The Dogcati

[F5 Dave]

I built mine about a decade before his but the mincer I used to do the welding of the barrel and cases just kept trying to fix his mistakes and the aluminum was separated from the steel liner. It was a brand new nos barrel I'd got for $85, but it was irreplaceable. Felt so despondent I wheeled it under the house for many years. When I first built it it was a generation ahead of anything else out there yet to an old school bucket budget.

I think his had a tiny carb on it.

[husaberg]

Care package arrived from Andy at Ducatispares

https://www.ducatispares.co.nz/
https://www.facebook.com/Ducatispares.co.nz

Seals for front and rear calipers and Master Cylinders.
I already had a new std style front lever and some new reservoirs
Cam Belts
14T Sprocket as they only put a 15T on them to pass the drive by noise test.
When the chain on it gets worn I will do 520 chain conversion.


Engine breather is Alloy as the plastic ones tend to break.

Oil filter
Air filter (SR4)
Quick action Throttle
New Throttle cable. as the Dogcati currently has a twin cable very slow action one of a Carby Monster.
Bar grips.

New oil pressure sender as these can let go releasing all the oil in the process. (in time I intend to run a braided line frome the sender to the cams as this gets oil quicker to the fragile rockers.
Plus arrived quick all at bloody decent prices.

Andy also found a SR4/s2r airbox lid for me

One weird thing with the Airbox lid above.
It looks like some sort resonant chamber or an intake silencer baffle
any ideas?
(I have lite it it from underneath hence the light at the end)



Hes also found me a moth eaten ratty ST4 tank I am intending to chop up into a dummy tank

I mocked up some Daytona rear sets off my old bucket but the original bracket places the pegs a touch too far forward..
So I will need to find some alloy plate.


I have also had a bit of a poke around and I think I can directly substitute the later coil on plug set up in place of the std coil packs
That way I might be able to tidy up some of the massive rat's nest of wiring.

[sugilite:Me]

Great work mate, enjoying seeing what you are doing with this machine

[husaberg]

Great work mate, enjoying seeing what you are doing with this machine

Thanks, its never work when its enjoyable, Hopefully in the next few weeks the bodywork will be ready.
I am going for a more retro look.

[Hairymcsweary]

I can't reply to your message, your inbox must be full. This is the bike I'll be using in the hill climb and sprints at the Burt. Unsure of year all I know is its pre 89. Bike belongs to Butch Woods, he bought it as a parts bike and decided it was too good to wreck. He did nothing with it for more than a year and then he decided to let me give it a run at the Southern Classic last Nov. He enjoyed seeing it run after we sorted a couple of comical issues which I'll share with you in person, and is keen for me to keep racing it. It's an ex Andy from Ducatis Spares bike and used to be owned/raced by a guy called Gary who loved running at the back of the pack.

[Kickaha]

I can't reply to your message, your inbox must be full..

It Is, I get a message saying it's reached its limit

[husaberg]

I can't reply to your message, your inbox must be full. This is the bike I'll be using in the hill climb and sprints at the Burt. Unsure of year all I know is its pre 89. Bike belongs to Butch Woods, he bought it as a parts bike and decided it was too good to wreck. He did nothing with it for more than a year and then he decided to let me give it a run at the Southern Classic last Nov. He enjoyed seeing it run after we sorted a couple of comical issues which I'll share with you in person, and is keen for me to keep racing it. It's an ex Andy from Ducatis Spares bike and used to be owned/raced by a guy called Gary who loved running at the back of the pack.

Butch can be pretty entertaining at prize givings.
Pre 89 is such a cool class.

re the box i had emptied it the other day but yeah it might be full.
Ducatis are a cool bike and they are what I feel is a "formula kit bike" what you do is well known to get them faster or handle better lots of parts can be improved or swapped and knowledge is freely available plus you can do a bit as you go and as budget allows. Also of course for a 4t the sound can be glorious.
I am glad glad the pre 89 rules allow a slipper clutch, those pre 82 ones don't .Although raising the idle can help.

oh yeah did nothing on the Dogcati.

[husaberg]

Good to meet you in person Hairy, and to Catch up with Eddie
We took the Dogcati to the Burt I was planning on getting some help with the Cams but run out of time .
I guess the cats out of the bag that the Dogcati is transitioning into a race bike..
The fairings and tank are not finished so it won't make the SOT, but that's life.

[husaberg]

I haven't been busy but others have.
My Fiberglass guy is making good progress the fairing and seat and tank cover.




Hopefully it will be ready next week as we are over in CHCH racing sat and Sunday, so we can detour down to pick them up. Sat night.
Dave uses one mold for road 851 and race 851 So all race fairing start with indicators and headlights.
I am just grateful there are still artisan people with these molds in NZ, as ducati only made 5000 851/888. Which I think is how many Honda made of the RC30.
He's even going to make me a the TZ tank for my other stalled RD/TZ project
He's going to add in the lower slot so I can use the st4 intake I just got off Andy so I can have 3 air feeds to the Airbox not for ram but to allow decent cold airflow

I got a larger bonus than expected So i have been able to buy some extra stuff for the Dogcati ahead of schedule and I don't need to sell my kidneys to pay for the fibreglass work.
So thanks to Andy at Ducati Spares
https://www.facebook.com/Ducatispares.co.nz/


For the Dogcati I ordered some lightweight adjustable pulleys in anodized Egral 7075
https://www.ducatispares.co.nz/produ...le-cam-pullies

The Dogcati needs these, as no Ducati is timed anywhere It needs to be std let alone to make it suitable for racing.
Some reading here and here on Ducati cams and timing.
https://www.bikeboy.org/camtime4v.html
https://www.bikeboy.org/888cams.html
https://www.ducatispares.co.nz/blogs...acebike-part-2
https://www.bikeboy.org/sr4camtime.html




Andy also had the proper side mounted battery box for the ST4 which is similar to the 851 set up.
i have the timing tool so i can lock the pulleys in place to change the std pulleys on my 851

https://www.ducatispares.co.nz/colle...ing-tool-4-pce
Plus some other stuff for my real 851

Like these, which too cheap not to get.
https://www.ducatispares.co.nz/produ...-851-36140031a

esp this piece.

https://www.ducatispares.co.nz/produ...78810441a-copy

Andy is constantly adding new stock to his website and is able to source stuff at great prices for bike not luck enough to be born Ducatis as well

For instance high quality US made carbon pads and quality Italian Newfren clutch plates we just got for the CBR600rr At bloody decent prices
He also sponsors a shit load of racers in the South Island.

[HenryDorsetCase]

I like this thread. I want another Ducati now

[husaberg]

I have been scheming on how I am going to do the breather system.
Ducatis being a 90 degree twin fire 90 degrees apart then a gap of 630 degrees to the next firing they move a lot of air under there pistons as well as above and this windage costs power so they are not much better then either a a old pommy 360 crank or a single.
So they require careful attention to the breather system to make power at high revs and keep their oil intal to the engine.
Ducati breather with the plastic breather and the Reed built in are known to be inefficient and a weak link, when a plastic one lets go, it has a habit to directly oil the rear tire.
Same with the oil pressure sender (as Laava and any others before him) recently found out

What I plan to do is increase the diameter of the breather 2 piece CNC breather I have from 20mm ish to 25mm an then have my own version of the corse 888 and 748 system
this goes under the seat and has a 25mm entry at the bottom and a 22mm exit at the top which goes to the airbox where it will breath through a 4 petal 2 stroke Reed valve from a chainsaw/RC plane.

It's meant to be worth about 3 hp at high revs and also makes sure all the oil gets returned to the crankcase. So none ends up in intake or the rear wheel
I was thinking I should be creating a seperate system with vacuum like the late indycars with a vacuum pump ,or the vacuum from the ex pipes .but TBH that seems OTT, KISS wins.
The other benefit is if the bike blows up internally the oil gets blown into the breather tank which doubles as a catch tank.


I intend that it will look like his only likely less carbon to a start off. It took me a bit of figuring out but the breather 1'' from the engine goes into the bottom the outlet tube at the top 3/4''goes to the Reed in the Airbox.

[husaberg]

I like this thread. I want another Ducati now

Treat yourself Enry...
Cheers it a refreshing change to have bike stuff on KB outside a few threads.
Plus there are only so many times you can engage with stupid people saying increasingly stupid stuff.
Especially those where they seem to be deluded enough to Dunning Kruger themselves into believing as they read a blog they know more than actually medical and scientific experts do.

Anyway a guy I work with is doing up a 860 darmah, every bill he gets for the guy doing the work is 5k.
I am sure it will be beautiful but it's still an old darmah LOL.
I am not sure, but my where my total budget is at atm , but that was meant to be my total including buying the thing .. but like all race bikes, it will evolve over time.
Plus I am terrible at maths sometimes

Ducatis need not be expensive 916 and 748 749 and 999 are still reasonably affordable, st4 and ST4s are criminally cheap and very usable and improvable. Plus are so gorgeous look at and to hear.(pretty applies to 748 and 916 not ST's)
There was a pretty cool older 750SS for sale the other day.the boxy 89 styling and colours with a later USD front end looked very cool.
That would have been a great Sunday afternoon and town bike.

I was looking at a Husky 701 the other day it was a pretty low seat (for those shorter than av) and it does a indicated 220kph at Ruapuna stock. so fast enough to still not be boring. they probably will be doing deals at the moment.....

[Kickaha]

Hopefully it will be ready next week as we are over in CHCH racing sat and Sunday.

Fuck I forgot about you, I went out there Friday just to have a look at Daniel's BMW, which was very second hand by the end of practice

I like this thread. I want another Ducati now

No you don't

Anyway a guy I work with is doing up a 860 darmah, every bill he gets for the guy doing the work is 5k.
I am sure it will be beautiful but it's still an old darmah LOL.

An engine alone is an easy 5k+, don't ask me how I know

They called a 900 Darmah (yes I know they're really only a 860)


A lot more beautiful than that belt drive rubbish (with the exception of the F1)

[husaberg]

Fuck I forgot about you, I went out there Friday just to have a look at Daniel's BMW, which was very second hand by the end of practice


An engine alone is an easy 5k+, don't ask me how I know

They called a 900 Darmah (yes I know they're really only a 860)


A lot more beautiful than that belt drive rubbish (with the exception of the F1)

We are over this week coming for Cams and MCI. Just with the F2 Honda though.
The Motard is still waiting for its new extended water pump shaft.

To tell you the truth they are called a SD or SSD900
I never figured out what the SD stood for the SS GT ST MHR all make sense...
I would rate the 851 in race trim as pretty as an F1, but neither hold a candle to a TTF2.

PS the MHR was ugly as was the S2. Only now is the SD900 is growing on me, after what 40 plus years later.
The GT750 and 750SS and 900SS and late 250/450 were the lookers.


Anyway I doubt we will agree, so I did the quick math today I am only 15% above budget with some judicious creative accounting...
Go try and build a bevel race bike as competitive as that in its post classic race class as a Corse spec pre 89 916/851.
plus the 916 851 has a glorious sound all of its own.

It should look like this only with less carbon and mag and far fewer corse bits of course for a start off.
but it needs the white wheels





Whilst it won't worry a decent FZR1000 at Ruapuna or Teretonga I think it will put the fear of God in them at Levels Greymouth and Whanganui.
With enough $$$ I think I can achieve 145KG and 145 HP.
On the other hand I can't see a race spec F1 worrying a XR69 at most tracks aside from street races. Not to mention pre 82 cant run slippers unless the had them from new or were a period mod ala ELR or FWS or nr500 or probably CB900F

[Kickaha]

PS the MHR was ugly as was the S2. Only now is the SD900 is growing on me, after what 40 plus years later.
The GT750 and 750SS and 900SS and late 250/450 were the lookers.

The S2 was, the MHR was fucking gorgeous https://www.kiwibiker.co.nz/forums/s...bella+italiano

Anyway I doubt we will agree,

We won't, mostly because you are wrong and no 851 will ever sound better than a bevel on contis

I'm actually heading to the coast but might be back for the weekend, if I remember I will callout to the track