Recent content by AielloJ

If you'd like, we can start over to the question that restarted this, and I'll avoid going off tangents: Are you aware of any significant detrimental side effects in terms of pump performance or life expectancy by having the shaft run below the minimum RPM "occasionally"?

The rear wheels should be able to turn at low RPMs. What's your reasoning for veering away from that pump? I can't find any, so that's why I said earlier I'll just go with it and find out myself. The CVT? I'm not sure what you're getting at here. Anyways, that is not my point of concern...

On page 10 (using a PDF viewer), you should see a table for HPV6. Minimum RPM is 500. Yes, that is true for when the vehicle is stationary, but in the event, I need to travel slow, the intermediate shaft may not be rotating at the speed necessary to keep the pump's shaft rpm above 500 RPM...

I guess it sounds like I'll need to find a workaround for the pump's minimum RPM right? It appears that running the pump at lower RPMs than recommended will quickly shorten the pump's lifespan. Edit: I'll do a 180 on that. I can't find any literature about this, so I'll figure it out myself...

Hm motor? You mean the engine shaft? Edit: What if I modified the system to use chain drive, so that the gearing between the engine shaft and pump shaft is almost 1:1 so that the pump is always spinning with the engine idle? But that'll cause more issues if I'm stationary, the pump will be...

Here's a schematic of my idea. No clutch yet, I want to avoid that if possible. The input shaft is connected to the CVT, which is connected to the engine. So if I'm understanding this correctly, within a certain vehicle speed (say 0 mph, and 10mph, 10mph is arbitrarily picked in this case where...

I should've mentioned there's a CVT in there, so the entire gearbox won't be rotating until the engine's rpm of the shaft reaches a minimum threshold, and even with the engine running at idle, the pump shaft will be at 0 RPM. In the event, I want to accelerate, I still do think there is an...

Nowhere I can find a minimum pump RPM for this pump, but I talked to the manufacturer who said there was a minimum RPM. http://www.zeushydratech.com/product/vickers-pvb6-axial-piston-pump/ HPV6 is the next closest one which does clearly state it has a minimum RPM of 500...

So if that's the case, why do most axial pumps have a minimum RPM rating? I would imagine that if I'm operating a pump in the regime of 0 RPM to the minimum working RPM, it won't produce enough flow to create the pressure necessary to provide torque to the front wheels, so the front two wheels...

So I guess an issue that appears to a part of all or at least most pumps is that there is a minimum shaft RPM, and going below said RPM would cause overheating. Going off of this, it seems that the vehicle can't go below, say 10mph at all then? I have found a few pumps that only state their...

What might be some considerations or things to keep an eye out for when designing the circuitry? I've started to do research on the circuitry, specifically sizing the hydraulic lines for now.

I emailed the company but still waiting on a response from them.

Yeah that's my bad I posted the wrong link. This should be the right link now. Size 22 meets the displacement from my calculations.

I think this motor and pump would work. https://aheinfo.com/product/vdc-1b-1a5-20-variable-volume-vane-pump/ https://www.surpluscenter.com/Hydraulics/Hydraulic-Motors/Low-Speed-High-Torque-Hydraulic-Motors/1-21-cu-in-Char-Lynn-129-0003-Hydraulic-Motor-9-1156.axd Now, the only reason why this...

Ok that makes sense. Some of the pumps I've been looking at are rated at higher than I need pressures or flow rate, etc I can't be choosy about these specs as long as it's a pressure compensated pump right? I'm hesitant on choosing pumps that are overly powerful for what I need since that'll...