Sorry - Going to bore you with a sprocket question AGAIN!

Max · Post by **Max** » Sun Aug 13, 2006 8:01 pm

GEAR 1 2 3 4 5 6

STD 60 90 114 135 151 169

15/44 52 78 99 118 132 148

15/43 53 80 102 120 135 151

15/41 56 84 107 126 141 159

16/43 57 86 109 128 144 161

these are at 9500 rpm and using the rolling radius of my back tyre (020).
Obviously these are theoretical as 169 with std power just aint gonna happen.
My storm on 15/44 and 104 at the wheel on rogers dyno, will pull 10000 in top gear on a slight decline slip streaming behind a GSXR1000. (approx 155)
He then pulled away from me quite quickly, b@st@rd.
Before anyone says how did I keep up accelerating up to that speed, my mate was doing a top gear roll on from 40 ish down this slope and I was using every gear I could find

Them Gixers r stupidly fast

Stormin Ben · Post by **Stormin Ben** » Mon Aug 14, 2006 12:55 am

Tempest wrote: Difficult (without trying) to know how much just 2 extra on the back will make (even noticable?)

2 extra is definitely noticeable. Thats what I did first and it was a tight fit on the std chain
When I was due a chain & sprockets I went with an extra link in the chain and a 45 rear
Personally I wouldn't go much lower if you do much motorway mileage coz the extra buzziness (its revving higher) gets irritating after a while

Tempest · Post by **Tempest** » Mon Aug 14, 2006 10:37 am

I'm just teetering on ordering a 43 tooth rear. But 1 thing I'm just wondering about.........

Steel or Aluminium?

I know I work with metals (we use a lot of Stainless and Titanium where I work, also some cobalt chrome) All for medical implants.

So, the thought of Aluminium (hard anodised) is a bit of a shock.

Before I commit to anything.

Can anyone reassure me that Renthal Hard Anodised (High Strength Enhanced 7075 T6 Aluminium Alloy) is actually going to last !!!!

I know it's a daft question really as if they didn't why would anyone buy them, but my 1st reaction would be, I want a steel one.

Thanks.

=========== EDIT ============

Comments like the 2nd posting down here:
http://www.vtr1000.org/phpBB2/viewtopic ... ht=renthal

Concern me.

If not Renthal, then what other make of 43 for a Firestorm rear?

Max · Post by **Max** » Mon Aug 14, 2006 10:40 am

I bought steel as it was cheaper

Stormin Ben · Post by **Stormin Ben** » Mon Aug 14, 2006 11:25 am

I bought hard anodised coz it was gold and matched the chain

{tart mode off}

I had a std alloy one initially and that did wear but this one is a lot better so you can put your mind at rest there
As for which to go for, you'd be hard pushed to notice the difference in performance between a steel and an alloy one (if that was you main reason for changing, look at a 520 pitch C&S instead)
Steel is cheaper but looks it too
{Blind date voiceover mode on}
The choice is yours
{Blind date voiceover mode off}

Tempest · Post by **Tempest** » Mon Aug 14, 2006 1:11 pm

Stormin Ben wrote:I bought hard anodised coz it was gold and matched the chain
{tart mode off}

I had a std alloy one initially and that did wear but this one is a lot better so you can put your mind at rest there
As for which to go for, you'd be hard pushed to notice the difference in performance between a steel and an alloy one (if that was you main reason for changing, look at a 520 pitch C&S instead)
Steel is cheaper but looks it too
{Blind date voiceover mode on}
The choice is yours
{Blind date voiceover mode off}

Thanks for that.

Just been up my local bike shop (Nice guy who runs it) and got a few bits (not sprockets)

Had a chat on the subject and he put Hardened Renthal Alloy on his ZX12R. Fine, but no way lasted as long as the steel one it replaced.

Think I've decided to do with steel.

Just need to find a UK supplier of a good make.

===== EDIT =====

Not wanting to bore everyone to death ;)

Just ordered a 43 tooth JT Rear Sprocket.

Model code: JTR 302-43

Four reasons why.

1: Guy I spoke of in the local bike shop said JT were good & lasted well.

2: Seem to sound resonable looking at their website:
http://www.jtsprockets.com/50.0.html

3: I currently have the 41 tooth version of this exact same sprocket so I know everything will work together well.

4: Only cost Â£20

Should have it later this week, so will be after some idiots guide to changing a rear sprocket soon if anyone could help

dookie · Post by **dookie** » Mon Aug 14, 2006 4:29 pm

I run a 43t on the back off my storm m8 and i like it a lot , improves the bike alround and makes 6th gear a worthwile effort rather than the sluggish overide it is as standard.

Stratman · Post by **Stratman** » Mon Aug 14, 2006 4:54 pm

I put a 2 tooth bigger on the back. Not a vast difference percentage wise, but so much better to ride in terms of tractability - no need to dip the clutch in 2nd on a tight slow turn at junctions etc and pulls like a fright train after 100 mph as in the torque range.

Excellent mod. Wish I'd done it sooner. I have a TDM900 as well and I'm going to do the same to that.

Tempest · Post by **Tempest** » Mon Aug 14, 2006 5:11 pm

dookie wrote:I run a 43t on the back off my storm m8 and i like it a lot , improves the bike alround and makes 6th gear a worthwile effort rather than the sluggish overide it is as standard.

Funny, as on "Normal" A roads, sometimes I'm going along, and think, hmmm, wonder what gear. Click. Into 5th, then click into 6th...

I was in 4th perfectly happy behind a line of cars.

I feel the extra 2 teeth will help just a bit at the lower end (as you say around roundabouts etc) without killing the top end for relaxed motorway work (when I do it occasionally)

to be honest, 99% of my riding is A/B roads anyway.

Tempest · Post by **Tempest** » Mon Aug 14, 2006 5:13 pm

Stratman wrote:
Excellent mod. Wish I'd done it sooner. I have a TDM900 as well and I'm going to do the same to that.

Ahhhh, Another TDM and Firestorm owner like myself.

Albeit I've got a TDM850 rather than a 900

Although I love my Storm, the TDM is like a comfy sofa when you get onto it after riding the Storm

Stratman · Post by **Stratman** » Mon Aug 14, 2006 5:37 pm

You'll find cupasoop is another one of us as well! The TDM is a real laugh - comfy (although I will get some gel in the seat over winter) quick enough to embarrass crap riders on sports bikes and last night I filled up after 204 miles and still had 3 litres left, so around 240 mile range!

Can't beat the Storm on a Sunday morning blast though!

cupasoop · Post by **cupasoop** » Mon Aug 14, 2006 7:28 pm

Stratman wrote:last night I filled up after 204 miles and still had 3 litres left, so around 240 mile range!

yeh, tdm's rool KO.............or is that dislexiks?

Tempest · Post by **Tempest** » Mon Aug 14, 2006 7:32 pm

cupasoop wrote:
Stratman wrote:last night I filled up after 204 miles and still had 3 litres left, so around 240 mile range!
yeh, tdm's rool KO.............or is that dislexiks?

There can be a lot of confusion with Dyslexia

MrMastodon · Post by **MrMastodon** » Mon Aug 14, 2006 10:49 pm

Erm, I had a TDM850 before the VTR and yes, I loved it. Thats why I had to have another bug twin (fnar). Very under-rated bike indeed, lovely engine. Nice and upright, so you could really fling it around slow country roads and really get a shift on. And you could crack the throttle open and spin the back up coming out - an absolute hoot (Avons lack of grip helped with this..!)

And then I high-sided it...

Not myself to blame at all. It was all the bikes fault. Ahem.