Thumper Racing 610 kit.

Husaberg

Help Support Husaberg:

This site may earn a commission from merchant affiliate links, including eBay, Amazon, and others.
Ha ha yeah stuff happens :D

Thanks for the encouragement having the poor dyno result and the bike coming out of the back of the ute in one day is almost too much to handle, thank heavens for sweet sweet beer. :bounce3:
 
Well I spent 3.5 hours reading up on the theories of dynamometers..... 8O
Looks like I am loosing faith in the repeatabillity of these things especially when so many variables can influence results even back to back runs, things like tyre slip, load ramps, correction factors, windage, final drive ratios, selected gear, inputs into the dyno software, drum weight discrepancies, power losses through tranmission systems , , operating temperatures of said systems and on and on and on and......:roll:

So huasBELG, if you're still interested In the differences a TB makes I will be going back in the new year and creating a new base line and swapping to the 44mm TB in the same hour. :lol:
 
Great :D
I'm plannig to get work done on mine by the end of februari beginning of march at last so I can wait and see here :lol:
 
You can see in your A/F ratio that the 44mm body flows more air - the whole green line moved up across the board. You may also be seeing the flow limits of the cam or the head, either of which would hold things back. Time to make adjustments to the fuel mapping IMO, atleast I would start there first.

I use the same dyno guy, dynojet dyno and the results are pretty consistent when I have gone back on different days.
 
I would like to have made some adjustments but the discrepancy between the 2 runs was just too large and without laying down a known reliable baseline I might get myself into all sorts of trouble and become lost.

I used the same dyno and operator But the two curves represent an almost 11 month gap, had the discrepancy been 1-2 hp then we would have pressed on with tuning the bugger.

We are also using a dyno dynamics unit which as I'm led to believe, depends more on operator set up than a dynojet.

Thanks for your input anyhow TM When my berg grows up I want it to be just like yours :cheers:
 
berglsmerg said:
Same dyno same atmospheric conditions bigger throttle body = net loss of 4 hp
Click to expand...

Thanks for the hard work and shareing the knowledge. I'll buy a cam first :D . I was just about to bore my TB. I have a current 4hp loss too! I have spent days on the dyno I use with other bikes. It is real consistent. Quit counting the hours off dyno time on my 990 at 18. The berg has three trips. Always dyno with the same street tire on all my bikes. Base on my bike was 49hp and the dyno is at 5k elevation. Each of my first two dyno trips the last pulls were done with the seat off. Always a 3.5hp gain. I did the whole in the seat mod then borrowed a User tool to add fuel. Couldn't get on the dyno at the same time I had the tool so I winged it and added fuel. Previous runs the A/F was 13.0 to 13.6 with the seat off. Now I'm back to 49 hp and 12.4 A/F. I usually shoot for 12.8 but it seems like these bikes like it a little leaner. Considering I'm an old fart who can't hold it wide open vary long I might lean it out. Never fear mate! The HP will come back. Unforetunately you have to spend more $$$ to get it.
 
tahoeacr said:
berglsmerg said:
Same dyno same atmospheric conditions bigger throttle body = net loss of 4 hp
Click to expand...

Thanks for the hard work and shareing the knowledge. I'll buy a cam first :D . I was just about to bore my TB. I have a current 4hp loss too! I have spent days on the dyno I use with other bikes. It is real consistent. Quit counting the hours off dyno time on my 990 at 18. The berg has three trips. Always dyno with the same street tire on all my bikes. Base on my bike was 49hp and the dyno is at 5k elevation. Each of my first two dyno trips the last pulls were done with the seat off. Always a 3.5hp gain. I did the whole in the seat mod then borrowed a User tool to add fuel. Couldn't get on the dyno at the same time I had the tool so I winged it and added fuel. Previous runs the A/F was 13.0 to 13.6 with the seat off. Now I'm back to 49 hp and 12.4 A/F. I usually shoot for 12.8 but it seems like these bikes like it a little leaner. Considering I'm an old fart who can't hold it wide open vary long I might lean it out. Never fear mate! The HP will come back. Unforetunately you have to spend more $$$ to get it.
Click to expand...

Geez Husaberg throttle body borers world wide must be hating me right now. 8)

Hey no probs sharing the info mate, I know that a dickie bird in the hand is worth two in the bush :lol:

I'm investigating cam choices at the minute, I'll procure one before I head back to the dyno. I was at the local Christmas fair last night and saw some old Aussie muscle cars, really well presented machines with all the go fast gear. I caught myself thinking, "Geez, look at those money pits" :lol: Thanks for the encouragement :cheers:
 
tahoeacr said:
berglsmerg said:
Same dyno same atmospheric conditions bigger throttle body = net loss of 4 hp
Click to expand...

Thanks for the hard work and shareing the knowledge. I'll buy a cam first :D . I was just about to bore my TB. I have a current 4hp loss too! I have spent days on the dyno I use with other bikes. It is real consistent. Quit counting the hours off dyno time on my 990 at 18. The berg has three trips. Always dyno with the same street tire on all my bikes. Base on my bike was 49hp and the dyno is at 5k elevation. Each of my first two dyno trips the last pulls were done with the seat off. Always a 3.5hp gain. I did the whole in the seat mod then borrowed a User tool to add fuel. Couldn't get on the dyno at the same time I had the tool so I winged it and added fuel. Previous runs the A/F was 13.0 to 13.6 with the seat off. Now I'm back to 49 hp and 12.4 A/F. I usually shoot for 12.8 but it seems like these bikes like it a little leaner. Considering I'm an old fart who can't hold it wide open vary long I might lean it out. Never fear mate! The HP will come back. Unforetunately you have to spend more $$$ to get it.
Click to expand...
So you're bike went on dyno 3 times without chainging anything except a/f settings and now 4hp loss?
Or where did it came from???
 
HusaBELGfs570 said:
tahoeacr said:
berglsmerg said:
Same dyno same atmospheric conditions bigger throttle body = net loss of 4 hp
Click to expand...

Thanks for the hard work and shareing the knowledge. I'll buy a cam first :D . I was just about to bore my TB. I have a current 4hp loss too! I have spent days on the dyno I use with other bikes. It is real consistent. Quit counting the hours off dyno time on my 990 at 18. The berg has three trips. Always dyno with the same street tire on all my bikes. Base on my bike was 49hp and the dyno is at 5k elevation. Each of my first two dyno trips the last pulls were done with the seat off. Always a 3.5hp gain. I did the whole in the seat mod then borrowed a User tool to add fuel. Couldn't get on the dyno at the same time I had the tool so I winged it and added fuel. Previous runs the A/F was 13.0 to 13.6 with the seat off. Now I'm back to 49 hp and 12.4 A/F. I usually shoot for 12.8 but it seems like these bikes like it a little leaner. Considering I'm an old fart who can't hold it wide open vary long I might lean it out. Never fear mate! The HP will come back. Unforetunately you have to spend more $$$ to get it.
Click to expand...
So you're bike went on dyno 3 times without chainging anything except a/f settings and now 4hp loss?
Or where did it came from???
Click to expand...


No. Tested different mufflers, air filters and mapping. Usually when I go I rent the dyno for two hours and test multiple bikes. The last time I was there was for testing headers on my 990. I went off to change the venturi in my merge collector and had the dyno operator run the Berg.
IMG_0636.jpg
 
berglsmerg said:
[ I was at the local Christmas fair last night and saw some old Aussie muscle cars, really well presented machines with all the go fast gear. I caught myself thinking, "Geez, look at those money pits" :lol: Thanks for the encouragement :cheers:
Click to expand...
No stranger to looking at money pits. Working on this Ferrari Challenge team. Frigin 10K for a single brake disc 8O. They told me they throw those carbon discs away when they get to thin. I think I need one for something.
P7190009.jpg
 
Have been kinda lazy lately, but now I'm trying to really do something before time is running out.

Made this engine stand few days ago, will start tearing the motor by weekend:
motuur2-resize1.jpg


motuur1-resize.jpg


That 46mm sure looks nice. 8)
 
damn that's nice 8)
Look at that TB bling :D
I am curious about your bike contiman get it on the dyno! :mrgreen:
I wil get some (light compared to you guys :mrgreen: ) tuning done on mine in march :)
 
HusaBELGfs570 said:
damn that's nice 8)
Look at that TB bling :D
I am curious about your bike contiman get it on the dyno! :mrgreen:
I wil get some (light compared to you guys :mrgreen: ) tuning done on mine in march :)
Click to expand...

My bike passed at dyno 3 months ago

News mods to come...
 
I'm realy not convinced about boring the stock TB out.
I will get my head flowed for sure by bergos but realy doubt the TB wil do any good effect/ bang for the buck .
I will not realy know the difference it makes because I've done way to much at once without going to a dyno for every modification.
Only been on the dyno with stock airfilter stock headers stock engine only mods where fmf pipe and cut rad shrouds.
Now I'l get:
-dna air filter
-FMF megabomb header
-Optimised cyl head
-TB maybe or not????

Getting the bike custom mapped costs as much as the TB mod maybe that's a better plan :idea:
All of this stuff is realy all I want to do getting it mapped+tb is over my budget actualy :roll:

My bike made 56hp/nm hope to hit 60/60 :mrgreen:
 
Not worth doing those mods without mapping. I started to run way lean when I added the FMF megabomb header, and I lost some throttle response down low. I''m not too keen on the UST tool that I had. Sure you can get the injection in the right direction, but without the ability to map timing there is alot to be gained more.

Ever tried the timing map switch? Run it in mildest mode, and the bikes power output feels like tractor. Good for the enduro guys, but on pavement with 17's it's a whole different world.

Why Bergos head? Local to you or no other places? I'm sure there are other reputable engine builders who can do the head. Mine is getting to my tuner on this week along with tb and CP 13.5:1 piston, so he gets the idea what to do with the head.

Anyone ran oversize valves on these heads? Intake looks big enough, but exhaust might like +1mm or +2mm.
Intakes are titanium and exhausts stainless?
 
Yes I do'nt know any other alternatives around here and heard good things about bergos from other hsb570 riders here and my dealer also recommended bergos to do the work on my berg...

I do'n know exactly what the dyno guy does/uses ust tool something else :?: but it better be good for 300€ to get it custom mapped :mrgreen:

The h/c piston how much are you planning to use it (hours for replacing etc) the hsb manual says for (stock) piston 45hours race use 90 hours "amateur" use I already have 160 hours out of the 1st piston :mrgreen:
And dou you use stock head gasket with this piston or a thinner paper one for more compression?
I'm planning to keep my piston for 200+hours will check/decide it in a couple of hours when the head comes of.
Grtz
 
maKe said:
Not worth doing those mods without mapping. I started to run way lean when I added the FMF megabomb header, and I lost some throttle response down low. I''m not too keen on the UST tool that I had. Sure you can get the injection in the right direction, but without the ability to map timing there is alot to be gained more.

Ever tried the timing map switch? Run it in mildest mode, and the bikes power output feels like tractor. Good for the enduro guys, but on pavement with 17's it's a whole different world.

Why Bergos head? Local to you or no other places? I'm sure there are other reputable engine builders who can do the head. Mine is getting to my tuner on this week along with tb and CP 13.5:1 piston, so he gets the idea what to do with the head.

Anyone ran oversize valves on these heads? Intake looks big enough, but exhaust might like +1mm or +2mm.
Intakes are titanium and exhausts stainless?
Click to expand...

If I remember correctly the options for oversize valves on the stock cylinder are limited by the physical dimensions and position of the valve, I remember having to strip all the valves to deck the head surface. I am having trouble remembering but I think all 4 valves are Del West ti.
 

Similar threads

S
Steve's 2007 Husaberg FE650E aka Big Berg
Replies
3
Views
165
anthonys4691
A
thorgan
2001 FE501
Replies
0
Views
45
thorgan
thorgan
S
Steve's 1998 FE501 Husaberg
Replies
1
Views
154
maxxx56
maxxx56
K
AM fuel pump parts sourcing problems
Replies
1
Views
1K
o6550
o6550
J
Dyno Chart for '99 FE501 with FCR41
2
Replies
22
Views
3K
Taffy
Taffy

Register CTA

Register on Husaberg Forum! This sidebar will go away, and you will see fewer ads.

Recent Discussions

Recent Discussions

Back
Top