How i solved rostra cruise speed bleed down and excesive speed surging problems.
I recently installed rostra cruise and i had two major issues to solve. I search the web excessively and did not seem to get any real answers. So i would like to make this post so hopefully others will benefit from my pain. Lol. I have a Rostra electric cruise on a 2007 st1300 , i used a w2 pulse tracker to buffer and divide the vehicle speed sensor output.
1. first problem was that the cruise control would engage however the speed would gradually bleed down .
My fix for this was to configure the dip switches so that it wa set up for 15000 pulses per km and of curse to adjust the divder accordingly.
This for what ever reason solved the speed bleed down problem originally it was set to 38600 m/24000km setting.
2.next issue was that the bike had excesive surging combined with the fact that it alwas seemed to engage at a speed lower then the set speed. Then surge its way up to the commanded / set speed.
Played with may combinations of settings but finally settled on changing the engine set up timer to 8 cylinder high and this seemed to help alot. However it did not feel like it should . I turned my attention to the throttle set up original i used a chain bead set up,to compensation for the differance in cable travel. But i could not help but wonder if this was the main issue. I imagined it to be the same as a auto pilot with a lose elevator servo cable which would of course cause porpoising. So i fabricated a throttle leaver out of steel being very careful to make notched hole to match the throttle body shaft. The result was successful and i now have a very smooth cruise contol. Hope this helps others see attached photos, one shows previous install two shows the fix throttle close and open. P.S after throttle chage i did reselect 4 cylinder low.
My dip settings are. 001110100100.
I recently installed rostra cruise and i had two major issues to solve. I search the web excessively and did not seem to get any real answers. So i would like to make this post so hopefully others will benefit from my pain. Lol. I have a Rostra electric cruise on a 2007 st1300 , i used a w2 pulse tracker to buffer and divide the vehicle speed sensor output.
1. first problem was that the cruise control would engage however the speed would gradually bleed down .
My fix for this was to configure the dip switches so that it wa set up for 15000 pulses per km and of curse to adjust the divder accordingly.
This for what ever reason solved the speed bleed down problem originally it was set to 38600 m/24000km setting.
2.next issue was that the bike had excesive surging combined with the fact that it alwas seemed to engage at a speed lower then the set speed. Then surge its way up to the commanded / set speed.
Played with may combinations of settings but finally settled on changing the engine set up timer to 8 cylinder high and this seemed to help alot. However it did not feel like it should . I turned my attention to the throttle set up original i used a chain bead set up,to compensation for the differance in cable travel. But i could not help but wonder if this was the main issue. I imagined it to be the same as a auto pilot with a lose elevator servo cable which would of course cause porpoising. So i fabricated a throttle leaver out of steel being very careful to make notched hole to match the throttle body shaft. The result was successful and i now have a very smooth cruise contol. Hope this helps others see attached photos, one shows previous install two shows the fix throttle close and open. P.S after throttle chage i did reselect 4 cylinder low.
My dip settings are. 001110100100.
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