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Ive sent you an email Tim Jason

the pipe that i have on it SPP td21 . its Cranking up fine.. the others i have tried are all good also ,i dont see much difference between them. saving a few grams with carbon ... :lol: h4 , h5 , 1716 are all working and throttleing well. on 50% but i would like to launch a v9 , and maybe...

6% oil , holy batman !!! Jason

yes i would have to follow that logic , 70% keeps coming up, so there must be some merit ,. and these little buby engines dont drink much overall. its not like im trying to run a 90 on 70% couldnt afford to do that ! just would like to know what should be changed , Thankyou DON , for your...

i am curious in the benfits to make the jump , but how do i best use this extra bang ?? when changing from 50% nitro on a stock 21 valv direct to 70% nitro nitro on a 21. ?? generally speeking ..... to get the benefit where do i change first ?? do i prop up ? lengthen or shorten the pipe ...

yeah . at the pond we have some concrete pipes feeding storm water into it. one guess where my 21 jag ended up . Yeah, up the small pipe without any sponsons... i swear it was a radio problem , but i may have just pushed to hard.. so i dont run fast boats in that pond , anymore unless they...

Soo.... what happened ??, did it just die or was it no good fast ..??? what props ran ok on it ?? i won one for 1$ plus ship, it should suit my pond , ie disposable hull , LOL's now what motor to put in it Jase

looks like your at the beach ... nice vid , i thought they were going to race .... Jason

yep my 21 rigger had a nova mega 21 ls in it , and i have fitted a valv in its place , i run the same prop just removed the dia , until it spun up hard ... but lower pitch ranges and a short pipe (7 3/8 - 8 1/4 inches) is working for me at the moment on 50% and yes the valv 21 is a dam fast...

if you are talking green head LS 21, compared to a nova mega MR2-ns , there is no comparison.. the nova is a great motor , it does make more power , only due to the 9 ports ,and some fine machining .. the cmb LS 21 , is a third of the price new , and goes exactly like its price , GOOD but...

Quote "When I first saw the pics of the HR91 I thought about the carb height and wondered why they didn't go bolt on. " perhaps they needed a longer runner length , ? i wish it was bolt on to , but hey its what we get i suppose.. in au there are two versions of this motor around, the first...

thanks for laying it out mark ... Jason

any other good pipes to try ? Jason