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General => Roadcraft => Topic started by: TBR125 on May 03, 2020, 07:43:24 PM

Title: How to Increase Corner Ground Clearance?
Post by: TBR125 on May 03, 2020, 07:43:24 PM
I ride most curves in this area with a late apex for maximum visibility. A problem I have run into (figuratively speaking) is that when I dive into a turn I scrape hard parts when my suspension compresses. I removed the center stand but am still catching the muffler and the CVT case.

Question: What braking/throttle technique could I use to make the bike stand on the suspension? Would throttling on while trailing the front brake help?

Thanks in advance for any feedback beneficial or not.
Title: Re: How to Increase Corner Ground Clearance?
Post by: CROSSBOLT on May 04, 2020, 12:10:54 AM
Get Klaviator talking about that! He is the resident corner man. His pictures show him heeled over like sloop on a broad reach or whatever! He personnally k ows every sharp corner in the three states of Alabama, Tennessee, West Virginia, Virginia, North and South Carolina and probably Mississippi!
Title: Re: How to Increase Corner Ground Clearance?
Post by: TBR125 on May 04, 2020, 03:44:11 AM
Thanks for the info. I am not a corner speed daredevil but am chasing perfection for the purpose of an increased safety margin.
Title: Re: How to Increase Corner Ground Clearance?
Post by: Neil955i on May 04, 2020, 11:37:14 AM
Get the braking out the way before the curve, braking in a bend upsets the steering geometry!  Go in on a neutral throttle getting ready to gas it on the way out i.e. after you've seen the vanishing point.  To quote the TT Legend Mike "the Bike" Hailwood, "slow in, fast out" is the secret!
Title: Re: How to Increase Corner Ground Clearance?
Post by: TBR125 on May 04, 2020, 01:19:21 PM
I understand that concept but for 125 Mopediah there is no fast out:) 54 second 0-60. Thanks though.
Title: Re: How to Increase Corner Ground Clearance?
Post by: Iahawk on May 04, 2020, 02:11:08 PM
the goal when cornering on a bike is to ideally keep it as vertical as possible.  Motojitsu talks a lot about this on his youtube channel. Best cornering is done with bike more vertical and the rider shifting body weight to the inside. You maintain the best traction and suspension movement this way.

With the hard parts fixed in position on the scoots I think your options are to corner slower, with less lean, or to practice body positioning to help the scoot stay more upright through the corners.

Must be a little disconcerting to scrape things while cornering on the scoot! Be safe out there.
Title: Re: How to Increase Corner Ground Clearance?
Post by: TBR125 on May 04, 2020, 02:48:07 PM
My limit to body positioning for weighting the inside is the length of my outside arm reaching the grip and also how securely I can hook the seat box with my outer foot. Unless I am riding on gravel my center of mass when cornering is 22 inches to the inside of the bike. Because I weight the same as the bike the combined mass is 11 inches to the inside of the turn keeping the bike approximately 15-20 degrees more vertical than if I rode inline(joys of a light bike).

I either need to add grip tape to the plastic foot plates or bolt on toothed steel foot pegs before I can get more weight to the inside.
Title: Re: How to Increase Corner Ground Clearance?
Post by: Stig / Major Tom on May 04, 2020, 03:34:55 PM
Me, it's check the mirror, touch of brakes.....slow in - look for rocks, gravel, tree debris, deer - then slow roll on throttle ~ to my cruising of @33MPH.
During the ride out, which is always in the dark - it is not this fast.

Which might explain how I can still have tread on a rear City Grip at 14,000 miles.

Stig



Title: Re: How to Increase Corner Ground Clearance?
Post by: TBR125 on May 04, 2020, 04:17:06 PM
That is my comfortable afternoon ride technique as well. The ditches on these roads over flow with every rain storm and there is a 1-3 inch deep gravel bar in every curve and dip. I've gotten used to the rear floating through it and I usually weight the front to keep it tracking if there is much debris.
Title: Re: How to Increase Corner Ground Clearance?
Post by: john grinsel on May 05, 2020, 08:42:28 AM
First rule  #1 let the tires do as little work as possible   #2 bike vertical as possible  #3 look where you are going  #4 get bike that doesn't drag stuff, scooter not ideal for road racing
Title: Re: How to Increase Corner Ground Clearance?
Post by: Neil955i on May 07, 2020, 08:00:27 AM
Good point John. The scooter concerned will greatly influence the likelihood of dragging undercarriage parts when cornering. I carry similar speed, lean angle on regularly ridden roads and where my old PCX125 would be carving an arc with the centre stand, the X-Town 300 goes round serenely with nothing touching down.

As an afterthought, I did improve matters markedly by slapping on a pair of aftermarket YSS shockers!  Not necessary on the XT  :)


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Title: Re: How to Increase Corner Ground Clearance?
Post by: Viper254 on May 07, 2020, 08:06:06 AM
I've never really thought about this - just looking at all your comments - I've just always kind of gone around corners with not a huge amount of thought.

I have had a couple of scooters that would ground out on corners - thinking back to my Baotian BT49, the first delivery donkey... the left centre stand lug would sometimes spark as it was basically used as a third rail :S

Can't remember how I got around that now.
Title: Re: How to Increase Corner Ground Clearance?
Post by: TBR125 on May 07, 2020, 01:09:53 PM
Thanks for all the comments. For any concerned, I'm not an aspiring road racer, just trying to ride my scoot as well as possible.
Title: Re: How to Increase Corner Ground Clearance?
Post by: Neil955i on May 07, 2020, 01:15:51 PM
Thanks for all the comments. For any concerned, I'm not an aspiring road racer, just trying to ride my scoot as well as possible.
Aren’t we all! [emoji23]


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Title: Re: How to Increase Corner Ground Clearance?
Post by: TBR125 on May 07, 2020, 01:56:11 PM
Correct! Which is why this teenager has a 125 scoot not a crotch rocket.
Title: Re: How to Increase Corner Ground Clearance?
Post by: Iahawk on May 08, 2020, 12:00:35 AM
Correct! Which is why this teenager has a 125 scoot not a crotch rocket.

TBR125, I've said it before, but you are a wise man for your age! If I'd had a motorcycle as a teen (or even 20 something) I would not be here today. Develop your skills on a low powered bike and live to ride another day.
Title: Re: How to Increase Corner Ground Clearance?
Post by: TBR125 on May 08, 2020, 01:48:30 AM
I appreciate the compliment.
Title: Re: How to Increase Corner Ground Clearance?
Post by: Neil955i on May 10, 2020, 09:44:20 AM
I appreciate the compliment.
In one thing I envy you TBR, when I was 16 and setting out on my riding life, there was nothing like this forum to sound out ideas. Just bike clubs, who looked down their noses at spotty oiks who knew nothing and only rode a “tiddler”.

Took me years to pal up with a knowledgeable guy (through work) who knows far more about bikes than I ever will.  These days, all that experience is freely available here on the forum! What a resource.
Title: Re: How to Increase Corner Ground Clearance?
Post by: TBR125 on May 10, 2020, 02:23:07 PM
It is incredible what info we have available from people all over the world. It also means I can't blame poor skill sets on lack of knowledge. 
Title: Re: How to Increase Corner Ground Clearance?
Post by: Viper254 on May 19, 2020, 08:37:11 AM
In one thing I envy you TBR, when I was 16 and setting out on my riding life, there was nothing like this forum to sound out ideas. Just bike clubs, who looked down their noses at spotty oiks who knew nothing and only rode a “tiddler”.

Took me years to pal up with a knowledgeable guy (through work) who knows far more about bikes than I ever will.  These days, all that experience is freely available here on the forum! What a resource.

On the flipside, misinformation has also been given a new lease of life ;)
Title: Re: How to Increase Corner Ground Clearance?
Post by: Neil955i on May 19, 2020, 09:30:51 AM
On the flipside, misinformation has also been given a new lease of life ;)
So cynical, in one so young! ;)

“Sources choose you must wisely” as Yoda should’ve said.


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Title: Re: How to Increase Corner Ground Clearance?
Post by: Stig / Major Tom on May 19, 2020, 08:05:27 PM
...been given a new lease of life ;)

"Reading With Comprehension"*......sadly, has not, although it often gets lots of fertilization. So to speak...

*the great Karl Malden....1987


Major Tom
Title: Re: How to Increase Corner Ground Clearance?
Post by: Stig / Major Tom on May 19, 2020, 08:10:21 PM
How to Increase Corner Ground Clearance?


little boy in the back of the room was heard to say, "Lay off the fries!"

Major Tom
Title: Re: How to Increase Corner Ground Clearance?
Post by: TBR125 on May 20, 2020, 12:05:49 AM
I've been trying to lighten up a mite but haven't been to successful. 
Title: Re: How to Increase Corner Ground Clearance?
Post by: Neil955i on May 20, 2020, 08:14:22 AM
I've been trying to lighten up a mite but haven't been to successful.
... and so say most of us!


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Title: Re: How to Increase Corner Ground Clearance?
Post by: Stig / Major Tom on May 20, 2020, 12:48:04 PM
Thanks for all the comments. For any concerned, I'm not an aspiring road racer, just trying to ride my scoot as well as possible.
Save the scraping for "Track Days".
If you've scraped something anywhere else,  you've made a mistake.

Major Tom
Title: Re: How to Increase Corner Ground Clearance?
Post by: TBR125 on May 20, 2020, 01:48:30 PM
Thanks Stig. I will try to remember that.
Title: Re: How to Increase Corner Ground Clearance?
Post by: klaviator on July 01, 2020, 07:20:55 PM
I love riding curvy roads so I run into the same problem.  The fact is that compared to the motorcycles I have owned, scooters just have less cornering clearance.  Also, unlike a motorcycle which often has peg feelers to warn you that you are approaching maximum lean angle, scooters don't have this feature.

I shift my weight to the inside and really watch my lines around the curves.  That and I slow down from the speeds I would be riding on one of my motorcycles. 

You could mount taller tires to increase cornering clearance but that is not always possible.  Both of my Kymcos had a metal tab that sticks down on the left side.  Its part of the sidestand mounting mechanism.  I took a grinder and ground away some of the metal to increase cornering clearance.  Removing the sidestand will help on some scooters but I like the sidestands too much to do that.  Take a look at what touches first on your scooter and see if anything can be done about it.

Some scooters have better clearance than others.  My Sport City 250 could really haul a$$ around curves and not scrape anything until I was way over.  I once chased down a Ducati 996 with my Sport City on a curvy road. 
Title: Re: How to Increase Corner Ground Clearance?
Post by: Neil955i on July 02, 2020, 06:46:45 AM


Some scooters have better clearance than others.  My Sport City 250 could really haul a$$ around curves and not scrape anything until I was way over.  I once chased down a Ducati 996 with my Sport City on a curvy road.

Don’t you just love that?!  Just imagine the look on that rider’s face when he realises it’s a scooter on his tail. Fantastic.


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Title: Re: How to Increase Corner Ground Clearance?
Post by: TBR125 on July 03, 2020, 09:46:13 PM
I love riding curvy roads so I run into the same problem.  The fact is that compared to the motorcycles I have owned, scooters just have less cornering clearance.  Also, unlike a motorcycle which often has peg feelers to warn you that you are approaching maximum lean angle, scooters don't have this feature.

I shift my weight to the inside and really watch my lines around the curves.  That and I slow down from the speeds I would be riding on one of my motorcycles. 

You could mount taller tires to increase cornering clearance but that is not always possible.  Both of my Kymcos had a metal tab that sticks down on the left side.  Its part of the sidestand mounting mechanism.  I took a grinder and ground away some of the metal to increase cornering clearance.  Removing the sidestand will help on some scooters but I like the sidestands too much to do that.  Take a look at what touches first on your scooter and see if anything can be done about it.

Some scooters have better clearance than others.  My Sport City 250 could really haul a$$ around curves and not scrape anything until I was way over.  I once chased down a Ducati 996 with my Sport City on a curvy road.

I also love my center stand to much for removal. I am more comfortable in right handers and the exhaust pipe limits that side. On the left the center-stand foot plate catches.