[[email protected]]

Did some testing yesterday afternoon with the Ace for everyone wondering how fast it is. Used a GTech Pro to do the testing and it was all performed in high gear on flat pavement and about 75 degrees out; 210lbs driver. (FYI, this particular GTech has been tested against DriftBox and track timers and is pretty darn accurate) I'll be posting up some dyno numbers tonight and hopefully a video if all goes well. These are our personal baseline numbers before we throw some boost to this thing so results may vary

0-10 mph in 1.115 seconds
0-20 mph in 2.194 seconds
0-30 mph in 4.372 seconds
0-40 mph in 8.022 seconds

60ft. in 2.869 seconds @ 23.0 mph

330ft in 8.354 seconds @ 40.9 mph

1/8th mile in 13.355 seconds @ 46.32 mph

top speed attained was 53 mph flat out at 8450rpm's

 

[Fly]

Thanks TMS. Everybody will no doubt appreciate your efforts !

 

[Vankemp]

"All". Those numbers look good to me..

 

[whatwasithinkin]

Hey great info. How many miles were on the engine for this test.

 

[[email protected]]

Hey great info. How many miles were on the engine for this test.

5 miles and .9hrs

 

[polarmud]

0-30mph is very respectable. But 0-40 leaves me scratching my head a little.


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[[email protected]]

it drops off big time after 30mph. As expected with little power

 

[whatwasithinkin]

5 miles and .9hrs

Aww okay. Im thinking it will pick up some after its broken in. Always been my experience that 4 strokes don't start really hitting their stride until after a few hundred miles +/- on them. Also makes me wonder if Polaris builds in any sort of recalibration into their black box. I haven't seen any info on this, but many power sport manufactures do have a "break in chip" that more or less forces brand new machines to not run at their full potential until the engine seats for protection.

 

[1Hdslider]

Did some testing yesterday afternoon with the Ace for everyone wondering how fast it is. Used a GTech Pro to do the testing and it was all performed in high gear on flat pavement and about 75 degrees out; 210lbs driver. (FYI, this particular GTech has been tested against DriftBox and track timers and is pretty darn accurate) I'll be posting up some dyno numbers tonight and hopefully a video if all goes well. These are our personal baseline numbers before we throw some boost to this thing so results may vary

0-10 mph in 1.115 seconds
0-20 mph in 2.194 seconds
0-30 mph in 4.372 seconds
0-40 mph in 8.022 seconds

60ft. in 2.869 seconds @ 23.0 mph

330ft in 8.354 seconds @ 40.9 mph

1/8th mile in 13.355 seconds @ 46.32 mph

top speed attained was 53 mph flat out at 8450rpm's

I dont think there holding it back. 8,450 RPM.S

 

[4Nines]

This is a nice baseline. Do you happen to have any RZRs around that you could do the same tests with to compare?

 

[whatwasithinkin]

I dont think there holding it back. 8,450 RPM.S

No surprise with a brand new engine to see high RPM as they haven't built up a lot of back pressure. 8450 RPM's is really high. But as the piston rings seat in, it should build up more pressure, increasing torque and lowering top RPM's. And they may not have anything built in as I suggested some companies do to protect the engine in its initial break in period. Its seen quite often on current snowmobiles to help protect the engine from someone holding to the pin brand new with no miles, out on the trail.

 

[[email protected]]

i could probably get ahold of an 800 if I really needed to. If all goes well with this machine were going to step up to a RZR.

 

[[email protected]]

No surprise with a brand new engine to see high RPM as they haven't built up a lot of back pressure. 8450 RPM's is really high. But as the piston rings seat in, it should build up more pressure, increasing torque and lowering top RPM's. And they may not have anything built in as I suggested some companies do to protect the engine in its initial break in period. Its seen quite often on current snowmobiles to help protect the engine from someone holding to the pin brand new with no miles, out on the trail.

There is a break in procedure you're "supposed to follow" as listed in the user manual.

 

[[email protected]]

Strapped it down to the dyno this afternoon. Keep in mind this is an automotive unit with big rollers so this machine struggles quite a bit with it but, nonetheless, we've got a pretty solid baseline to work with. Attempted to get some wideband fuel readings with a tailpipe sniffer but no success. Reading was all over the place. tomorrow i'll work on getting a sample tube welded into the midpipe so we can get some steady fuel numbers without shrouding the exhaust flow.
View attachment 215 View attachment 216

 

[whatwasithinkin]

Wow cool stuff. Thanks for this.

That's 24 HP at the rear wheels on the chart? At only 17MPH? Only reason I bring this up, is that Polaris says the engine puts out 34 +/- HP and I can see many of the haters taking your info posted here and running wild with it completely out of context on other forums. As most people don't know the difference between crankshaft and rear wheel HP and love to confuse the issue with them.

 

[1Hdslider]

They claim 32 at crankshaft. So tad over 24 on a big drum dyno,not bad rear wheel hp.

 

[[email protected]]

Yeah. Around 20% loss to tire. Big drum was causing this thing to drag on mph quite a bit. I stopped about 7200rpm because power was clearly dropping off at that point. Numbers will probably vary. This is for my own use. I have access to a smaller roller dyno that I might try to use this weekend to see what different numbers I come up with.

 

[1Hdslider]

Yeah. Around 20% loss to tire. Big drum was causing this thing to drag on mph quite a bit. I stopped about 7200rpm because power was clearly dropping off at that point. Numbers will probably vary. This is for my own use. I have access to a smaller roller dyno that I might try to use this weekend to see what different numbers I come up with.

I believe that will be a much better test. LMK Thanks Paul

 

[4Nines]

Great baseline for mods! Can't wait to see what bolt-ons make a power difference and how much.

 

[Fly]

Please do. Many will benefit from your efforts as you're the very first and the " best " results are important. People will be very grateful to you.