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Tiger Time => Girly Talk (1999 - 2006 Tigers) => Topic started by: Roadinator on May 24, 2013, 10:00:01 AM

Title: Cruising speed RPM
Post by: Roadinator on May 24, 2013, 10:00:01 AM
My '05 Tiger running at 65mph is running at 4250 rpm on the tach.  Too lazy to count sprockets (and convert for the fine folks across the pond), but is this about normal for other folks?
Title: Re: Cruising speed RPM
Post by: Dutch on May 24, 2013, 10:39:00 AM
My '05 runs 24 km/h per 1000 rpm. That is 15 mph so 60 = 4000 rpm. 65 would be 4333 rpm. Close enough, specially if you speedo is a bit optimistic (I calculated with the GPS speed, that's pretty accurate).
Title: Re: Cruising speed RPM
Post by: Chris Canning on May 24, 2013, 02:02:41 PM
With what sprockets,I'd imagine it would be a novelty running stock gearing do people still use it!!
Title: Re: Cruising speed RPM
Post by: Dutch on May 24, 2013, 02:19:15 PM
The ones on the bike when I bought it. Never been able to count; more then I have fingers  :hat10
Title: Re: Cruising speed RPM
Post by: Roadinator on May 24, 2013, 06:28:35 PM
Quote from: Dutch on May 24, 2013, 10:39:00 AM
My '05 runs 24 km/h per 1000 rpm. That is 15 mph so 60 = 4000 rpm. 65 would be 4333 rpm. Close enough, specially if you speedo is a bit optimistic (I calculated with the GPS speed, that's pretty accurate).

Thanks Dutch.  I thought it was a little high on the RPM for cruising speed, but good to hear that's about right.
Title: Re: Cruising speed RPM
Post by: cosmo on May 25, 2013, 05:15:28 AM
I've very tall gearing, 19 and 43, and tach 4,000 at 70 mph.

Very relaxing and economical.

Cosmo
Title: Re: Cruising speed RPM
Post by: Stitch on May 25, 2013, 06:01:22 AM
If you are due for sprocket/chain replacement, a 19 tooth front works well and you can use the stock length chain. It is a tried method without much debate to where to gain a bit at highway speeds (meaning a drop in rpms at 65 mph +/-) without sacrificing low end (to where it is noticeable).

I have a 19 tooth front and a stock 46 tooth rear now when I recently changed my chain/sprockets. It works better than the 18t stock front for my freeway commuting (avg 65mph) but I may go taller in the near future like cosmo's set up.

If you want to see how the numbers look at various combinations you can check out www.gearingcommander.com

Title: Re: Cruising speed RPM
Post by: Chris Canning on May 25, 2013, 11:09:44 AM
Ran both my 885i's with a 19 front and apart from the day I rode my 955 home brandnew from the shop have never ridden it with an 18,with the can/map/airbox mod there's no difference in performance apart from the drop in revs doing it.
Title: Re: Cruising speed RPM
Post by: Bixxer Bob on May 25, 2013, 11:14:30 AM
Remind me again what you have on the back Chris?
Title: Re: Cruising speed RPM
Post by: cosmo on May 25, 2013, 02:03:59 PM
Just to further details, I've ridden over 50,000 miles, many two-up, and I have noticed no adverse effects, even in heavy city (Chicago) traffic.

Unless stopping less for fuel is an adverse effect...

Cosmo
Title: Re: Cruising speed RPM
Post by: Stitch on May 25, 2013, 05:01:59 PM
Are you running a stock length chain at 114 links  Cosmo?
Title: Re: Cruising speed RPM
Post by: Chris Canning on May 25, 2013, 07:20:50 PM
Quote from: Bixxer Bob on May 25, 2013, 11:14:30 AM
Remind me again what you have on the back Chris?

Rear is stock which is 46,with the mods it'll pull that gearing fine,but it's rare I'm in top under 70mph.
Title: Re: Cruising speed RPM
Post by: cosmo on May 26, 2013, 06:23:03 PM
Quote from: Stitch on May 25, 2013, 05:01:59 PM
Are you running a stock length chain at 114 links  Cosmo?

No. 112.

Cosmo
Title: Re: Cruising speed RPM
Post by: Advwannabe on May 26, 2013, 11:57:16 PM
Yep, 19 front, stock rear for me as well.

Brought the gearing in line with my Daytona: 128k @5000.

Doesn't seem to compromise the bike in the rough stuff and makes it less busy at my normal cruising speed @115-120k. Still seems to have plenty of urge for going around stuff in top gear at that pace so seems like the ideal solution. 
Title: Re: Cruising speed RPM
Post by: Roadinator on May 27, 2013, 12:27:19 AM
I think 19 upfront and stock in the back sounds like a good set-up.  Any recommendations for a good front sprocket (at and good price of course)?
Title: Re: Cruising speed RPM
Post by: Stitch on May 27, 2013, 06:27:54 AM
Quote from: cosmo on May 26, 2013, 06:23:03 PM
Quote from: Stitch on May 25, 2013, 05:01:59 PM
Are you running a stock length chain at 114 links  Cosmo?

No. 112.

Cosmo

Thanks Cosmo. Going to make the change since most of my commute is in the higher speeds. Ordered a JT rear 43t sprocket today and have a chain tool to drop a couple of links out.
Title: Re: Cruising speed RPM
Post by: metalguru on May 29, 2013, 07:11:56 PM
If you get stuck for a 19 front, Yamaha xjr/fj12/1300 will fit.
May need a big chain breaker, found an angle grinder most useful.
Title: Re: Cruising speed RPM
Post by: Roadinator on June 05, 2013, 05:30:03 AM
So I checked my front and it is a 18T.  I ride a good bit two up with the wife and wonder if a 19T front is worth it.  I'm not on the highway for long stretches and only use the bike on the weekends, but I do have a 1500 mile trip with lots of highway (just me) at the end of this month.  Will a 19T make it harder to do the slow speed two up stuff?  I'm guessing a little less rpm on the highway has to impact MPG's at least a little?  I'm sure the back is stock as well, but it seems like a 19 up front is probably worth it for highway cruising. 

Is there a big difference between these front sprockets:
http://compare.ebay.com/like/321106580901?var=lv&ltyp=AllFixedPriceItemTypes&var=sbar

https://www.pureperformancecycles.com/Brand/Triumph/Triumph-Tiger/Engine---Drive/Renthal-Front-Sprocket--05--11-Tiger-955i-1050/

http://www.bikebandit.com/renthal-street-motorcycle-sprocket?m=121583
Title: Re: Cruising speed RPM
Post by: Mustang on June 05, 2013, 02:37:12 PM
JT sprockets .......................

have put literally many , many thousands of miles on 4 tigers using  nothing but JT  :thumbsup

ps. 955I is 18/46 for std. gearing with a 114 link chain
Title: Re: Cruising speed RPM
Post by: Roadinator on June 11, 2013, 08:30:24 AM
So the front sprocket nut on an '05 Girly is 36mm?  I don't have a 36mm socket, but thought the nut had some wiggle to it.  Is it held in by force, meaning torqued to a certain spec or is it tightened to a certain point and locked in place by the flanged washer?  Just wondering if I need to order a 36 mm socket for my torque wrench or hand tighten with adjustable pliers.  Should I replace the washer?
Title: Re: Cruising speed RPM
Post by: Marc on June 11, 2013, 10:08:47 AM
Quote from: Roadinator on June 11, 2013, 08:30:24 AM
So the front sprocket nut on an '05 Girly is 36mm?  I don't have a 36mm socket, but thought the nut had some wiggle to it.  Is it held in by force, meaning torqued to a certain spec or is it tightened to a certain point and locked in place by the flanged washer?  Just wondering if I need to order a 36 mm socket for my torque wrench or hand tighten with adjustable pliers.  Should I replace the washer?

I just changed mine to 19T  :XXsunsmile  If properly mounted it is torqued to 130Nm  :icon_eek:
So jou really have to order (borrow) a 36 mm socket (a black one) and a great deal of force!!
If not to loosen, you certainly will need it to lock the nut.
IMHO if not dammaged you can reuse the washer.

See this tread:    http://www.tigertriple.com/forum/index.php/topic,5387.msg34275.html#msg34275 
Title: Re: Cruising speed RPM
Post by: speedfin on June 11, 2013, 01:59:25 PM
Going the other way,  because I have a sidecar attached to my 885i I've dropped the front sprocket to 17 and increased the rear to 53 (the largest I could fit without changing the chain).

At 4000 rpm I'm traveling at about 50 mph but I'm still managing to get the best part of 45 mpg (UK)
Title: Re: Cruising speed RPM
Post by: Roadinator on June 11, 2013, 03:38:40 PM
Thanks Marc.  Just ordered a 19T JT sprocket and 36mm socket  :eusa_clap
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