Bucket bits 4 sale

[husaberg]

The only thing i have up that alley is a enough bits to build a few 350/4 hondas
pretty sure they is a loose head and cylinder or two, but they are a shit design.
but if you want a parallel twin 4t its pretty much limits you to honda.
if it was wanting to do a forced induction twin i would want to do a 360 crank which means CD for the earlty stuff
those later 1990's SOHC CB250's were essentially a overbored 125 about 230cc . there was a cd and a cb cmx version all were 360 crank.
They were 53mmx44mm so a 125 stroke (they were 41.4mm)i bet they had a better clutch and gearbox. EDit turns out its the same hub.
They were a shitty commuter bike so they should be cheap.

the mains are the same size as the CB400n/T CB450T so they should be ample
they also have a 28mm crankpin

https://i.ebayimg.com/images/g/EgQAAOSwARZXm3SE/s-l500.jpg
A cb125 to 150 would likely need sleeves anyway wouldn't it? Mike?

pretty decent size valves as well
https://i.ebayimg.com/images/g/Nv0AAOSwt5ZgRhLD/s-l500.png
pretty much a Xl100s valve

plent of room for a nice sealing surface
https://www.motor-x.com/thumbs/700x700x1x1/images/33/fd4de7533abdbbd5977bb2adfb75d50f.jpg
https://encrypted-tbn0.gstatic.com/images?q=tbn:ANd9GcRl7CVqQoHMEhkNmt2fS3NQEdy2IfLgc AKy4w&usqp=CAU

my 2 cents

[Flettner]

The only thing i have up that alley is a enough bits to build a few 350/4 hondas
pretty sure they is a loose head and cylinder or two, but they are a shit design.
but if you want a parallel twin 4t its pretty much limits you to honda.
if it was wanting to do a forced induction twin i would want to do a 360 crank which means CD.
those later 1990's SOHC CB250's were essentially a overbored 125 about 230cc . there was a cd and a cbversion both were 360 crank.
They were 53mmx44mm so a 125 stroke i bet they had a better clutch and gearbox.
They were a shitty comuter bike so they should be cheap.

the mains are the same size as the CB400n/T CB450T so they should be ample

Thankyou, yes I am looking at changing the crank to 360, even pulses for the supercharger.
Single overhead cam CB250 twin, that sounds like me. Cheap. Now to locate one.

I couldnt bring myself to cut up your cyclinder mold. Im building up a "sand blowing" machine to blast CO2 sand into you dies. I need this equipment anyway for when I start blowing Shell Sand cores. My foundry mate reckons it will work. I can bolt your dies into my Shell Sand Molding machine.

[husaberg]

Thankyou, yes I am looking at changing the crank to 360, even pulses for the supercharger.
Single overhead cam CB250 twin, that sounds like me. Cheap. Now to locate one.
.

Simon at goodparts had one i think being wrecked.
https://nzbikeparts.com/honda/


CMX was the shitty custom
CB was a mild custon street
and CD was they oldie styled comuter
They looked like two XR100 engines which essentially they were.

reserve met at $700 wof and reg
https://www.trademe.co.nz/a/motors/motorbikes/motorbikes/cruiser/honda/listing/3684912861



I couldnt bring myself to cut up your cyclinder mold. Im building up a "sand blowing" machine to blast CO2 sand into you dies. I need this equipment anyway for when I start blowing Shell Sand cores. My foundry mate reckons it will work. I can bolt your dies into my Shell Sand Molding machine.
oh shit set up for mass production

[Flettner]

Two questions? What would a 350 four head and cam be worth? The worst one. And do you have a picture of one?

[Grumph]

Two questions? What would a 350 four head and cam be worth? The worst one. And do you have a picture of one?

They need a shitload of work to make power, they're heavy and single cam with poor rocker geometry.

[Flettner]

They need a shitload of work to make power, they're heavy and single cam with poor rocker geometry.

The project is supercharged and it would put the cam drive on the side, where I want it.

[Flettner]

A pitty, the FZR would make a nice little compact head for the project. Next to a Honda 100 cylinder, supercharged CB 100 era.

[husaberg]

Two questions? What would a 350 four head and cam be worth? The worst one. And do you have a picture of one?
free, i will be near one one the weekend, did that Fzr head come from me as well?

A clever guy like you could wrangle one of those on top of a VT250 case in a couple of hours,(fzr) the rear can be your supercharger drive they are nearly wide enough std. The box is good enough for 45HP

They need a shitload of work to make power, they're heavy and single cam with poor rocker geometry.

Yes, even at the time they were thought of as shit. nothing much has changed since other than hats good has got better.

[Flettner]

Id certainly like to have a look at a 350 4 head, even if only it would be in keeping with the era look. And free. I have a 360 degree crank partially built already, solid from a piece of 4140, plain metal bearings. Cases?? Are you sending me a VT as well? And I have a nice super charger lined up. A spare LINK computer for fueling and ignition. Nothing was stipulated about fueling, so EFI it is. Even if I have to keep it discreet like I did with my 350 Kawasaki. E85 allowed and nitro if I want. Like I said, this class was made for me, only they dont know that yet. Hahaha, all it has to do is paste roughly hotted up TF 125's, and make a lot of noise doing it. What about a cylinder bank? They dont know the can of worms they have opened.

[pete376403]

Id certainly like to have a look at a 350 4 head, even if only it would be in keeping with the era look. And free. I have a 360 degree crank partially built already, solid from a piece of 4140, plain metal bearings. Cases?? Are you sending me a VT as well? And I have a nice super charger lined up. A spare LINK computer for fueling and ignition. Nothing was stipulated about fueling, so EFI it is. Even if I have to keep it discreet like I did with my 350 Kawasaki. E85 allowed and nitro if I want. Like I said, this class was made for me, only they dont know that yet. Hahaha, all it has to do is paste roughly hotted up TF 125's, and make a lot of noise. What about a cylinder bank?


How "tuneable" is the Link computer? I have been messing about with Speeduino (open source / Arduino) with a view to putting it on the KLR, and if I can get that working ok, the GS1100G as well. It uses Tuner Studio to set the parameters.

[Grumph]

The FZR head has fins on it. Mated to a finned barrel and using oil as the coolant for the head I reckon you'd get away with it.
The GSXR Suzukis were accepted as air-cooled in speedway as nearly everything else used an oil cooler too.

Nothing in the rules about oil coolers or cooling ?

[Flettner]

The FZR head has fins on it. Mated to a finned barrel and using oil as the coolant for the head I reckon you'd get away with it.
The GSXR Suzukis were accepted as air-cooled in speedway as nearly everything else used an oil cooler too.

Nothing in the rules about oil coolers or cooling ?

Or I could take rubber molds out of this head and recast with fins. Or even cast solid bits and machine the fins in.
I dont know??

[Flettner]

Stop looking, I have a donor engine, thankyou.

[husaberg]

Stop looking, I have a donor engine, thankyou.

Whata got Neil

[Flettner]

Im too ashamed to say.....

[husaberg]

Im too ashamed to say.....

I would have thought a guy that used weedeater pistons in a race bike would have no shame.
A Chinese 125 twin?

https://www.motorbikespecs.net/images/Chinese_Motorcycle/Engine_244FMI_125cc_Twin_00-10/Engine_244FMI_125cc_Twin_00-10_1.jpghttps://www.chinesemotorcyclepartsonline.co.uk/images/partimages/120600025-1_none_600.jpg

[F5 Dave]

Or worse. A *onda. And a fecking foul stroke at that.

[Flettner]

I would have thought a guy that used weedeater pistons in a race bike would have no shame.
A Chinese 125 twin?

https://www.motorbikespecs.net/images/Chinese_Motorcycle/Engine_244FMI_125cc_Twin_00-10/Engine_244FMI_125cc_Twin_00-10_1.jpghttps://www.chinesemotorcyclepartsonline.co.uk/images/partimages/120600025-1_none_600.jpg

That, I certainly would be ashamed....

[Flettner]

Ive got an XS 250 lined up. Never seen one but its cheap enough. Pressure fed mains, kick start, six speed, heavy clutch.
I need to make a new small crankshaft, new hollow camshaft with the drive on the LH side of the engine, toothed pully. Rip every part off not needed including the electric start if it has one. Flywheel and stator replaced with something more suitable, perhaps a YZF MX one.
Every effort to cut its weight.
Calculations indicate potential of 40HP, so it really does have to be a bigger engine, scaled down.
If we dont make 40HP, we start blending nitro, until it does. All perfectly leagal, apparently.

[husaberg]

Ive got an XS 250 lined up. Never seen one but its cheap enough. Pressure fed mains, kick start, six speed, heavy clutch.
I need to make a new small crankshaft, new hollow camshaft with the drive on the LH side of the engine, toothed pully. Rip every part off not needed including the electric start if it has one. Flywheel and stator replaced with something more suitable, perhaps a YZF MX one.
Every effort to cut its weight.
Calculations indicate potential of 40HP, so it really does have to be a bigger engine, scaled down.
If we dont make 40HP, we start blending nitro, until it does. All perfectly leagal, apparently.

Okay std they are points on side of cam like a xr200 you could just subsitute a xr200 inductor and pulse coil.
they should be robust as i think they were more a shrunk xs360-400 than a over bored 125.
there was late one that was DOHC
looks like the ratios are very dirtbike like
351485

[F5 Dave]

Oh jesus Save us. Yes they do have an electric start, but only on the brochure, not the real world. Getting rid of the chassis would be a great start as they are fukin dreadful even on the road.

[Flettner]

Okay std they are points on side of cam like a xr200 you could just subsitute a xr200 inductor and pulse coil.
they should be robust as i think they were more a shrunk xs400 than a over bored 125.

Yes it worries me just how bulky it might be, I guess Ill find out when it turns up. Supercharger weighs 3.5 kg alone.
Out of intetest as a comparison on what old shit weighs my F9 tank is 4kg, just the tank.
The Points and all will be gone, LINK will take care of ignition / injection. Besides, thats where the cam drive will be. Cam chain will be gone, no need to machine a silly little sprocket into the centre of the new crankshaft.

[Flettner]

Oh jesus Save us. Yes they do have an electric start, but only on the brochure, not the real world. Getting rid of the chassis would be a great start as they are fukin dreadful even on the road.

Its just the engine thankfully. I'll find a more suitable, off road frame. Restrictions on the frame are only
36mm forks
Twin rear shocks.
Drum brakes.
Thats it.

[husaberg]

Its just the engine thankfully. I'll find a more suitable, off road frame. Restrictions on the frame are only
36mm forks
Twin rear shocks.
Drum brakes.
Thats it.

Some of the gearbox gear are the same as RD250 and 400 suggesting it can be swapped out
looks like the cams can be swapeed between the 360 and 400 as well

[Flettner]

Some of the gearbox gear are the same as RD250 and 400 suggesting it can be swapped out
looks like the cams can be swapeed between the 360 and 400 as well

That doesn't sound so good. Maybe its bigger and piggier than I thought.

[Grumph]

That doesn't sound so good. Maybe its bigger and piggier than I thought.

It's a smallerised version of the 360 twin. The really amusing thing about them is that they were pretty much limited from birth. Both the 250 and 360 used a fuel tap which would run the carb dry after about 1 1/2 miles at full throttle. Or up the Tunnel road in ChCh. I made one go quicker for longer for a Catholic priest by boring the tap out.
I suspect you may be disappointed at it's size and mass.

[F5 Dave]

You exorcised the demon of constriction. :devil2:

How is Mr Orr these days? Still racing at all?

[Grumph]

You exorcised the demon of constriction. :devil2:

How is Mr Orr these days? Still racing at all?

Right out of it to the best of my knowledge.

[husaberg]

Right out of it to the best of my knowledge.

i can remember helping to sell a new red 95ish CB250 nighthawk to a catholic priest , that was the engine i thought was the better option as it was an overbored 125 for Flet.

[Flettner]

40HP, I guess I dont want it too light. I havent actually put any money down yet.

[F5 Dave]

Well you can strip out the electric starter gubbins but it will still be a boat anchor. Natural terrain grass tracks might be nicer on the body.

[Drew]

Hi team. Does anyone happen to have a TZR250, FXR250/400/600/750 front guard lying around? Just to save me having to fab one to my bike.

Cheers
Drew