S k a t e L o g     F o r u m
Inline Skating and Quad Roller Skating
Forum Hosts: Jessica Wright | Kathie Fry

FOLLOW US: Our Blog | Facebook | Twitter | Email    


Home - Forum Index - Africa Skating - Asia Skating - Europe Skating - Oceania Skating - Pan America Skating - Roller_Rinks - Friend the SkateLog Forum in Facebook - SkateLog Forum on Facebook

Forum Administrators: Jessica Wright and Kathie Fry | Email Us
Access code for buying and selling subforums: "skates"
How To Get a User Account and Posting Privileges in the SkateLog Forum
Use Google to Search the SkateLog Forum

Go Back   SkateLog Forum > Special Interest Skating Forums (sorted by number of posts) > Quad Roller Skating Forum
FAQ Calendar Search Today's Posts Mark Forums Read

Quad Roller Skating Forum Discussions about quad roller skates and any other quad skating discussions that do not seem appropriate for one of our other forums.

Reply
 
Thread Tools Display Modes
Old September 1st, 2008, 05:53 AM   #1
Madcow
Senior Member
 
Madcow's Avatar
 
Join Date: Nov 2007
Location: Phoenix Az
Posts: 685
Thumbs down Powerdyne Plates

Went skating tonight with a friend he has Powerdyne Dynapro plates.
The only thing I can say about them is, I would never buy or recommend them to anyone.

He's had the plates about 7 months & has had some cushions split, that wasn't a big deal because I gave him 4 sets of new cushions I don't need.

Tonight he turn around backward & bit it good "hit his head on the floor" when he got up his skates didn't feel right.

When we looked closer at his skates this is what we found.

By madkaw

By madkaw
__________________
Bill
Madcow is offline   Reply With Quote
Old September 1st, 2008, 08:42 AM   #2
Fragboy
Multicoloured wheeler
 
Fragboy's Avatar
 
Join Date: Jul 2008
Location: Glasgow Scotland
Posts: 60
Default EEK!!!

Hope his head is ok.

Never had a truck fail ever...my skates and skateboard trucks were always ok (as was everything else luckily enough) and that was bowl/ramp riding and street too...that seems pretty bad for a not very old and not cheap piece of kit.
__________________
Funky speed freak Scot
Fragboy is offline   Reply With Quote
Old September 1st, 2008, 03:04 PM   #3
athos
Senior Member
 
athos's Avatar
 
Join Date: Apr 2008
Posts: 203
Default

A guy showed me the exact same break a couple of weeks ago at a rink. Not a good sign.
athos is offline   Reply With Quote
Old September 1st, 2008, 03:15 PM   #4
Stitches
I<3 Skating!
 
Stitches's Avatar
 
Join Date: Jun 2008
Location: Lake Champlain Vermont
Posts: 653
Default

Guess that's why they call them DynaPoop around here?
__________________
Death by Roxy
Bont Derby Leather/ White Magnum
Riedell 595/Navigator - Extra: Oberhamer 351 sz 8
Stitches is offline   Reply With Quote
Old September 1st, 2008, 03:21 PM   #5
8-Ball
CERTIFIED ANTI CRONIE!!!!
 
Join Date: Sep 2006
Location: Frozen Tundra..
Posts: 3,848
Default DynaPoop

Yep.. those be the dynapoop signature break..

I have seen it myself before as well.

THOUGH i have to ask... why does he have a jump bar on there.... I would FIRST say that .. it may have had something to do with the break.. since that top cup did not sit perfectly on the cushion..but I have seen that exact break before with out the jump bar.

People think they are saving money.. getting a AL plate.. and saving 100 dollars on a Reactor..but they are NOT getting Reactors lil brother.. they are getting the dirty ole uncle that belongs locked in a shoe box..
8-Ball is offline   Reply With Quote
Old September 1st, 2008, 03:41 PM   #6
Sonrisa
Scared to skate backward
 
Sonrisa's Avatar
 
Join Date: Jan 2008
Location: Sacramento, Ca
Posts: 165
Default

The same exact thing happened a few months back at my rink. Someone had Dynapro and I would guess he weighed about 150lbs wet. He went up on his toes to do a toe spin/grapevine and ate it hard. We went to look and sure enough, his front left truck split in two like those pictures.

Luckily he was just a little bruised on his knees and nothing more serious. Stay away from Dynapro!
Sonrisa is offline   Reply With Quote
Old September 1st, 2008, 03:44 PM   #7
likkwid
likkwid
 
likkwid's Avatar
 
Join Date: Mar 2008
Posts: 229
Default

they need to take everything off the market BUT the reactor...

everything else they make is garbage.
likkwid is offline   Reply With Quote
Old September 10th, 2009, 03:44 AM   #8
Holiday Guy
Doing It Old School
 
Holiday Guy's Avatar
 
Join Date: Feb 2009
Location: New Jersey
Posts: 2,524
Default

I will stay faraway from a Dynapoop and stick with Snyder for now.
__________________
[LET THE GOOD TIMES ROLL] [ JERSEY SHUFFLER][FRIEND OF THE DRAGON CREW]
Holiday Guy is offline   Reply With Quote
Old September 10th, 2009, 03:53 AM   #9
prozoo
Member
 
prozoo's Avatar
 
Join Date: Mar 2008
Location: S. Alabama
Posts: 69
Default

Hey Holiday, love your Goldtop...Sorry for being off topic, just saying that's a nice LP.
prozoo is offline   Reply With Quote
Old September 10th, 2009, 01:23 PM   #10
Gle8
I'm Contrary. Moo.
 
Gle8's Avatar
 
Join Date: Aug 2007
Location: Philly
Posts: 2,427
Default

I wouldn't skate a dynapoop even if it came with a 200HP motor. Well, maybe then, but no less than 200HP.
__________________
-I count points.
Gle8 is offline   Reply With Quote
Old September 10th, 2009, 07:03 PM   #11
niteridr95
Senior Member
 
niteridr95's Avatar
 
Join Date: Dec 2008
Location: akron, OH
Posts: 2,758
Default

Quote:
Originally Posted by Gle8 View Post
I wouldn't skate a dynapoop even if it came with a 200HP motor. Well, maybe then, but no less than 200HP.
ok now your asking to fall... a plate that breaks easly and now you want 200hp on it?? for some reason i think youll get up to speed and then have the worst fall ever
__________________
My Home: Springfield Lake Roller Rink
http://www.springfieldlakerollerrink.com/
niteridr95 is offline   Reply With Quote
Old September 10th, 2009, 11:58 PM   #12
Jinx
Senior Member
 
Jinx's Avatar
 
Join Date: Jun 2009
Location: Seattle,wa
Posts: 349
Default

Sorry to hyjack but i was curious since there was talk about the xk4's.. are they pretty heavy plate in general? I've been wondering when considering what plate to put on my next build.. (was leaning towards a pro-line driver, or possibly a navigator) but currently am on an XK4 with some 'classics' trucks.. Was just wondering if i'd notice a weight increase or decrease... Never did find out just how heavy an XK4 is...
Jinx is offline   Reply With Quote
Old September 10th, 2009, 03:55 PM   #13
Holiday Guy
Doing It Old School
 
Holiday Guy's Avatar
 
Join Date: Feb 2009
Location: New Jersey
Posts: 2,524
Default

Quote:
Originally Posted by prozoo View Post
Hey Holiday, love your Goldtop...Sorry for being off topic, just saying that's a nice LP.
Thank you
__________________
[LET THE GOOD TIMES ROLL] [ JERSEY SHUFFLER][FRIEND OF THE DRAGON CREW]
Holiday Guy is offline   Reply With Quote
Old April 30th, 2011, 06:35 PM   #14
Armadillo
Senior Member
 
Armadillo's Avatar
 
Join Date: Apr 2008
Location: Chicago, Near the Lake
Posts: 6,537
Default Truck WILL break when suspension is screwed up too tight

Quote:
Originally Posted by Madcow View Post
Went skating tonight with a friend he has Powerdyne Dynapro plates.
The only thing I can say about them is, I would never buy or recommend them to anyone.

He's had the plates about 7 months & has had some cushions split, that wasn't a big deal because I gave him 4 sets of new cushions I don't need.

Tonight he turn around backward & bit it good "hit his head on the floor" when he got up his skates didn't feel right.

When we looked closer at his skates this is what we found.

By madkaw

By madkaw
From these PICs it is obvious that the cause of the truck breaking had little to do with the truck. TOO MUCH FORCE was applied to the the truck because the suspension was cranked down WAY TOO TIGHT.
Just look at how little space there is between the truck lip and the retainer lip. On a sharp turn, assuming the cushion could even flex enough, the truck and retainer were probably banging into each other, and overstressing the truck platform.
Either those cushions have been CRUSHED TO DEATH and are now too short to work properly, or they were too short in the first place. If there is not enough urethane in the kingpin suspension stack of H/W then the suspension is not going to function properly, and some parts will receive excess stress. I suggest scrapping the retainers and just use washers instead. These skates will turn more freely with washers, and the trucks will not have to take as much punishment.

-Armadillo
__________________
Rollin' on AIR
Armadillo is offline   Reply With Quote
Old April 30th, 2011, 06:53 PM   #15
Salamanda
Senior Member
 
Salamanda's Avatar
 
Join Date: Mar 2010
Location: UK
Posts: 2,382
Default

Looking at the picture there doesn't seem to be much kingpin to attach the nut to. Maybe the suspension was cranked down because it had to be because there wasn't enough kingpin. I noticed something similar on some dynapros belonging to a friend when I was swapping over her stock cushions to some SG ones.
Salamanda is offline   Reply With Quote
Old April 30th, 2011, 07:33 PM   #16
Sidewinder
UFO
 
Sidewinder's Avatar
 
Join Date: Jan 2010
Location: Museum of Art
Posts: 2,965
Default

For once I agree with Dillo. I think after working on both the stock PD cushions, then to rubber and putting them through a full break in and then to the Magic ones (they have little leprechauns in them), most are way too tight and there isn't enough kingpin to run way too loose and not lose either the pivot pin from the cup or snap something else.

Anyone who is on stock PD cushions should replace them immediately if not sooner in my opinion. 200+ need to be on yellow, ~160-200 on orange, less than that on red. It is worth the 20 dollars.
Sidewinder is offline   Reply With Quote
Old April 30th, 2011, 07:50 PM   #17
Armadillo
Senior Member
 
Armadillo's Avatar
 
Join Date: Apr 2008
Location: Chicago, Near the Lake
Posts: 6,537
Default

DOcSk8 posted in a different thread about how urethane rubber does NOT really compress much. It just gets flexed and squirms around moving away from the pressure. When the cushions get totally surrounded by truck+lips and retainers+lips, and there is too little room left for them to squirm away from the pressure applied. This causes the forces to build up to higher levels than normal, and sooner or later, something is going to break.

Cushions need some BREATHING ROOM around them so that they can flex and deform properly. Too much containment of your cushions is BAD. This is why I no longer use retainers. Laser Skate Co. states that replacing retainers with washers frees up the action by about 20%. This means that it takes ~20% less force to reach the same degree of turn angle.
Freedom of Action!
-Armadillo
__________________
Rollin' on AIR

Last edited by Armadillo; May 1st, 2011 at 01:17 AM.
Armadillo is offline   Reply With Quote
Old April 30th, 2011, 07:56 PM   #18
Salamanda
Senior Member
 
Salamanda's Avatar
 
Join Date: Mar 2010
Location: UK
Posts: 2,382
Default

Even with no retainers or washers I would have had difficulty getting the king pin nut back on. They are too damn short
Salamanda is offline   Reply With Quote
Old April 30th, 2011, 09:15 PM   #19
cass38a
Senior Member
 
cass38a's Avatar
 
Join Date: Aug 2008
Location: Newcastle NSW, Australia
Posts: 3,653
Default

Quote:
Originally Posted by Armadillo View Post
This causes the forces to build up to higher levels than normal, and sooner or later, something is going to break.

-Armadillo

This only applies to crappy skates. There is thousands of skaters using rock hard cushions cranked down real hard in all sorts of plates, plastic and metal (think of all those rentals out there) whos trucks never snap like that.

Swapping out the cushions may reduce the likelhood of it happening but if the plates were well made then this would not be necessary.
cass38a is offline   Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT. The time now is 11:19 AM.


Powered by vBulletin® Version 3.8.4
Copyright ©2000 - 2018, Jelsoft Enterprises Ltd.