Power-jet controller system
RS125 / RS250 Honda
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Power-jet controller system for standard Honda RS125 / RS250
This is a great little add on for the RS125 & RS250 Honda.
Overview
With higher compression fuels there is a requirement to lower the power-jet cut-off rpm point.
This is not adjustable on the standard ignitions.
The Power-Jet controller system allows you to change the power-jet cut-off rpm point.
The unit also includes a lower throttle roll-off point to reduce engine damage on slow rolling-off the throttle.
On the RS125 PJ controller system a single 16 position switch selects the RPM point.
On the RS250 PJ controller system 2 separate 16 position switches control each power-jet independently.
Overview
With higher compression fuels there is a requirement to lower the power-jet cut-off rpm point.
This is not adjustable on the standard ignitions.
The Power-Jet controller system allows you to change the power-jet cut-off rpm point.
The unit also includes a lower throttle roll-off point to reduce engine damage on slow rolling-off the throttle.
On the RS125 PJ controller system a single 16 position switch selects the RPM point.
On the RS250 PJ controller system 2 separate 16 position switches control each power-jet independently.
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Model A
Switch Position 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 |
For Leaded Fuel
Cut-off RPM 11,500 11,600 11,700 11,800 11,900 12,000 12,100 12,200 12,300 12,400 12,500 12,600 12,700 12,800 12,900 13,000 |
Model B
Switch Position 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 |
For Un-Leaded Fuel
Cut-off RPM 12,000 12,100 12,200 12,300 12,400 12,500 12,600 12,700 12,800 12,900 13,000 13,100 13,200 13,300 13,400 13,500 |
Operation
. The power-jet un-powered is adding fuel, on powering the power-jet this shuts off this fuel jet.
. Below the Low RPM level at 3000 RPM the jet is not powered to ease starting on generator.
. If the throttle is disconnected the jet is down powered to add fuel and ensure a safe fuel level.
. In normal operation as the throttle level is increased the jet opens (down powered) to add fuel, on decreasing (roll-off) the power jet stops adding fuel at a lower throttle level to reduce the leaning off ( and subsequent detonation if fuel permits).
. With high throttle and increasing RPM the jet will cut-off at the RPM level set by the selector switch, if the RPM falls at this throttle then the jet will operate at 300RPM below the cut-off point selected, this reduces the jittering if the RPM is held around the cut-of point.
. The power-jet un-powered is adding fuel, on powering the power-jet this shuts off this fuel jet.
. Below the Low RPM level at 3000 RPM the jet is not powered to ease starting on generator.
. If the throttle is disconnected the jet is down powered to add fuel and ensure a safe fuel level.
. In normal operation as the throttle level is increased the jet opens (down powered) to add fuel, on decreasing (roll-off) the power jet stops adding fuel at a lower throttle level to reduce the leaning off ( and subsequent detonation if fuel permits).
. With high throttle and increasing RPM the jet will cut-off at the RPM level set by the selector switch, if the RPM falls at this throttle then the jet will operate at 300RPM below the cut-off point selected, this reduces the jittering if the RPM is held around the cut-of point.
Wiring
The unit connects to the Taco to obtain the power and the rpm signal, the unit also connects to the throttle signal to control the throttle points, the unit then powers the power jet directly. Mount the unit in the nose of the motorcycle
Connections
In the nose cone, at Rev Counter or Wire Harness to Rev Counter connection:
Green to Rev Counter Green wire
Blue to Rev Counter Blue wire
Black to Rev Counter Black wire
In the air-box:
Yellow to yellow with blue at the throttle
Disconnect the 2 pin power-jet connection
Connect the black to power jet black (not connected to the loom)
Connect grey to power jet grey (not connected to the loom)
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Connections
Voltage range Input Current Drive current3A maximum Temperature range Weight Low RPM level Throttle fail below Operational throttle Rpm Hysteresis |
Connections
9V to 18V 5mA nominal 3A maximum -10 deg Celsius to +130 deg Celsius Approx 50g 3000 RPM 200mV 2.9V throttle-on 1.9V throttle-off 300RPM |
In Stock now
RS125 Honda Power-jet controller system : £200.00 + VAT
RS250 Honda Power-jet controller system : £240.00 + VAT
Exports of all parts supplied outside of UK, to EU Countries, USA, Australia, South Africa, Asia etc are exempt from UK VAT and will be charged 0% VAT.
On arrival to your destination country, you may be asked to pay additional duties and taxes by customs, before the shipment is delivered.
Import tax, customs & duties regulations vary from country to country.
Payment of all Import tax, customs & duties charges are the responsibility of the customer.
On arrival to your destination country, you may be asked to pay additional duties and taxes by customs, before the shipment is delivered.
Import tax, customs & duties regulations vary from country to country.
Payment of all Import tax, customs & duties charges are the responsibility of the customer.
SP125 Limited
22 Walker Wood, Baildon, Shipley, West Yorkshire, BD17 5BE, England
Telephone 01274 583231 steve@sp125racing.com Mobile 07738 626165
22 Walker Wood, Baildon, Shipley, West Yorkshire, BD17 5BE, England
Telephone 01274 583231 steve@sp125racing.com Mobile 07738 626165
SP125 Limited Disclaimer
Honda, HRC and all other parts supplied by the SP125 Limited are not guaranteed when used in competition events.
As such, it is a condition of our making all parts available that it is solely the decision of each individual, rider, team member or
team whether they choose to use any part supplied and in doing so, absolve the manufacturer and SP125 Limited of any or all
such claims, including damage to equipment and/or injury to personnel irrespective of how caused.
All parts remain property of SP125 Limited until paid for in full.
All 'special order' parts, that are ordered specially under the instruction of the customer, are non returnable and non refundable.
Honda, HRC and all other parts supplied by the SP125 Limited are not guaranteed when used in competition events.
As such, it is a condition of our making all parts available that it is solely the decision of each individual, rider, team member or
team whether they choose to use any part supplied and in doing so, absolve the manufacturer and SP125 Limited of any or all
such claims, including damage to equipment and/or injury to personnel irrespective of how caused.
All parts remain property of SP125 Limited until paid for in full.
All 'special order' parts, that are ordered specially under the instruction of the customer, are non returnable and non refundable.
