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EB Mods PP-1 Back plate for O.S. Speed Engines?

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EB Mods PP-1 Back plate for O.S. Speed Engines?

Old 08-17-2020, 08:07 AM
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Default EB Mods PP-1 Back plate for O.S. Speed Engines?

Hi,
I bought one of these a long time ago. Has anyone had experience with it?
Thoughts much appreciated.
Cheers,
Mac


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Old 08-17-2020, 11:22 AM
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A friend did try a one on one test at the track on a same engine. He did not notice a thing. I know AMR posted recently a pictue of a dyno graph with a normal and that backplate and with that one showed a slight higher graph but the difference could also be shown with 2 tests behind each other on a same backplate, that small was the difference.
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Old 08-19-2020, 11:28 AM
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There have been a few variations of the same theme. This one from Capricorn ONE engines (also O.S. based). I tried one and again I couldn't tell the difference on track although there was a possibility it generated a tiny bit more runtime but I'm talking a few seconds only which could just have been a difference in driving run to run so I'm not putting that down to the back plate and so isn't worth the 42 euros to me.....

https://capricornrc.com/capricorn/en...ate-21-cc.html
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Old 08-26-2020, 03:46 PM
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Funny thing is that XRD has introduced a motor which has sadard such a backplate.

This week I was modding 2 engines for a guy who likes modified engines and all kind of special stuff, I haven't touched my machines for a while so I thought to make such a backplate for that guy his Picco Boost, I must say for a 1st attempt these backplates ar easy to make....






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Old 08-26-2020, 07:27 PM
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Originally Posted by Roelof View Post
Funny thing is that XRD has introduced a motor which has sadard such a backplate.

This week I was modding 2 engines for a guy who likes modified engines and all kind of special stuff, I haven't touched my machines for a while so I thought to make such a backplate for that guy his Picco Boost, I must say for a 1st attempt these backplates ar easy to make....





nice work man. These must be for nitro mike, hes got a nice following on your tube, nice kid with good vids and speaks super, super highly of your work. Good stuff!
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Old 10-04-2020, 05:42 PM
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Hi! New to the site... Just curious as to what is the purpose of this mod? What can one hope from having this done? Just asking for my own curiosity. Thanks in advance..
Oh and don't mind that the join date says 2006.. I did join then life got in the way.. Long story and very boring.. Thanks..
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Old 10-04-2020, 05:53 PM
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Meet too
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Old 10-05-2020, 02:29 AM
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The backplates can be -as mentioned- bought at AMR https://amrengines.com/shop?olsPage=...os-speed-b2101

AMR did show a Dyno with and w/o the ported plate and on the dyno there is a small improvement shown. In real life most people do not notice a thing.

What it does is giving a better flow into the side transfer channels:


But when the piston goes down there is a huge pressure build up that all the mixture will find its way to all the channels available.
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Old 10-05-2020, 11:47 AM
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So are these type of backplates worth it in any sense?
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Old 10-05-2020, 02:26 PM
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If you are a perfect driver needing to shave off 0.1 sec a lap, then this could be the answer.
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Old 10-16-2020, 05:58 AM
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I like the AMR backplates, and wouldn't take them off my engines. I think the the engine runs better and seems to have a wider sweetspot without tuning it to the very edge. IMO, they are worth the money.

Originally Posted by petersen114 View Post
So are these type of backplates worth it in any sense?
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Old 10-16-2020, 06:49 AM
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Originally Posted by jpeck View Post
I like the AMR backplates, and wouldn't take them off my engines. I think the the engine runs better and seems to have a wider sweetspot without tuning it to the very edge. IMO, they are worth the money.
You can only be right about your feeling when you are on the track and run a session with the AMR and a session w/ith the normal backplate
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Old 10-17-2020, 01:26 PM
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Originally Posted by Roelof View Post
You can only be right about your feeling when you are on the track and run a session with the AMR and a session w/ith the normal backplate
Roelof, thats pretty much what I am saying. That opinion, and feeling, is based on 20+ years of racing and running engines without the modified backplates. In other words, the AMR backplates will stay on my engines.
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Old 10-19-2020, 10:31 PM
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If someone knows how 2 stroke engines works-will know, this backplate is profit generator, not power.
If someone really interesting what this "modification" will really do, just create (may be reverse enginring) 3D model of engine and see where those two streams will "shoot". And IO can assure, there will be no streams to begin with. Again, try to understand how two stroke engines with Schnuerle scavenging work-will save a lot of time and money. Instead invest on track time.
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Old 10-19-2020, 10:54 PM
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Originally Posted by petersen114 View Post
So are these type of backplates worth it in any sense?
Nope, nada, zero, waist of your hard earning money.
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