rhagfo wrote:4x4ord wrote:dedmiston wrote:4x4ord wrote:
I carry my 800 lb bike on a 200 lb lift. So I have 1000 lbs carried 2 feet behind the rear bumper of my fiver. My pin is lightened by about 700 lbs. I end up replacing some of that weight by carrying 400 lbs of weight in the bedroom closet over the pin.
To calculate how much weight will come off your pin you need to know the distance from the pin to centre of trailer axles; the distance from centre of trailer axles to the centre of your motorcycle when it is parked in the garage. Formula is simply:
Weight of bike x distance behind axle/distance from axle centre to pin = reduction in pin weight. If the centre of your 850 lb bike is parked 70 inches behind the centre of your trailer axles and the distance from the centre of your trailer axles to the pin is 350 inches your bike would reduce your pin weight by 146 lbs.
I'm having traumatic flashbacks to my horrible 7th grade algebra class where we spent 75% of the year dealing with fulcrums. I don't know why my dreaded teacher was so hung up on fulcrums, but 90% of us tuned out and had to play catch-up the next year to get back on track.
Having said that, how do you know where the fulcrum is on a tandem or triple axle trailer? Or is the fulcrum six feet wide?
I would expect that the more axles that are involved the less precise the fulcrum point is. but, because equalizers are used with our two or three axle trailers the fulcrum tends to be at the centre of the axles .... so on a triple axle trailer, the centre of the centre axle would be the fulcrum. A tandem would have the fulcrum fall at the mid point of the two axles. So long as the trailer and ground is level the equalizers do a pretty good job of distributing the weight equally to all the axles.
There
Is no true fulcrum point on tandem axles, the math gets pretty complicated.
rhagfo wrote:4x4ord wrote:dedmiston wrote:4x4ord wrote:
I carry my 800 lb bike on a 200 lb lift. So I have 1000 lbs carried 2 feet behind the rear bumper of my fiver. My pin is lightened by about 700 lbs. I end up replacing some of that weight by carrying 400 lbs of weight in the bedroom closet over the pin.
To calculate how much weight will come off your pin you need to know the distance from the pin to centre of trailer axles; the distance from centre of trailer axles to the centre of your motorcycle when it is parked in the garage. Formula is simply:
Weight of bike x distance behind axle/distance from axle centre to pin = reduction in pin weight. If the centre of your 850 lb bike is parked 70 inches behind the centre of your trailer axles and the distance from the centre of your trailer axles to the pin is 350 inches your bike would reduce your pin weight by 146 lbs.
I'm having traumatic flashbacks to my horrible 7th grade algebra class where we spent 75% of the year dealing with fulcrums. I don't know why my dreaded teacher was so hung up on fulcrums, but 90% of us tuned out and had to play catch-up the next year to get back on track.
Having said that, how do you know where the fulcrum is on a tandem or triple axle trailer? Or is the fulcrum six feet wide?
I would expect that the more axles that are involved the less precise the fulcrum point is. but, because equalizers are used with our two or three axle trailers the fulcrum tends to be at the centre of the axles .... so on a triple axle trailer, the centre of the centre axle would be the fulcrum. A tandem would have the fulcrum fall at the mid point of the two axles. So long as the trailer and ground is level the equalizers do a pretty good job of distributing the weight equally to all the axles.
There
Is no true fulcrum point on tandem axles, the math gets pretty complicated.
WV Camper wrote:
I have anew 2020 Chevy 3500 SRW with the Duramax engine. The payload on the door is 3769 but the hitch weight for gooseneck (and 5th wheel?) is 3180. Does anyone know why this is so much lower than the payload number? We would like to have the Montana high country 383TH, the hitch weight is 3225. So, this is a miss by 45 lbs. how much lighter would you expect the pin weight to be with my 850 lb motorcycle in the back?
WV Camper wrote:
I have anew 2020 Chevy 3500 SRW with the Duramax engine. The payload on the door is 3769 but the hitch weight for gooseneck (and 5th wheel?) is 3180. Does anyone know why this is so much lower than the payload number? We would like to have the Montana high country 383TH, the hitch weight is 3225. So, this is a miss by 45 lbs. how much lighter would you expect the pin weight to be with my 850 lb motorcycle in the back?
4x4ord wrote:dedmiston wrote:4x4ord wrote:
I carry my 800 lb bike on a 200 lb lift. So I have 1000 lbs carried 2 feet behind the rear bumper of my fiver. My pin is lightened by about 700 lbs. I end up replacing some of that weight by carrying 400 lbs of weight in the bedroom closet over the pin.
To calculate how much weight will come off your pin you need to know the distance from the pin to centre of trailer axles; the distance from centre of trailer axles to the centre of your motorcycle when it is parked in the garage. Formula is simply:
Weight of bike x distance behind axle/distance from axle centre to pin = reduction in pin weight. If the centre of your 850 lb bike is parked 70 inches behind the centre of your trailer axles and the distance from the centre of your trailer axles to the pin is 350 inches your bike would reduce your pin weight by 146 lbs.
I'm having traumatic flashbacks to my horrible 7th grade algebra class where we spent 75% of the year dealing with fulcrums. I don't know why my dreaded teacher was so hung up on fulcrums, but 90% of us tuned out and had to play catch-up the next year to get back on track.
Having said that, how do you know where the fulcrum is on a tandem or triple axle trailer? Or is the fulcrum six feet wide?
I would expect that the more axles that are involved the less precise the fulcrum point is. but, because equalizers are used with our two or three axle trailers the fulcrum tends to be at the centre of the axles .... so on a triple axle trailer, the centre of the centre axle would be the fulcrum. A tandem would have the fulcrum fall at the mid point of the two axles. So long as the trailer and ground is level the equalizers do a pretty good job of distributing the weight equally to all the axles.
4x4ord wrote:dedmiston wrote:4x4ord wrote:
I carry my 800 lb bike on a 200 lb lift. So I have 1000 lbs carried 2 feet behind the rear bumper of my fiver. My pin is lightened by about 700 lbs. I end up replacing some of that weight by carrying 400 lbs of weight in the bedroom closet over the pin.
To calculate how much weight will come off your pin you need to know the distance from the pin to centre of trailer axles; the distance from centre of trailer axles to the centre of your motorcycle when it is parked in the garage. Formula is simply:
Weight of bike x distance behind axle/distance from axle centre to pin = reduction in pin weight. If the centre of your 850 lb bike is parked 70 inches behind the centre of your trailer axles and the distance from the centre of your trailer axles to the pin is 350 inches your bike would reduce your pin weight by 146 lbs.
I'm having traumatic flashbacks to my horrible 7th grade algebra class where we spent 75% of the year dealing with fulcrums. I don't know why my dreaded teacher was so hung up on fulcrums, but 90% of us tuned out and had to play catch-up the next year to get back on track.
Having said that, how do you know where the fulcrum is on a tandem or triple axle trailer? Or is the fulcrum six feet wide?
I would expect that the more axles that are involved the less precise the fulcrum point is. but, because equalizers are used with our two or three axle trailers the fulcrum tends to be at the centre of the axles .... so on a triple axle trailer, the centre of the centre axle would be the fulcrum. A tandem would have the fulcrum fall at the mid point of the two axles. So long as the trailer and ground is level the equalizers do a pretty good job of distributing the weight equally to all the axles.
dedmiston wrote:4x4ord wrote:
I carry my 800 lb bike on a 200 lb lift. So I have 1000 lbs carried 2 feet behind the rear bumper of my fiver. My pin is lightened by about 700 lbs. I end up replacing some of that weight by carrying 400 lbs of weight in the bedroom closet over the pin.
To calculate how much weight will come off your pin you need to know the distance from the pin to centre of trailer axles; the distance from centre of trailer axles to the centre of your motorcycle when it is parked in the garage. Formula is simply:
Weight of bike x distance behind axle/distance from axle centre to pin = reduction in pin weight. If the centre of your 850 lb bike is parked 70 inches behind the centre of your trailer axles and the distance from the centre of your trailer axles to the pin is 350 inches your bike would reduce your pin weight by 146 lbs.
I'm having traumatic flashbacks to my horrible 7th grade algebra class where we spent 75% of the year dealing with fulcrums. I don't know why my dreaded teacher was so hung up on fulcrums, but 90% of us tuned out and had to play catch-up the next year to get back on track.
Having said that, how do you know where the fulcrum is on a tandem or triple axle trailer? Or is the fulcrum six feet wide?
dedmiston wrote:4x4ord wrote:
I carry my 800 lb bike on a 200 lb lift. So I have 1000 lbs carried 2 feet behind the rear bumper of my fiver. My pin is lightened by about 700 lbs. I end up replacing some of that weight by carrying 400 lbs of weight in the bedroom closet over the pin.
To calculate how much weight will come off your pin you need to know the distance from the pin to centre of trailer axles; the distance from centre of trailer axles to the centre of your motorcycle when it is parked in the garage. Formula is simply:
Weight of bike x distance behind axle/distance from axle centre to pin = reduction in pin weight. If the centre of your 850 lb bike is parked 70 inches behind the centre of your trailer axles and the distance from the centre of your trailer axles to the pin is 350 inches your bike would reduce your pin weight by 146 lbs.
I'm having traumatic flashbacks to my horrible 7th grade algebra class where we spent 75% of the year dealing with fulcrums. I don't know why my dreaded teacher was so hung up on fulcrums, but 90% of us tuned out and had to play catch-up the next year to get back on track.
Having said that, how do you know where the fulcrum is on a tandem or triple axle trailer? Or is the fulcrum six feet wide?
4x4ord wrote:
I carry my 800 lb bike on a 200 lb lift. So I have 1000 lbs carried 2 feet behind the rear bumper of my fiver. My pin is lightened by about 700 lbs. I end up replacing some of that weight by carrying 400 lbs of weight in the bedroom closet over the pin.
To calculate how much weight will come off your pin you need to know the distance from the pin to centre of trailer axles; the distance from centre of trailer axles to the centre of your motorcycle when it is parked in the garage. Formula is simply:
Weight of bike x distance behind axle/distance from axle centre to pin = reduction in pin weight. If the centre of your 850 lb bike is parked 70 inches behind the centre of your trailer axles and the distance from the centre of your trailer axles to the pin is 350 inches your bike would reduce your pin weight by 146 lbs.
4x4ord wrote:
I carry my 800 lb bike on a 200 lb lift. So I have 1000 lbs carried 2 feet behind the rear bumper of my fiver. My pin is lightened by about 700 lbs. I end up replacing some of that weight by carrying 400 lbs of weight in the bedroom closet over the pin.
To calculate how much weight will come off your pin you need to know the distance from the pin to centre of trailer axles; the distance from centre of trailer axles to the centre of your motorcycle when it is parked in the garage. Formula is simply:
Weight of bike x distance behind axle/distance from axle centre to pin = reduction in pin weight. If the centre of your 850 lb bike is parked 70 inches behind the centre of your trailer axles and the distance from the centre of your trailer axles to the pin is 350 inches your bike would reduce your pin weight by 146 lbs.
JIMNLIN wrote:WV Camper wrote:
I have anew 2020 Chevy 3500 SRW with the Duramax engine. The payload on the door is 3769 but the hitch weight for gooseneck (and 5th wheel?) is 3180. Does anyone know why this is so much lower than the payload number? We would like to have the Montana high country 383TH, the hitch weight is 3225. So, this is a miss by 45 lbs. how much lighter would you expect the pin weight to be with my 850 lb motorcycle in the back?
Actually you have two questions...and you got actual answers to both. Your last question cannot be answered with the exact weight as way too many variables. I don't have your exact trailer but from loading dozens of flatbed trailers/enclosed trailers/stock trailers I would agree with the poster that answered your last question.
JIMNLIN wrote:WV Camper wrote:
I have anew 2020 Chevy 3500 SRW with the Duramax engine. The payload on the door is 3769 but the hitch weight for gooseneck (and 5th wheel?) is 3180. Does anyone know why this is so much lower than the payload number? We would like to have the Montana high country 383TH, the hitch weight is 3225. So, this is a miss by 45 lbs. how much lighter would you expect the pin weight to be with my 850 lb motorcycle in the back?
Actually you have two questions...and you got actual answers to both. Your last question cannot be answered with the exact weight as way too many variables. I don't have your exact trailer but from loading dozens of flatbed trailers/enclosed trailers/stock trailers I would agree with the poster that answered your last question.
azdryheat wrote:
When I had my truck weighed with and without the toy hauler, the front axle weight was the same telling me none of the trailer's weight is on the front axle.
azdryheat wrote:
When I had my truck weighed with and without the toy hauler, the front axle weight was the same telling me none of the trailer's weight is on the front axle.
