Royal Enfield Electric Starter Upgrade kit
15th February, 2017
The Electric Starter Upgrade kit (Alton), exclusive to Hitchcocks Motorcycles, has been developed to alleviate the problem of sprag clutch failure on electric start Bullet and Electra X engines. This kit, which has taken four years in development and testing, comprises a replacement idler gear; a replacement driving gear; an improved starter solenoid; and a set of improved electrical leads to provide maximum current transfer.
Many owners of pre-EFI electric start Bullet and Electra X engines have experienced repeated and expensive failures of the one-way sprag clutch bearing and gears. While the sprag clutch bearing itself is a satisfactory item, they are easily damaged when forced to run ‘backwards’ by an engine ‘kick-back’. Engine ‘kick-back’ may be caused by any number of factors and is difficult to eliminate entirely. The bearing and gears needed for these repairs are amongst the most expensive single items in these engines and with labour costs repair bills run into hundreds of pounds. Even after repair the sprag clutch is liable to fail again (and again!) at any time.
The Alton Upgrade kit includes an idler gear incorporating a cush drive arrangement with 6 shock absorbing buffers - see photo below. The buffers cushion the effects of an engine ‘kick-back’ to safeguard against sprag clutch failure.
The Alton Upgrade kit will not only help protect against sprag clutch failure from engine ‘kick-back’ but the upgrade kit will also help with starting in general as a result of a nunber of other improvements incorporated in the kit components.
The Electric Starter Upgrade kit (Alton) is available exclusively from Hitchcocks Motorcycles - part number 90158 at £499.00 plus postage and VAT (Price correct February 2017)
Please note: the Electric Starter Upgrade kit (Alton) does not include the sprag clutch assembly and does not include the starter motor.
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