No, I was wanting to but it there were pretty thin there yesterday - I think it was too cold for most and it was cold - the track is getting pretty nasty too -

Scott will be re-doing it on Monday for the ETC Series running next Sunday -

Sat will be packed with Electric practicing - I think a good Truggy day :D - not sure if we'll get to race or not - if enough 1/8 electric show-up we will -

He'll be closing the track on the 14th - for a new roof going on the place :nod:- the shop will be open for those having needs -
Hopefully the track will re-open right before/after Christmas so we can all play with our toys -

I'll be in touch soon with some questions - I'll just give you a call when I have a free evening -

Happy Holidays!!

-Jeff

[QUOTE=houston;6684231]Drawbacks ; you will cause more stress to the rod/wristpin by leaving the compression where it is at , especially during break in . This will also create more predetination resulting in more carbon build up and making the plugs foul out more often . Although you can get away with running the engine as it comes just fine , you can make it better by adding the shim.



Benefits: smoother power ( plus 4 has the shim already added;) ) , you will also gain runtime by adding the shim , more efficient operation of the engine by less predetination and pretty much the opposite of what I said in previous paragraph zixxer.

These recommendations more for running 30% fuel which is for the most part what we here in america run














i have a question about the nova .21 bf i was running 25% nitro for a while.
and im running 20% byrons fuel should i remove one shim since its
shimmed for 25% , and also i only have 1 gallon of fuel and 1 quart of
fuel in the engine and i can turn the flywheel with my finger and turn
the piston over is that fine already i dont have much fuel run though it
it was pretty tight not to long ago i had to use the heat gun to
get it to loosen up.:)




.

[QUOTE=tc5 man;6686275] dont confuse pinch and compression ;):D

it is better during the break in period to be overshimmed for sure . if you are running 20% , leave stock shimming and use a hotter plug such as odo77 or 100 . if you like nova plugs us ultra c5g , if you like mccoy use mc59 or mc8

oh ok i use the nova 5 plug by the way is it fine though that i can turn
the flywheel over already it still has a tight pinch though

at 1.25 gallons of 20 or 25% fuel you should still have a fairly tight engine but you should be able to turn over by hand with a little resistance .


depending on how it was broke in of course:D

well i say it like this i dont have to use my heat gun now to loosen it
up but yea it has a little resistance to turn the flywheel over.

i recommend using the heat gun to preheat ( or one of those powerhouse engine guys "the heat" things) for at least 2 gallons . just because the engine will turn over on the box without heat doesnt mean you should ;)

makes sense it will probery last longer doing that if i ever get the bf .21
modded does it make it harder to tune or finky to tune

I have friends that use the bands for the life of the engine. They work very well.:nod:We have been using for 3-4 years.

depends who is doing it ? ;)

what if you"re doing the mod for extra power

so which is it chris? Redding, CA or ontario , Canada ? :lol:

i say no but i would look at feedback to decide . :nod:

i have had no complaints whatsoever about any of the engines out there engraved H.E.S. ;)

if there are any , i would like to welcome so i can work on the problem with the individual , thats called service . i try to do what i can in that dept. :cool:

Can you identify 21 for me
 

Picked a used 21 NR or JP based. Black case,green head.All case markings milled off except made in italy.There are 8 ports visible like skinny then square all the way around 2 lower ports. Crank & turbo cut way enlarged and polished. The crank seem like it wasn't done by the guy that did a very basic light flow porting, A little rough but didn't get carried away at all I cleaned it up by hand.

my h.e.s. tuned n21bf isn't hard to tune at all and i'm a newbie. don't hesitate to get mr. monty to mod yours. while he's at it, he can probably check your engine internals out and get it back to you in tip-top shape if there's anything wrong.