Search found 530 matches

by Jack Gifford
Tue Sep 29, 2020 6:01 am
Forum: Off topic
Topic: Crankshaft experiment
Replies: 171
Views: 46270
Flag: United States of America

Re: Crankshaft experiment

I finally got the lakester to a landspeed event the first week of September at the former Loring AFB (12,600' x 300' runway). Plans for a crew fell through, but other racers were very helpful. It was a long trip- 1,720 miles towing with the '59 GMC- but neither the truck or race car suffered any dam...
by Jack Gifford
Fri Sep 18, 2020 7:13 am
Forum: Off topic
Topic: Star
Replies: 295
Views: 64453
Flag: United States of America

Re: Star

Wishing you a good recovery.
by Jack Gifford
Thu Aug 06, 2020 5:46 am
Forum: Off topic
Topic: Large workpieces
Replies: 3
Views: 335
Flag: United States of America

Large workpieces

Who says my little mill can't deal with an 11'9" long workpiece? :shock:
by Jack Gifford
Tue Aug 04, 2020 6:30 am
Forum: Off topic
Topic: Star
Replies: 295
Views: 64453
Flag: United States of America

Re: Star

Nice machine!
I'm old-fashioned... Does a modern "geared lathe" use gears to relate spindle rotation to tool travel? Or is it done via computer?
by Jack Gifford
Mon Jul 20, 2020 5:36 am
Forum: Off topic
Topic: Star
Replies: 295
Views: 64453
Flag: United States of America

Re: Star

I'm glad you guys didn't hurt yourselves. Bikes can be repaired...
by Jack Gifford
Tue Jun 09, 2020 6:34 am
Forum: Off topic
Topic: Lock down projects
Replies: 29
Views: 2633
Flag: United States of America

Re: Lock down projects

Tom- I suppose you heard that the Loring spring meet is cancelled?
by Jack Gifford
Mon Jun 08, 2020 5:58 am
Forum: Off topic
Topic: Lock down projects
Replies: 29
Views: 2633
Flag: United States of America

Re: Lock down projects

... Looks like the front axle may be out in front of the steering axis... Sorry I didn't express my comment correctly. I just wanted to point out that trail is measured (from steering axis) to wheel/ground contact, not to the axle. Thus, given reasonable rake, it's quite common for the axle to be f...
by Jack Gifford
Sun Jun 07, 2020 6:28 am
Forum: Off topic
Topic: Lock down projects
Replies: 29
Views: 2633
Flag: United States of America

Re: Lock down projects

koncretekid wrote:
Sat Jun 06, 2020 11:38 pm
... Looks like the front axle may be out in front of the steering axis...
Wouldn't that be positive trail?
by Jack Gifford
Tue Jun 02, 2020 5:38 am
Forum: Tech
Topic: GPS Speedometer
Replies: 11
Views: 990
Flag: United States of America

Re: GPS Speedometer

Tom- is that a virtual needle on the GPS speedometer?
The GPS speedometer in my lakester has only a digital readout. I like the look of yours.
by Jack Gifford
Wed May 20, 2020 5:26 am
Forum: Off topic
Topic: Lock down projects
Replies: 29
Views: 2633
Flag: United States of America

Re: Lock down projects

Typical "stir crazy" tasks. Example- cleaned out trash under the workbench for the first time since building this house 45 years ago. I discovered stuff I didn't even remember having.
Picture of "found" tools to give to grandsons. And they are all functional!
by Jack Gifford
Thu Apr 30, 2020 4:39 am
Forum: Off topic
Topic: Lockdown wish list
Replies: 20
Views: 1985
Flag: United States of America

Re: Lockdown wish list

A somewhat strange realization- looking at the list of bikes in my signature, and trying to honestly say "which one was comfortable ?"- it would surprisingly be the 1940 H-D 45 c.i. flathead! :werd I don't know about long-distance (first bike, only rode it one summer), but I still fondly remember (s...
by Jack Gifford
Tue Apr 28, 2020 5:20 am
Forum: Off topic
Topic: Lockdown wish list
Replies: 20
Views: 1985
Flag: United States of America

Re: Lockdown wish list

skippy wrote:
Tue Apr 28, 2020 12:38 am
... comfortable long distance riding...
That's an oxymoron- at least for every 2-wheeler I've had.
by Jack Gifford
Tue Apr 28, 2020 5:15 am
Forum: Project bikes
Topic: Converting a B50 to wet sump. (aka Boris Johnson)
Replies: 102
Views: 9416
Flag: United States of America

Re: Converting a B50 to wet sump.

This would be an off-topic question, except that PowerGlide was mentioned. I recently read somewhere(?) about a H*nda (race bike?) that used epicyclic (planetary) gearing. I can't picture such a thing, since it was a multi-speed box, 5 or 6 speed. Anybody here know of such an animal? Or did the auth...
by Jack Gifford
Mon Apr 27, 2020 5:17 am
Forum: Off topic
Topic: Lockdown wish list
Replies: 20
Views: 1985
Flag: United States of America

Re: Lockdown wish list

"Naughty but nice"?
by Jack Gifford
Sun Apr 26, 2020 5:24 am
Forum: Off topic
Topic: Lockdown wish list
Replies: 20
Views: 1985
Flag: United States of America

Re: Lockdown wish list

Barry- off topic- '82 V50III
by Jack Gifford
Sat Apr 25, 2020 5:11 am
Forum: Off topic
Topic: Lockdown wish list
Replies: 20
Views: 1985
Flag: United States of America

Re: Lockdown wish list

I'm envious.

Almost no bike stuff on my wishlist... except nicer weather (had icy roads two days ago). I just need to replace an oozing petcock on the Guzzi fuel tank.
by Jack Gifford
Tue Apr 21, 2020 6:19 am
Forum: Project bikes
Topic: Lozenge silencer
Replies: 16
Views: 2257
Flag: United States of America

Re: Lozenge silencer

Nice work! For clear coating bright metal I like Eastwood's Diamond Clear. It lasts okay on engine parts, but I don't know about on your silencer.
by Jack Gifford
Thu Apr 09, 2020 6:39 am
Forum: Project bikes
Topic: Converting a B50 to wet sump. (aka Boris Johnson)
Replies: 102
Views: 9416
Flag: United States of America

Re: Converting a B50 to wet sump.

kommando wrote:
Wed Apr 08, 2020 11:38 am
... the big end bearing is a needle roller bearing there is no back pressure...
No pressure? Don't side clearances of the rod's big end determine the pressure?
by Jack Gifford
Tue Apr 07, 2020 6:12 am
Forum: Project bikes
Topic: Converting a B50 to wet sump. (aka Boris Johnson)
Replies: 102
Views: 9416
Flag: United States of America

Re: Converting a B50 to wet sump.

Momus wrote:
Mon Apr 06, 2020 7:17 pm
... Jack, pretty much most of my reasons...
Go for it! Make the [deeper] sump from light alloy with plenty of fins- which will get more air contact than a tank hidden out of the air stream. Thermally insulating it from the engine cases would be desirable- but challenging.
by Jack Gifford
Mon Apr 06, 2020 5:16 am
Forum: Project bikes
Topic: Converting a B50 to wet sump. (aka Boris Johnson)
Replies: 102
Views: 9416
Flag: United States of America

Re: Converting a B50 to wet sump.

Having had lots of experience with dry-sump oiling (competition V8 & 4-cyl), I can tell you one reason I would prefer wet-sump, although it would probably be less of a concern for a bike engine. Since a dry-sump system must be designed with the scavenge rate sized greater than the pressure-side rate...
by Jack Gifford
Sun Feb 16, 2020 5:50 am
Forum: Off topic
Topic: Star
Replies: 295
Views: 64453
Flag: United States of America

Re: Star

minetymenace wrote:
Sat Feb 15, 2020 4:37 pm
... Irony is so wasted on our American cousins...
The sarcasm emoticon was so wasted on minety... :roll:
by Jack Gifford
Sat Feb 15, 2020 5:59 am
Forum: Off topic
Topic: Star
Replies: 295
Views: 64453
Flag: United States of America

Re: Star

Minety- are you joking? Or don't you read your own forums? :roll:
by Jack Gifford
Sun Feb 02, 2020 6:09 am
Forum: Off topic
Topic: Star
Replies: 295
Views: 64453
Flag: United States of America

Re: Star

beat wrote:
Sat Feb 01, 2020 8:30 pm
... the barrel has to be cut at the bottom by 1.7mm ...
And... custom shorter pushrods?
... "Bigger ports"... Different head? Or did you "carve out" the ports?
by Jack Gifford
Sat Feb 01, 2020 5:23 am
Forum: Suppliers and New Products
Topic: bend pipes
Replies: 16
Views: 5980
Flag: United States of America

Re: bend pipes

Nice work!
Is the engine's displacement increased in the same proportion as the exhaust ID area? :lol:
by Jack Gifford
Thu Jan 16, 2020 6:25 am
Forum: News
Topic: Exeter Trial 2020
Replies: 7
Views: 1592
Flag: United States of America

Re: Exeter Trial 2020

Congratulations!

I had a victor 441 (not the 'Roadster' in my signature) that was way too fast in first gear for trail/woods riding (stock I think?). Do you run slower gearing than stock?
by Jack Gifford
Tue Dec 10, 2019 6:26 am
Forum: Tech
Topic: Lozenge silencer
Replies: 7
Views: 1522
Flag: United States of America

Re: Lozenge silencer

In your quite-recent thread about this (Nov 19th?), someone posted a link to "The everlasting lozenge". I found it a very informative- did you read it? It seemed to me that it provided enough info for someone to build their own muffler.
by Jack Gifford
Sat Nov 23, 2019 7:21 am
Forum: Off topic
Topic: Star
Replies: 295
Views: 64453
Flag: United States of America

Re: Star

If the starting rollers had some texture, rather than being smooth...???
by Jack Gifford
Fri Nov 22, 2019 6:43 am
Forum: Off topic
Topic: Star
Replies: 295
Views: 64453
Flag: United States of America

Re: Star

I can already visualize Beat concocting motorized starting rollers... :cool:
by Jack Gifford
Fri Oct 04, 2019 5:23 am
Forum: Off topic
Topic: Crankshaft experiment
Replies: 171
Views: 46270
Flag: United States of America

Re: Crankshaft experiment

Thanks Beat! I'll be watching for some podium finishes with your 3-wheeler.
by Jack Gifford
Mon Sep 30, 2019 2:57 am
Forum: Off topic
Topic: Crankshaft experiment
Replies: 171
Views: 46270
Flag: United States of America

Re: Crankshaft experiment

Got in two more tenth-mile runs with no damage. Had to abort the first run- about two seconds out the rear tires broke traction and tried to pass me! Gearing was only increased about 12% and I didn't expect wheelspin. On the second run I stayed away from full throttle for a couple of seconds, so I d...
by Jack Gifford
Tue Sep 03, 2019 5:13 am
Forum: Tech
Topic: Lithium-ion battery pack
Replies: 6
Views: 1961
Flag: United States of America

Re: Lithium-ion battery pack

I'm amazed how inexpensive miniature electronics are. A BMS for $5? Wow!
by Jack Gifford
Tue Aug 27, 2019 6:06 am
Forum: Off topic
Topic: Crankshaft experiment
Replies: 171
Views: 46270
Flag: United States of America

Re: Crankshaft experiment

The race car treated me good once more- no issues. :thumb 85.3 MPH at the end of the tenth-of-a-mile was 7,100 RPM, which is getting closer to the engine speed I want to see. I need to improve some things in the cramped cockpit. For example, the required helmet and HANS device prevent me from tippin...
by Jack Gifford
Sun Aug 25, 2019 3:39 am
Forum: Off topic
Topic: Crankshaft experiment
Replies: 171
Views: 46270
Flag: United States of America

Re: Crankshaft experiment

Tomorrow I'll be at the tenth-mile drag event again... This time with gearing that's more appropriate... :oops:
by Jack Gifford
Wed Aug 07, 2019 3:58 am
Forum: Off topic
Topic: Crankshaft experiment
Replies: 171
Views: 46270
Flag: United States of America

Re: Crankshaft experiment

Another test-run with no breakage, this time on a quarter-mile track. Didn't learn much, due to a bad choice of gearing- too "tall" to get the engine into its intended rev range.
by Jack Gifford
Sun Jul 28, 2019 6:37 am
Forum: Off topic
Topic: Star
Replies: 295
Views: 64453
Flag: United States of America

Re: Star

What style oil ring is it? It doesn't look like any style that I'm familiar with.
by Jack Gifford
Fri Jul 26, 2019 6:46 am
Forum: This Forum
Topic: Hello???
Replies: 18
Views: 6414
Flag: United States of America

Re: Hello???

I think we set a new record- 3 full days with no new posts... :(
by Jack Gifford
Tue Jul 16, 2019 6:01 am
Forum: This Forum
Topic: Hello???
Replies: 18
Views: 6414
Flag: United States of America

Re: Hello???

Once more... no new posts in the last 24 hours. Must be great riding weather, eh? :smile: Actually, the weather here would make for good riding- I'm just too busy with the lakester right now. Shooting for doing some testing on the quarter-mile dragstrip at Norwalk Ohio- first August weekend is the A...
by Jack Gifford
Wed Jul 03, 2019 7:32 am
Forum: Off topic
Topic: Crankshaft experiment
Replies: 171
Views: 46270
Flag: United States of America

Re: Crankshaft experiment

Well, yes, it's intended to look like part of an airplane. The body is a fiberglas replica of a P-38 drop tank. Starting in 1947 hot rodders used surplus aluminum drop tanks for the original landspeed racing "lakesters".
by Jack Gifford
Mon Jul 01, 2019 4:52 am
Forum: Off topic
Topic: Crankshaft experiment
Replies: 171
Views: 46270
Flag: United States of America

Re: Crankshaft experiment

Inaugural outing went amazingly well. No problems, no liquids on trailer deck afterward. The only disappointment was my failure to observe ANY of the gauges, not even the tach, during those quick few seconds. Unfortunately the track's timing system failed to get an ET or MPH number. It definitely wa...
by Jack Gifford
Sun Jun 30, 2019 4:22 am
Forum: Off topic
Topic: Crankshaft experiment
Replies: 171
Views: 46270
Flag: United States of America

Re: Crankshaft experiment

I don't expect to actually run 120 MPH in a tenth-mile! Loring would be great, but I can't be ready. Many things are out-of-date (tires, harness, etc.) and I don't yet have a HANS device or latest-Snell helmet, nor a -15 firesuit. I know there are also some rules changes in the last decade- arm rest...