chris.vredenbregt wrote:I have a QDH gearbox on my model G and it has a long 1st and goes easy up to 3th without a dip but I don't know the difference with other bikes as I never have driven one. Pitty you don't live here otherwhise you could have a go to compare
This is exactly what I'm worried about with my QL. I had intended to get experience with the bike before tearing into it for a complete rebuild but after only a couple of miles on the local road it found itself on the lift being disassembled.Ian.Taylor wrote:... the QDL box. ... you need to rev the poor motor to about 35-40 mph when you shift into 3rd as the rpm drops dramatically but the ol girl pulls it fine.
I infer from what you wrote that the "long 1st" isn't so long that it's objectionable. The 2.018 difference in gearing between low and high falls halfway between the 1.754 of the (infamous) Gold Star RRT2 and the 2.343 of the SCT. The former is quite a problem around town because it requires too much clutch slipping to get moving when the overall gearing is set for the highway (albeit, set for a bit higher top speed than the Ariel), while the latter is quite nice around town as well as on the highway. The reason for my question was to find if the QH's spread of ratios meant in practice it behaved more like the RRT2 or like the SCT.chris.vredenbregt wrote:I have a QDH ... it has a long 1st and goes easy up to 3th without a dip...
I've missed only a couple of Irish Nationals since 2000 -- unfortunately, I'll miss the next one because of the timing of the Cannonball -- so I know those hills and roads well. Although not the Rockies, the roads up the Conor and Healy Passes are about as steep as we should encounter so yours is a very useful comparison, especially knowing you did it two-up. Thank you.john.mitchell wrote:I did 3 Iridsh National rallie (about 120 miles per day) two up on a 1927 model E. with a QDH box. It was ideal and that is a pretty hilly rally
marcus whatling wrote:Going up faster hills in 3rd gear with the low ratio there is a long drop down to second gear(you need to slow down a lot) .With High ratio it,s not such a drop . Should be able to run a 24t Primary .
The QL and QH don't have speedometer drives, while the later QDL and QDH do. Since I don't have a drive from the gearbox I've added a sprocket and 90-deg. speedometer angle drive from the rear wheel that I'll use to operate an 80 mph Chronometric. Val Page designed the Black Ariel, and a decade later the BSA Gold Star, so although the S433/1/L speedometer from a 1952 'Road Model' Gold Star is age-inappropriate, it's designer-appropriate. I have a particular affinity for Gold Stars which is what dictated this choice of speedometers.Ian.Taylor wrote:Just a thought. If changing from a low ratio to a High ratio will that affect your speedometer reading?
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