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Jack up kit versus dropping the forks. - Printable Version

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+--- Thread: Jack up kit versus dropping the forks. (/showthread.php?tid=78738)

Pages: 1 2

Re: Jack up kit versus dropping the forks. - 5LV - 07-09-17

(06-09-17, 04:04 PM)Dudeofrude link Wrote: [quote author=5LV link=topic=23203.msg267535#msg267535 date=1504690018]
there's a good reason why firms like k tech, maxton are in business.

Theres a good reason companies like Yamaha are in business. Afterall they put the stock shock in there in the first place. They spend hundreds of thousands in R&D and have teams of specialists design and set up a motorbike to work exactly as it should.
Then the average joe whos buys it decides it's not good enough and changes parts out for something they deem to be 'better'
[/quote]

the reason maxton et al are in business are because firms like yamaha get it wrong so often. why else would they sell a fazer with a spring rate set for 10st.
dynojet had a record year in 2006/7 sorting out the fz1 fuelling.
would you like some savlon for those burns

Re: Jack up kit versus dropping the forks. - Dudeofrude - 07-09-17

(07-09-17, 08:07 AM)5LV link Wrote: [quote author=Dudeofrude link=topic=23203.msg267559#msg267559 date=1504710274]
[quote author=5LV link=topic=23203.msg267535#msg267535 date=1504690018]
there's a good reason why firms like k tech, maxton are in business.

Theres a good reason companies like Yamaha are in business. Afterall they put the stock shock in there in the first place. They spend hundreds of thousands in R&D and have teams of specialists design and set up a motorbike to work exactly as it should.
Then the average joe whos buys it decides it's not good enough and changes parts out for something they deem to be 'better'
[/quote]

the reason maxton et al are in business are because firms like yamaha get it wrong so often. why else would they sell a fazer with a spring rate set for 10st.
dynojet had a record year in 2006/7 sorting out the fz1 fuelling.
would you like some savlon for those burns
[/quote]

Maybe because the vast majority of Yamaha customers around the world aren't all fat bastards like us in the UK haha and while I'll agree that they royally fucked up in 2006 with the Fazer fuelling they sorted it out by 2008 negating the need for dynojet to do anything unless people start messing with the bike again.
Look I'm on your side in all this, my bike is more heavily modified than most but I still stand by the fact that if you left the bike completely stock it would run/ride better than 90% of people could actually ride it. The problems only start when people do 'mods' for the sake of doing mods

A prime example being swapping the exhaust out for something louder/prettier which straight away messes with the fuelling which then leads on to buying a power commander then a remap and changing air filters etc etc.... where as if ya left the pipe alone the bike wouldnt have sounded as cool but would have been running fine

Re: Jack up kit versus dropping the forks. - tommyardin - 07-09-17

(05-09-17, 11:01 AM)Dudeofrude link Wrote: I'm considering doing this too but mainly just because my seat is too low. I can flat foot with both feet and even stand up off the seat slightly. Didn't really think about the handling differences it might make ?


FFS Dudeo how tall are you? Flat foot both sides and still manage arse off seat.
I'm 5' 9.5" and can almost stand up under the centre stand.  :rollin

Re: Jack up kit versus dropping the forks. - Dudeofrude - 07-09-17

(07-09-17, 09:04 AM)tommyardin link Wrote: [quote author=Dudeofrude link=topic=23203.msg267445#msg267445 date=1504605714]
I'm considering doing this too but mainly just because my seat is too low. I can flat foot with both feet and even stand up off the seat slightly. Didn't really think about the handling differences it might make ?


FFS Dudeo how tall are you? Flat foot both sides and still manage arse off seat.
I'm 5' 9.5" and can almost stand up under the centre stand.  :rollin
[/quote]

Only 6' 2 but quite long legged haha

Re: Jack up kit versus dropping the forks. - NorthWestern - 28-09-17

I wrote an app for my phone for bike setup (geometry) that allows you to alter pretty much anything and see the effects visually and with compression graphs on the rear shock etc you can compress the suspension and see the links working...  if anyone can be bothered taking the measurements of the fazer it would give you the answers your looking for Smile

Re: Jack up kit versus dropping the forks. - NorthWestern - 28-09-17

You need to take measurements to describe the base bike

[Image: 36666849034_e97a640604_c.jpg]

Then you can make modifications using the modify panel, altering fork lengths, link lengths, swingarm pivot height, link positions etc (the grey bike represents the standard one)

[Image: 36666849134_bcbaf7ab19_c.jpg]

All works animated live...

[Image: 37328077536_24a853a4bb_c.jpg]




Re: Jack up kit versus dropping the forks. - Flooky - 06-10-17

I don't really understand the "makes the bike fit me " argument, it doesn't change the bar/seat/peg relationship, so its just sitting at a standstill that is different.
I would have thought that doesn't really matter. Am I missing something ?

Re: Jack up kit versus dropping the forks. - PieEater - 06-10-17

(06-10-17, 08:50 AM)Flooky link Wrote:I don't really understand the "makes the bike fit me " argument, it doesn't change the bar/seat/peg relationship, so its just sitting at a standstill that is different.
I would have thought that doesn't really matter. Am I missing something ?
As you say the riding position remains unchanged, but as the seat height is increased the bike looks and feels a better fit for taller riders even if the feel part is most evident at a standstill when you have your feet on the ground. Having said that the main benefit of a jack-up kit remains the improved handling.

Re: Jack up kit versus dropping the forks. - Flooky - 07-10-17

I know about the handling changes but the feel for a taller rider is a strange one, if your a midget or 8 ft tall jacking the bike will make no difference, you would both feel the same improvement / change of feel.
as far as looks go, if your on it , it makes no difference, only at a stand still will it make a difference and if your tall complete control over your bike cos it seems small is only a good thing.


Re: Jack up kit versus dropping the forks. - apage16 - 07-10-17

I was thinking of jacking up to increase ground clearance so i could put lower pegs on to give me more leg room without increasing the chances of scraping pegs. I was worried about upsetting the handling or increasing chances of head wobble. If all it does is improve handling then i might reconsider.

Re: Jack up kit versus dropping the forks. - PieEater - 07-10-17

(07-10-17, 09:59 PM)Flooky link Wrote:if your a midget or 8 ft tall jacking the bike will make no difference, you would both feel the same improvement / change of feel.

as far as looks go, if your on it , it makes no difference, only at a stand still will it make a difference and if your tall complete control over your bike cos it seems small is only a good thing.
As a taller / larger person I'm much happier with a taller bike, I look better when I'm sat on it, it fits me better when I'm sat on it, and that makes me feel happier owning and riding it. I recently had an unsolicited comment from a bike mechanic that I'd never met before who said my bike looked spot on for my size when I was stood by it and sat on it, contrast that with being told by my wife that she thought I looked silly sat on my fireblade as I was out of proportion with the bike.




Re: Jack up kit versus dropping the forks. - Dudeofrude - 08-10-17

(07-10-17, 11:33 PM)PieEater link Wrote:[quote author=Flooky link=topic=23203.msg269354#msg269354 date=1507409995]
if your a midget or 8 ft tall jacking the bike will make no difference, you would both feel the same improvement / change of feel.

as far as looks go, if your on it , it makes no difference, only at a stand still will it make a difference and if your tall complete control over your bike cos it seems small is only a good thing.
As a taller / larger person I'm much happier with a taller bike, I look better when I'm sat on it, it fits me better when I'm sat on it, and that makes me feel happier owning and riding it. I recently had an unsolicited comment from a bike mechanic that I'd never met before who said my bike looked spot on for my size when I was stood by it and sat on it, contrast that with being told by my wife that she thought I looked silly sat on my fireblade as I was out of proportion with the bike.
[/quote]

Yeah but to fair anyone over 5ft 5 looks silly on a fireblade haha or any modern sportsbike really. That's why I prefer older sportbikes. My old thundercat 600 was bigger than a modern litrebike.

Re: Jack up kit versus dropping the forks. - Flooky - 08-10-17

Actually thinking about it , when I had a big trail bike the feel is different and that's the same thing I spos,
maybe just a higher feel makes things different.

Re: Jack up kit versus dropping the forks. - F4celess - 12-10-17

(06-10-17, 08:50 AM)Flooky link Wrote:I don't really understand the "makes the bike fit me " argument, it doesn't change the bar/seat/peg relationship, so its just sitting at a standstill that is different.
I would have thought that doesn't really matter. Am I missing something ?

With my jacked up Fazer, my head is now above the roofline of cars... caravans... horse boxes too!  :lol Wink It's a win win.

I now use an old wooden bread cutting board (nice and solid), placed between the wheels, that I then raise the centre stand onto.
It gives me back those 3 or 4cm clearance, and my back wheel is in the air again. Wheel rotates freely for cleaning chain etc. Only do this for maintenance.

Leaving the Bike on the Side stand does now feel a little risky, as it leans over quite a bit. I wouldn't feel comfortable leaving it on side stand for long periods (overnight or while at work for the day). Obviously lengthening the side stand is the answer to this (as a lot do). The bike does still sit very securely on centre stand.