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Re: Define: huge increase in power
Posted: Thu Oct 02, 2025 12:29 pm
by Horse
Mr Moofo wrote: Thu Oct 02, 2025 11:50 am
The odd thing about all these power gains, is that most of us never, ever use anything like the full potential BHP of the bikes we have.
And for the real world I would have thought concentration on low down torque would be the only thin most people could "feel"
The guy who served my bikes always balanced the injectors for part throttle / midrange as that's where most riders spend most of their time.
Re: Define: huge increase in power
Posted: Thu Oct 02, 2025 12:43 pm
by Yorick
I've got 202 gee gees, but would happily accept another 30 at Portimao next week
That would be fun down the long straight
Re: Define: huge increase in power
Posted: Thu Oct 02, 2025 1:28 pm
by Taipan
..... wrote: Wed Oct 01, 2025 9:14 pm
I was reading some blurb from a tuner about what they'd done to a bike (akra, air filter and ecu flash)
So after spunking the best part of a grand on bits, anyone care to guess what % or hp gain they received, described by tuner as a 'huge increase in power'
I know that my bike, with the older version of the same engine actually dyno'd slightly higher with pipe, filter, airbox mod and flash, and allegedly, has a lower initial output, so a bigger gain (i only paid for the flash and air filter)
5% gain overall. But generally speaking it isn't about power gain its about power delivery, smooth with no dips.
Re: Define: huge increase in power
Posted: Thu Oct 02, 2025 3:07 pm
by gremlin
Has nobody looked to find out what colour the power band was yet?
Re: Define: huge increase in power
Posted: Thu Oct 02, 2025 3:20 pm
by Ditchfinder
Just to expand on this what would you good people define as a noticable reduction in weight?
EG. On the Himmy quoted wet weight is 199kg - I think I've dropped around 10kg with removing racks, lighter exhaust and a lighter battery and a few bits and bobs.
So Power to weight was 24/199 = 0.12 and is now 24/189=0.125 ~ 5% improvement in Power to weight.
Completely unnoticeable to the arse dyno - it's just easier getting it in and out of the shed.
Re: Define: huge increase in power
Posted: Thu Oct 02, 2025 6:11 pm
by The Spin Doctor
Mr Moofo wrote: Thu Oct 02, 2025 11:50 am
The odd thing about all these power gains, is that most of us never, ever use anything like the full potential BHP of the bikes we have.
And for the real world I would have thought concentration on low down torque would be the only thin most people could "feel"
I've been explaining this for decades
Re: Define: huge increase in power
Posted: Thu Oct 02, 2025 7:08 pm
by .....
OK, this tuning house claim 3.5% (4.6hp) as a huge increase.
Yes I know its about the overall driveability and throttle response, but nobody(except maybe HD owners) gets excited by the driveability on a dyno sheet
If I'd have spunked a grand for 5hp and better driveability, I'd be quite disappointed.
Re: Define: huge increase in power
Posted: Thu Oct 02, 2025 10:37 pm
by Ditchfinder
If you need to spend a grand for 5hp increase you might have bought the wrong bike to begin with....
Re: Define: huge increase in power
Posted: Fri Oct 03, 2025 8:14 am
by Count Steer
Ditchfinder wrote: Thu Oct 02, 2025 3:20 pm
Just to expand on this what would you good people define as a noticable reduction in weight?
EG. On the Himmy quoted wet weight is 199kg - I think I've dropped around 10kg with removing racks, lighter exhaust and a lighter battery and a few bits and bobs.
So Power to weight was 24/199 = 0.12 and is now 24/189=0.125 ~ 5% improvement in Power to weight.
Completely unnoticeable to the arse dyno - it's just easier getting it in and out of the shed.
Arse dyno.
(Probably the one that matters most).
Re: Define: huge increase in power
Posted: Fri Oct 03, 2025 8:58 am
by Horse
Ditchfinder wrote: Thu Oct 02, 2025 3:20 pm
Completely unnoticeable to the arse dyno - it's just easier getting it in and out of the shed.
No idea 'why', but the R850RT (238kg) felt a hell of of a lot easier to move than the K100RT (253kg).
Re: Define: huge increase in power
Posted: Fri Oct 03, 2025 9:01 am
by Count Steer
Horse wrote: Fri Oct 03, 2025 8:58 am
Ditchfinder wrote: Thu Oct 02, 2025 3:20 pm
Completely unnoticeable to the arse dyno - it's just easier getting it in and out of the shed.
No idea 'why', but the R850RT (238kg) felt a hell of of a lot is to move than the K100RT (253kg).
Those older K's carried a lot of the weight quite low down cf 'traditional' layouts didn't they?
(Not that it made my K12LT any easier to shuffle about
).
Re: Define: huge increase in power
Posted: Fri Oct 03, 2025 5:32 pm
by A_morti
Tricky wrote: Thu Oct 02, 2025 9:09 am
It's definitely not an FZ1, as they had carbs
2006-15 fz1 was fuel injected, but I'll admit I didn't realise the gen1 was still with carbs.
Re: Define: huge increase in power
Posted: Fri Oct 03, 2025 5:35 pm
by A_morti
Horse wrote: Fri Oct 03, 2025 8:58 am
Ditchfinder wrote: Thu Oct 02, 2025 3:20 pm
Completely unnoticeable to the arse dyno - it's just easier getting it in and out of the shed.
No idea 'why', but the R850RT (238kg) felt a hell of of a lot easier to move than the K100RT (253kg).
My fz6 rolled around easier than my cbr250, despite being some 50kg heavier. It had me scratching my head, checking tyre pressures and brakes... I think in the end it was just about the higher wider handlebars.
Re: Define: huge increase in power
Posted: Fri Oct 03, 2025 6:52 pm
by Le_Fromage_Grande
Ditchfinder wrote: Thu Oct 02, 2025 3:20 pm
Just to expand on this what would you good people define as a noticable reduction in weight?
EG. On the Himmy quoted wet weight is 199kg - I think I've dropped around 10kg with removing racks, lighter exhaust and a lighter battery and a few bits and bobs.
So Power to weight was 24/199 = 0.12 and is now 24/189=0.125 ~ 5% improvement in Power to weight.
Completely unnoticeable to the arse dyno - it's just easier getting it in and out of the shed.
199kgs !!!!! that's only 13 less than my 143bhp CB1000R, which rarely gets all 143 going through the back tyre because it's stupidly fast
Re: Define: huge increase in power
Posted: Fri Oct 03, 2025 7:23 pm
by Horse
A_morti wrote: Fri Oct 03, 2025 5:35 pm
Horse wrote: Fri Oct 03, 2025 8:58 am
Ditchfinder wrote: Thu Oct 02, 2025 3:20 pm
Completely unnoticeable to the arse dyno - it's just easier getting it in and out of the shed.
No idea 'why', but the R850RT (238kg) felt a hell of of a lot easier to move than the K100RT (253kg).
I think in the end it was just about the higher wider handlebars.
Both RTs
Re: Define: huge increase in power
Posted: Fri Oct 03, 2025 11:47 pm
by Ditchfinder
Fuel injection + ABS = lardy
Now I wouldn't mind this if it was fueled nicely and the brakes were good...
Re: Define: huge increase in power
Posted: Sat Oct 04, 2025 8:07 am
by KungFooBob
Ditchfinder wrote: Fri Oct 03, 2025 11:47 pm
Fuel injection + ABS = lardy
Now I wouldn't mind this if it was fueled nicely and the brakes were good...
Don't forget exhaust catalysers.
Re: Define: huge increase in power
Posted: Sat Oct 04, 2025 8:36 am
by Ditchfinder
KungFooBob wrote: Sat Oct 04, 2025 8:07 am
Ditchfinder wrote: Fri Oct 03, 2025 11:47 pm
Fuel injection + ABS = lardy
Now I wouldn't mind this if it was fueled nicely and the brakes were good...
Don't forget exhaust catalysers.
Mine has a decat pipe now. Saved about 2kg
Re: Define: huge increase in power
Posted: Sat Oct 04, 2025 9:22 am
by Le_Fromage_Grande
Ditchfinder wrote: Fri Oct 03, 2025 11:47 pm
Fuel injection + ABS = lardy
Now I wouldn't mind this if it was fueled nicely and the brakes were good...
Should've bought a nice Japanese inline 4
Re: Define: huge increase in power
Posted: Sat Oct 04, 2025 10:29 am
by mangocrazy
Ditchfinder wrote: Sat Oct 04, 2025 8:36 am
KungFooBob wrote: Sat Oct 04, 2025 8:07 am
Ditchfinder wrote: Fri Oct 03, 2025 11:47 pm
Fuel injection + ABS = lardy
Now I wouldn't mind this if it was fueled nicely and the brakes were good...
Don't forget exhaust catalysers.
Mine has a decat pipe now. Saved about 2kg
When I replaced the plug ugly and obtrusive cat on the Duke 690 with a decat pipe I must have saved nearly 5kg. That thing weighed a ton. It also made oil changes a nightmare, as the oil had nowhere to go except all over the cat. Horrible piece of design. Replacing it with a link pipe was worth it just for the maintenance aspect.