS for 5000