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#Post#: 1579--------------------------------------------------
690 Enduro R - Latest Mods - Tires, Mirrors and Front Sprocket
By: Bartlioni Date: August 19, 2014, 8:11 am
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I've been in the process of making mods to my KTM to support the
fact that most of my riding is on the street. Here's the
latest.
1. Tires - For the street, gravel, or well defined trails I ride
on, I decided on going with a true 50/50 tire set. So I went
with the Heidenau K-60 Scout tires. (Note there is also a 70/30
version for the rear, but I went with the 50/50 version) These
tires work great, they're very versatile, and they stick to the
road like glue. They are also reputed to last for 9 - 12
thousand miles. Very happy with these tires. Perfect for my
application.
2. Mirrors - I went with the Touratech folding mirrors. When
folded out, I now have radically better visibility of what's
behind me and they are less prone to vibration than the cheesy
stock mirrors. I had to glue one of the stock mirror lenses to
the mirror's frame (like it was supposed to be already) in order
to keep it from rattling. Not a good mirror. I highly
recommend the Touratech folding mirrors.
3. Front Sprocket - Last but not least (for this post) I
swapped out the 15 tooth front sprocket with a 16 tooth version.
Again, since most of my riding is on street, gravel, or
well-defined trails, I was willing to sacrifice a little bit of
acceleration and low-end grunt to get smoother street
performance and top-end. Note that the factory gear ratio is
15/45. I've now set mine at 16/45. For comparison, the Duke,
which uses the same motor, runs 16/42. Don't go over 16 teeth.
There isn't room for it with the factory sprocket cover.
Changing front sprockets is easy, and I can always go back to
the 15 tooth version in less than 30 minutes. What difference
did it make? For a given level of engine output (in 6th gear)
I'm now moving around ten miles an hour faster. Speed
transitions as I roll on/off the throttle at highway speeds are
much less abrupt, but contrary to popular opinion, I'm not
seeing a significant increase in gas mileage. Perhaps I'll see
a little difference after I run a couple of more tanks of gas
through it, but the initial tank indicated a wash. I expected
this as the reports I've seen on the Duke's mileage is virtually
identical to the Enduro R.
Have fun. I hope this post is helpful to those of you who spend
more time in conditions short of full-up motorcross. My
configuration didn't stop me from giving a respectable chase
after an albino Doe (really) across a huge grass field last
Saturday. Next time I'll be giving a report on the Progressive
Handlebar Damping System (Due for delivery today).
#Post#: 1604--------------------------------------------------
Re: 690 Enduro R - Latest Mods - Tires, Mirrors and Front Sprock
et
By: Rusty Shovel Date: August 20, 2014, 11:20 pm
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Cool. I may do the opposite and drop a tooth up front before
any long range off-road trip. I just stalled out on technical
hill climb and it could've easily ruined my day. I'd like a
little more crawling room down low.
#Post#: 1612--------------------------------------------------
Re: 690 Enduro R - Latest Mods - Tires, Mirrors and Front Sprock
et
By: truck11 Date: August 21, 2014, 3:16 pm
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I'm running 14/45 and getting 47pmg on the street and only 33ish
on the trails.
#Post#: 1614--------------------------------------------------
Re: 690 Enduro R - Latest Mods - Tires, Mirrors and Front Sprock
et
By: Bartlioni Date: August 21, 2014, 3:44 pm
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So based on what I'm seeing by having gone up to a 16 on the
front, its basically like I removed the bottom gear and added
another gear to the top. My minimum comfortable speed in sixth
gear with the 15 tooth was ~42mph before I needed to downshift
to keep the motor from bogging down. With the 16 tooth its now
right around 52mph. So I'm guessing the 14 tooth you guys are
using would be like adding a gear to the bottom and removing one
from the top. Its interesting that the gear ratios don't have
as dramatic an effect on gas mileage as they do on engine rpms.
I guess it takes 'x' amount of go juice to cover 'y' amount of
ground somewhat independently of rpms. Just speculating.
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