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Can you lower an F4i?

mrtnz

mär-'tE-(")nez
Joined
Apr 24, 2002
Location
South San Francisco
Moto(s)
'00 Kawasaki Ninja EX500, '08 Ducati Monster 695
Name
Vicky
I am short person, 5'2. Can I lower an F4i so that I am not too much on my toes? I heard it is not advisable to do so due to too little ground clearance and changes in the handling of the bike.

Thank you!
 
You can shave the seat a tad as well as slightly adjust the preload.

They also sell shorter dog bones to lower the bike as well.

Most people don't recommend lowering the bike further due to ground clearance.
 
I think it's actually longer dogbones that shorter the rear. You can also drop the rear accordingly. Shaving the seat is a good suggestion.

Why don't you just wear 6" stilletto's? Saxy....
 
You can easily lower the F4i with lowering links on the rear. These are readily available aftermarket items. Plus, you'd probably have to drop the front forks by about 3/4 of an inch to a full inch. It's really not that hard.

But, having said that, you are right. This will create a ground clearance issue with the bottom fairing as well as affecting the rider performance. My reply to that is:

1. Nobody sees the bottom of the fairing anyway. Just be careful when going over speedbumps, etc.

2. The changes in the rideability are not so drastic that you will not be able to get used to it.

I hope this helps.
 
just how far leaned over will a simple lowering of the front get you in trouble though? that's one of the first things many do to quicken up the steering is raise the forks. I think if your heart is set on the F4i and will cut the seat pad down, then you can also drop the bike front and rear "a bit" without too much concern. what's the safe limit is the question. maybe get someone's bike and lean it over static to get an idea. allow for the bike compressed on the suspension for worst case scenario.

don't slow down for speedbumps, just get up on the pegs and power over them :twofinger no worries scraping there!

on trackdays bump it back up. there'll be plenty of umbrella and pit boys to assist take off/dismounts! :teeth
 
Why do you need to lower it? Why not just use one leg on the ground as almost all experience riders do?
 
Hey Vicky

I would pm Lance Keigwin and ask him about this. His wife (Linda) is hecka tiny too and she rides an R6 - I know - not an F4i - but still the bike has been lowered to accomodate her. He has a wealth of experience in this field :)

Holeshot, I dunno about Vicky, but for me the 'one legged' approach to holding a bike up is not acceptable, has a negative impact on the confidence level.

W
 
Vicky - DON'T do it... Shaving the seat is cool... but, I don't think it's such a great idea to lower it.

If I remember correctly, DA told me how one of her friends, lowered her F4, took it to the track and bottom'd out.
 
I've heard too many people bitch and moan about ground clearance problems when it comes to F4i's... lowering it further could be a real bummer.

Like Gixersin said, why not get one of the 400's? They're around... a VFR400 was on ebay not too long ago, and you can find the RVF400's around. Frickin trick bike :thumbup
 
Don't Lower

Hi Vicki, Ed L. here, I met you and Aries at the CBR “Mario Meet”. Sorry that this post is so long, but, I thought I’d tell you my story in case it helps. I’m, at most 5’5” with boots on. I’ve ridden motorcycles for about 13 years most of that time on a fairly short GB 500. Though I’d take that bike up to 9 once in awhile and enjoy the twisties, most of those years were made up of commuting around San Francisco and down the Peninsula. So, straight up, not much lean angle riding was my main type of riding. About a year and a half ago, my poor old GB was thrashed and I needed something new and had wanted to see what a higher performance bike could do, so I got an F4i. It seemed pretty tall, almost 2 inches taller than my old bike. I took the bike out and rode twisties and was amazed at the performance compared to my old bike—it felt great, I could lean it over so much more, power, handling etc. I felt like a total dork having not bought a better performing bike all those years when affordability was no problem.

However, I wanted confidence riding and commuting on the street –because that was my main type of riding - (coming up to stops, super slow right hand turns and for the hills in SF). So when I heard I could lower it (2 inches in my case), I did so right away, like, within a few weeks of getting the bike. I did this against the advice of more experienced riders and racer friends, but the bike felt good around the City and I could easily get my feet down.

Then, I went on a few rides with fairly fast riders in the twisties on this lowered F4i and found that the clearance was a big issue. I would barely lean it and the lack of room for ground clearance would suddenly become dangerously noticeable. Since the front was lowered the front wheel turned quickly enough, but the lowering sets your swingarm at a different angle, so the rear always felt too “squatted down”. It felt as if the rear suspension was topped out all the time in the corners. It made the bike hard to turn mid way and through the exit of a turn. Yes, I know about counter-steering, blah blah blah, but I know that a bike also “steers” or progresses through a corner with body position and with the rear wheel.

Later, I wanted to check out faster riding on a track, so I took the Keith Code levels I and II, on their Kawi. I was back on a taller bike with more ground clearance. It was so much easier to get around the corners, if only because I wasn’t worried about scraping side covers at the slightest angle, hahaha. I realized the lowered bike was not performing well and was actually dangerous, plus I knew I wanted to do more riding on the track so I put the bike back up to regular height. (In fact, currently, with an aftermarket shock, it’s a little taller than stock height.)

With all honesty, after a month of the stock height bike I was totally comfortable one legging it at stop lights etc. Conclusion: it just took a little time to get used to a new, slightly taller bike. Like others, I’d recommend cutting out some of the seat foam instead of physically lowering the bike. Also, rather than lowering the bike, it would probably be best to just take your time, find places where you could practice coming to a stop, or slight hills or whatever you might think needs work. Balance and being comfortable on the bike is key.

Lowering the bike is fine if you will only commute or do city riding on the bike or are not that interested in checking out more of its potential on a track. If you still can’t do without the lowered bike, then, try to get an adjustable dogbone, one that can lower OR raise the height and buy an extra side stand for the various applications (side stand has to be cut and re-welded once you lower, otherwise the lowered bike is not stable with the side stand down).

Ed
:)
 
Thank you to everyone who responded! Some great advice you folks gave me! I will have to print this thread out! THANK YOU VERY MUCH!
 
just my .02

  1. Shave the seat 1st and see how that feels
  2. Get those Daytona boots for additional height for street riding. Just use your Sidi for track then or when your on your 250R.
  3. Combining 1 or 2, as Claire said @ Motolavita and as I said, start practicing on your 250R on staying on 1 leg (as Holeshot said above). Just as MSF, I don't recall them teaching staying on both legs all the time when not moving. By practicing staying on 1 leg, you get into that habit and when you get your F4i, it's a matter of finding that balance point.
  4. If all the agove don't work, maybe lower the front (more like raising the forks, aka lowering the triple tree)). Handling will change (quicker steering), but "potential" clearance issues arises when both leaning or hitting bumps on a straight.
    [/list=1]

    Why not try steps 1-3 first before plunging in money for dog bones, or suspension work by Aftershocks?
 
Re: Don't Lower

:thumbup! Awesome analysis/post Ed.

Ed L. said:
Hi Vicki, Ed L. here, I met you and Aries at the CBR “Mario Meet”. Sorry that this post is so long, but, I thought I’d tell you my story in case it helps. I’m, at most 5’5” with boots on. I’ve ridden motorcycles for about 13 years most of that time on a fairly short GB 500. Though I’d take that bike up to 9 once in awhile and enjoy the twisties, most of those years were made up of commuting around San Francisco and down the Peninsula. So, straight up, not much lean angle riding was my main type of riding. About a year and a half ago, my poor old GB was thrashed and I needed something new and had wanted to see what a higher performance bike could do, so I got an F4i. It seemed pretty tall, almost 2 inches taller than my old bike. I took the bike out and rode twisties and was amazed at the performance compared to my old bike—it felt great, I could lean it over so much more, power, handling etc. I felt like a total dork having not bought a better performing bike all those years when affordability was no problem.

However, I wanted confidence riding and commuting on the street –because that was my main type of riding - (coming up to stops, super slow right hand turns and for the hills in SF). So when I heard I could lower it (2 inches in my case), I did so right away, like, within a few weeks of getting the bike. I did this against the advice of more experienced riders and racer friends, but the bike felt good around the City and I could easily get my feet down.

Then, I went on a few rides with fairly fast riders in the twisties on this lowered F4i and found that the clearance was a big issue. I would barely lean it and the lack of room for ground clearance would suddenly become dangerously noticeable. Since the front was lowered the front wheel turned quickly enough, but the lowering sets your swingarm at a different angle, so the rear always felt too “squatted down”. It felt as if the rear suspension was topped out all the time in the corners. It made the bike hard to turn mid way and through the exit of a turn. Yes, I know about counter-steering, blah blah blah, but I know that a bike also “steers” or progresses through a corner with body position and with the rear wheel.

Later, I wanted to check out faster riding on a track, so I took the Keith Code levels I and II, on their Kawi. I was back on a taller bike with more ground clearance. It was so much easier to get around the corners, if only because I wasn’t worried about scraping side covers at the slightest angle, hahaha. I realized the lowered bike was not performing well and was actually dangerous, plus I knew I wanted to do more riding on the track so I put the bike back up to regular height. (In fact, currently, with an aftermarket shock, it’s a little taller than stock height.)

With all honesty, after a month of the stock height bike I was totally comfortable one legging it at stop lights etc. Conclusion: it just took a little time to get used to a new, slightly taller bike. Like others, I’d recommend cutting out some of the seat foam instead of physically lowering the bike. Also, rather than lowering the bike, it would probably be best to just take your time, find places where you could practice coming to a stop, or slight hills or whatever you might think needs work. Balance and being comfortable on the bike is key.

Lowering the bike is fine if you will only commute or do city riding on the bike or are not that interested in checking out more of its potential on a track. If you still can’t do without the lowered bike, then, try to get an adjustable dogbone, one that can lower OR raise the height and buy an extra side stand for the various applications (side stand has to be cut and re-welded once you lower, otherwise the lowered bike is not stable with the side stand down).

Ed
:)
 
morthrane said:
Like Gixersin said, why not get one of the 400's? They're around... a VFR400 was on ebay not too long ago, and you can find the RVF400's around. Frickin trick bike :thumbup

There's still that NSR (or RVF) Playstation replica @ Mission Honda/Kawi/Yamaha. :teeth

Only costs 8K plus change. ;)
 
I don't recommend lowering it, but I don't recommend shaving the seat either! It is already as hard as wood to begin with.

Just get used to sliding to one side and using one foot.
 
yeah, I agree with Faz. What's wrong with one foot? I've done it for years.
 
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