PDA

View Full Version : Tell me about mower blades. Low lift, high lift, gators etc


apples017
01-15-2011, 06:25 AM
So my biggest question is regarding engine hp and or rpm.

1. If I have a low lift blade will the engine hold it's rev's better in thick grass compared to using high lifts?

2. Will high lifts cause blow out around the deck, ie on the other side?


My thinking is that a high lift blade will throw the grass out of the deck better, which will allow the cutting edge to be exposed quicker, therefore you drive faster etc. But I'm now thinking that a low lift blade may have reduced wind drag purely from the tang on the end being smaller with lower lift.

Would this higher tang part make much difference to engine rpm etc?

We have had a **** load of rain and the grass is starting to go bonkers. The native couch is really, really thick down the back and the old girl is really bogging down in it.

My blades are high lifts and I have bend them up even further. Fantastic for throwing the grass into the rear catcher. But I guess every thing is a compromise right.... Because the blades are now really really high lifts, I feel that this has caused a loss in cutting power, and is also causing the blow out of grass.

What do you all think.

And what about gator blades.

What is this double blade talk?

Peter
Australia

Roger
01-15-2011, 07:35 AM
Yes, low lift blades will require less power to drive them. Discharge force will be less, meaning a potential poor clipping distribution, and unable to load bagger.

However, the quality of cut will most likely be much poorer. In my experience, the lower lift blades leave many stringers. My lawns are cool weather grasses, ones that will grow very well in the Spring. With the heavy growth, the mower will go through the tall growth, but the outcome is unacceptable in terms of quality.

The higher lift blades will lift the grass better for cutting. This means more of the grass will be cut off, and the final cut surface will be smoother. For me, that is important.

Mulching blades have a lesser lift, as these blades are intended to recut clippings and have them fall back to the ground. Using a high lift with mulch kit will not work, as the clippings will be kept under the deck too long, being held against the upper surface of the deck. The operation can come to a halt because the deck is too badly clogged with clippings -- not enough debris has been allowed to drop out from under the deck.

I don't know what mower you are using. I have two hand mowers, an Exmark w/b and John Deere ZTR. I use quad-cut blades on the Honda hand mower, high lift on the Toro Proline hand mower, and high lift blades on the w/b and ZTR for grass. I do use Gator blades on the w/b and ZTR during leaf mulching season in the Fall.

I'm sure your seasons are much different than mine, mowing starts about April 1, and ends near the end of November, sometimes as early as end of October for poorer lawns. My heavy growth period is between April 15 and June 15 (roughly), but may also have another period in the Fall (Sept 10 to Oct 15), depending upon weather.

Remember, conditions vary so widely because of type of grass and growth rates that what works for one LCO does not work very well for another. You will have to experiment to learn what works best for your conditions.

exmark user
01-15-2011, 09:27 AM
Never use Gator Blades!!!!!!!!

They cut horrible!!!!!!!!!!

ALC-GregH
01-15-2011, 09:32 AM
Never use Gator Blades!!!!!!!!

They cut horrible!!!!!!!!!!

Really?

I had very different results. I love them on my Scag.

Roger
01-15-2011, 09:40 AM
....

Remember, conditions vary so widely because of type of grass and growth rates that what works for one LCO does not work very well for another. You will have to experiment to learn what works best for your conditions.

Never use Gator Blades!!!!!!!!

They cut horrible!!!!!!!!!!

Really?

I had very different results. I love them on my Scag.

Statement confirmed in only two posts! Thank you.

exmark user
01-15-2011, 09:43 AM
The blades on my scag cut horrible with gators, probaly our type of grass and soil in tn
(when i had a scag)

That piece

walker-talker
01-15-2011, 09:46 AM
I have a 23hp/52" wright sentar. I put on some Extra high lifts and the engine just can hardly handle cutting grass. It's not has bad mowing weekly accounts, but as far as bi-weekly accounts, forget about it.

Pennington Lawncare
01-15-2011, 10:10 AM
The high lift G6 Gator blades by Oregon will be the only type of blade that I buy from now on for my Bob-Cat. The cut quality is better with the front mulching baffle in place though.

ShooterK2
01-15-2011, 10:48 AM
I have a Scag walk-behind and a Bob-Cat walk behind, and have always run the stock blades on both. They are high-lifts on the Bob-Cat and medium-lift on the Scag. I have mostly Bermuda lawns here, and I bag a fair amount of grass. They both work well, but I prefer the Bob-Cat with the high-lifts for bagging and making a yard look really clean. I suppose I should play around with other types of blades and see if I like anything else.
Posted via Mobile Device

BINKY1902
01-15-2011, 12:58 PM
I like high lift gators in early spring when there are still some leaves and weeds. I leave my mulch kit on normally for the first month of the cutting season, because there is more presence of debris. Then I put on regular high-lifts and start discarging. High lifts do require more engine power, but are a must around here to pick up the bahia.

gasracer
01-15-2011, 01:42 PM
I run high lifts and only use gators for mulching leaves.

grassman177
01-15-2011, 02:51 PM
we like gators in early spring first cuts and all fall long to chop up leaves. really helps cut down the amount for bagging them if you run over them a couple of times, it usually mulches them up very well.

in thick growth, we like medium lift blades as they still deliver a clean cut but dot pack the grass as much under the deck. this of course will depend on brand of mower.

then in late spring and summer we like the higher lift blades.

SouthSide Cutter
01-15-2011, 07:45 PM
About midway in the season I put a med lift on the left side, a high lift in the middle and a high lift gator on the right. Really worked good for me and looked good. went back to al gators in the fall. When running all high lifts better have some hp.

grassman177
01-16-2011, 01:00 AM
that is a very odd set up southside cutter.

what deck and size was that run on?

SouthSide Cutter
01-16-2011, 09:58 AM
61 Velocity, wasn't my Idea. Was my local mechanic who runs a repair shop and worked for a Scag dealer before. Doesn't take as much power as running all high lifts. But does a better job than all med lifts.