HarleyTechTalk

Got the Sportster out at Martin Dragway today finally , 11:80 @ 115 , 3 passes all close to the same times , get that big D carb back on it next year and try to get in the 10,s

👍🏻👍🏻👍🏻
Track therapy is good for the soul (and sometimes hard on the wallet 😁)

11.10 at 120  , getting better

ran a 11.02 at 122 yesterday , so close !

Anything specific you're doing to continue to improve each session?

Launch a little harder , was shifting at the shift light ( 7100) , going a little past it now , still not hitting Rev limiter . yesterday was a blast , running beside another Sportster , he had Wheelie Bar a Slick and Air Shift , im foot shirt , no Bar , Street Tire . He jump me half a bike from the line and would catch him at the 60' and we would run side by side all the way then i would pull him half a bike at the finish . think ive made 8 passes on this bike now .Fun Fun !

ELEVEN O's on a Sportster = BMF 

This sounds like a lot of fun! How bout some pics or video and details of the bike?

Hammer 1275 , BFH Heads , Bored S&S G at the moment ,Darkhorse Crank work  Carillo Rods , Zippers Gears . 125 HP , stretched and lightend , just picked up a Wheelie Bar , going to put S&S D with 3 Thunderjets back on and try launching at 7k , hopefully

Right on.

Fuggin' A dude, those are good runs!

Quote from: hbkeith on January 19, 2021, 02:08:52 AM
Hammer 1275 , BFH Heads , Bored S&S G at the moment ,Darkhorse Crank work  Carillo Rods , Zippers Gears . 125 HP , stretched and lightend , just picked up a Wheelie Bar , going to put S&S D with 3 Thunderjets back on and try launching at 7k , hopefully

who's heads / camshaft?

very fast bike 

Hammer , im not up to Bikes potential yet , bike has ran 10.40

heads and cam are Hammer?

can you be more specific?

10.40's is amazing!!!!! 

what year Sporty?

95 883 , Stock Heads with Hammer BFH head work , Hammer cams  600 lift , iits not a street bike , droped on the ground , no charge system  etc

Kind of an old description of the BFH head work can be found here: http://harleytechtalk.com/htt/index.php/topic,90501.0.html . We were calling it "Sledge +" at the time, because Sledge was our top of the line and we figured out how to improve it, but later a customer suggested the "BFH" name and we liked it.

In short: 2.020 intakes, 1.630 exhausts, which at the overlap we run in the cams requires us to alter the valve angles, spreading the valves farther apart. Which in turn is only possible because of the larger bore the 1275 kit brings to the party. Conical springs, Ti retainers, 7mm stems, our design .600 cams, 1.725 rockers, the combination is tested stable to 8000rpm. We also do some welding on the intake short side to raise it. And we run it through our 5-axis porting machine: http://harleytechtalk.com/htt/index.php/topic,94827.0.html

Quote from: aswracing on January 26, 2021, 08:13:28 AM
Kind of an old description of the BFH head work can be found here: http://harleytechtalk.com/htt/index.php/topic,90501.0.html . We were calling it "Sledge +" at the time, because Sledge was our top of the line and we figured out how to improve it, but later a customer suggested the "BFH" name and we liked it.

In short: 2.020 intakes, 1.630 exhausts, which at the overlap we run in the cams requires us to alter the valve angles, spreading the valves farther apart. Which in turn is only possible because of the larger bore the 1275 kit brings to the party. Conical springs, Ti retainers, 7mm stems, our design .600 cams, 1.725 rockers, the combination is tested stable to 8000rpm. We also do some welding on the intake short side to raise it. And we run it through our 5-axis porting machine: http://harleytechtalk.com/htt/index.php/topic,94827.0.html

< what THE Man said 

Quote from: aswracing on January 26, 2021, 08:13:28 AM
Kind of an old description of the BFH head work can be found here: http://harleytechtalk.com/htt/index.php/topic,90501.0.html . We were calling it "Sledge +" at the time, because Sledge was our top of the line and we figured out how to improve it, but later a customer suggested the "BFH" name and we liked it.

In short: 2.020 intakes, 1.630 exhausts, which at the overlap we run in the cams requires us to alter the valve angles, spreading the valves farther apart. Which in turn is only possible because of the larger bore the 1275 kit brings to the party. Conical springs, Ti retainers, 7mm stems, our design .600 cams, 1.725 rockers, the combination is tested stable to 8000rpm. We also do some welding on the intake short side to raise it. And we run it through our 5-axis porting machine: http://harleytechtalk.com/htt/index.php/topic,94827.0.html

I checked it out - very cool. I've had an itch to build a 90-100 hp Sportster for the last few years. Gotta find a low miles '03 Anniversary to pimp out.

You talk about scratching an itch we had cycle and 4 wheeler races on the lake here last weekend and there was guy there riding a 1200 sportster. They can go faster around the corners on ice with studded tires than they can on a dirt track. Came out of turn four on the back wheel.

Quote from: ultra 08 on January 28, 2021, 12:12:58 PM
You talk about scratching an itch we had cycle and 4 wheeler races on the lake here last weekend and there was guy there riding a 1200 sportster. They can go faster around the corners on ice with studded tires than they can on a dirt track. Came out of turn four on the back wheel.

Oh yes, if you've not seen ice racing, it is a shock at how fast they can rip. No sliding through the corners, just stick and go.

Quote from: aswracing on January 26, 2021, 08:13:28 AM
Kind of an old description of the BFH head work can be found here: http://harleytechtalk.com/htt/index.php/topic,90501.0.html . We were calling it "Sledge +" at the time, because Sledge was our top of the line and we figured out how to improve it, but later a customer suggested the "BFH" name and we liked it.

In short: 2.020 intakes, 1.630 exhausts, which at the overlap we run in the cams requires us to alter the valve angles, spreading the valves farther apart. Which in turn is only possible because of the larger bore the 1275 kit brings to the party. Conical springs, Ti retainers, 7mm stems, our design .600 cams, 1.725 rockers, the combination is tested stable to 8000rpm. We also do some welding on the intake short side to raise it. And we run it through our 5-axis porting machine: http://harleytechtalk.com/htt/index.php/topic,94827.0.html

BFH , is that why there is a Big F ing Hammer stamped in my Jugs ? lol

Ran a 10:91 last night , I think my woman was more excited than i was 

Quote from: hbkeith on June 04, 2022, 11:12:21 AMRan a 10:91 last night , I think my woman was more excited than i was

   

Quote from: hbkeith on June 04, 2022, 11:12:21 AMRan a 10:91 last night , I think my woman was more excited than i was 

    Many lady friends or wives would be saying "That's too much power.  Your going to have an accident".  I heard that from a friend,

Badass man.  I get my electric shifter fixed and get my bagger to the track.  The launch scares me a bit,  dont wanna flip it. Lol