40 T rear sprocket

GaryCulb
250cc
250cc
Posts: 72
Joined: Thu Aug 17, 2017 11:19 am
Country: USA
City: Sumter
Year: 2017
Location: Sumter, SC

Re: 40 T rear sprocket

Post by GaryCulb » Sat Feb 03, 2018 2:17 am

Aussie Dave,

Well I’ll be damed!!

Thanks for the data. You are Correct. SuperSprox Rear Sprocket Engraving Goes IN!! Only had a couple hundred miles on that rear 40T/ 525 Black SuperSprox sprocket before the flip??

Best,

Doc :oops: :oops:


INCORRECT:

Image


CORRECT:

Image

Aussie Dave
900cc
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Joined: Sat Mar 04, 2017 7:30 am
Country: Australia
City: Brisbane
Year: 2017

Re: 40 T rear sprocket

Post by Aussie Dave » Sat Feb 03, 2018 8:34 pm

Cheers mate.......I nearly did the same........looked so pretty I almost whacked it on without a thought, but a little voice from behind said 'wait a minute.......' :lol: ........ must have been my cousin the bike mechanic, keeping an eye on my feeble attempts to emulate his ability and knowledge..... :lol:

Super Sprox could have put an instruction sheet or a warning sticker on.....but I suppose they figure we should know...... :roll:
Current delights...1290GT-2017, CBR1100XX-2005

Prev loves...Capo1200TP-014, CBR11xx-002, 2xFZR1000genisis-94, FJ1200-89, FJ1100-84, XS1100P, VF1000F-83, CX500, VF750S, KZ1000J1-81, KZ1000ST-79, CB750F2-77, CB360T-74, CB175.. started it all in 1974 ;)

Aussie Dave
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Country: Australia
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Year: 2017

Re: 40 T rear sprocket

Post by Aussie Dave » Sat Feb 10, 2018 6:28 am

Oh yessssss......thaaaat's nailed it :D

Short ride via the motorway to Saturday coffee with world tourer mates and I had almost forgotten I had installed the 40T until I realised the Gt was much more civilised in city traffic :o

It is heaps smoother to ride at traffic speed limits.....reason being, the motor is now in the sweet spot more readily than before (with 38T).

So, at 100kph Aussie national speed limit, my tach shows 4500rpm (was 4250 with 38t).

At 60kph suburban traffic limit, in 3rd gear as usual, 4000rpm on tach (was 3750) = bike felt totally at home whereas before it was only just happy and i had to be prepared to downshift to 2nd if I needed to accelerate with vigour. Similarly for 80kph in 4th..4250rpm (i think..can't recall now but it was all good).

Totally recommend Aussie GT owners do the 40T rear sprocket change unless you have access to (ie; no eyes watching ;) ) open road territory........

Euro riders have higher Motorway/Autostrada limits and would probably prefer OEM38T or maybe 39T - but for Aus, the 40 is great (just forget about 6th unless you want to split the gearbox and change the internal ratios or have a tail wind riding downhill :lol: ).
Current delights...1290GT-2017, CBR1100XX-2005

Prev loves...Capo1200TP-014, CBR11xx-002, 2xFZR1000genisis-94, FJ1200-89, FJ1100-84, XS1100P, VF1000F-83, CX500, VF750S, KZ1000J1-81, KZ1000ST-79, CB750F2-77, CB360T-74, CB175.. started it all in 1974 ;)

DaveW
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Country: New Zealand
City: Woodend
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Re: 40 T rear sprocket

Post by DaveW » Wed Feb 14, 2018 6:14 am

I got hold of supersprox var email today to get a 40 as out of stock 😂
Their response was the next order due in was April .
I've got my name on one of them.
With a 17/38 its 4th gear around our roads.

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