The Rolex Forums   The Rolex Watch

ROLEXROLEXROLEXROLEXROLEXROLEXROLEXROLEXROLEXROLEXROLEXROLEX


Go Back   Rolex Forums - Rolex Watch Forum > Other (non-Rolex) Watch Topics > Panerai Discussion Forum

Reply
 
Thread Tools Display Modes
Old 4 June 2019, 11:44 PM   #1
Howlerbro
"TRF" Member
 
Join Date: Apr 2018
Location: CA
Watch: BLNR GMT II
Posts: 84
Knot tach scale for PCYC watches - question around usage

Posted this over on the Panerisiti forum last night but no responses so figured I’d post here as well. Something I haven’t been able to wrap my brain around since acquiring my 654, and I can be quite thick so totally plausible that I am just not understanding how the scale is meant to be read. The conversion from knots to MPH is about 1.15, so 30 knots as measured on the tach would equate to about 34 mph - but that 30 on the rehaut is near where 600+ mph would be. Is this an error on Panerai’s part or am I just missing something blatantly obvious? Is the user just supposed to convert to true knots by multiplying by 60? If so it’s almost like this is an aviation timepiece vs regatta




Sent from my iPhone using Tapatalk
Howlerbro is offline   Reply With Quote
Old 5 June 2019, 04:11 AM   #2
ASW1
"TRF" Member
 
Join Date: Aug 2007
Location: UK
Posts: 419
Hiya - the key is to realise that there are two hands, an upper blued hand which is seconds and a lower gold hand which is minutes. A boat compared to a Daytona race car is not that quick, so it's the minute hand that is relevant:

30 knots = 2 mins to do 1 nm
3 knots = 20 mins to do 1nm
2 knots = 30 mins to do 1 nm

Hope that helps clear the head ;)
ASW1 is offline   Reply With Quote
Old 5 June 2019, 04:43 AM   #3
Howlerbro
"TRF" Member
 
Join Date: Apr 2018
Location: CA
Watch: BLNR GMT II
Posts: 84
Quote:
Originally Posted by ASW1 View Post
Hiya - the key is to realise that there are two hands, an upper blued hand which is seconds and a lower gold hand which is minutes. A boat compared to a Daytona race car is not that quick, so it's the minute hand that is relevant:

30 knots = 2 mins to do 1 nm
3 knots = 20 mins to do 1nm
2 knots = 30 mins to do 1 nm

Hope that helps clear the head ;)
Makes a TON more sense now, thank you. For a moment I was starting to think that Panerai let these things out the door with an incorrect register!
Howlerbro is offline   Reply With Quote
Reply


Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump

Takuya Watches

Bobs Watches

My Watch LLC

OCWatches

DavidSW Watches

Coronet


*Banners Of The Month*
This space is provided to horological resources.





Copyright ©2004-2024, The Rolex Forums. All Rights Reserved.

ROLEXROLEXROLEXROLEXROLEXROLEXROLEXROLEXROLEXROLEXROLEXROLEX

Rolex is a registered trademark of ROLEX USA. The Rolex Forums is not affiliated with ROLEX USA in any way.