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Search found 797 matches

by BCjohnny
Sun Aug 01, 2021 5:13 am
Forum: Offtopic Forum
Topic: Good book
Replies: 27
Views: 1305

Re: Good book

Fifty years on the Persig book "Zen and the Art of Motorcycle Maintenance" is by no means the worst thing you can do with a few spare hours

My copy's long gone, I guess it's time to maybe buy another ......
by BCjohnny
Fri Jul 30, 2021 12:02 pm
Forum: Engine Tech
Topic: rolling road dyno ventilation question
Replies: 27
Views: 1140

Re: rolling road dyno ventilation question

My coils are copper While not wanting to argue, I'd say that's unusual ...... A typical Telma coil (one of sixteen) consists of 380 turns of 2mm aluminium wire ....... On another site ...... I believe a member from here Interesting discussion, and relevant to this Edit : Don't confuse the flexible ...
by BCjohnny
Thu Jul 29, 2021 11:53 am
Forum: Engine Tech
Topic: Burning Oil w/New Motor - Can't Diagnose
Replies: 20
Views: 905

Re: Burning Oil w/New Motor - Can't Diagnose

As advised, do the decel test ...... again, safely ...... and report back

If nothing else it should help point you in the right direction
by BCjohnny
Thu Jul 29, 2021 11:32 am
Forum: Engine Tech
Topic: Burning Oil w/New Motor - Can't Diagnose
Replies: 20
Views: 905

Re: Burning Oil w/New Motor - Can't Diagnose

Got some advice to "just drive it more" (only 140 mi on motor) to get them to seat If the bore is 'bad' ...... 'iron shell' burnishing etc .... you can drive it a 100k miles and the rings will never seat properly Have ~140 miles on the project (71 corvette) and have already pulled the motor a secon...
by BCjohnny
Thu Jul 29, 2021 10:15 am
Forum: Engine Tech
Topic: rolling road dyno ventilation question
Replies: 27
Views: 1140

Re: rolling road dyno ventilation question

I don't think anyone's disputing that the large paired vented 'discs' either side of the retarder dissipate the bulk of the energy absorbed, but the coils themselves can suffer significant heat soak, affecting their performance and subsequently retardation irrespective of 'disc' temperature As the w...
by BCjohnny
Wed Jul 28, 2021 6:22 pm
Forum: Engine Tech
Topic: rolling road dyno ventilation question
Replies: 27
Views: 1140

Re: rolling road dyno ventilation question

Would it be possible to make a coil for the retarder and make it water cooled as well? My first rolling road was made by Danish company H P Anderson (HPA) The 'coils' were part of the driven rotating assembly that reacted against an annular housing, which was watercooled Quite a neat set up, discou...
by BCjohnny
Wed Jul 28, 2021 2:11 am
Forum: Engine Tech
Topic: Burning Oil w/New Motor - Can't Diagnose
Replies: 20
Views: 905

Re: Burning Oil w/New Motor - Can't Diagnose

Now a bit worried the rings were not installed correctly. Machine shop advised me to run the motor for awhile and he’s seen motors resolve oil issues like this after sufficient break in. Not fully convinced of this. I think you already might possibly know the answer With a bad bore as the engine wa...
by BCjohnny
Sun Jul 25, 2021 3:48 am
Forum: Forum Help / Questions / Tips
Topic: Speedtalk Times out
Replies: 8
Views: 271

Re: Speedtalk Times out

No expert but I'm not sure it's server overload

As said, once you get the 'timed out' page if you hit the 'try again' button the page loads almost immediately, most times, if it's of any help
by BCjohnny
Sat Jul 24, 2021 3:05 pm
Forum: Engine Tech
Topic: Blaster Cabinet Help
Replies: 28
Views: 920

Re: Blaster Cabinet Help

Yes ...... whatever, David .......
by BCjohnny
Sat Jul 24, 2021 2:13 am
Forum: Forum Help / Questions / Tips
Topic: Speedtalk Times out
Replies: 8
Views: 271

Re: Speedtalk Times out

If it helps admin / maintenance ...... Out of the browsers I use FF seems the worst, whereas Brave, unusually, seems better at avoiding 'time outs' Edit : Definitely a problem with FF ..... still often timing out when you click the original page link, but often as not loading when clicking on the 't...
by BCjohnny
Sat Jul 24, 2021 2:07 am
Forum: Engine Tech
Topic: Blaster Cabinet Help
Replies: 28
Views: 920

Re: Blaster Cabinet Help

The 'airless' automatic paddle blasters mentioned almost exclusively use fine steel shot, or 'chopped steel shot grit' ...... usually again S230-330 sizing Pretty much any non-metallic media would struggle to have the kinetic energy to do the job ...... I'm not say it hasn't been used, just not that...
by BCjohnny
Fri Jul 23, 2021 2:10 am
Forum: Forum Help / Questions / Tips
Topic: Speedtalk Times out
Replies: 8
Views: 271

Re: Speedtalk Times out

Seen this mentioned before but never really had a problem ..... until last few days

Click on link, usually 'times out', click on the 'time out' notification and usually page opens, though not always
by BCjohnny
Thu Jul 22, 2021 4:19 pm
Forum: Engine Tech
Topic: Blaster Cabinet Help
Replies: 28
Views: 920

Re: Blaster Cabinet Help

Don't use sand, Silicosis kills people Glass bead IS silica, just the shape is different. The longer it is used it becomes silica dust. And, yes, silica dust is very bad for your health. Ergo the need for a good filter system. Incorrect [-X Silicosis is caused by breakdown of 'crystalline' silicon,...
by BCjohnny
Tue Jul 20, 2021 6:44 pm
Forum: Engine Tech
Topic: Blaster Cabinet Help
Replies: 28
Views: 920

Re: Blaster Cabinet Help

If you're wanting to re-create the look of 'original cast iron' the best media to get you close is S230-330 round steel cast shot Good for 'undercover' work too If you just want them clean then Alum Ox / Garnet, or more economically fine crushed glass, remove detritus faster but you lose the 'look',...
by BCjohnny
Thu Jul 15, 2021 2:00 pm
Forum: Engine Tech
Topic: Cross Drilled Crank Questions Again...
Replies: 6
Views: 399

Re: Cross Drilled Crank Questions Again...

With such a small engine 'flywheel weight' (polar moment) probably counts for more than the niceties of oiling With that in mind ..... and assuming the lighter four CW crank doesn't beat up bearings unnecessarily etc ...... I'd use that in preference Unless you're maintaining a constant high rpm, an...