Adventure 320mm Single Rotor Conversion w/ STOCK caliper

Consider this hijacked.
I just Ordered a Purte1 bracket and Aprilia sxv5.5 4pot radial mount FTE caliper ($75 on eBay).. I think this is going to work.. Fingers crossed.

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I'm seriously considering this...

The company replied back to my email in broken english and said that the spoke configuration for this is " normal exc ktm with 36 spokes" and that "the axle size 26mm"

Which means I should be able to use an Excel A60 1.6" wide rim?

I've been thinking about going single sided for a while now. My 990 has been partially retired from road duties, and especially 2-up, so I can optimise it for dirt use to an extent that I wouldn't want to do if I was regularly carrying my wife on the back seat :)

On the subject of master cylinders for a single caliper setup - I've noticed that several Hondas use the same braking system as the KTM Adventure. Notable, the Deuville (NT650V) has what look like identical calipers and master cylinder (but not caliper hangers). The newer CB500 has again the same caliper, but only a single one, and so it has the Brembo master cylinder for a 2-pot system. (Older CB500s use Nissin brakes).

If you look inside the Brembo master cylinder, there's a "2" or a "4" in the bottom of the fluid reservoir - this tells you whether it's for a 2-pot or 4-pot setup. The master from the Honda CB500 might well be cheaper to get hold of than the same item from KTM. I've got one on my shelf and I'm going to try going to a single sided standard disc setup.

Having said that, I'm also very interested in Jdeks' idea for a cheap-ish bracket to allow me to use a 320mm disc with the standard caliper. So if you do get round to making some, please put me down for one.

Hi Uk_mouse, I have been running single disc setup for the last 16000 km with the stock master. For me it Works fine. The lever is more firm, but I find it easy to dose. Try to remove the disc and caliper and just ride it. Maybe Youll be fine..

I actually did that last year when I ruptured a brake line ... disconnected one caliper and rode like that for a weekend. So I know it works, as you say the lever is quite firm. As I've got this other master cylinder anyway I may as well try it out :)

Think I replied earlier in this thread also.

Exactly what I did at first and sure it will stop the bike no problem especially with knobbies so its a good Place to start.

It will still work and stop the bike.

But I was not satisfied and Went with SE master that was an improvement.

And would probably have been happy with that but stumbled upon what I thought was a great price for a 320mm Moto-master 4-pot setup that I bought turned out the disc was not the correct one for the caliper so deal was not that good at all but still Went with that but is probably overkill for gravel riding but might be nice if some day putting more streetoriented rubber on the 990.

/Johan

hey guys is the calliper carrier on a 990 different to the 950 to allow clearance for the floaters on a floating disk

Yes it is slightly different, although I'm not sure if it's because of the floating disc.

By the way I was wrong about the cb500 master being the same. It's almost identical but the KTM brake lever doesn't quite fit unless you file down the surrounding area a bit. So I've now got the CB master on my 950 with a single stock calliper and disc. It works pretty well I'd say.

How are the fork bottoms attached to the forks themselves?

Can anyone post a photo of the inside disk side of a 990 caliper bracket for me cheers


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They clamp onto the tubes via a compression fit like the factory unit as far as I can tell. I didn't ask that but thats what I assume from the photos?

I've been talking to both companies Nouva Faor and Cobra. Unfortunately through the broken Italian / English translations I have found neither will work with stock fork widths. These complete kits are manufactured to put the forks at 200mm apart to fit a supermoto tire (super wide). The 950 / 990 WP 4860 forks are 190mm wide stock / factory. So you can potentially make these work on the Adventure if you also purchase an adjustable triple clamp that has puts the forks at 200mm wide. Either company manufactures them. The cool thing is their triples have an adjustable offset which could come in handy for those guys who like running smaller wheels on their Adventures for track day.

http://nuovafaor.it/m/sez-parti-moto/1/piastre-regolabili.htm

Next, the front axle is custom as well. 20mm with 20x42x12mm bearings. The hub is specific to the kit. Meaning you can't use a stock hubs, axles or off the shelf rotors either. $$$.

Lastly, to purchase a hub separate you are looking at $700 euros each.

200mm wide triple $1200 (€) Euros
Double Disc Front $2200 (€) Euros
Rotors $380 (€) Euros

As cool as it would be to have this, I can't justify that cost.

Add a 2nd hub to do quick wheel swaps and and I can purchase Super Enduro!

They screw on. The fork tube is threaded at the bottom.

Thanks. Was wondering if they would fit my SE tubes but wasn't sure how they mounted. but the price listed above is kinda steep for me.

Ok have been playing around with my single disk conversion I have replaced the stock master with a SE unit and have been running a a stock single 300 mm disk for some time.
So thought I'd try and up grade the disk to a 320 and see if this made a big difference with so info from Jdek and a good mate with a mill, I made a a alloy adapter bracket to space the original caliper and carrier

I now have been running this setup for a few week I'm happy with the setup

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If everything is mounted and squared up ok then it looks like you're on to a winner. Shame there isn't anything commercially available, though since the pad area is no larger so the benefit isn't likely to be huge.

Yeah fits well but I've not noticed any reel difference in braking but the larger disk will cool quicker due to the larger area. Is this something you guys might be in buyING

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Just to add some possibilities
http://www.igt-parts.de/Radial-Fork...650-48-White-Power-Fork-108-mm-calliper-mount

Is it a possibility? It needs to work with the 21" wheel.

The end of your post got mangled or something....but yes, I would be interested in buying that part.