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Gallery, Projects and General => Neat Stuff => Topic started by: jim on June 03, 2011, 04:51:57 AM

Title: cheap rev counter!
Post by: jim on June 03, 2011, 04:51:57 AM

http://cgi.ebay.co.uk/ws/eBayISAPI.dll?ViewItem&item=120443914027&ssPageName=STRK:MEWNX:IT#ht_1118wt_1139 (http://cgi.ebay.co.uk/ws/eBayISAPI.dll?ViewItem&item=120443914027&ssPageName=STRK:MEWNX:IT#ht_1118wt_1139)

just bought one of these (for one of my motorcycles). its the first cycle speedo that i've seen that has a RPM function.

could be a cheap and easy way of doing a rev counter?

bothe the lathes and mill have speed readouts, so not much point in me trying to fit one to one of my machines!

Title: Re: cheap rev counter!
Post by: andyf on June 03, 2011, 06:28:08 AM

Hi Jim,

Any idea of the max rpm it will display? I used a cycle computer (without an rpm function) on my old mill, making it believe it was on a 1667mm circumference wheel and reading out in kph. Multiplying the display by 10 then gave the rpm (e.g. 45.6kph = 456rpm). But it didn't expect anyone to pedal faster than 99.9 kph, limiting it to 999 rpm.

Wilkinsons sell one with "AS 11G" on the front for £8 which has an rpm function. I've got one of those now, and despite what its Chinglish instructions say, it will go up to at least 3000rpm.

One note of caution: the sensor heads contain a tiny glass encapsulated reed switches. Very fragile, as I found out the hard way.

Andy
 

Title: Re: cheap rev counter!
Post by: metalmad on June 08, 2011, 04:40:31 AM

HI guys
does anybody know of a cheap engine taco that can be used on singles as well as multys?
Pete

Title: Re: cheap rev counter!
Post by: jim on June 08, 2011, 08:47:36 AM

i would love to know myself!!

i've bought a cheap one before for multi cylinder and tried to adjust it on the back, does anyone know how they could be adjusted ???

Title: Re: cheap rev counter!
Post by: John-Som on June 08, 2011, 09:27:57 AM

Anyone fitting an RECL electronic ignition system can buy a plug in digital rev counter. I am currently building the Upshur vertical 4 stroke and the rev counter is a neat addition and good value at £11.00 Inc postage.

http://www.apacheaviation.co.uk/Ignition_Systems/ignition_systems.html

John-Som