5 replies to this topic

[cyberpez]

Hi there,  been working on a couple different vp10 tables and am running into a weird physics issue.  Most are conversions of vp9 tables.  For the most part happy with my physics tweaking on them...  ball feels heavy bounces off rubbers well.....  But I get what seems to be excessive backspin sometime.  I notice is the most at the top of rubbers or outlane posts the ball will roll down the lane a bit then spins back up the rubber and around.  It doesn't happen all the time, but enough to bring it up.  I also see it when you hit a target(wall) or a rubber post straight on..  the ball sorta spins for a second in place then bounces back.  In general I'm using the settings bellow for things.  I've tried different physics settings(by try I mean copied others settings) and can't really shake it...  not sure If I'm missing a setting somewhere or have a setting way out of whack.  Thanks for the tips!!!

 

 

Attached Files

•  backspin.png   19.51KB   5 downloads
•  physics settings.png   62.25KB   5 downloads

[Knorr]

Try to lower the height of the rubbers. I would also lower the friction on the most parts. 0.3 is fine and the ball has a chance to stop spinning. You can increase it slowly later...

Edited by Knorr, 09 October 2015 - 03:01 PM.

[gtxjoe]

Playfield friction is set to .9.  This will cause a lot of ballspin

 

 

From the wiki, the initial recommendation is much lower .08 to .1.  Most of the tables are using even lower than that - I looked a a few vpx tables and highest I saw was .05 and lowest was .025

https://github.com/c...ki/VP10-Physics

Edited by gtxjoe, 09 October 2015 - 03:17 PM.

[BorgDog]

Also, make sure primitives are set to toy if you aren't actually using them for collisions, wierd things will happen and I've seen it actually be the cause of a similar behavior to yours before.

[cyberpez]

Thanks everyone for the tips, I had been raising the friction to slow the ball down / make it feel heavier.  I'll play around with the lower settings a bit more...  a few quick tests and I've not seen the backspin issue yet.

 

gtxjoe, thanks for the link to the wiki I'd not seen it before, lots of good info!!

[gtxjoe]

Slowing the ball down. Try reducing the flipper strength and table slope