Need help tuning my O.S. MAX. 18 CV-R.

[Daeday02]

Need some help tuning my engine I live in Phoenix, Arizona just so you know the pressure and stuff kinda getting hot now come off and on. Still waiting on carb needle thought I was thinking traxxas factory settings but I dont wanna risk blowing it up

 

[olds97_lss]

Looks like according to the manual for the slide carb version:
http://manuals.hobbico.com/osm/18cvr-rx-manual.pdf
LSN seat is 1.5 turns in from flush with the housing
HSN is 2 turns from all the way in


Found this for rotary carb version:
http://www.os-engines.co.jp/english/line_up/engine/car/manual/18cvr_bh.pdf
LSN .5 turns in from flush
HSN 2 turns from all the way in

 

[Daeday02]

Looks like according to the manual for the slide carb version:
http://manuals.hobbico.com/osm/18cvr-rx-manual.pdf
LSN seat is 1.5 turns in from flush with the housing
HSN is 2 turns from all the way in


Found this for rotary carb version:
http://www.os-engines.co.jp/english/line_up/engine/car/manual/18cvr_bh.pdf
LSN .5 turns in from flush
HSN 2 turns from all the way in

Thanks

 

[D3MON]

Loved that engine in my maxx, never had to revert to factory settings though sorry not much help

 

[olds97_lss]

I had one many years ago. Was a good little engine. I ran it in an old HPI Nitro MT, which was a single speed 1/10th offroad truck. The truck was fragile, but the engine was very solid. Tuned easy and ran very well. Was a far cry from the original hpi 15 that was in there.

I had a few OS 15 CV-R(X)'s in the past and they were long life engines that were also easy to tune. The 18 had quite a bit more torque. Wish it existed when I had a t-maxx as it would have been a lot better in that I think.

 

[cbaker65]

I had one many years ago. Was a good little engine. I ran it in an old HPI Nitro MT, which was a single speed 1/10th offroad truck. The truck was fragile, but the engine was very solid. Tuned easy and ran very well. Was a far cry from the original hpi 15 that was in there.

I had a few OS 15 CV-R(X)'s in the past and they were long life engines that were also easy to tune. The 18 had quite a bit more torque. Wish it existed when I had a t-maxx as it would have been a lot better in that I think.

All .those were the days when engines were easier to tune at only a few turns!.....LOL

 

[olds97_lss]

All .those were the days when engines were easier to tune at only a few turns!.....LOL

Yeah... I still have an OS in rotation, the 21TM in one of my revos. Still a great little engine and holds a solid tune all day long. Wish they were all like that.... grumble stupid lrp 30 grumble...

 

[cbaker65]

Need some help tuning my engine I live in Phoenix, Arizona just so you know the pressure and stuff kinda getting hot now come off and on. Still waiting on carb needle thought I was thinking traxxas factory settings but I dont wanna risk blowing it up

If the engine is old & used ,upon cleaning it ,it is best if you coat the old needles with slime , or syliglide from Napa also ,
it wouldn't hurt to seal the engine up on the back plate & carb. throat with some high heat RV sealer
Like this ,it is not a OS cvr. ,it an AE. 18 though ,but it shows where!

 

[Arikohama]

Hii, I need a fine tuning for OS 12CVR
Thanks ;-)