Hayrake Speed Question

Traditional Farmer · Jul 28, 2016

Two almost identical NH 256 ground driven rakes both being pulled 4MPH rake #1 has 30 inch diameter tires measured outside to outside and rake #2 has 26 inch tires measured outside to outside.
Will the reel turn faster on #1 rake or #2 rake or will the reel turn the same on both?

Steve in VA · Jul 28, 2016

Assuming that the drive systems are the same, rake #1 will turn slower. In order to turn 1 revolution, the wheel has to travel 94.2"but rake #2 with the smaller diameter wheel accomplishes the same revolution in 81.7". So, if the relationship from the wheels inwards are the same, rake #2 will turn faster.

Glen SW Wi · Jul 28, 2016

Is the gearing from the wheel to the driven gear the same?

Steve in VA · Jul 28, 2016

Yeah, I was concerned about the "almost" identical part. One tooth more or less makes a big difference. Based simply on tire diameter we're only 14% delta.

Pair-a-dice farm · Jul 28, 2016

If the tire size is the only difference then #1 will turn the reel a little slower but it may not be enough to notice.

Traditional Farmer · Jul 28, 2016

They're the same

Steve in VA · Jul 28, 2016

OK. Why?

Steve in VA · Jul 28, 2016

OOOPs. I read your comment as related to the ground speed but on reread it looks like you're referring to the drive line. My apologies. Read fast; typed faster.

So, if identical drive lines with the only variant being the tire diameter, I stand by my original calcs.

Sorry.

fixerupper · Jul 28, 2016

A smaller wheel makes more revolutions to go the same distance as a larger wheel, so the rake will make more revs too.

Traditional Farmer · Jul 28, 2016

Thanks for the answers confirms what I thought I was seeing with my rakes.I've been using the rake with the smaller tires and just got this other NH rake with larger tires same gearboxes on both and it seemed to me the reel was turning slower.I have to replace the tires anyway so I'm going with the size I have on my original rake.

Hayrake Speed Question

Traditional Farmer

Well-known Member

Steve in VA

Well-known Member

Glen SW Wi

Member

Steve in VA

Well-known Member

Pair-a-dice farm

Well-known Member

Traditional Farmer

Well-known Member

Steve in VA

Well-known Member

Steve in VA

Well-known Member

fixerupper

Well-known Member

Traditional Farmer

Well-known Member

Similar threads