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nowazzu
Joined: 29 Jun 2005
Posts: 1845
Location: So Cal
2005 Honda CRF450X
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 Posted: Tue Oct 27, 2009 3:28 pm Post subject: |
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| Malindor wrote: |
Isn't that one of those new "Appalatian Valley" sprockets???
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-nowazzu-
05' CRF450X |
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paul turner
Joined: 22 Sep 2005
Posts: 8532
Location: '08er
2005 Honda CRF450X
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| Posted: Tue Oct 27, 2009 5:06 pm Post subject: |
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What the he!! is that brown thing ? 
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Smash
Joined: 01 Oct 2005
Posts: 3357
Location: Hesperia, CA
2005 Honda CRF450X
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| Posted: Tue Oct 27, 2009 6:11 pm Post subject: |
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| paul turner wrote: |
| What the he!! is that brown thing ? |
A snack for later.
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You know nothing. In fact, you know less than nothing. If you knew that you knew nothing, then that would be something, but you don't. |
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Kiwi
Joined: 25 Sep 2008
Posts: 307
Location: Los Angeles
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| Posted: Fri Oct 30, 2009 9:13 pm Post subject: |
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Steel sprockets are not needed ... and totally overrated. Aluminum is too expensive and too heavy. Balsa wood ... now that's the build material you need for your next set of sprockets. Just be sure to balance the chain pins or severe high-speed master link wobble (and Class IV splinters) will occur ... which is no fun on a Paul-Turner-issue, 100 mile K-M ride.
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2007 CRF450X with modified airbox, Uni filter with no backfire screen, NCVS needle on 4th, 172 main, CRFs fuel screw at 2, stock smog, 450R cam, FMF Powerbomb header, header wrapped, Pro Circuit T-4 muffler, Pro Taper Evo bars, Pro Taper billet bar risers |
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zippy
Joined: 16 May 2007
Posts: 324
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| Posted: Fri Oct 30, 2009 10:24 pm Post subject: |
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| Kiwi wrote: |
| Steel sprockets are not needed ... and totally overrated. Aluminum is too expensive and too heavy. Balsa wood ... now that's the build material you need for your next set of sprockets. Just be sure to balance the chain pins or severe high-speed master link wobble (and Class IV splinters) will occur ... which is no fun on a Paul-Turner-issue, 100 mile K-M ride. |
Now the 43 mile 8 1/2 hour jober is a completely different story Which way to the pavement   |
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paul turner
Joined: 22 Sep 2005
Posts: 8532
Location: '08er
2005 Honda CRF450X
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| Posted: Fri Oct 30, 2009 10:26 pm Post subject: |
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| zippy wrote: |
| Kiwi wrote: |
| Steel sprockets are not needed ... and totally overrated. Aluminum is too expensive and too heavy. Balsa wood ... now that's the build material you need for your next set of sprockets. Just be sure to balance the chain pins or severe high-speed master link wobble (and Class IV splinters) will occur ... which is no fun on a Paul-Turner-issue, 100 mile K-M ride. |
Now the 43 mile 8 1/2 hour jober is a completely different story Which way to the pavement |
Ziiiiinnnnnngggggg !  
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Four-Fifty-X
Joined: 10 Sep 2006
Posts: 767
Location: California
2006 Honda CRF450X
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Kiwi
Joined: 25 Sep 2008
Posts: 307
Location: Los Angeles
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| Posted: Tue Nov 03, 2009 10:51 am Post subject: |
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OK, so here is Kiwi's sprocket questions of the day.
In late December I am going to do a 115 mile ride from Carson City to Sand Mountain in Northern Nevada (the 20-degree F temp should be fun!).
Although my 2007 450X has numerous power mods, the bike has stock gearing and a stock rear tire size. I was told the top speed on a 450X is around 75 mph.
1. Is 75 mph a correct top speed?
2. If I go up one tooth on the front sprocket, how much more top speed would I have?
3. If I go up two teeth on the front sprocket, how much more top speed would I have?
4. If I did go up two teeth on the front sprocket, would the engine be able to "pull" the new gearing OK or would it be dogging?
5. If I did go up two teeth on the front sprocket, would there be any chain-to-case rubbing issues?
6. For every tooth you go up on the front sprocket, approximately how much longer must you make your chain (assuming you wanted to keep the rear tire in the same location ... thus, not moving if forward to gain chain slack)?
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2007 CRF450X with modified airbox, Uni filter with no backfire screen, NCVS needle on 4th, 172 main, CRFs fuel screw at 2, stock smog, 450R cam, FMF Powerbomb header, header wrapped, Pro Circuit T-4 muffler, Pro Taper Evo bars, Pro Taper billet bar risers |
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elmo450x
Joined: 06 May 2007
Posts: 500
Location: Chatsworth CA
2007 Honda CRF 450X
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| Posted: Tue Nov 03, 2009 2:51 pm Post subject: |
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| Kiwi wrote: |
OK, so here is Kiwi's sprocket questions of the day.
In late December I am going to do a 115 mile ride from Carson City to Sand Mountain in Northern Nevada (the 20-degree F temp should be fun!).
Although my 2007 450X has numerous power mods, the bike has stock gearing and a stock rear tire size. I was told the top speed on a 450X is around 75 mph.
1. Is 75 mph a correct top speed?no- I had mine to 89.5mph with stock gearing according to the GPS
2. If I go up one tooth on the front sprocket, how much more top speed would I have?
3. If I go up two teeth on the front sprocket, how much more top speed would I have?
4. If I did go up two teeth on the front sprocket, would the engine be able to "pull" the new gearing OK or would it be dogging?
5. If I did go up two teeth on the front sprocket, would there be any chain-to-case rubbing issues?
6. For every tooth you go up on the front sprocket, approximately how much longer must you make your chain (assuming you wanted to keep the rear tire in the same location ... thus, not moving if forward to gain chain slack)? |
for the rest here you go:
http://www.sprocketspecialists.com/SprocketOptimizer2.aspx
Gear CRF450X
1st 2.230 (29/13)
2nd 1.625 (26/16)
3rd 1.235 (21/17)
4th 1.000 (19/19)
5th 0.826 (19/23)
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Kiwi
Joined: 25 Sep 2008
Posts: 307
Location: Los Angeles
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| Posted: Tue Nov 03, 2009 3:32 pm Post subject: |
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I was just told that adding a 1 tooth larger front sprocket (thus, going from the stock 13T to a 14T) will likely cause case rubbing.
If no case rubbing occurs while sitting static, I was told that as the chain flaps around that the chain will grow/stretch/move enough that it will hit the case.
Has anybody run a 1-tooth larger front sprocket on their 2006-current 450X ... and does it indeed hit the case?
_________________
2007 CRF450X with modified airbox, Uni filter with no backfire screen, NCVS needle on 4th, 172 main, CRFs fuel screw at 2, stock smog, 450R cam, FMF Powerbomb header, header wrapped, Pro Circuit T-4 muffler, Pro Taper Evo bars, Pro Taper billet bar risers |
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paul turner
Joined: 22 Sep 2005
Posts: 8532
Location: '08er
2005 Honda CRF450X
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| Posted: Tue Nov 03, 2009 4:41 pm Post subject: |
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| Kiwi wrote: |
I was just told that adding a 1 tooth larger front sprocket (thus, going from the stock 13T to a 14T) will likely cause case rubbing.
If no case rubbing occurs while sitting static, I was told that as the chain flaps around that the chain will grow/stretch/move enough that it will hit the case.
Has anybody run a 1-tooth larger front sprocket on their 2006-current 450X ... and does it indeed hit the case? |
Many are using a 14 front with no problem. One must take some material off the stock case saver though. And some Baja teams use a 15 front, what they use for a case saver I have no clue.
Now, you cannot simply throw a 14 in front and adjust the chain. If there is adjustment left, you will have shortened the wheelbase considerably. Do not vary from a 114 link chain. Pick a combo such as 13/49, 14/49, 14/48. These will keep a long wheelbase and give great top speed.
paul
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Kiwi
Joined: 25 Sep 2008
Posts: 307
Location: Los Angeles
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| Posted: Tue Nov 03, 2009 8:39 pm Post subject: |
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PT,
You're sage-like advice has elevated you to hero status in Kiwi's eyes.
P.S. How do get into the esteemed "Los F'ers" shizzle-B-dizzle riding club? I took my FNG hazing (and lumps ... via two crashes) at K-M 2009 ... does that count for anything?
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2007 CRF450X with modified airbox, Uni filter with no backfire screen, NCVS needle on 4th, 172 main, CRFs fuel screw at 2, stock smog, 450R cam, FMF Powerbomb header, header wrapped, Pro Circuit T-4 muffler, Pro Taper Evo bars, Pro Taper billet bar risers |
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nminus1
Joined: 01 May 2006
Posts: 4123
Location: Northern LA County
2005 Honda CRF450X
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| Posted: Wed Nov 04, 2009 7:29 am Post subject: |
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Not until you learn the secret handshake and smoke from the F'ers peace pipe....
Also words like shizzle b dizzle are not allowed north of Wilshire Bl.
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Kiwi
Joined: 25 Sep 2008
Posts: 307
Location: Los Angeles
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| Posted: Wed Nov 04, 2009 2:27 pm Post subject: |
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nminus1,
Do you use that Husky to groom your non-Husky sniffing around in the background?
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2007 CRF450X with modified airbox, Uni filter with no backfire screen, NCVS needle on 4th, 172 main, CRFs fuel screw at 2, stock smog, 450R cam, FMF Powerbomb header, header wrapped, Pro Circuit T-4 muffler, Pro Taper Evo bars, Pro Taper billet bar risers |
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kanyonkritter
Joined: 17 Jan 2007
Posts: 10
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| Posted: Fri Nov 06, 2009 9:26 am Post subject: |
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| paul turner wrote: |
| Kiwi wrote: |
I was just told that adding a 1 tooth larger front sprocket (thus, going from the stock 13T to a 14T) will likely cause case rubbing.
Has anybody run a 1-tooth larger front sprocket on their 2006-current 450X ... and does it indeed hit the case? |
Many are using a 14 front with no problem. One must take some material off the stock case saver though.
Now, you cannot simply throw a 14 in front and adjust the chain. If there is adjustment left, you will have shortened the wheelbase considerably. Do not vary from a 114 link chain. Pick a combo such as 13/49, 14/49, 14/48. These will keep a long wheelbase and give great top speed.
paul |
14T C/S no mods needed the stock case saver does fine in stock trim...on my bike anyways |
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?