I don't blame you for wanting a leg on it - will greatly reduce metal fatigue from flexing. I was trying to think of how it could be designed in a way that included additional support to the vehicle without manual intervention. The only things I came up with were complicated and difficult to get right, a jack and a pole that takes 30 seconds to put in is a lot more sensible.
Ditch the jack. A suggestion: some sort of spindle thread, just like they use in non hydraulic transmission/suspension jacks. Also some sort of safety circuit is advisable, so you can't retract the sliding room with the support leg extended.
By the way Dan, the leg could be permanently attached to a hinge point (where your jack currently applies pressure). To pack up, you release the clamp, telescope the tubes to minimum length and fold inward under the floor, where it is clipped for stowing purposes
Good to see you back on the truck and posting again Dan, like the trial and error way you go about things, better than having everything planned to the last degree. Life's just not like that.
@Dan Campion Hi Dan, I sorted in my camper lifting roof (altogether around 400kg) the system in this way: 4 actuators in rectangular pattern, stroke 750mm, approx. in 30% and 70% of the roof length to keep load on each actuator bit similar, then there are 2 control units (each for front pair and rear pair of actuators) connected together with special Y-fork communication cable and at the end of the fork is operating buttons unit (just up and down buttons). This system is from Timotion (made in Taiwan), often used in hospital beds and costs around 3500 Euros. While lifting roof, I could clearly hear changing speed of each actuator depending on the actual load in that time. In the system are also 4 linear guide rails+trolleys (included in amount of 3500EUR) Actuators from TIMOTION Technology Co. Ltd. 4x actuator MA2 2x control unit TC15 1x Y-fork cable 1x buttons unit TDH16 Linear guide system from Chieftek Precision Co., 4x rail ARC/HRC25 4x trolley HRC25
Hi Dan , Good video, I agree that you should have a separate support on the slide out room. But I reckon that you do not need a jack to include in the design to make it adjustable. Sliding tubes incorporate an over centre clamp (for example in a vice grip) to hold the weight while extended. When setting up you deploy the leg and extend to an estimated length prior to the leg hanging vertical, apply a little muscle power via your shoulder, slightly lift the extension (your leverage is 1.3m plus the distance to the chassis centre) and allow the leg to hang vertical, then drop your shoulder and 'Bob Your Uncle'
Hey Kevin, thank you! That's a great idea, that way I could have it tuck neatly up underneath the room while traveling, I wonder where I could buy something like that off the shelf? thanks for the suggestion!
I don't know anything about hydraulics, but is it okay that the hydraulic shaft doesn't align with the extendable leg? Does that lessen the strength or stability? I bloody love this truck and all the slidey bits!
Excellent pick up Geof! We'll make a fabricator out of you yet, or a QA inspector at the very least. I didn't actually notice this until I had finished building it. It's got a pretty big base so I think it will be fine
Do you mind clarifying what you mean by "synchronise" in relation to the linear actuators? Is it simply getting them to start at the same time, or is the pulse to the internal motor synchronised for each actuator plugged into the unit, the assumption being they have the same linear movement for each pulse? If it's just pulses, could you use a micro to generate the pulse and just have 6 outputs?
By synchronised I mean that all the actuators travel at the same speed, lifting the roof evenly at all lifting points. Most of the cheaper synchronised actuators have a hall sensor in the motor to provide feedback to the controller, which then restricts the voltage to each actuator accordingly (I think, I'm no expert with this stuff) Do you think it would be possible to synchronise 6 actuators in this way?
@@dancampion I have not done it, but a hall effect sensor is a fairly straight forward, binary switch type thing that says - ok a magnet went past just now. I think you mentioned the 6 actuator system was $15k? Sounds ridiculous if all it involves is tracking rotation of the motor and controlling DC voltage to different ones to keep them in sync. It would be a project but definitely something you could do I reckon. Add 4 hall effect sensors to a motor and increase the resolution?
@@dancampion @Dan Campion Hi Dan, I sorted in my camper lifting roof (altogether around 400kg) the system in this way: 4 actuators in rectangular pattern, stroke 750mm, approx. in 30% and 70% of the roof length to keep load on each actuator bit similar, then there are 2 control units (each for front pair and rear pair of actuators) connected together with special Y-fork communication cable and at the end of the fork is operating buttons unit (just up and down buttons). This system is from Timotion (made in Taiwan), often used in hospital beds and costs around 3500 Euros. While lifting roof, I could clearly hear changing speed of each actuator depending on the actual load in that time. In the system are also 4 linear guide rails+trolleys (included in amount of 3500EUR) Actuators from TIMOTION Technology Co. Ltd. 4x actuator MA2 2x control unit TC15 1x Y-fork cable 1x buttons unit TDH16 Linear guide system from Chieftek Precision Co., 4x rail ARC/HRC25 4x trolley HRC25
It weighs about 200kg, it has a cantilever of 1.3m, that's a lot of pressure on the jack once the body has been leveled out. It would take an equal about of force on the opposite side to take the weight off the jack. I'm not saying it's impossible, but it's exceedingly unlikely
Your finish smile 😁
⛵️🤷♂️😉. As you were. Keep up the great work. 👍🏻
WHAT A RIG!!
I don't blame you for wanting a leg on it - will greatly reduce metal fatigue from flexing.
I was trying to think of how it could be designed in a way that included additional support to the vehicle without manual intervention. The only things I came up with were complicated and difficult to get right, a jack and a pole that takes 30 seconds to put in is a lot more sensible.
Nice job... it's better than nothing, but you are right in that you probably need something more substantial.
Thanks Tyler, I'll probably use something similar to the legs I used for the rear deck eventually
Ditch the jack. A suggestion: some sort of spindle thread, just like they use in non hydraulic transmission/suspension jacks.
Also some sort of safety circuit is advisable, so you can't retract the sliding room with the support leg extended.
By the way Dan, the leg could be permanently attached to a hinge point (where your jack currently applies pressure). To pack up, you release the clamp, telescope the tubes to minimum length and fold inward under the floor, where it is clipped for stowing purposes
Yeah that was my thought when I read your first comment, I think that's going to be the way to go, I'll get around to it at some point
Good to see you back on the truck and posting again Dan, like the trial and error way you go about things, better than having everything planned to the last degree. Life's just not like that.
Thanks Ron!
Can't wait to see this truck outside in the full glory on a beautiful spot!
You and me both Vic!
Not so much helpful, but just wow- that's one hell of a workshop!
@Dan Campion Hi Dan, I sorted in my camper lifting roof (altogether around 400kg) the system in this way: 4 actuators in rectangular pattern, stroke 750mm, approx. in 30% and 70% of the roof length to keep load on each actuator bit similar, then there are 2 control units (each for front pair and rear pair of actuators) connected together with special Y-fork communication cable and at the end of the fork is operating buttons unit (just up and down buttons). This system is from Timotion (made in Taiwan), often used in hospital beds and costs around 3500 Euros.
While lifting roof, I could clearly hear changing speed of each actuator depending on the actual load in that time. In the system are also 4 linear guide rails+trolleys (included in amount of 3500EUR)
Actuators from TIMOTION Technology Co. Ltd.
4x actuator MA2
2x control unit TC15
1x Y-fork cable
1x buttons unit TDH16
Linear guide system from Chieftek Precision Co.,
4x rail ARC/HRC25
4x trolley HRC25
shot Bro, dont forget to add to your MOVING CAMP CHECKLIST......remove slide out support leg...... else......oops.....
Hi Dan , Good video, I agree that you should have a separate support on the slide out room. But I reckon that you do not need a jack to include in the design to make it adjustable. Sliding tubes incorporate an over centre clamp (for example in a vice grip) to hold the weight while extended. When setting up you deploy the leg and extend to an estimated length prior to the leg hanging vertical, apply a little muscle power via your shoulder, slightly lift the extension (your leverage is 1.3m plus the distance to the chassis centre) and allow the leg to hang vertical, then drop your shoulder and 'Bob Your Uncle'
Hey Kevin, thank you! That's a great idea, that way I could have it tuck neatly up underneath the room while traveling, I wonder where I could buy something like that off the shelf? thanks for the suggestion!
I don't know anything about hydraulics, but is it okay that the hydraulic shaft doesn't align with the extendable leg? Does that lessen the strength or stability?
I bloody love this truck and all the slidey bits!
Excellent pick up Geof! We'll make a fabricator out of you yet, or a QA inspector at the very least. I didn't actually notice this until I had finished building it. It's got a pretty big base so I think it will be fine
@@dancampion Haha! More chance of being a QA Inspector/Trouble-maker.
The other thing I have seen people use for stabilisers (you have too probably) is scissor jack - no worries with slippage then?
Precarioso
Do you mind clarifying what you mean by "synchronise" in relation to the linear actuators? Is it simply getting them to start at the same time, or is the pulse to the internal motor synchronised for each actuator plugged into the unit, the assumption being they have the same linear movement for each pulse?
If it's just pulses, could you use a micro to generate the pulse and just have 6 outputs?
By synchronised I mean that all the actuators travel at the same speed, lifting the roof evenly at all lifting points. Most of the cheaper synchronised actuators have a hall sensor in the motor to provide feedback to the controller, which then restricts the voltage to each actuator accordingly (I think, I'm no expert with this stuff) Do you think it would be possible to synchronise 6 actuators in this way?
@@dancampion I have not done it, but a hall effect sensor is a fairly straight forward, binary switch type thing that says - ok a magnet went past just now.
I think you mentioned the 6 actuator system was $15k? Sounds ridiculous if all it involves is tracking rotation of the motor and controlling DC voltage to different ones to keep them in sync.
It would be a project but definitely something you could do I reckon.
Add 4 hall effect sensors to a motor and increase the resolution?
@@dancampion @Dan Campion Hi Dan, I sorted in my camper lifting roof (altogether around 400kg) the system in this way: 4 actuators in rectangular pattern, stroke 750mm, approx. in 30% and 70% of the roof length to keep load on each actuator bit similar, then there are 2 control units (each for front pair and rear pair of actuators) connected together with special Y-fork communication cable and at the end of the fork is operating buttons unit (just up and down buttons). This system is from Timotion (made in Taiwan), often used in hospital beds and costs around 3500 Euros.
While lifting roof, I could clearly hear changing speed of each actuator depending on the actual load in that time. In the system are also 4 linear guide rails+trolleys (included in amount of 3500EUR)
Actuators from TIMOTION Technology Co. Ltd.
4x actuator MA2
2x control unit TC15
1x Y-fork cable
1x buttons unit TDH16
Linear guide system from Chieftek Precision Co.,
4x rail ARC/HRC25
4x trolley HRC25
baba booey
nice idea, but if you arent stable everywhere when you move about the cabin and shift the weight the jack will probably fall out
It weighs about 200kg, it has a cantilever of 1.3m, that's a lot of pressure on the jack once the body has been leveled out. It would take an equal about of force on the opposite side to take the weight off the jack. I'm not saying it's impossible, but it's exceedingly unlikely