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Old 03-22-2013, 01:54 PM   #16
Clay Spinner
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More....more..
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Old 03-22-2013, 02:06 PM   #17
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Quote:
Originally Posted by Clay Spinner View Post
More....more..
Yes please
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Old 03-25-2013, 11:14 AM   #18
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woot
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Old 03-25-2013, 07:10 PM   #19
Ras Thurlo OP
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Location: Hillcountry, Italy
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Front Wheel

Front wheel is a 21x 1.6 Excel rim with Talon Hub.

Sanity check that the new Hub is the same as the original KTM, by placing OEM disk onto mounting points:

[IMG] photo talon2_zps4e082ee0.jpg[/IMG]



Have a problem with the spindle tube (whatever its formal name is).

Top tube is correct width, but unfortunately 20mm internal diameter. Lower tube is correct 17mm diameter, but wrong width. Awaiting replacement from helpful guys at Talon:

[IMG] photo talon3_zps2eadaa47.jpg[/IMG]

Ras Thurlo screwed with this post 03-26-2013 at 08:21 AM
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Old 04-04-2013, 05:17 AM   #20
Ras Thurlo OP
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Brakes

Front:
320mm disk, HE relocation bracket, Brembo calliper all courtesy of Boxer Toko:

[IMG] photo diskbrake_zpse83bd0f5.jpg[/IMG]

Rear:
Inverted rear lever

[IMG] photo IMG_0021_zpsaf6fc1c4.jpg[/IMG]
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Old 04-04-2013, 08:24 AM   #21
Ras Thurlo OP
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Gearing

Gearbox:
lower 1st, +5% higher 5th

already have the higher 5th on my current 100GS and for me its a no brainer, would even have liked the overdrive feel of a +10% 5th, but was told that this cog has a knock-on effect on the whole gearbox (for reasons that I don't really understand).

ended up going for the lower 1st, which was more of a deliberation, see below.


Final Drive:
3.20:1 ratio, (32/10)

I know this ratio well from my current off-road R80GS and generally like it. The few times I have taken my city R100GS off-road I found the 3:09:1 (34/11) final drive too tall. I spend a fair amount of time in low revs second gear and kept getting caught out by the 100GS gearing.

I am prioritising off-road use on this rebuild bike, but with a wider dual-purpose bandwidth than my R80GS. So I thought that the G/S 3.36:1 (37/11) final drive will be too short for this bike as I intent to enjoy the engine on more open tracks.

Therefore settled for the 32/10, on the assumption that the move to an 18" rear wheel will have the effect of increasing the gearing to somewhere between the feel of a stock 80GS and 100GS.

I ended up going for a lower 1st largely as a defensive measure. On my 80GS do not feel the need for it, even if I ride on very hilly ground and would benefit from the engine braking downhill. Given that the effective gearing on this rebuild will be a bit taller, I went for the safe option.

This is good in theory, but may leave me with a gap between upper 1st and low 2nd, which could suck.

Guys - pls let me know if my understanding/logic is wrong

also any comments based on experience would be interesting

[IMG] photo IMG_0021_zpsaf6fc1c4.jpg[/IMG][/QUOTE]
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Old 04-04-2013, 08:32 AM   #22
Airhead Wrangler
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Damn! What gauge are those spokes? They look pretty stout. Did you have to drill the hub to fit those? As for the gearing question, it sounds like you're in the ballpark, but you'll just have to try it to find out if it's "right."
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Old 04-04-2013, 08:38 AM   #23
Ras Thurlo OP
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Quote:
Originally Posted by Airhead Wrangler View Post
Damn! What gauge are those spokes? They look pretty stout. Did you have to drill the hub to fit those? As for the gearing question, it sounds like you're in the ballpark, but you'll just have to try it to find out if it's "right."
went for heavy duty badboi spokes and yes had to drill hub to get them in
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Old 04-04-2013, 11:46 AM   #24
Prutser
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I had the 32/10 with the lower first gear. After my summer trip the first thing I did was put back the 37/11.
The 32/10 was ok but I do like the shorter gearing for technical tracks.
I don't think the difference between the first and second gear will be to big.

Great looking wheels with those fat spokes Ras
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Old 04-04-2013, 01:26 PM   #25
Clay Spinner
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I too am at odds about putting in the lower 1st on the 37:11 final drive... I don't want it to be too low. In the end I left 1st as it and put in a higher 5th... but am thinking of building another gearbox with the lower first and higher fifth so that I can try them both out. For those who have put in the lower first... is it worth it? And if so under what conditions would you/would you now consider it?
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Old 04-05-2013, 09:40 AM   #26
Ras Thurlo OP
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we're getting there:


[IMG] photo IMG_0028_zps60506f51.jpg[/IMG]

[IMG] photo IMG_0029_zps022fdefc.jpg[/IMG]
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Old 04-05-2013, 10:58 AM   #27
Prutser
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What's the seat height Ras ?
It looks tall.
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Old 04-05-2013, 02:00 PM   #28
Clay Spinner
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. I remember when we were at the same stage.... Now... I have nothing to bolt things too! I must say that tag rear end looks very swish!
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Old 04-05-2013, 02:39 PM   #29
Airhead Wrangler
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I hope you have a new centerstand on the way because what you have there isn't quite going to cut it. Looking great.
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Old 04-06-2013, 03:34 AM   #30
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Quote:
Originally Posted by Airhead Wrangler View Post
I hope you have a new centerstand on the way because what you have there isn't quite going to cut it.

Things will be OK as long as he carries those two pieces of timber with him.
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