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Search took 0.01 seconds. Search: Posts Made By: Frank
Forum: Motorcycles / Scooters 03-10-2023, 08:30 AM
Replies: 26
Views: 3,065
Posted By Frank
For sure a Kamm tail would help, covering 50% of...

For sure a Kamm tail would help, covering 50% of the front wheel with a bigger fender is good. I'd also consider trying to cover the rear wheel (think hubcaps). Bringing the front fairing back is...
Forum: Fossil Fuel Free 06-12-2020, 07:24 AM
Replies: 107
Views: 8,693
Posted By Frank
No accounting for the cost of pollution?

No accounting for the cost of pollution?
Forum: Aerodynamics 01-04-2020, 02:49 PM
Replies: 9
Views: 761
Posted By Frank
Thanks everyone - I'll post a "plan view" some...

Thanks everyone - I'll post a "plan view" some time and update next spring once I get some consumption data.
Forum: Aerodynamics 01-01-2020, 08:27 PM
Replies: 9
Views: 761
Posted By Frank
Hi freebeard, It does taper to a pretty...

Hi freebeard,

It does taper to a pretty sharp point, about 16" change in width over the 30" length which I think is about 14* per side. I chose a sharp closure thinking I might try some VG's to...
Forum: Aerodynamics 01-01-2020, 04:17 PM
Replies: 9
Views: 761
Posted By Frank
There was a sidewind all day of almost 10 mph. ...

There was a sidewind all day of almost 10 mph. What was interesting was the run with the tail was not only quicker (by 5 mph) but the bike felt more stable. You can see by the little flap at the...
Forum: Aerodynamics 01-01-2020, 04:09 PM
Replies: 9
Views: 761
Posted By Frank
Here's some pics of what I built (taken at the...

Here's some pics of what I built (taken at the 1-mile point).

https://live.staticflickr.com/65535/49312178017_ba69e9964f_b.jpg (https://flic.kr/p/2i8xNvP)LTA 2019 Harvest Event...
Forum: Aerodynamics 01-01-2020, 04:07 PM
Replies: 9
Views: 761
Posted By Frank
Homemade Motorcycle Tail Section

I've been involved in land speed racing for a number of years, mostly with the Loring Timing Association, which races at the old Loring AFB in Limestone, Maine. I've run a number of bikes and have...
Forum: Aerodynamics 09-06-2019, 05:03 AM
Replies: 32
Views: 6,494
Posted By Frank
You may be right! If well done that seems to be...

You may be right! If well done that seems to be the case: https://en.wikipedia.org/wiki/Diffuser_(automotive) although I suppose actual testing might reveal the truth.

Love your haiku BTW... :)
Forum: Aerodynamics 12-05-2018, 12:43 PM
Replies: 42
Views: 4,541
Posted By Frank
Totally understandable...

Totally understandable...
Forum: Aerodynamics 12-05-2018, 12:21 PM
Replies: 42
Views: 4,541
Posted By Frank
Nitpicking, but the EPA says 1 gal.US is...

Nitpicking, but the EPA says 1 gal.US is equivalent of 33.7 kWh... :turtle:
Forum: Aerodynamics 11-19-2018, 08:06 AM
Replies: 42
Views: 4,541
Posted By Frank
@aerostealth: videos no longer available? And...

@aerostealth: videos no longer available? And which article are you referring to please (the .13 body form boat tail)?

(thanks)
Forum: Aerodynamics 04-04-2018, 07:55 AM
Replies: 29
Views: 7,397
Posted By Frank
Another thread to read..... :) Crosswinds...

Another thread to read..... :)

Crosswinds are always an issue. I ran FoilSim (from NASA) to get a feeling of sideforce (lift) using ballpark numbers. It's not hard to develop a couple hundred...
Forum: Motorcycles / Scooters 03-20-2018, 02:28 PM
Replies: 180
Views: 38,310
Posted By Frank
To be fair, there were some pretty fast speeds...

To be fair, there were some pretty fast speeds turned during Speed Week but I was there at BMST (bikes only). Last year there was only one course and it was bbuummppyy. One guy I know got bumped...
Forum: Motorcycles / Scooters 03-05-2017, 08:34 AM
Replies: 13
Views: 3,385
Posted By Frank
Bigger improvements can be had at the front wheel...

Bigger improvements can be had at the front wheel where relative wheel speed is higher; LSR fenders have shown 2-3 mph top speed improvement on big bikes. This may not sound like much, but given the...
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