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May 13th, 2015, 08:43 PM   #1
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1198 cylinder

Got the 1198 (106mm) cylinder here now.
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May 13th, 2015, 09:01 PM   #2
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nice Spanner

what do you think is the usable stroke in mm ?
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May 13th, 2015, 10:35 PM   #3
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Hi Bushie,

The 1198 stroke is 67.9mm.
Cylinder length is 111mm.

Not sure how to make it work yet:
The stud positions are frustratingly close

The 1198 heads are cheap, not sure about all that fancy pants
valve gear, I wonder if it requires less power to drive?

As you can see from the photo there is enough material to leave a flange that could extend to the periphery of the head gasket except the cam chain area, which would need to change anyway.

The flange could be made to whatever thickness that is required.

Wall thickness seems to be a nominal 10mm.
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May 14th, 2015, 03:59 AM   #4
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it does look very good

plenty of meat to work with

desmo head perhaps less work if you could use the liner unmodified ....
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May 14th, 2015, 05:10 AM   #5
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Originally Posted by spanner View Post
The 1198 heads are cheap, not sure about all that fancy pants
valve gear, I wonder if it requires less power to drive?
no springs to work against right?

i've also seen the desmo stuff speculated to allow for more aggressive cams, fwiw
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May 14th, 2015, 09:26 AM   #6
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still confused as to your plan regarding the valve train and head. Ducs are belt and gear driven desmodromics, where's the cam chain going to go?
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May 14th, 2015, 06:12 PM   #7
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desmo head perhaps less work if you could use the liner unmodified ....
More like a conventional engine with a crankcase, barrel and head Bushie?
I have not explored that possibility, not sure how the barrel would attach?

no springs to work against right?
Yes that is what I was thinking tourist, The weight of the 1098/1198 heads would also be interesting to know. The 1198 barrel is a surprisingly heavy 3kg.


still confused as to your plan
Well so am I Goose

The 1198 head valve sizes are 43.5 inlet and 35.5 exhaust.
Although the smaller valved 1098 42 inlet 34mm exhaust, may be more suited for a single cylinder.

The valve drive would have to be changed to a chain + gear drive, I think that would be the easiest option.



Or I could use the less available ie expensive Husky 510/630 head which has the inlet at a more Husaberg friendly angle, but that has small valves 37 inlet and 32? exhausts, I have not been able to find out how much bigger valves can be fitted to that head, but would most likely have to move valve centres and seats (if possible) to get 40mm+ inlets, Xray eyes would be handy. I like the simple design of this head compared to the Ducati possibly lighter as well.
The 510/630 stud holes are frustratingly close to the Husaberg`s as well.[IMG][/IMG]

Keep the thoughts coming good to get ideas.

spanner
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May 15th, 2015, 08:46 AM   #8
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I, for one, am totally stoked to see this happen! Can you weld or somehow create an outer shell for the cam chain? Sort of an external sleeve (attached cam chain cover - bridge from the case to the head?) for the cam chain to run through?
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May 15th, 2015, 09:35 AM   #9
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Are there no Kiwi's involved in this project?

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flame suit on maybe
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May 15th, 2015, 02:58 PM   #10
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Are there no Kiwi's involved in this project?
There might be....
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