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+--- Thread: So I got her on the Dyno... (/showthread.php?tid=77476)
So I got her on the Dyno... - youngsterbiker - 24-02-17
So I "won" a free dyno power run... the bike is 17 years old... and i was hoping for a solid 85 bhp.... how wrong I was.. shes running 80.65 bhp... Not a bad number but would have liked to have seen better..
Now here's the problem, the air/fuel mixture seems to go mad at 5000 revs. The guy running the dyno has suggested a new air filter as a quick cheap fix. Poor guy had long queue so I did not ask more questions.
Can anybody think of anything that could help solve the problem?
Bike is a 2000 fzs 600, only change is aftermarket exhaust.
Cheers.
Re: So I got her on the Dyno... - unfazed - 24-02-17
K&N filter will sort it out :thumbup
Re: So I got her on the Dyno... - darrsi - 24-02-17
Had mine dyno'd a few times, although never with the current K&N air filter fitted.
There was always a discrepancy at mid range, but was always told aftermarket exhausts would never match the OEM one on a Fazer, and this fella really knows his stuff.
Rejetting never helped either, tried that and it never ran right at all.
It's a 17yr old bike, don't expect miracles, just enjoy what you've got.
Re: So I got her on the Dyno... - darrsi - 24-02-17
Moderators, you gotta sort out that miniscule texting thing, it happens a lot.
Don't even know why that happened?
Re: So I got her on the Dyno... - Bretty - 25-02-17
I thought the fazer was supposed to be 95bhp from new and assumed with a sports exhaust and k&n filter it would be touching 100.
Where do all the horses go?
Re: So I got her on the Dyno... - unfazed - 25-02-17
Fazer is rated at 95 Metric Hospower which is about 70Kw and 94 BHP
Dyno is at the rear wheel unless its converted to Crank. 10 to 15% would be the approximate losses between rank to rear wheel.
this would put 80 bhp at the lower end of the % rule
Re: So I got her on the Dyno... - Bretty - 25-02-17
So 95bhp (at the crank/flywheel)
and 80hp (at the wheel)
Re: So I got her on the Dyno... - darrsi - 25-02-17
This was 4 years ago, when i used to be able to run the 100m in 9.5secs.
Now i can run 9.5metres in 100secs. :lol
http://foc-u.co.uk/index.php/topic,6358.msg64999.html#msg64999
Re: So I got her on the Dyno... - darrsi - 25-02-17
As i said above
......................................................................
Re: So I got her on the Dyno... - slappy - 25-02-17
Different dyno, different conditions, even a different dyno operator can all have an effect on the bhp figure.
Re: So I got her on the Dyno... - kebab19 - 25-02-17
Dynos obviously vary considerably, but I read somewhere a long time ago that the FZS600 puts out between 79 and 83 @ the back wheel. If this is true, it sounds like your peak power is well within the normal range. The Thundercat only generates about 5 ponies more (until the ram-air effect kicks in) so unless you only want top-end power as the later R6s did, 80 ponies with an impressive midrange is very good for a 19 year old middleweight all rounder.
Re: So I got her on the Dyno... - darrsi - 25-02-17
(25-02-17, 11:34 AM)kebab19 link Wrote: Dynos obviously vary considerably, but I read somewhere a long time ago that the FZS600 puts out between 79 and 83 @ the back wheel. If this is true, it sounds like your peak power is well within the normal range. The Thundercat only generates about 5 ponies more (until the ram-air effect kicks in) so unless you only want top-end power as the later R6s did, 80 ponies with an impressive midrange is very good for a 19 year old middleweight all rounder.
Exactly, it is what it is, if you need or want more then get a bigger bike.
Re: So I got her on the Dyno... - matt7chunk - 25-02-17
hey youngster i was there lol colchester kawasaki i watched the run , i was there with my fazer
Re: So I got her on the Dyno... - Bretty - 25-02-17
Those curves are very interesting!
If you ignore the max torque and power figures and look at the extra torque/power you're getting at the lower revs (below 5,000rpm). It looks about 20% more! I'm not sure how much time i spend with my bike between 3,000 and 5,000rpm, but I should think that extra power would be quite noticeable around town and off the line.
Re: So I got her on the Dyno... - BBROWN1664 - 25-02-17
(24-02-17, 11:18 PM)darrsi link Wrote: Moderators, you gotta sort out that miniscule texting thing, it happens a lot.
Don't even know why that happened?
is it better now?
it only happens with a couple of users. Must be their browsers
Re: So I got her on the Dyno... - darrsi - 25-02-17
(25-02-17, 06:15 PM)BBROWN1664 link Wrote: [quote author=darrsi link=topic=21925.msg253596#msg253596 date=1487974723]
Moderators, you gotta sort out that miniscule texting thing, it happens a lot.
Don't even know why that happened?
is it better now?
it only happens with a couple of users. Must be their browsers
[/quote]
Yes, thank you :thumbup
Re: So I got her on the Dyno... - youngsterbiker - 25-02-17
Just as an update... i am in no way complaining about 80 bhp. its plenty enough to kill me. i need no more. its more the dip at 5k revs that is bugging me.
it accelerates fast then drops for a second till it picks up again.. thats what i want to fix
Re: So I got her on the Dyno... - daviee - 25-02-17
might need the carbs cleaned
Re: So I got her on the Dyno... - darrsi - 25-02-17
It's the exhaust that's causing it.