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71
Safety / Re: How do you guys do it?
« Last post by Dynoroom on March 21, 2024, 02:59:25 PM »
scta-bni.org
Bottom of page, second item, Bonneville Documents.
Oops, looks like they moved it.... Hang on....
Okay, it's under SCTA Racing Info.
72
Safety / Re: How do you guys do it?
« Last post by 71GSSDemon on March 21, 2024, 02:47:42 PM »
Thank you.  SCTA club may be a great thing to look into.

I never thought of printing an inspection form.  Duh.  Thanks.  I have actually thought the USFRA street class or 150mph club would be the best place to start.  Got my feet wet and meet people, ask questions.  My ultimate goal is 200mph.  No records, no nothing.  Time slip is enough.  It will take a long time, but it will be worth it.  Baby steps until then.


Ok, where do I find an inspection form?  I looked on this site, the mother site, BNI/SCTA site. Searches find nothing.
73
Build Diaries / Re: 100" alky Sportster
« Last post by delcrossv on March 21, 2024, 02:08:28 PM »
On another note, do you folks run an open velocity stack or is there enough stuff in the air that you'd recommend some kind of air filter?
74
Build Diaries / Re: 100" alky Sportster
« Last post by delcrossv on March 21, 2024, 02:04:58 PM »
Granted this is a small(er) Harley motor and is aided by a turbo, but it spins up pretty well (past 8000) in the lower gears.  We were geared a bit too tall and needed more room to stretch out (short course only qualified) and hopefully get back to the 8k range.  p.s. stock bottom end and rods, ebay pistons and borrowed heads.

Cool! Who's heads?
75
Safety / Re: How do you guys do it?
« Last post by 71GSSDemon on March 21, 2024, 02:03:52 PM »
Thanks, I will try tracking him down.  I had a post a while back asking if there was anyone in WI to chat with.  Maybe someone up in Rice Lake/Hayward, but never got a name.  I believe there is a black Monte Carlo in WI that runs at USFRA.  Seen a YouTube video.  Can't find them.
76
Build Diaries / Re: 100" alky Sportster
« Last post by delcrossv on March 21, 2024, 02:01:07 PM »
Here they are, Rods and big end cages



77
Build Diaries / Re: 100" alky Sportster
« Last post by delcrossv on March 21, 2024, 01:59:19 PM »
Regarding 8,000 rpm . . .

Many years ago, in an article about H-D dragsters, I read that a big unblown v-twin could not breathe well enough to achieve that engine speed.  I wish you good luck with this project.

Thanks!

On nitromethane they can do 9k (for 10 seconds or so) but the stoich is like 1:1. That's one reason why we went with the M8 heads. Flow is like 375 CFM at 28", and that's more than I can stuff in the cylinders at 8k. The other is reduced valve inertia and corresponding spring pressure. The spring pressure on those drag engines is so high that with the plugs out you can't turn them over without a 4' breaker bar.   :-o
78
Safety / Re: How do you guys do it?
« Last post by Seldom Seen Slim on March 21, 2024, 01:40:07 PM »
SE Wisconsin, hunh?  There are a few racers within a hundred or so miles of you.  Chris Conrad/Milwaukee Midget is in Milwaukee, as you might guess.  He's a member here and might be worth chasing down and asking for coffee... :-) :-)
79
Safety / Re: Automatic brake diverter valve
« Last post by Stainless1 on March 21, 2024, 01:23:38 PM »
retractor springs... something you would make to pull the pads away from the rotor so they do not rub.
If you move the pads away and never touch the pedal it accomplishes the same thing... Bike guys generally spread the pads so they don't touch... easy with a bike, the brake is exposed... Cars with brakes in the wheel, not so easy, thus put springs on them and they self spread.
80
Safety / Re: How do you guys do it?
« Last post by 71GSSDemon on March 21, 2024, 01:22:15 PM »
Thank you.  SCTA club may be a great thing to look into.

I never thought of printing an inspection form.  Duh.  Thanks.  I have actually thought the USFRA street class or 150mph club would be the best place to start.  Got my feet wet and meet people, ask questions.  My ultimate goal is 200mph.  No records, no nothing.  Time slip is enough.  It will take a long time, but it will be worth it.  Baby steps until then. 
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