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Old 09-14-2010, 05:44 AM   #1621
bigdon
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If you buy your Ohlins from Rick at
http://motocd.com/index.php?option=com_contact&Itemid=3
he can set your ride height ,spring it for your weight, and do it all at a discounted price.

Just a very happy customer!
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Old 09-14-2010, 10:40 AM   #1622
AZ-Twin
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Since we are on the subject of suspension I will pose this question to you all.

What is the best thing to do to the forks besides swapping them? I am about 200-210 LBS with gear. I put an ohlins shock on the rear and am happy with that but the frontend feels like a wet sponge. I don't really want to swap out the forks, will new springs and a different weight oil do the trick? I just want to firm it up a bit.

What is your experience?
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Old 09-14-2010, 11:16 AM   #1623
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Do these bikes suffer from heat exhaustion?

I did some 1st & 2nd gear single track running for the first time this weekend.
The fan ran the WHOLE time, no other bike I have owned has done this.
Others will kick on now and then in the tight stuff, but not constant running.

Other than the fan, the bike ran OK for the first hour, but after that it developed a real bad stumble when trying to apply power out of tight corners.

I had to throttle and clutch every tight corner after the first hour to keep from falling.
Even after short rest stops and breif higher speed fire road runs it did not get better until I ran it on the road for several miles.

Anyone else experience this?
After the first hour this bike is NO FUN on the trails.

Of course there is no way to "duplicate" this for the dealer so I will get no where with BMW.
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Old 09-14-2010, 03:55 PM   #1624
gsd4me
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Quote:
Originally Posted by Ogre_fl
Do these bikes suffer from heat exhaustion?

I did some 1st & 2nd gear single track running for the first time this weekend.
The fan ran the WHOLE time, no other bike I have owned has done this.
Others will kick on now and then in the tight stuff, but not constant running.

Other than the fan, the bike ran OK for the first hour, but after that it developed a real bad stumble when trying to apply power out of tight corners.

I had to throttle and clutch every tight corner after the first hour to keep from falling.
Even after short rest stops and breif higher speed fire road runs it did not get better until I ran it on the road for several miles.

Anyone else experience this?
After the first hour this bike is NO FUN on the trails.

Of course there is no way to "duplicate" this for the dealer so I will get no where with BMW.

Maybe the gearing is too high. BMW offered `enduro` gearing as an option when these bikes were new - 14/47, down from 15/47.

I have similar overall gearing, but a different combination on my bike, 15/50, this makes life a bit easier for the front sprocket.
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Old 09-14-2010, 04:01 PM   #1625
Hotmamaandme
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Fan

My fan runs most of the time while off road single track. I've never had the hot water light come on. I figure the fan is doing its job. There is an after market BIG radiator for it.


QUOTE=Ogre_fl]Do these bikes suffer from heat exhaustion?

I did some 1st & 2nd gear single track running for the first time this weekend.
The fan ran the WHOLE time, no other bike I have owned has done this.
Others will kick on now and then in the tight stuff, but not constant running.

Other than the fan, the bike ran OK for the first hour, but after that it developed a real bad stumble when trying to apply power out of tight corners.

I had to throttle and clutch every tight corner after the first hour to keep from falling.
Even after short rest stops and breif higher speed fire road runs it did not get better until I ran it on the road for several miles.

Anyone else experience this?
After the first hour this bike is NO FUN on the trails.

Of course there is no way to "duplicate" this for the dealer so I will get no where with BMW. [/QUOTE]
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Old 09-14-2010, 04:09 PM   #1626
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These bikes have a smallish electrical output. Is it possible they used a smaller fan on the X's.

That said, I've never overheated it ( Well except the time I put a hole in the rad )
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Old 09-14-2010, 04:24 PM   #1627
Ogre_fl
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No overheat lights came on, nor did it boil over or anything like that.

It just changed from good throttle response/easy to ride to a bad stumble.

While lower gearing would not hurt, it was fine for an hour, so it would seem it is not "needed"
I beleive the stumble would still happen even with lower gears.
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Old 09-14-2010, 05:39 PM   #1628
Cruz
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Something isn't right there Ogre, mine shows none of those points you mention. Going to a 14 front certainly makes takeup a bit easier/smoother in single track but that isn't your problem from the sound of it. Possibly running too lean????

After fitting a Boosterplug to my bike the cooling fan does not come on as often as before and I presume this is because the settings are made a little bit richer under throttle openings etc. Anyone???
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Old 09-14-2010, 05:55 PM   #1629
Cruz
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Quote:
Originally Posted by AZ-Twin
Since we are on the subject of suspension I will pose this question to you all.

What is the best thing to do to the forks besides swapping them? I am about 200-210 LBS with gear. I put an ohlins shock on the rear and am happy with that but the frontend feels like a wet sponge. I don't really want to swap out the forks, will new springs and a different weight oil do the trick? I just want to firm it up a bit.

What is your experience?
I have been exploring this for the past year to the extent of trying to fit a Honda CRF front end yesterday. It was just a few mm out each side in the fork clamp width to stop being bolted on.

I fitted Hyperpro springs (same weight as you) and 10 weight oil and it did make a big improvement over standard but still not a great set of forks for hard off road work. I found when fitting my springs that the left leg oil level was less than half what it should have been and my forks have never shown any signs of leakage.

This would be the springs you are after.

FRSP 405149 RT FRK SPR 39.5x508mm .49kg

http://old.racetech.com/evalving/eng...ngname=english

OR: Find some 45mm Marzocchis off of a Husky or GasGas and use the internal cartridges in you forks with a little bit of lathe work at the bottom. Marzocchi do not seem interested in selling the cartridges and would cost an arm and a leg anyway. Only other forks used so far appear to be WPs
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Old 09-15-2010, 02:54 PM   #1630
AZ-Twin
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Quote:
Originally Posted by Cruz
I have been exploring this for the past year to the extent of trying to fit a Honda CRF front end yesterday. It was just a few mm out each side in the fork clamp width to stop being bolted on.

I fitted Hyperpro springs (same weight as you) and 10 weight oil and it did make a big improvement over standard but still not a great set of forks for hard off road work. I found when fitting my springs that the left leg oil level was less than half what it should have been and my forks have never shown any signs of leakage.

This would be the springs you are after.

FRSP 405149 RT FRK SPR 39.5x508mm .49kg

http://old.racetech.com/evalving/eng...ngname=english

OR: Find some 45mm Marzocchis off of a Husky or GasGas and use the internal cartridges in you forks with a little bit of lathe work at the bottom. Marzocchi do not seem interested in selling the cartridges and would cost an arm and a leg anyway. Only other forks used so far appear to be WPs
Thanks for the info, PM sent.
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2011 North up the CDR
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Old 09-15-2010, 08:01 PM   #1631
tbarstow
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Quote:
Originally Posted by AZ-Twin
Since we are on the subject of suspension I will pose this question to you all.

What is the best thing to do to the forks besides swapping them? I am about 200-210 LBS with gear. I put an ohlins shock on the rear and am happy with that but the frontend feels like a wet sponge. I don't really want to swap out the forks, will new springs and a different weight oil do the trick? I just want to firm it up a bit.

What is your experience?

Send them to TrailTricks to have them resprung and revalved for your weight and riding style. Incredible difference in how the bike handles.
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Old 09-16-2010, 03:32 AM   #1632
Dukehunt
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Quote:
Originally Posted by Cruz
I have been exploring this for the past year to the extent of trying to fit a Honda CRF front end yesterday. It was just a few mm out each side in the fork clamp width to stop being bolted on.

I fitted Hyperpro springs (same weight as you) and 10 weight oil and it did make a big improvement over standard but still not a great set of forks for hard off road work. I found when fitting my springs that the left leg oil level was less than half what it should have been and my forks have never shown any signs of leakage.

This would be the springs you are after.

FRSP 405149 RT FRK SPR 39.5x508mm .49kg

http://old.racetech.com/evalving/eng...ngname=english

OR: Find some 45mm Marzocchis off of a Husky or GasGas and use the internal cartridges in you forks with a little bit of lathe work at the bottom. Marzocchi do not seem interested in selling the cartridges and would cost an arm and a leg anyway. Only other forks used so far appear to be WPs
All the comments on fixing the forks on the XC's seems to be a compromise so I have bitten the bullet and going for the 48mm WP forks, emig triple clamps etc, yep it aint cheap and if it still handles like shit then I sell her and get a KTM 690.
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Old 09-16-2010, 05:46 AM   #1633
"A"
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Quote:
Originally Posted by Dukehunt
All the comments on fixing the forks on the XC's seems to be a compromise so I have bitten the bullet and going for the 48mm WP forks, emig triple clamps etc, yep it aint cheap and if it still handles like shit then I sell her and get a KTM 690.
I've done that and you will be pleased to know that it does not handle like shit . You will still need to have the correct spring rate of course. My WP's also had some valve work done at a suspension specialist. Interestingly my forks came off a 690 because the owner wanted better forks for it! It would appear that many are not satisfied with their suspensions no matter what the bike is- there is always something better.
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Old 09-16-2010, 08:55 AM   #1634
snooker
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Quote:
Originally Posted by tbarstow
Send them to TrailTricks to have them resprung and revalved for your weight and riding style. Incredible difference in how the bike handles.
I might just do that with my stock XCountry forks. If they put in progressive springs and re-valve it do you think it will make a big difference? I'm not trying to achieve XChallenge perfection, but now that I have the Wilbers 642 shock on, the forks are the weak link, naturally...
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Old 09-16-2010, 08:59 AM   #1635
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Quote:
Originally Posted by Ogre_fl
No overheat lights came on, nor did it boil over or anything like that.

It just changed from good throttle response/easy to ride to a bad stumble.

While lower gearing would not hurt, it was fine for an hour, so it would seem it is not "needed"
I beleive the stumble would still happen even with lower gears.
Can't comment on the stumble when hot, but for better cooling you could try some coolant additives like Redline's Water Wetter or maybe better is Engine Ice coolant. People seem to notice a big difference I've read.
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