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R/C Tech Forums (https://www.rctech.net/forum/)
-   Offroad Nitro Engine Forum (https://www.rctech.net/forum/offroad-nitro-engine-forum-157/)
-   -   ATOM engines thread (https://www.rctech.net/forum/offroad-nitro-engine-forum/770386-atom-engines-thread.html)

VPProUSA 12-15-2017 11:13 AM
Review:
https://youtu.be/0R-8HVmBikA

pballer2777 03-21-2018 06:16 AM
now that this engine has been out for a bit is there anymore feedback?

puckaroos 04-30-2018 05:24 PM
I bought one today for my b3 buggy, will post feedback once I get it broken in.

shearpin 08-09-2018 08:11 AM
Anyone run this in a truggy? What are you using or would you recommend for a pipe?

VPProUSA 08-09-2018 08:15 AM
Originally Posted by shearpin (Post 15276459)
Anyone run this in a truggy? What are you using or would you recommend for a pipe?
An OS 2090 or Nova 9901 work best. A 2058 or Atom pipe will work in truggy if bottom is all you need. With any of those pipes, use a long header for truggy, it creates way more bottom on this engine. I used a Nova 41020 on my truggy with both nova and os pipes. The OS was a little better I think but they were close.

floss 08-09-2018 08:56 PM
Originally Posted by VPProUSA (Post 15276462)
An OS 2090 or Nova 9901 work best. A 2058 or Atom pipe will work in truggy if bottom is all you need. With any of those pipes, use a long header for truggy, it creates way more bottom on this engine. I used a Nova 41020 on my truggy with both nova and os pipes. The OS was a little better I think but they were close.
What about buggy , which pipe is a good starter for smooth power delivery

VPProUSA 08-10-2018 06:03 AM
Originally Posted by floss (Post 15276816)
What about buggy , which pipe is a good starter for smooth power delivery
An OS 2090 or Nova 9901 but with the standard header.

mebolson 10-06-2019 08:50 AM
If anyone is interested, I carry the Atom SV-1R engines, broke-in by Adam Drake.
E

deadmancourt 11-10-2019 02:45 PM
Originally Posted by mebolson (Post 15523239)
If anyone is interested, I carry the Atom SV-1R engines, broke-in by Adam Drake.
E
was wondering what the factory needle settings are. Or what the normal settings usually are. I seem to be a full turn out from flus on bottom and alot in from flush on top lol. No problems. Just has me worried im in that fat bottom lean top range. Dont want that

VPProUSA 11-11-2019 06:20 AM
Originally Posted by deadmancourt (Post 15543083)

was wondering what the factory needle settings are. Or what the normal settings usually are. I seem to be a full turn out from flus on bottom and alot in from flush on top lol. No problems. Just has me worried im in that fat bottom lean top range. Dont want that
Stock setting:
Top: 1.5 turns out from all the way in
Bottom: Flush
Mid: 1/2-1 turn out from flush

Check the mid range first. On some of the carbs, it cuts off the fuel supply too much running the needle flush, then causing a rich bottom end setting.. To check it, remove the top needle assembly and look down at the holes in the mid range. Set so the holes line up and tune from there.

deadmancourt 11-11-2019 09:51 PM
Originally Posted by VPProUSA (Post 15543446)
Stock setting:
Top: 1.5 turns out from all the way in
Bottom: Flush
Mid: 1/2-1 turn out from flush

Check the mid range first. On some of the carbs, it cuts off the fuel supply too much running the needle flush, then causing a rich bottom end setting.. To check it, remove the top needle assembly and look down at the holes in the mid range. Set so the holes line up and tune from there.
thanks gene. My son was given a brand new 1 that was broke in by adam drake and a almost new 1. I ran about 6 tanks out front of my house and slowly brought it up to race tune about the 5th tank. Then we went and he raced all day no issues. I just noticed that if you go an hour or so too rich on the bottom it would give a slight lean bog when trying to be snappy. Im pretty sure everything but the mid range is in the stock setting area. The mid range is flush.

rcmania74 01-06-2020 06:17 PM
Why would it give a lean bog

rcmania74 01-06-2020 06:22 PM
Anyone selling a nice used spec r?

1evo RRR Driver 01-06-2020 09:46 PM
Originally Posted by deadmancourt (Post 15544002)

thanks gene. My son was given a brand new 1 that was broke in by adam drake and a almost new 1. I ran about 6 tanks out front of my house and slowly brought it up to race tune about the 5th tank. Then we went and he raced all day no issues. I just noticed that if you go an hour or so too rich on the bottom it would give a slight lean bog when trying to be snappy. Im pretty sure everything but the mid range is in the stock setting area. The mid range is flush.
not sure that’s possible, to lean bog if you richen a motor. If you richen it then it’s fat! N prob spools up slow

RCBaller 09-25-2020 03:09 PM
I would like to know if you still had any Atom SV-1R engines for sale "New, Used or in parts ". Please let me know.

Thanks a million


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