IMPBA D4 P-Limited Guidelines for 2015

[DPeterson]

I spent a couple seasons experimenting with the 1800 in a mono, a tunnel and a cat. I just couldn't find a prop that the 1800 liked. Played with 447's up to 452's even. 2 blades and 3. It did seem that when I was finding a nice match speed wise the hull didn't like the prop size. Most all of my testing was during race days and I eventually got tired of beating myself so I gave up. Never thought to try the 1500.

Other than the 1500 I did due diligence on the 1800 and the 2030 before jumping ship. I can rest easy.

[Darin Jordan]

Just keep in mind that, when trying to find a "match" for the AQ2030, you are really looking for a match for an 1865... Unless you found a magic batch that were somehow actually over 1900KV... I've never, ever, tested one that was more than 1865... though, I seem to recall that, when we FIRST started using these, I tested a couple and they were 1930KV or so...

The actual KV explains why people are able to run an x447 on a "2030KV" motor...

[ray schrauwen]

If the 2030 was actuall 1865 then, what was the 1800??... 1800?

Just keep in mind that, when trying to find a "match" for the AQ2030, you are really looking for a match for an 1865... Unless you found a magic batch that were somehow actually over 1900KV... I've never, ever, tested one that was more than 1865... though, I seem to recall that, when we FIRST started using these, I tested a couple and they were 1930KV or so...

The actual KV explains why people are able to run an x447 on a "2030KV" motor...

[Darin Jordan]

I THOUGHT we had some "higher KV" UL-1s at some point... Turns out I did test some...

1943 for the originals
1921 for a new one from around 2010

For the 1800... it was 1769KV....

Here are some test results I did back in 2010 when the AQ1800 was first being offered showing this data.

I have no idea what they are these days, other than the three AQ2030s I have now are all in the 1865KV range... Maybe I'll take the time to go back and retest, just to verify again. Or, maybe I don't care... Indifference is way more relaxing...

AQ1800_and_2030_Motors.jpg

[Doby]

This thread is starting to "drift" towards Dougie's favorite topic.....

[Darin Jordan]

This thread is starting to "drift" towards Dougie's favorite topic.....

Naw... Just wanted to help provide whatever data might be helpful in selecting a group of compatible motors. You gotta know what you have before you can know what you want.

[RandyatBBY]

I THOUGHT we had some "higher KV" UL-1s at some point... Turns out I did test some...

1943 for the originals
1921 for a new one from around 2010

For the 1800... it was 1769KV....

Here are some test results I did back in 2010 when the AQ1800 was first being offered showing this data.

I have no idea what they are these days, other than the three AQ2030s I have now are all in the 1865KV range... Maybe I'll take the time to go back and retest, just to verify again. Or, maybe I don't care... Indifference is way more relaxing...

[ATTACH=CONFIG]125412[/ATTACH]

JFMI What did you do the testing with to get those numbers? What tool or electronic device?

[DPeterson]

Exactly why you can not use manufacture listed information on motors to develop an approved list. Even after knowing about the varience it happend anyway. The root cause of the spec classes becoming a one motor problem.

LOL Doby - spec motor issues are in my rear view mirror.

[Steven Vaccaro]

Looks like some well intended moves in a good direction.

what happens when guys start competing with tp3630 motors. First off, it will most likely move everyone from the aquacraft and proboat motors. No big deal.

Next Im interested in what happens when guys start pushing the tp harder than intended. Probably failed esc's. So then the esc's will be pointed at as the blame in the system.

[rayzerdesigns]

it doesn't matter what motor you test..you can test 2 to 500 of the same motor..they will all be different..its just how they are..some will be way better than others..some way worse..

[Darin Jordan]

Looks like some well intended moves in a good direction.

what happens when guys start competing with tp3630 motors. First off, it will most likely move everyone from the aquacraft and proboat motors. No big deal.

Next Im interested in what happens when guys start pushing the tp harder than intended. Probably failed esc's. So then the esc's will be pointed at as the blame in the system.

At some point... people will finally get that this is RACING, and all of this is the natural cycle of things. If they'd get it sooner, the bitching would likely be WAY less frequent...

Then again... maybe not...

[DPeterson]

Hi Steve

Already tried to push the TP beyond it's limits. Threw on some big props and ran it longer than I should have. Every time I did so the boat slowed significantly. Tell tale sign the set up was wrong. Motor came back 160 deg. Smelled warm. No melt down. Acted as a governer and not a fuse. Turnigy 120 was fine. I am sure testing and pushing experiences will vary.

[Steven Vaccaro]

Hi Steve

Already tried to push the TP beyond it's limits. Threw on some big props and ran it longer than I should have. Every time I did so the boat slowed significantly. Tell tale sign the set up was wrong. Motor came back 160 deg. Smelled warm. No melt down. Acted as a governer and not a fuse. Turnigy 120 was fine. I am sure testing and pushing experiences will vary.

sounds promising.

[ray schrauwen]

I'll take one of these motors if you do another round Doug. It's nice to try other options.

[DPeterson]

Hey Ray
I will probably put in one more volume order after the first of the year. Then that will be it for me. Don't wish to be in the motor business.

Got some surrounding clubs and districts interested in following along. I'll have an inventory of motors for them.

Doug