Plan B

[old white 73]

Still looking for the right crank so....... find something else to do, lets cut up a gearbox. Drag 1 sierra box out into daylight & take to it with a hacksaw.
Off now to find someone to weld it back together.

[JoKer]

hah neat! choppy chop cut cut

[old white 73]

Lol, bits been dropped off, now just have to wait for the call when its done- probably after easter cos they buzy sorting racecars etc.

[old white 73]

Thought i might track fuel use before & after box swap- a week of town/country running round netted @ 28 mpg .
Might have to fix the bike again, lol

[avenga]

I saw quite a drop in fuel usage when I swapped over to my Sierra gearbox.

I dropped from 13 L/100KM to 11 L/100KM, mind you I have a very thirsty dual dellorto setup. I find that I only use 5th when I am on the motorways or out in the country, I don't really get up in to 5th until I am over 80KM.

[old white 73]

Cruised up to hillybilly hell-(Gore) to vintage car swapmeet, nothing i wanted this year, got 39mpg goin up at an indicated 60 mph (@ 95 kmh)-dry calm morning, coming back on a wee tiki tour was 33mpg.

Surprised it could still do that well considering its overall health

[oldschool]

That's pretty good at 60mph..have you got a 3.7 diff fitted?!

[old white 73]

Dunno, did cheat a bit on tyre pressures @ 34 front & @ 28 back & its fairly flat up to Gore with hardly any traffic this morning

[old white 73]

Bigger surprise today, just been round the block yesterday @ 324 miles (@500ks) Invers, Alex, Cromwell, Queenstown & back to Invercargill, 3 up, 1 tank - 34.2mpg, (8.3L/100k ?) without trying too hard either, silly thing is i know by ditching the alloys for the skinny standard wheels is worth a 1.5 mpg improvement.

[blekkja]

How skinny? 155? I don't think I could handle that. No matter the fuel saving.

[JoKer]

weight also, tho yea 185's min for me

you can also drive different with passengers, i know i do

[old white 73]

Passengers were lightweight lol. 165's were old wheels, 155's belong on 850 minis,
currently on 185's a good alround compromise  between economy v's traction/grip- theres some nice windy roads down here, lol.

[blekkja]

I run 175/185. Like the little bit smaller size on the front to make the steering feel a bit better.

[oldschool]

Increasing the tyre pressures improves the fuel economy, steering weight and tyre life too...40 psi front 35 psi rear works well I've found.

[old white 73]

Got a call- box ready & all glued back together, now to remember how i took it to bits + make an end plate coz box didn't have 1 when i got it