Voxan gearing

[Rainbow Wizard]

Today saw le Voxan receive its original 40 tooth sprocket. Lindsay of Chch M'cycles fame told me he'd changed to one "a couple o' teeth different" so as to get more acceleration and punch out of the corners. Well his couple o' teeth turned out to be more like half a damn palate's worth! Off with the 45 and the 40 tooth sure tames Voxan down, but the front wheel still dances on a change to 2nd. It's early days yet as this sodding wind disinclines one to going that far, and it's cold! But the bike feels much smoother with the less aggressive engine braking when changing down for corners being the most noticeable difference.

I looked in the book but it doesn't say what teeth the front sprokets have from standard, but I'd be interested to read other's comments on the whole torquey 1000cc upwards V twin gearing issue.
Thanks.

[kerryg]

I'd be interested to read other's comments on the whole torquey 1000cc upwards V twin gearing issue.
Thanks.


I dropped down 2 teeth on the rear sprocket on the 851. It was too tall in 1st and difficult to launch (had to give it quite a fist-full of throttle and slip the clutch otherwise it would bog down) and the improvement is quite noticeable. A satisfactory result. Raises the revs at motorway speed a tad but not so as you'd notice. Guy at the shop told me the tall factory gearing is something the factory did to meet a noise regulation (lowering the revs at a given road speed =less noisy) for race homologation or something.

[vifferman]

Guy at the shop told me the tall factory gearing is something the factory did to meet a noise regulation (lowering the revs at a given road speed =less noisy) for race homologation or something.Same for most bikes. Firestorms are WAAAAY overgeared, so a good cheap performance enhancement is to go up 2 teeth on the back sprocket or down 1 on the front (what I did) or both. :eek:
Makes a huge difference having a bike geared correctly (or correctly geared) for what you're using it for. :yeah:

[Rainbow Wizard]

Same for most bikes. Firestorms are WAAAAY overgeared, so a good cheap performance enhancement is to go up 2 teeth on the back sprocket or down 1 on the front (what I did) or both. :eek:
Makes a huge difference having a bike geared correctly (or correctly geared) for what you're using it for. :yeah:

OK then. Turns out Chch Motorcycles had it at 2.5:1 and standard is 2.22:1 so if I put Lindsay's 45 tooth back on and go UP one on the primary to offset some of the bite I'll end up with 2.368:1 and I'll get back some acceleration and maybe drop off a bit of top-end speed. Who but racers need to do 230 odd k's anyway?

[PSYCHO]

I dropped down 2 teeth on the rear sprocket on the 851. It was too tall in 1st and difficult to launch (had to give it quite a fist-full of throttle and slip the clutch otherwise it would bog down) and the improvement is quite noticeable. A satisfactory result. Raises the revs at motorway speed a tad but not so as you'd notice. Guy at the shop told me the tall factory gearing is something the factory did to meet a noise regulation (lowering the revs at a given road speed =less noisy) for race homologation or something.

Don't you mean added 2 teeth to the rear?

Gearing is a personal thing I reackon. I have a couple of different gearing combos I use .