Front dive under breaking ?
Ultimate HDF Member
Joined: Apr 2010
Posts: 7,138
Likes: 26
From: Southern Oregon
Mono tubes would do the trick but expensive. Intiminators also work well. Oil change would also help. I added prog. Springs and new HD type E juice. Maybe not the best option but way better than stock (total less than 100.00) 2010 fxd
Road Warrior
Joined: Apr 2010
Posts: 1,833
Likes: 35
From: Southern Maryland
you might try a little lighter weight in the saddle. i was up to 290 and dropped down to 250 and it helped a lot in my control over the bike. hope to lose about another 40 lbs. with the front brake having the most stopping force, isn't it designed to shift the weight forward when the brake is applied. if you're bottoming out, guess that would be a bad thing. hope you solve the problem. i'm 61 and at that age where its a pita to lose even a pound. not easy for sure.....besides, i like beer. not being a smartass, just found it to be true.
Thread Starter
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Road Master
Joined: Sep 2011
Posts: 764
Likes: 1
From: N. Texas
you might try a little lighter weight in the saddle. i was up to 290 and dropped down to 250 and it helped a lot in my control over the bike. hope to lose about another 40 lbs. with the front brake having the most stopping force, isn't it designed to shift the weight forward when the brake is applied. if you're bottoming out, guess that would be a bad thing. hope you solve the problem. i'm 61 and at that age where its a pita to lose even a pound. not easy for sure.....besides, i like beer. not being a smartass, just found it to be true.
Tourer
Joined: Apr 2013
Posts: 313
Likes: 84
From: Central KY
No i am referring to the weight of the bike and rider shifting onto the front wheel when braking
this is motion 101.
and when accelerating the weight bias shifts toward the rear
this has little to do with which brake is used to slow the vehicle- it is the fact that the vehicle is slowing...
I hope that you mis-understood my original post.
otherwise get thee to a rider course asap.
mike
this is motion 101.
and when accelerating the weight bias shifts toward the rear
this has little to do with which brake is used to slow the vehicle- it is the fact that the vehicle is slowing...
I hope that you mis-understood my original post.
otherwise get thee to a rider course asap.
mike
Perhaps you should get 'thee' to a physics course.
Grand HDF Member
Joined: Jan 2012
Posts: 4,459
Likes: 2,900
From: Oklahoma
The two extremes of weight shift: The "stoppie" where the rear wheel leaves the pavement under braking force from the front wheel and all weight is carried by the only tire in contact with the ground, the front tire.
The wheelie: when under acceleration, the front wheel leaves the ground and the entire weight of the bike and driver is on the rear wheel. Still no such thing as weight transfer?
A spring in compression deforms to a certain length when a certain weight is applied. The only way to further deform the spring is to apply more weight . Hence, when stopping, the front spring compresses and the rear spring extends directly demonstrating wieght transfer. The suspension springs could just as easily be springs in a scale, you know what happens to a scale as weight is added and removed.
The wheelie: when under acceleration, the front wheel leaves the ground and the entire weight of the bike and driver is on the rear wheel. Still no such thing as weight transfer?
A spring in compression deforms to a certain length when a certain weight is applied. The only way to further deform the spring is to apply more weight . Hence, when stopping, the front spring compresses and the rear spring extends directly demonstrating wieght transfer. The suspension springs could just as easily be springs in a scale, you know what happens to a scale as weight is added and removed.
I recommend 15w Bell Ray fork oil it's the best on the market. You can also add preload to the springs. I used a 1" piece of pvc the size of the springs to increase the preload.
Ultimate HDF Member
Joined: Mar 2012
Posts: 6,129
Likes: 143
From: Santa Cruz
I would go with racetech springs over progressive!
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Tourer
Joined: Mar 2013
Posts: 431
Likes: 0
From: b.c.
The problem is the 1972 suspension on these bikes! Solutions vary by effectiveness and price. Heavier oil will help dive at the espense of ride. Intiminators help a bunch as do racetech emulators etc. I have no experience with monotubes.
...and weight transfer is a real thing for those that are confused!
Dave
...and weight transfer is a real thing for those that are confused!
Dave
Road Captain
Joined: Sep 2010
Posts: 535
Likes: 0
From: Huntington Beach
+1 on Racetech!
This has been the single best mod I have done. Completely different bike now. The best thing is it's tuneable and you can change the height from 0" to 1" or 2" drop with the springs included in the kit. Man I wished I had done this on my others.
This has been the single best mod I have done. Completely different bike now. The best thing is it's tuneable and you can change the height from 0" to 1" or 2" drop with the springs included in the kit. Man I wished I had done this on my others.