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Invalid Carriages & other related conveyances / Re: The Hammond Harding finally gets its turn
« Last Post by Stuart Cyphus on March 19, 2021, 05:41:04 pm » And so with spring sprunging all over, its back to inserting the cheapo chinese Honda-Villers clone engine properly, and finally sorting out that back sprocket. A weekend spent hacking away with hacksaw & drilling with Black & Decker, two six inch bolts and emptying the shed of all 17mm nuts and the engine is in firm & solid with reliable 420 chain slung between. For those pondering what sprocket & what chain fitted, the sprocket is from a 2001 Derbi scooter & the chain from a Yamaha FS1E no less.
With Hamond Harding featuring 19-inch rear wheels (21-inches overall if tyre height is also included), an engine running at 3,600rpm flat out, driving a 10-tooth centrifugal cluch and a 52-tooth rear sprocket, an hour spent browsing through varius speed/gearing caculations would seem to suggest Hammond Harding may well be capible of pulling some 50mph top speed with a good run-up! Tis going to be interesting when I fire that engine up for the first time in a few days time methinks... But certainly the target 25-30mph normal use cruising speed looks eminantly sustainable.
Meanwhile, a throttle cable takes shape right here right now, using a suitably converted 9ft long heavy duty tandem bicycle brake cable no less. Well, it was there in the shed & if it can stop a fully-loaded tandem it can take care of a dinky little throttle arm...
Stay tuned folks for the next exciting instalment of the resurection of Hammond Harding as its only a matter of days now til it goes broom broom again for the first time in at least three & half decades...
With Hamond Harding featuring 19-inch rear wheels (21-inches overall if tyre height is also included), an engine running at 3,600rpm flat out, driving a 10-tooth centrifugal cluch and a 52-tooth rear sprocket, an hour spent browsing through varius speed/gearing caculations would seem to suggest Hammond Harding may well be capible of pulling some 50mph top speed with a good run-up! Tis going to be interesting when I fire that engine up for the first time in a few days time methinks... But certainly the target 25-30mph normal use cruising speed looks eminantly sustainable.
Meanwhile, a throttle cable takes shape right here right now, using a suitably converted 9ft long heavy duty tandem bicycle brake cable no less. Well, it was there in the shed & if it can stop a fully-loaded tandem it can take care of a dinky little throttle arm...
Stay tuned folks for the next exciting instalment of the resurection of Hammond Harding as its only a matter of days now til it goes broom broom again for the first time in at least three & half decades...