开云体育Jim, ? What decoder(s) are you using? ? Are you using ‘Basic Speed Control” or the ‘28-Step Speed Table?’ ? Ross ? From: [email protected] <[email protected]> On Behalf Of
Jim Kirwan via Groups.Io
Sent: Sunday, August 18, 2019 2:54 PM To: [email protected] Subject: [jmriusers] Speed Matching ? I have 2 Kato locos (same model). One starts moving at SS 1, while the other doesn't move until SS 6. What is the best way to speed match these two?? Thanks. |
开云体育Dan Thank you for sharing the Speed Matching link Very useful guide John Pearson ? From: [email protected] <[email protected]> On Behalf Of Dan Howard via Groups.Io ? Jim, |
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Jim,
On 19 Aug 2019, at 4:54 AM, Jim Kirwan via Groups.Io <cact25@...> wrote:This document is also helpful with speed matching, particularly if locos have a mixture of brands of decoder, as different manufactures have minor differences in the way settings interact: <> Note as well that the writer of the NCE document expresses opinions about whether BEMF should be on or off during speed matching which may not be appropriate for some brands models. For example, with the decoders I mainly use if you try to speed match with BEMF off it is very difficult to get repeatable results (you'll get a different settling each time you try), the speed performance and matching will be way off when you reenable BEMF and you'll get poor slow running behaviour if you leave it off. Dave in Australia |
开云体育Dave in Australia wrote: “Note as well that the writer of the NCE document expresses opinions about whether BEMF should be on or off during speed matching which may not be appropriate for some brands models. For example, with the decoders I mainly use if you try to speed match with BEMF off it is very difficult to get repeatable results (you'll get a different settling each time you try), the speed performance and matching will be way off when you reenable BEMF and you'll get poor slow running behaviour if you leave it off.” ? I second that. Changing BEMF parameters will usually change the speed response curve, thus changing the speed table settings needed for speed matching. My experience is (1) Adjust BEMF to give the throttle response you desire, particularly at slow speeds, then (2) do your speed matching without changing the BEMF. ? Also, keep in mind that for many Digitrax decoders the BEMF may be changed when you use advanced consisting. See CV57 in the Digitrax manuals. You will need to set that so you have the same BEMF for advanced consisting as you have for address or basic (universal) consisting. ? Mark Granville |
Jim Kirwan