Lifting the ST from their belly

siroco

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Hello guys, I would like to be able to lift the motorcycle using a hydraulic lift that holds it by the belly. I suspect that the weight of the bike is too much for Yamaha's stock skid plate and it will leak since it is held in place by three bolts. Has anyone in this forum suspended the motorcycle from their belly?
 

sheikyerbooty

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I gently lift the front end with a small car jack from the Givi sump guard. Not off the original plastic one, if that's what you mean?
 

StefanOnHisS10

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Please don’t. The OEM plastic one and the OEM aluminum one are mounted in the wrong place and to weak to do that. You could LIGHTLY support the aluminum one for better balance when on a lift or something. But not to raise the bike.
 

~TABASCO~

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With our skid plate you can lift the bike as you described……. No problem -
 

RCinNC

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If you're talking about the entire weight of the bike being loaded onto the OEM skid plate when you lift it, then I'd recommend you don't do it. That's about 700 pounds loaded onto 3 small bolts that are screwed into not-very-substantial aluminum. Plus, the support arms at the front of the OEM skid plate are made to be sacrificial items; theoretically, they would bend from an impact and (maybe) save the load from being transferred to the engine covers and cracking them. You wouldn't want them to bend suddenly while the whole weight of the bike was on the skid plate.

I've supported the front of the bike with a jack under the skid plate, but the center stand was still down and I was just tilting the bike towards the rear till the rear wheel was on the ground. I didn't even like doing that, so eventually I made a set of jack stands out of some 2x4's to hold up the bike when I was working on it. Between the jack stands and the center stand, I've had the front and rear of the bike off without having to put a big load on the skid plate.



 

PachmanP

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If you're talking about the entire weight of the bike being loaded onto the OEM skid plate when you lift it, then I'd recommend you don't do it. That's about 700 pounds loaded onto 3 small bolts that are screwed into not-very-substantial aluminum. Plus, the support arms at the front of the OEM skid plate are made to be sacrificial items; theoretically, they would bend from an impact and (maybe) save the load from being transferred to the engine covers and cracking them. You wouldn't want them to bend suddenly while the whole weight of the bike was on the skid plate.

I've supported the front of the bike with a jack under the skid plate, but the center stand was still down and I was just tilting the bike towards the rear till the rear wheel was on the ground. I didn't even like doing that, so eventually I made a set of jack stands out of some 2x4's to hold up the bike when I was working on it. Between the jack stands and the center stand, I've had the front and rear of the bike off without having to put a big load on the skid plate.



That's a nice setup.
 

bimota

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If you're talking about the entire weight of the bike being loaded onto the OEM skid plate when you lift it, then I'd recommend you don't do it. That's about 700 pounds loaded onto 3 small bolts that are screwed into not-very-substantial aluminum. Plus, the support arms at the front of the OEM skid plate are made to be sacrificial items; theoretically, they would bend from an impact and (maybe) save the load from being transferred to the engine covers and cracking them. You wouldn't want them to bend suddenly while the whole weight of the bike was on the skid plate.

I've supported the front of the bike with a jack under the skid plate, but the center stand was still down and I was just tilting the bike towards the rear till the rear wheel was on the ground. I didn't even like doing that, so eventually I made a set of jack stands out of some 2x4's to hold up the bike when I was working on it. Between the jack stands and the center stand, I've had the front and rear of the bike off without having to put a big load on the skid plate.



can i ask how you get that wooden stand under the bike, whats the procedure

rob
 

RCinNC

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I have a floor jack that I'll put under the skid plate, and I'll tilt the bike to the rear til the rear wheel touches down. I slide the stands under each crashbar, bolt the crossover bar into place, and then remove the jack.

If I have a helper of sufficient mass, I'll have them push the bike down at the rear in order to lift the front end, and I'll slide the stands into place.
 

bimota

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I have a floor jack that I'll put under the skid plate, and I'll tilt the bike to the rear til the rear wheel touches down. I slide the stands under each crashbar, bolt the crossover bar into place, and then remove the jack.

If I have a helper of sufficient mass, I'll have them push the bike down at the rear in order to lift the front end, and I'll slide the stands into place.
thanks for that , going to get some timber to make one myself to like that

cheers

rob
 

RCinNC

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Because it's hard to see these parts of the stands in the photos, I figured I'd include some new photos for you, Bimota, so you could get a better idea of how they were made.

Since a solid point of contact is pretty important with a jackstand, I carved out the ends of the stands so they would provide the best points of contact with the crash bars. I didn't want the round bars to just sit on top of the 2x4's; it would be too easy for them the slip out of position if the bike was jarred while I was working on it. The cutouts on the tops of the supports, in conjunction with the crossover bar, lock the supports in position.

I shaped the ends of the stands with a large spade bit in a drill, a handsaw, a rasp and a chisel. The way they're shaped would depend on the particular shape of your crash bars, so my photos are more of an example than of a specific guide of you you should fit the supports to your particular bars.





I'm almost embarrassed by how rough this project is. It was a rough and ready design that I knocked together in the middle of a maintenance task, with the intent to refine the design later. They worked well enough though, and I already had enough other projects going, that I left them as-is.
 

bimota

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Because it's hard to see these parts of the stands in the photos, I figured I'd include some new photos for you, Bimota, so you could get a better idea of how they were made.

Since a solid point of contact is pretty important with a jackstand, I carved out the ends of the stands so they would provide the best points of contact with the crash bars. I didn't want the round bars to just sit on top of the 2x4's; it would be too easy for them the slip out of position if the bike was jarred while I was working on it. The cutouts on the tops of the supports, in conjunction with the crossover bar, lock the supports in position.

I shaped the ends of the stands with a large spade bit in a drill, a handsaw, a rasp and a chisel. The way they're shaped would depend on the particular shape of your crash bars, so my photos are more of an example than of a specific guide of you you should fit the supports to your particular bars.





I'm almost embarrassed by how rough this project is. It was a rough and ready design that I knocked together in the middle of a maintenance task, with the intent to refine the design later. They worked well enough though, and I already had enough other projects going, that I left them as-is.
wow thanks for that superb, funny enough i have altrider bars to so that helps, i,m a carpenter by trade anyway so wood is no issue lol

rob
 

cyclemike4

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I do lift my bikes front wheel only with a floor jack. the bike is on the center stand. I do have an aluminum pan with rubber bumpers on it that touches the motor right where I place the jack. I also have connection points in the top of my shop where I work on my bikes to hang the bike from the ceiling. After I get them lifted I leave them on the center stand and keep the jack there for stability but the bike is pretty much hanging. I can take both wheels off at the same time but I rarely do that.
 

RCinNC

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I think it's fine to use a jack to pivot the front of the bike on the center stand to get the front wheel up in the air. I don't have the math skills to calculate how much of a load is being placed on the skid plate/engine when doing that, but it's got to be waaaaay less than the load if you lifted the entire weight of the bike using the skid plate.

My old man was a mechanic, and one of the few things he taught me was "never count on a jack". That was one of the reasons I made the jackstands; I didn't want to leave the bike up on a jack overnight and have it end up falling to the floor because the front end had been removed and the jack lost pressure.

If I ever get around to redesigning the jack stands so they have adjustable height, I don't think it would be difficult to simultaneously take the front and rear end off and leave the rest supported by just the jackstands and the center stand.
 

bimota

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the last tiome i took the front end off mine for a week, i had it on the centre stand jacked the front end up with a trolley jack so the rear wheel touched the floor then under the belly pan packed it tight with timber and removed the trolley jack it was fine
20221124_122428.jpg20221124_122733.jpg
 

StefanOnHisS10

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wow thanks for that superb, funny enough i have altrider bars to so that helps, i,m a carpenter by trade anyway so wood is no issue lol

rob
ow haha!! I used to think a carpenter was someone who does in/places carpets. For the floor in a house :D :rolleyes:. What do you call those people?
 
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