Husaberg
Go Back   Husaberg Forum > Mechanical and Technical > Mechanical

Mechanical Mechanical Forum - spinning bits and gyrating bobs


Thanks Tree43Thanks
Reply
 
LinkBack Thread Tools Display Modes
December 8th, 2015, 10:51 AM   #21
Senior Member
 
Joined: Sep 2007
From: ???

Posts: 774
Thanks: 277

I Ride:
Yes Tom Tom, 24cc vs the Husabergs 38cc.

Will gain a few cc`s with bigger valves and chamber reshaping, the
rest will be in the piston top.
Thanks from bushmechanic
spanner is offline  
 
December 10th, 2015, 09:45 AM   #22
Member
 
Joined: Jun 2011
From: fréjus

Posts: 41
Thanks: 16

I Ride: bmw 1100 rt / many ktm 690
This is not an Berg , but some of you may like it

1098 head / 1198 piston and liner / Ktm 690 engine






Here is the bike ready to go










.




.
Thanks from Dr_C, bushmechanic and spanner

Last edited by fdracing; December 11th, 2015 at 09:30 AM.
fdracing is offline  
December 10th, 2015, 11:35 AM   #23
Senior Member
 
Rainerio's Avatar
 
Joined: Jun 2013
From: San Francisco CA. USA

Posts: 740
Thanks: 158

I Ride: 7 Husabergs two FE570S,FS570 FE390/450,07 FE650,05 FE550,2 Husqvarna's 86 WR400,87 510,09 Buell
thinking of getting a 701 Husqvarna so any thing is helpful Thanks
Rainerio is offline  
December 10th, 2015, 02:31 PM   #24
Senior Member
 
Joined: Sep 2007
From: ???

Posts: 774
Thanks: 277

I Ride:
Nice fdracing, thanks for that!


Tom Tom, Haha! Should you ever need measurements from ducatis, let me know.
Hi Tom Tom, Can you inform me of the pin size of the 1198 piston, and the
compression height? if possible.

Not sure if the Ducati piston would have enough thickness in the crown to allow for a dish to be milled to reduce the compression or if they have a lower compression piston for the less HP version?
Thanks from bushmechanic
spanner is offline  
December 11th, 2015, 02:10 AM   #25
Senior Member
 
Joined: Nov 2012
From: Sweden

Posts: 401
Thanks: 304

I Ride: HB 570 FE
Originally Posted by spanner View Post
Can you inform me of the pin size of the 1198 piston, and the
compression height?

Not sure if the Ducati piston would have enough thickness in the crown to allow for a dish to be milled to reduce the compression or if they have a lower compression piston for the less HP version?
Pin size is 20mm (Witdh for the rod is 21.2mm)
Compression height is 25.4mm (measured on the bench, not from a blue print).

1198 piston has a 2.6mm dome, dont think it will be enough material as the material is domed inside the piston aswell.
1098R piston is the same but flat top(smaller combustion chamber).
The lowest comp ducati pistons are flat, so no dished available Im afraid.
Thanks from bushmechanic and spanner
TomTom is offline  
December 11th, 2015, 06:30 PM   #26
Senior Member
 
Joined: Sep 2007
From: ???

Posts: 774
Thanks: 277

I Ride:
Thanks Tom Tom, I thought that might be the case.

I should have also asked what a piston of this size weights?
spanner is offline  
December 12th, 2015, 07:53 AM   #27
Member
 
Joined: Jun 2011
From: fréjus

Posts: 41
Thanks: 16

I Ride: bmw 1100 rt / many ktm 690
the 1198 , 106 mm piston is 507 grs including rings and pin .

the crown is very thin , i personnaly took off 1mm to match my comp ratio

mesured on my piston the stock comp height is 25.9 mm , stock overall height is 45 mm , i reduced it to 35 mm.

the final piston weight is 450 grs , just what you need for an 80 mm stroke engine at 8500 revs/min


.
fdracing is offline  
December 12th, 2015, 08:57 AM   #28
Senior Member
 
Joined: Nov 2012
From: Sweden

Posts: 401
Thanks: 304

I Ride: HB 570 FE
No real idea where to get a good piston other than custom order.
On the 106mm race bike I use pistal pistons that are a lot lighter but they have even thinner material.
I have some left over pistons from another 106mm engine in the garage, they are heavy compared to oem so perhaps they have more material in the crown, if so I can donate them, Ill check tomorrow when in the garage. I can drill one and see, not going to use them anyway.

Last edited by TomTom; December 12th, 2015 at 09:01 AM.
TomTom is offline  
December 12th, 2015, 01:33 PM   #29
Senior Member
 
Joined: Sep 2007
From: ???

Posts: 774
Thanks: 277

I Ride:
Thanks very much guys for your help

Thanks Tom Tom, but don`t go drilling any pistons, you never know you might need them, and unless it had a dish of some sort would probably be of no use anyway. The Ducati Diaval piston looks to have a slight dish?


fdracing; I am going to be using a shorter stroke than 80mm, possibly around
the 70mm region all dependent on how the rest of the build up works out.
ie big bore short stroke + big valves, high RPM and around 670ccish

Just for something different to usual tractor like build

Custom order will probably be the answer. Pity Beryllium pistons never took off.
spanner is offline  
December 13th, 2015, 04:56 AM   #30
Senior Member
 
Joined: Nov 2012
From: Sweden

Posts: 401
Thanks: 304

I Ride: HB 570 FE
The Diavel piston is one funky piston, its the opposite of a dish with highest point in the middle, no idea why...
Thanks from spanner
TomTom is offline  
Reply

  Husaberg Forum > Mechanical and Technical > Mechanical

Tags
1198, cylinder



Thread Tools
Display Modes


Similar Threads
Thread Thread Starter Forum Replies Last Post
96 fc 600 cylinder ragrobb Mechanical 0 October 29th, 2011 09:39 AM
cylinder head spiney Mechanical 6 September 6th, 2008 11:17 PM
cylinder relining mars Mechanical 9 July 9th, 2007 04:23 AM
cylinder i96rcr Mechanical 1 February 27th, 2007 09:18 PM
Cylinder Mika Mechanical 2 August 15th, 2005 01:56 PM


Facebook Twitter Google+ RSS Feed