30 tooth on 48
Best thing I ever did to my old 48 was put a 28T pulley from an 883 on, really woke it up and got it into the powerband sooner. Highway rpm wasn't ridiculously high either.
Joker machine make a trick looking cover.
I had the 7.9L tiny tank on mine, with cams and headwork I was lucky to get 90km's on a tank. Plus I rode that bike like I stole it.
just like you should do i reckon!
the old peanut tank did not go far but buell light at 190kg so economy different, the ridged motor carb sporty lighter too at 220kg the rubber mount sporty got heavy
but that's how harley do it
well on the street i can't afford to loose licence so just ride normal at track i'll see how i go no speed limit anyone welcome to have fun!
just know i'm out dated cheers
Mate im the same, I fill up every ride it shits me! If I ride hard the light comes on at 90km and then starts popping at 100
with a dyna twin cam carb, I had a lot of pass's in 1/4 mile I found best gear ratio for me was 3.42 final, I dropped the primary ratio lower using evo primary clutch hub ( lower geared, made a good gain also helps clutch work better. another thing I found with the lower primary ratio was my cranking pressure went up, when I tested it.
with sporty I don't know how to lower primary ratio. but I have both 27tooth & a 26 tooth front Sproket I can try. I found at drags having lower gears helps traction but you also have to do everything quicker to see results. like your rev's will come up quicker so you have to react to the shift quick ( every shift takes time ) the quicker you shift the better, normal lowering your gear ratio will also lower your 60 ft time so if you lower your 60ft and do everything else right your et will be lower.
Yeah I can sacrifice some top end speed, it only pulls 107 on the 1/4 mile, got another 20-25mph up it’s sleeve atleast.
Timing on this bike has been a pain in the arse with the extra compression, I had to shave a heap off the maximum load areas in the map hammer sent me. 10 degrees in the worst area to stop pinging. They must have better fuel over there.
I could probably add a bit more timing with lower gearing, it wouldn’t be much though. Give it a few powervision autotunes with the widebands, just to clean up the airflow charts and hit the drags... so who’s got that 27t pulley they want to sell to me... cheap?
look's easy on paper!
difference is your talking about a multi valve light weight high raving 4 cylinder
the sportster motor a lot different, so what worked for u on the ninja might not work on a motor thats near its limits at 7,000rpm and only has two cylinders.
also tune will be a lot different.
Advancing ignition timing is a big no no on harleys, any mods usually require it to be retarded or there are detonation/preignition problems i'm told.
There’s gains to be had by adding some timing to the stock XR engine with a good pipe and air filter. I’ve seen the maps and the dyno sheets. Easy to see the difference with the powervision software compare option too.
I can’t remember the exact numbers of how much they adjusted timing by, but the gains were impressive. 10, 15hp gain was common, some of them even getting over 20.
I’m sitting outside a hospital in Brisbane waiting for my wife to come out of surgery at the moment. Hopefully I’ll be back home in the bush tomorrow and will upload a few screen shots of the timing changes in the near future, if you like.
Ouch! Hope she has a speedy recovery mate :(
Did you give them the correct address? Double check just to be sure...its the one in Terania Avenue, Ormeau Hills.