Lunatik Boost Bottle dyno results

[Lunatik Engineering]

Stock CY23 with no airfilter
premium gas with Klotz 25:1
Stock cannister muffler

[boarder4twnty]

not much gain there, but there is a little. Looks like it makes power a little sooner but at peak it's actually lower (by a cunt hair)....

[IMADMAN]

So? HP went down .02 and torque went up .09 all at lower RPM's. What kind of #'s would we be looking to see a noticeable gain or loss? Would boost bottle design make a difference?

[DarkSoul]

Hey Matt, how many pulls did you do for each? With just that small a difference, I am just curious to see if it fluctuates much, or if that is pretty much a good representation of what you get (or don't get).

Nice test though, I think that pretty much puts that whole thing to bed.

[Juice McGoose]

Looks to me that power above 8200 rpm, about where my clutch engages, is better without the boost bottle.

[boarder4twnty]

Originally Posted by DarkSoul

Nice test though, I think that pretty much puts that whole thing to bed.

+1 to that.....

[idrinorbarsaku]

i am gonna say that putting it on and not installing it will make your baja look better and faster!

[boarder4twnty]

Originally Posted by idrinorbarsaku

i am gonna say that putting it on and not installing it will make your baja look better and faster!

, you may be right. Maybe I'll make a few bottles only and list them on Ebay ....

[idrinorbarsaku]

I'm curious to see how 2 bottles would perform

[idrinorbarsaku]

if they made a bottle out of CF like paintball nitrogen tanks i would buy it!

[idrinorbarsaku]

so a stock 23cc with a sh!t exhaust has about 2.2hp? thats not as bad as i thought! though its still too low to scare you

[Lunatik Engineering]

Originally Posted by DarkSoul

Hey Matt, how many pulls did you do for each? With just that small a difference, I am just curious to see if it fluctuates much, or if that is pretty much a good representation of what you get (or don't get).

Nice test though, I think that pretty much puts that whole thing to bed.

Ted, I made 10 runs. I optimized the tune on each setup in four runs, took the best of each and overlayed them for the above charts.

[Monsterman]

Very cool test I was talking to another member myself about getting a boost bottle I think I will save my money for some other parts really didnt impress me as much as it did when we talked about it... Thanks for the dyno Luna ..

[IILLUSIONSS]

Great test ,i was about to buy one but sounds like it's steeling fuel at top end,might help the over-fueling of the 813 carb though

[ToyFab]

Interesting....

I would be curious to know how well as case reed would perform with a boost bottle.

I heard that the boost bottle was originally designed to work with the reed engine.

[atvrider93]

looks like it would be better without the 8000 spring than with without
i think i will make one and make the tube go nowhere

[Lunatik Engineering]

Originally Posted by ToyFab

Interesting....

I would be curious to know how well as case reed would perform with a boost bottle.

I heard that the boost bottle was originally designed to work with the reed engine.

I just happen to have a pretty nice reed engine..............................

[atvrider93]

mine's almost done, so, where should i put the other end of the tube?

[dliguori25]

Thanks for running this test lunatik! For a long time I've been a skeptic and I've wanted some actual numbers rather than the "It seems faster off the line" (seat of the pants) bs that people have posted on this subject.

[EarthSurfer]

Originally Posted by boarder4twnty

not much gain there, but there is a little. Looks like it makes power a little sooner but at peak it's actually lower (by a cunt hair)....

Consider that the clutch comes into play about 7 or 8 grand. The extra torque these graphs show would be spinning in the bell before the buggy moves. According to the dyno, I see almost nothing but loss. From what I know about boost bottels (not a lot of detail), you don't see the benifits of them with wide open runs only. Dynos don't measure things like throttle response and partical throttle opening very often, and a user might find a small benifit when actually running on the ground. Gotta say though---according to these graphs--it does not look good, and the throttle response of a well tuned RC engine is pretty good.